1
|
Oh JY, Lee Y, Lee TW. Skin-Mountable Functional Electronic Materials for Bio-Integrated Devices. Adv Healthc Mater 2024; 13:e2303797. [PMID: 38368254 DOI: 10.1002/adhm.202303797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 02/01/2024] [Indexed: 02/19/2024]
Abstract
Skin-mountable electronic materials are being intensively evaluated for use in bio-integrated devices that can mutually interact with the human body. Over the past decade, functional electronic materials inspired by the skin are developed with new functionalities to address the limitations of traditional electronic materials for bio-integrated devices. Herein, the recent progress in skin-mountable functional electronic materials for skin-like electronics is introduced with a focus on five perspectives that entail essential functionalities: stretchability, self-healing ability, biocompatibility, breathability, and biodegradability. All functionalities are advanced with each strategy through rational material designs. The skin-mountable functional materials enable the fabrication of bio-integrated electronic devices, which can lead to new paradigms of electronics combining with the human body.
Collapse
Affiliation(s)
- Jin Young Oh
- Department of Chemical Engineering (Integrated Engineering Program), Kyung Hee University, Yongin, 17104, Republic of Korea
| | - Yeongjun Lee
- Department of Brain and Cognitive Science, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Tae-Woo Lee
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea
- Institute of Engineering Research, Research Institute of Advanced Materials, Molecular Foundry, Seoul National University, Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| |
Collapse
|
2
|
Althumayri M, Das R, Banavath R, Beker L, Achim AM, Ceylan Koydemir H. Recent Advances in Transparent Electrodes and Their Multimodal Sensing Applications. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2405099. [PMID: 39120484 DOI: 10.1002/advs.202405099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 07/24/2024] [Indexed: 08/10/2024]
Abstract
This review examines the recent advancements in transparent electrodes and their crucial role in multimodal sensing technologies. Transparent electrodes, notable for their optical transparency and electrical conductivity, are revolutionizing sensors by enabling the simultaneous detection of diverse physical, chemical, and biological signals. Materials like graphene, carbon nanotubes, and conductive polymers, which offer a balance between optical transparency, electrical conductivity, and mechanical flexibility, are at the forefront of this development. These electrodes are integral in various applications, from healthcare to solar cell technologies, enhancing sensor performance in complex environments. The paper addresses challenges in applying these electrodes, such as the need for mechanical flexibility, high optoelectronic performance, and biocompatibility. It explores new materials and innovative techniques to overcome these hurdles, aiming to broaden the capabilities of multimodal sensing devices. The review provides a comparative analysis of different transparent electrode materials, discussing their applications and the ongoing development of novel electrode systems for multimodal sensing. This exploration offers insights into future advancements in transparent electrodes, highlighting their transformative potential in bioelectronics and multimodal sensing technologies.
Collapse
Affiliation(s)
- Majed Althumayri
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA
- Center for Remote Health Technologies and Systems, Texas A&M Engineering Experiment Station, College Station, TX, 77843, USA
| | - Ritu Das
- Department of Mechanical Engineering, Koç University, Sariyer, Istanbul, 34450, Turkey
| | - Ramu Banavath
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA
- Center for Remote Health Technologies and Systems, Texas A&M Engineering Experiment Station, College Station, TX, 77843, USA
| | - Levent Beker
- Department of Mechanical Engineering, Koç University, Sariyer, Istanbul, 34450, Turkey
| | - Alin M Achim
- School of Computer Science, University of Bristol, Bristol, BS8 1QU, UK
| | - Hatice Ceylan Koydemir
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA
- Center for Remote Health Technologies and Systems, Texas A&M Engineering Experiment Station, College Station, TX, 77843, USA
| |
Collapse
|
3
|
Koo JH, Lee YJ, Kim HJ, Matusik W, Kim DH, Jeong H. Electronic Skin: Opportunities and Challenges in Convergence with Machine Learning. Annu Rev Biomed Eng 2024; 26:331-355. [PMID: 38959390 DOI: 10.1146/annurev-bioeng-103122-032652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/05/2024]
Abstract
Recent advancements in soft electronic skin (e-skin) have led to the development of human-like devices that reproduce the skin's functions and physical attributes. These devices are being explored for applications in robotic prostheses as well as for collecting biopotentials for disease diagnosis and treatment, as exemplified by biomedical e-skins. More recently, machine learning (ML) has been utilized to enhance device control accuracy and data processing efficiency. The convergence of e-skin technologies with ML is promoting their translation into clinical practice, especially in healthcare. This review highlights the latest developments in ML-reinforced e-skin devices for robotic prostheses and biomedical instrumentations. We first describe technological breakthroughs in state-of-the-art e-skin devices, emphasizing technologies that achieve skin-like properties. We then introduce ML methods adopted for control optimization and pattern recognition, followed by practical applications that converge the two technologies. Lastly, we briefly discuss the challenges this interdisciplinary research encounters in its clinical and industrial transition.
Collapse
Affiliation(s)
- Ja Hoon Koo
- Department of Semiconductor Systems Engineering and Institute of Semiconductor and System IC, Sejong University, Seoul, Republic of Korea
| | - Young Joong Lee
- Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Hye Jin Kim
- Center for Nanoparticle Research, Institute for Basic Science, Seoul, Republic of Korea
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, Republic of Korea
| | - Wojciech Matusik
- Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Dae-Hyeong Kim
- Center for Nanoparticle Research, Institute for Basic Science, Seoul, Republic of Korea
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Seoul, Republic of Korea
- Department of Materials Science and Engineering, Seoul National University, Seoul, Republic of Korea
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul, Republic of Korea;
| | - Hyoyoung Jeong
- Department of Electrical and Computer Engineering, University of California, Davis, California, USA;
| |
Collapse
|
4
|
Pinheiro T, Morais M, Silvestre S, Carlos E, Coelho J, Almeida HV, Barquinha P, Fortunato E, Martins R. Direct Laser Writing: From Materials Synthesis and Conversion to Electronic Device Processing. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2402014. [PMID: 38551106 DOI: 10.1002/adma.202402014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 03/18/2024] [Indexed: 04/25/2024]
Abstract
Direct Laser Writing (DLW) has been increasingly selected as a microfabrication route for efficient, cost-effective, high-resolution material synthesis and conversion. Concurrently, lasers participate in the patterning and assembly of functional geometries in several fields of application, of which electronics stand out. In this review, recent advances and strategies based on DLW for electronics microfabrication are surveyed and outlined, based on laser material growth strategies. First, the main DLW parameters influencing material synthesis and transformation mechanisms are summarized, aimed at selective, tailored writing of conductive and semiconducting materials. Additive and transformative DLW processing mechanisms are discussed, to open space to explore several categories of materials directly synthesized or transformed for electronics microfabrication. These include metallic conductors, metal oxides, transition metal chalcogenides and carbides, laser-induced graphene, and their mixtures. By accessing a wide range of material types, DLW-based electronic applications are explored, including processing components, energy harvesting and storage, sensing, and bioelectronics. The expanded capability of lasers to participate in multiple fabrication steps at different implementation levels, from material engineering to device processing, indicates their future applicability to next-generation electronics, where more accessible, green microfabrication approaches integrate lasers as comprehensive tools.
Collapse
Affiliation(s)
- Tomás Pinheiro
- i3N|CENIMAT, Department of Materials Science, NOVA School of Science and Technology and CEMOP/UNINOVA, Campus de Caparica, Caparica, 2829-516, Portugal
| | - Maria Morais
- i3N|CENIMAT, Department of Materials Science, NOVA School of Science and Technology and CEMOP/UNINOVA, Campus de Caparica, Caparica, 2829-516, Portugal
| | - Sara Silvestre
- i3N|CENIMAT, Department of Materials Science, NOVA School of Science and Technology and CEMOP/UNINOVA, Campus de Caparica, Caparica, 2829-516, Portugal
| | - Emanuel Carlos
- i3N|CENIMAT, Department of Materials Science, NOVA School of Science and Technology and CEMOP/UNINOVA, Campus de Caparica, Caparica, 2829-516, Portugal
| | - João Coelho
- i3N|CENIMAT, Department of Materials Science, NOVA School of Science and Technology and CEMOP/UNINOVA, Campus de Caparica, Caparica, 2829-516, Portugal
| | - Henrique V Almeida
- i3N|CENIMAT, Department of Materials Science, NOVA School of Science and Technology and CEMOP/UNINOVA, Campus de Caparica, Caparica, 2829-516, Portugal
| | - Pedro Barquinha
- i3N|CENIMAT, Department of Materials Science, NOVA School of Science and Technology and CEMOP/UNINOVA, Campus de Caparica, Caparica, 2829-516, Portugal
| | - Elvira Fortunato
- i3N|CENIMAT, Department of Materials Science, NOVA School of Science and Technology and CEMOP/UNINOVA, Campus de Caparica, Caparica, 2829-516, Portugal
| | - Rodrigo Martins
- i3N|CENIMAT, Department of Materials Science, NOVA School of Science and Technology and CEMOP/UNINOVA, Campus de Caparica, Caparica, 2829-516, Portugal
| |
Collapse
|
5
|
Park B, Jeong C, Ok J, Kim TI. Materials and Structural Designs toward Motion Artifact-Free Bioelectronics. Chem Rev 2024; 124:6148-6197. [PMID: 38690686 DOI: 10.1021/acs.chemrev.3c00374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Bioelectronics encompassing electronic components and circuits for accessing human information play a vital role in real-time and continuous monitoring of biophysiological signals of electrophysiology, mechanical physiology, and electrochemical physiology. However, mechanical noise, particularly motion artifacts, poses a significant challenge in accurately detecting and analyzing target signals. While software-based "postprocessing" methods and signal filtering techniques have been widely employed, challenges such as signal distortion, major requirement of accurate models for classification, power consumption, and data delay inevitably persist. This review presents an overview of noise reduction strategies in bioelectronics, focusing on reducing motion artifacts and improving the signal-to-noise ratio through hardware-based approaches such as "preprocessing". One of the main stress-avoiding strategies is reducing elastic mechanical energies applied to bioelectronics to prevent stress-induced motion artifacts. Various approaches including strain-compliance, strain-resistance, and stress-damping techniques using unique materials and structures have been explored. Future research should optimize materials and structure designs, establish stable processes and measurement methods, and develop techniques for selectively separating and processing overlapping noises. Ultimately, these advancements will contribute to the development of more reliable and effective bioelectronics for healthcare monitoring and diagnostics.
Collapse
Affiliation(s)
- Byeonghak Park
- School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
| | - Chanho Jeong
- School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
| | - Jehyung Ok
- School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
| | - Tae-Il Kim
- School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
| |
Collapse
|
6
|
Zhao H, Liu M, Guo Q. Silicon-based transient electronics: principles, devices and applications. NANOTECHNOLOGY 2024; 35:292002. [PMID: 38599177 DOI: 10.1088/1361-6528/ad3ce1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 04/10/2024] [Indexed: 04/12/2024]
Abstract
Recent advances in materials science, device designs and advanced fabrication technologies have enabled the rapid development of transient electronics, which represents a class of devices or systems that their functionalities and constitutions can be partially/completely degraded via chemical reaction or physical disintegration over a stable operation. Therefore, numerous potentials, including zero/reduced waste electronics, bioresorbable electronic implants, hardware security, and others, are expected. In particular, transient electronics with biocompatible and bioresorbable properties could completely eliminate the secondary retrieval surgical procedure after their in-body operation, thus offering significant potentials for biomedical applications. In terms of material strategies for the manufacturing of transient electronics, silicon nanomembranes (SiNMs) are of great interest because of their good physical/chemical properties, modest mechanical flexibility (depending on their dimensions), robust and outstanding device performances, and state-of-the-art manufacturing technologies. As a result, continuous efforts have been made to develop silicon-based transient electronics, mainly focusing on designing manufacturing strategies, fabricating various devices with different functionalities, investigating degradation or failure mechanisms, and exploring their applications. In this review, we will summarize the recent progresses of silicon-based transient electronics, with an emphasis on the manufacturing of SiNMs, devices, as well as their applications. After a brief introduction, strategies and basics for utilizing SiNMs for transient electronics will be discussed. Then, various silicon-based transient electronic devices with different functionalities are described. After that, several examples regarding on the applications, with an emphasis on the biomedical engineering, of silicon-based transient electronics are presented. Finally, summary and perspectives on transient electronics are exhibited.
Collapse
Affiliation(s)
- Haonan Zhao
- School of Integrated Circuits, Shandong University, Jinan 250100, People's Republic of China
| | - Min Liu
- School of Integrated Circuits, Shandong University, Jinan 250100, People's Republic of China
| | - Qinglei Guo
- School of Integrated Circuits, Shandong University, Jinan 250100, People's Republic of China
| |
Collapse
|
7
|
Zhou Z, Luo N, Cui T, Luo L, Pu M, Wang Y, He F, Jia C, Shao X, Zhang HL, Liu Z. Pre-Endcapping of Hyperbranched Polymers toward Intrinsically Stretchable Semiconductors with Good Ductility and Carrier Mobility. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2313312. [PMID: 38318963 DOI: 10.1002/adma.202313312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 01/30/2024] [Indexed: 02/07/2024]
Abstract
The advancement of semiconducting polymers stands as a pivotal milestone in the quest to realize wearable electronics. Nonetheless, endowing semiconductor polymers with stretchability without compromising their carrier mobility remains a formidable challenge. This study proposes a "pre-endcapping" strategy for synthesizing hyperbranched semiconducting polymers (HBSPs), aiming to achieve the balance between carrier mobility and stretchability for organic electronics. The findings unveil that the aggregates formed by the endcapped hyperbranched network structure not only ensure efficient charge transport but also demonstrate superior tensile resistance. In comparison to linear conjugated polymers, HBSPs exhibit substantially larger crack onset strains and notably diminished tensile moduli. It is evident that the HBSPs surpass their linear counterparts in terms of both their semiconducting and mechanical properties. Among HBSPs, HBSP-72h-2.5 stands out as the preeminent candidate within the field of inherently stretchable semiconducting polymers, maintaining 93% of its initial mobility even when subjected to 100% strain (1.41 ± 0.206 cm2 V-1 s-1). Furthermore, thin film devices of HBSP-72h-2.5 remain stable after undergoing repeated stretching and releasing cycles. Notably, the mobilities are independent of the stretching directions, showing isotropic charge transport behavior. The preliminary study makes this "pre-endcapping" strategy a potential candidate for the future design of organic materials for flexible electronic devices.
Collapse
Affiliation(s)
- Zhaoqiong Zhou
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Key Laboratory of Special Function Materials and Structure Design, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Nan Luo
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Key Laboratory of Special Function Materials and Structure Design, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Tianqiang Cui
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Key Laboratory of Special Function Materials and Structure Design, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Liang Luo
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Key Laboratory of Special Function Materials and Structure Design, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Mingrui Pu
- Guangdong Provincial Key Laboratory of Catalysis, Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Ying Wang
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Key Laboratory of Special Function Materials and Structure Design, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Feng He
- Guangdong Provincial Key Laboratory of Catalysis, Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Chunyang Jia
- State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 611731, China
| | - Xiangfeng Shao
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Key Laboratory of Special Function Materials and Structure Design, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Hao-Li Zhang
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Key Laboratory of Special Function Materials and Structure Design, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Zitong Liu
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Key Laboratory of Special Function Materials and Structure Design, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| |
Collapse
|
8
|
Dutta T, Chaturvedi P, Llamas-Garro I, Velázquez-González JS, Dubey R, Mishra SK. Smart materials for flexible electronics and devices: hydrogel. RSC Adv 2024; 14:12984-13004. [PMID: 38655485 PMCID: PMC11033831 DOI: 10.1039/d4ra01168f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 04/05/2024] [Indexed: 04/26/2024] Open
Abstract
In recent years, flexible conductive materials have attracted considerable attention for their potential use in flexible energy storage devices, touch panels, sensors, memristors, and other applications. The outstanding flexibility, electricity, and tunable mechanical properties of hydrogels make them ideal conductive materials for flexible electronic devices. Various synthetic strategies have been developed to produce conductive and environmentally friendly hydrogels for high-performance flexible electronics. In this review, we discuss the state-of-the-art applications of hydrogels in flexible electronics, such as energy storage, touch panels, memristor devices, and sensors like temperature, gas, humidity, chemical, strain, and textile sensors, and the latest synthesis methods of hydrogels. Describe the process of fabricating sensors as well. Finally, we discussed the challenges and future research avenues for flexible and portable electronic devices based on hydrogels.
Collapse
Affiliation(s)
- Taposhree Dutta
- Department of Chemistry, Indian Institute of Engineering Science and Technology Shibpur Howrah W.B. - 711103 India
| | - Pavan Chaturvedi
- Department of Physics, Vanderbilt University 3414 Murphy Rd, Apt#4 Nashville TN-37203 USA +575-650-4595
| | - Ignacio Llamas-Garro
- Navigation and Positioning Research Unit, Centre Tecnològic de Telecomunicacions de Catalunya Castelldefels Spain
| | | | - Rakesh Dubey
- Instiute of Physics, University of Szczecin Poland
| | - Satyendra Kumar Mishra
- Space and Reslinent Research Unit, Centre Tecnològic de Telecomunicacions de Catalunya Castelldefels Spain
| |
Collapse
|
9
|
Zhang D, Chen Y, Hao M, Xia Y. Putting Hybrid Nanomaterials to Work for Biomedical Applications. Angew Chem Int Ed Engl 2024; 63:e202319567. [PMID: 38429227 DOI: 10.1002/anie.202319567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 02/29/2024] [Accepted: 03/01/2024] [Indexed: 03/03/2024]
Abstract
Hybrid nanomaterials have found use in many biomedical applications. This article provides a comprehensive review of the principles, techniques, and recent advancements in the design and fabrication of hybrid nanomaterials for biomedicine. We begin with an introduction to the general concept of material hybridization, followed by a discussion of how this approach leads to materials with additional functionality and enhanced performance. We then highlight hybrid nanomaterials in the forms of nanostructures, nanocomposites, metal-organic frameworks, and biohybrids, including their fabrication methods. We also showcase the use of hybrid nanomaterials to advance biomedical engineering in the context of nanomedicine, regenerative medicine, diagnostics, theranostics, and biomanufacturing. Finally, we offer perspectives on challenges and opportunities.
Collapse
Affiliation(s)
- Dong Zhang
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - Yidan Chen
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Min Hao
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA
| |
Collapse
|
10
|
Bhatia A, Hanna J, Stuart T, Kasper KA, Clausen DM, Gutruf P. Wireless Battery-free and Fully Implantable Organ Interfaces. Chem Rev 2024; 124:2205-2280. [PMID: 38382030 DOI: 10.1021/acs.chemrev.3c00425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Advances in soft materials, miniaturized electronics, sensors, stimulators, radios, and battery-free power supplies are resulting in a new generation of fully implantable organ interfaces that leverage volumetric reduction and soft mechanics by eliminating electrochemical power storage. This device class offers the ability to provide high-fidelity readouts of physiological processes, enables stimulation, and allows control over organs to realize new therapeutic and diagnostic paradigms. Driven by seamless integration with connected infrastructure, these devices enable personalized digital medicine. Key to advances are carefully designed material, electrophysical, electrochemical, and electromagnetic systems that form implantables with mechanical properties closely matched to the target organ to deliver functionality that supports high-fidelity sensors and stimulators. The elimination of electrochemical power supplies enables control over device operation, anywhere from acute, to lifetimes matching the target subject with physical dimensions that supports imperceptible operation. This review provides a comprehensive overview of the basic building blocks of battery-free organ interfaces and related topics such as implantation, delivery, sterilization, and user acceptance. State of the art examples categorized by organ system and an outlook of interconnection and advanced strategies for computation leveraging the consistent power influx to elevate functionality of this device class over current battery-powered strategies is highlighted.
Collapse
Affiliation(s)
- Aman Bhatia
- Department of Biomedical Engineering, The University of Arizona, Tucson, Arizona 85721, United States
| | - Jessica Hanna
- Department of Biomedical Engineering, The University of Arizona, Tucson, Arizona 85721, United States
| | - Tucker Stuart
- Department of Biomedical Engineering, The University of Arizona, Tucson, Arizona 85721, United States
| | - Kevin Albert Kasper
- Department of Biomedical Engineering, The University of Arizona, Tucson, Arizona 85721, United States
| | - David Marshall Clausen
- Department of Biomedical Engineering, The University of Arizona, Tucson, Arizona 85721, United States
| | - Philipp Gutruf
- Department of Biomedical Engineering, The University of Arizona, Tucson, Arizona 85721, United States
- Department of Electrical and Computer Engineering, The University of Arizona, Tucson, Arizona 85721, United States
- Bio5 Institute, The University of Arizona, Tucson, Arizona 85721, United States
- Neuroscience Graduate Interdisciplinary Program (GIDP), The University of Arizona, Tucson, Arizona 85721, United States
| |
Collapse
|
11
|
Chang S, Koo JH, Yoo J, Kim MS, Choi MK, Kim DH, Song YM. Flexible and Stretchable Light-Emitting Diodes and Photodetectors for Human-Centric Optoelectronics. Chem Rev 2024; 124:768-859. [PMID: 38241488 DOI: 10.1021/acs.chemrev.3c00548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2024]
Abstract
Optoelectronic devices with unconventional form factors, such as flexible and stretchable light-emitting or photoresponsive devices, are core elements for the next-generation human-centric optoelectronics. For instance, these deformable devices can be utilized as closely fitted wearable sensors to acquire precise biosignals that are subsequently uploaded to the cloud for immediate examination and diagnosis, and also can be used for vision systems for human-interactive robotics. Their inception was propelled by breakthroughs in novel optoelectronic material technologies and device blueprinting methodologies, endowing flexibility and mechanical resilience to conventional rigid optoelectronic devices. This paper reviews the advancements in such soft optoelectronic device technologies, honing in on various materials, manufacturing techniques, and device design strategies. We will first highlight the general approaches for flexible and stretchable device fabrication, including the appropriate material selection for the substrate, electrodes, and insulation layers. We will then focus on the materials for flexible and stretchable light-emitting diodes, their device integration strategies, and representative application examples. Next, we will move on to the materials for flexible and stretchable photodetectors, highlighting the state-of-the-art materials and device fabrication methods, followed by their representative application examples. At the end, a brief summary will be given, and the potential challenges for further development of functional devices will be discussed as a conclusion.
Collapse
Affiliation(s)
- Sehui Chang
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Ja Hoon Koo
- Department of Semiconductor Systems Engineering, Sejong University, Seoul 05006, Republic of Korea
- Institute of Semiconductor and System IC, Sejong University, Seoul 05006, Republic of Korea
| | - Jisu Yoo
- Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Min Seok Kim
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Moon Kee Choi
- Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Graduate School of Semiconductor Materials and Devices Engineering, Center for Future Semiconductor Technology (FUST), UNIST, Ulsan 44919, Republic of Korea
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
| | - Dae-Hyeong Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University (SNU), Seoul 08826, Republic of Korea
- Department of Materials Science and Engineering, SNU, Seoul 08826, Republic of Korea
- Interdisciplinary Program for Bioengineering, SNU, Seoul 08826, Republic of Korea
| | - Young Min Song
- School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
- Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Artificial Intelligence (AI) Graduate School, GIST, Gwangju 61005, Republic of Korea
| |
Collapse
|
12
|
Park H, Kim DC. Structural and Material-Based Approaches for the Fabrication of Stretchable Light-Emitting Diodes. MICROMACHINES 2023; 15:66. [PMID: 38258185 PMCID: PMC10821428 DOI: 10.3390/mi15010066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 12/22/2023] [Accepted: 12/27/2023] [Indexed: 01/24/2024]
Abstract
Stretchable displays, capable of freely transforming their shapes, have received significant attention as alternatives to conventional rigid displays, and they are anticipated to provide new opportunities in various human-friendly electronics applications. As a core component of stretchable displays, high-performance stretchable light-emitting diodes (LEDs) have recently emerged. The approaches to fabricate stretchable LEDs are broadly categorized into two groups, namely "structural" and "material-based" approaches, based on the mechanisms to tolerate strain. While structural approaches rely on specially designed geometries to dissipate applied strain, material-based approaches mainly focus on replacing conventional rigid components of LEDs to soft and stretchable materials. Here, we review the latest studies on the fabrication of stretchable LEDs, which is accomplished through these distinctive strategies. First, we introduce representative device designs for efficient strain distribution, encompassing island-bridge structures, wavy buckling, and kirigami-/origami-based structures. For the material-based approaches, we discuss the latest studies for intrinsically stretchable (is-) electronic/optoelectronic materials, including the formation of conductive nanocomposite and polymeric blending with various additives. The review also provides examples of is-LEDs, focusing on their luminous performance and stretchability. We conclude this review with a brief outlook on future technologies.
Collapse
Affiliation(s)
- Hamin Park
- Department of Electronic Engineering, Kwangwoon University, 20, Gwangun-ro, Nowon-gu, Seoul 01897, Republic of Korea
| | - Dong Chan Kim
- Department of Chemical and Biological Engineering, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si 13120, Republic of Korea
| |
Collapse
|
13
|
Dong K, Liu WC, Su Y, Lyu Y, Huang H, Zheng N, Rogers JA, Nan K. Scalable Electrophysiology of Millimeter-Scale Animals with Electrode Devices. BME FRONTIERS 2023; 4:0034. [PMID: 38435343 PMCID: PMC10907027 DOI: 10.34133/bmef.0034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 11/08/2023] [Indexed: 03/05/2024] Open
Abstract
Millimeter-scale animals such as Caenorhabditis elegans, Drosophila larvae, zebrafish, and bees serve as powerful model organisms in the fields of neurobiology and neuroethology. Various methods exist for recording large-scale electrophysiological signals from these animals. Existing approaches often lack, however, real-time, uninterrupted investigations due to their rigid constructs, geometric constraints, and mechanical mismatch in integration with soft organisms. The recent research establishes the foundations for 3-dimensional flexible bioelectronic interfaces that incorporate microfabricated components and nanoelectronic function with adjustable mechanical properties and multidimensional variability, offering unique capabilities for chronic, stable interrogation and stimulation of millimeter-scale animals and miniature tissue constructs. This review summarizes the most advanced technologies for electrophysiological studies, based on methods of 3-dimensional flexible bioelectronics. A concluding section addresses the challenges of these devices in achieving freestanding, robust, and multifunctional biointerfaces.
Collapse
Affiliation(s)
- Kairu Dong
- College of Pharmaceutical Sciences,
Zhejiang University, Hangzhou 310058, China
- National Key Laboratory of Advanced Drug Delivery and Release Systems,
Zhejiang University, Hangzhou 310058, China
- College of Biomedical Engineering & Instrument Science,
Zhejiang University, Hangzhou, 310027, China
| | - Wen-Che Liu
- College of Pharmaceutical Sciences,
Zhejiang University, Hangzhou 310058, China
- National Key Laboratory of Advanced Drug Delivery and Release Systems,
Zhejiang University, Hangzhou 310058, China
| | - Yuyan Su
- College of Pharmaceutical Sciences,
Zhejiang University, Hangzhou 310058, China
- Department of Gastroenterology, Brigham and Women’s Hospital,
Harvard Medical School, Boston, MA 02115, USA
| | - Yidan Lyu
- College of Pharmaceutical Sciences,
Zhejiang University, Hangzhou 310058, China
| | - Hao Huang
- College of Pharmaceutical Sciences,
Zhejiang University, Hangzhou 310058, China
- College of Chemical and Biological Engineering,
Zhejiang University, Hangzhou 310058, China
| | - Nenggan Zheng
- Qiushi Academy for Advanced Studies,
Zhejiang University, Hangzhou 310027, China
- College of Computer Science and Technology,
Zhejiang University, Hangzhou 310027, China
- State Key Lab of Brain-Machine Intelligence,
Zhejiang University, Hangzhou 310058, China
- CCAI by MOE and Zhejiang Provincial Government (ZJU), Hangzhou 310027, China
| | - John A. Rogers
- Querrey Simpson Institute for Bioelectronics,
Northwestern University, Evanston, IL 60208, USA
- Department of Biomedical Engineering,
Northwestern University, Evanston, IL 60208, USA
- Department of Materials Science and Engineering,
Northwestern University, Evanston, IL 60208, USA
- Department of Mechanical Engineering,
Northwestern University, Evanston, IL 60208, USA
| | - Kewang Nan
- College of Pharmaceutical Sciences,
Zhejiang University, Hangzhou 310058, China
- National Key Laboratory of Advanced Drug Delivery and Release Systems,
Zhejiang University, Hangzhou 310058, China
- Jinhua Institute of Zhejiang University, Jinhua 321299, China
| |
Collapse
|
14
|
Jiao R, Wang R, Wang Y, Cheung YK, Chen X, Wang X, Deng Y, Yu H. Vertical serpentine interconnect-enabled stretchable and curved electronics. MICROSYSTEMS & NANOENGINEERING 2023; 9:149. [PMID: 38025886 PMCID: PMC10679150 DOI: 10.1038/s41378-023-00625-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 09/30/2023] [Accepted: 10/25/2023] [Indexed: 12/01/2023]
Abstract
Stretchable and curved electronic devices are a promising technology trend due to their remarkable advantages. Many approaches have been developed to manufacture stretchable and curved electronics. Here, to allow such electronics to better serve practical applications, ranging from wearable devices to soft robotics, we propose a novel vertical serpentine conductor (VSC) with superior electrical stability to interconnect functional devices through a silicon-based microfabrication process. Conformal vacuum transfer printing (CVTP) technology was developed to transfer the networked platform onto complex curved surfaces to demonstrate feasibility. The mechanical and electrical performance were investigated numerically and experimentally. The VSC interconnected network provides a new approach for stretchable and curved electronics with high stretchability and reliability.
Collapse
Affiliation(s)
- Rui Jiao
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong SAR, 999077 China
| | - Ruoqin Wang
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong SAR, 999077 China
| | - Yixin Wang
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong SAR, 999077 China
| | - Yik Kin Cheung
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong SAR, 999077 China
| | - Xingru Chen
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong SAR, 999077 China
| | - Xiaoyi Wang
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong SAR, 999077 China
| | - Yang Deng
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong SAR, 999077 China
| | - Hongyu Yu
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong SAR, 999077 China
- HKUST Shenzhen-Hong Kong Collaborative Innovation Research Institute, Shenzhen, Guangdong 518045 China
| |
Collapse
|
15
|
Xu H, Zheng W, Zhang Y, Zhao D, Wang L, Zhao Y, Wang W, Yuan Y, Zhang J, Huo Z, Wang Y, Zhao N, Qin Y, Liu K, Xi R, Chen G, Zhang H, Tang C, Yan J, Ge Q, Cheng H, Lu Y, Gao L. A fully integrated, standalone stretchable device platform with in-sensor adaptive machine learning for rehabilitation. Nat Commun 2023; 14:7769. [PMID: 38012169 PMCID: PMC10682047 DOI: 10.1038/s41467-023-43664-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 11/16/2023] [Indexed: 11/29/2023] Open
Abstract
Post-surgical treatments of the human throat often require continuous monitoring of diverse vital and muscle activities. However, wireless, continuous monitoring and analysis of these activities directly from the throat skin have not been developed. Here, we report the design and validation of a fully integrated standalone stretchable device platform that provides wireless measurements and machine learning-based analysis of diverse vibrations and muscle electrical activities from the throat. We demonstrate that the modified composite hydrogel with low contact impedance and reduced adhesion provides high-quality long-term monitoring of local muscle electrical signals. We show that the integrated triaxial broad-band accelerometer also measures large body movements and subtle physiological activities/vibrations. We find that the combined data processed by a 2D-like sequential feature extractor with fully connected neurons facilitates the classification of various motion/speech features at a high accuracy of over 90%, which adapts to the data with noise from motion artifacts or the data from new human subjects. The resulting standalone stretchable device with wireless monitoring and machine learning-based processing capabilities paves the way to design and apply wearable skin-interfaced systems for the remote monitoring and treatment evaluation of various diseases.
Collapse
Affiliation(s)
- Hongcheng Xu
- School of Mechano-Electronic Engineering, Xidian University, Xian, 710071, China
| | - Weihao Zheng
- School of Mechano-Electronic Engineering, Xidian University, Xian, 710071, China
| | - Yang Zhang
- Department of Medical Electronics, School of Biomedical Engineering, Air Force Medical University, Xi'an, 710032, China
| | - Daqing Zhao
- Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Air Force Medical University, Xi'an, 710032, China
| | - Lu Wang
- Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Air Force Medical University, Xi'an, 710032, China
| | - Yunlong Zhao
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, 361102, China
| | - Weidong Wang
- School of Mechano-Electronic Engineering, Xidian University, Xian, 710071, China.
| | - Yangbo Yuan
- School of Mechano-Electronic Engineering, Xidian University, Xian, 710071, China
| | - Ji Zhang
- School of Mechano-Electronic Engineering, Xidian University, Xian, 710071, China
| | - Zimin Huo
- School of Mechano-Electronic Engineering, Xidian University, Xian, 710071, China
| | - Yuejiao Wang
- Applied Mechanics Laboratory, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China
| | - Ningjuan Zhao
- School of Mechano-Electronic Engineering, Xidian University, Xian, 710071, China
| | - Yuxin Qin
- School of Mechano-Electronic Engineering, Xidian University, Xian, 710071, China
| | - Ke Liu
- School of Mechano-Electronic Engineering, Xidian University, Xian, 710071, China
| | - Ruida Xi
- School of Mechano-Electronic Engineering, Xidian University, Xian, 710071, China
| | - Gang Chen
- School of Mechano-Electronic Engineering, Xidian University, Xian, 710071, China
| | - Haiyan Zhang
- School of Mechano-Electronic Engineering, Xidian University, Xian, 710071, China
| | - Chu Tang
- Engineering Research Center of Molecular and Neuro Imaging, Ministry of Education, School of Life Science and Technology, Xidian University, Xi'an, Shaanxi, 710126, China
| | - Junyu Yan
- School of Mechano-Electronic Engineering, Xidian University, Xian, 710071, China
| | - Qi Ge
- Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Huanyu Cheng
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA, 16802, USA.
| | - Yang Lu
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam, Hong Kong, 999077, Hong Kong SAR.
| | - Libo Gao
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, 361102, China.
| |
Collapse
|
16
|
Mousavi A, Rahimnejad M, Azimzadeh M, Akbari M, Savoji H. Recent advances in smart wearable sensors as electronic skin. J Mater Chem B 2023; 11:10332-10354. [PMID: 37909384 DOI: 10.1039/d3tb01373a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
Flexible and multifunctional electronic devices and soft robots inspired by human organs, such as skin, have many applications. However, the emergence of electronic skins (e-skins) or textiles in biomedical engineering has made a great revolution in a myriad of people's lives who suffer from different types of diseases and problems in which their skin and muscles lose their appropriate functions. In this review, recent advances in the sensory function of the e-skins are described. Furthermore, we have categorized them from the sensory function perspective and highlighted their advantages and limitations. The categories are tactile sensors (including capacitive, piezoresistive, piezoelectric, triboelectric, and optical), temperature, and multi-sensors. In addition, we summarized the most recent advancements in sensors and their particular features. The role of material selection and structure in sensory function and other features of the e-skins are also discussed. Finally, current challenges and future prospects of these systems towards advanced biomedical applications are elaborated.
Collapse
Affiliation(s)
- Ali Mousavi
- Institute of Biomedical Engineering, Department of Pharmacology and Physiology, Faculty of Medicine, University of Montreal, Montreal, QC, H3T 1J4, Canada.
- Research Center, Sainte-Justine University Hospital, Montreal, QC, H3T 1C5, Canada
- Montreal TransMedTech Institute, Montreal, QC, H3T 1J4, Canada
| | - Maedeh Rahimnejad
- Department of Cariology, Restorative Sciences, and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA
| | - Mostafa Azimzadeh
- Laboratory for Innovations in Micro Engineering (LiME), Department of Mechanical Engineering, University of Victoria, Victoria, BC, V8P 5C2, Canada
| | - Mohsen Akbari
- Laboratory for Innovations in Micro Engineering (LiME), Department of Mechanical Engineering, University of Victoria, Victoria, BC, V8P 5C2, Canada
| | - Houman Savoji
- Institute of Biomedical Engineering, Department of Pharmacology and Physiology, Faculty of Medicine, University of Montreal, Montreal, QC, H3T 1J4, Canada.
- Research Center, Sainte-Justine University Hospital, Montreal, QC, H3T 1C5, Canada
- Montreal TransMedTech Institute, Montreal, QC, H3T 1J4, Canada
| |
Collapse
|
17
|
Cao S, Wei Y, Bo R, Yun X, Xu S, Guan Y, Zhao J, Lan Y, Zhang B, Xiong Y, Jin T, Lai Y, Chang J, Zhao Q, Wei M, Shao Y, Quan Q, Zhang Y. Inversely engineered biomimetic flexible network scaffolds for soft tissue regeneration. SCIENCE ADVANCES 2023; 9:eadi8606. [PMID: 37756408 PMCID: PMC10530085 DOI: 10.1126/sciadv.adi8606] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 08/25/2023] [Indexed: 09/29/2023]
Abstract
Graft-host mechanical mismatch has been a longstanding issue in clinical applications of synthetic scaffolds for soft tissue regeneration. Although numerous efforts have been devoted to resolve this grand challenge, the regenerative performance of existing synthetic scaffolds remains limited by slow tissue growth (comparing to autograft) and mechanical failures. We demonstrate a class of rationally designed flexible network scaffolds that can precisely replicate nonlinear mechanical responses of soft tissues and enhance tissue regeneration via reduced graft-host mechanical mismatch. Such flexible network scaffold includes a tubular network frame containing inversely engineered curved microstructures to produce desired mechanical properties, with an electrospun ultrathin film wrapped around the network to offer a proper microenvironment for cell growth. Using rat models with sciatic nerve defects or Achilles tendon injuries, our network scaffolds show regenerative performances evidently superior to that of clinically approved electrospun conduit scaffolds and achieve similar outcomes to autologous nerve transplantation in prevention of target organ atrophy and recovery of static sciatic index.
Collapse
Affiliation(s)
- Shunze Cao
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R. China
- Laboratory of Flexible Electronics Technology, Tsinghua University, Beijing 100084, P.R. China
| | - Yu Wei
- Department of Orthopedic Surgery, The Fourth Medical Center of Chinese PLA General Hospital, Beijing 100142, P.R. China
| | - Renheng Bo
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R. China
- Laboratory of Flexible Electronics Technology, Tsinghua University, Beijing 100084, P.R. China
| | - Xing Yun
- Department of Orthopedic Surgery, The Fourth Medical Center of Chinese PLA General Hospital, Beijing 100142, P.R. China
| | - Shiwei Xu
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R. China
- Laboratory of Flexible Electronics Technology, Tsinghua University, Beijing 100084, P.R. China
| | - Yanjun Guan
- Department of Orthopedic Surgery, Key Laboratory of Musculoskeletal Trauma & War Injuries PLA, Beijing 100142, P.R. China
- Key Lab of Regenerative Medicine in Orthopedics, Chinese PLA General Hospital, Beijing 100142, Beijing, P.R. China
| | - Jianzhong Zhao
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R. China
- Laboratory of Flexible Electronics Technology, Tsinghua University, Beijing 100084, P.R. China
| | - Yu Lan
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R. China
- Laboratory of Flexible Electronics Technology, Tsinghua University, Beijing 100084, P.R. China
| | - Bin Zhang
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R. China
| | - Yingjie Xiong
- Department of Orthopedic Surgery, Key Laboratory of Musculoskeletal Trauma & War Injuries PLA, Beijing 100142, P.R. China
- Key Lab of Regenerative Medicine in Orthopedics, Chinese PLA General Hospital, Beijing 100142, Beijing, P.R. China
| | - Tianqi Jin
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R. China
- Laboratory of Flexible Electronics Technology, Tsinghua University, Beijing 100084, P.R. China
| | - Yuchen Lai
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R. China
- Laboratory of Flexible Electronics Technology, Tsinghua University, Beijing 100084, P.R. China
| | - Jiahui Chang
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R. China
| | - Qing Zhao
- Department of Orthopedic Surgery, The Fourth Medical Center of Chinese PLA General Hospital, Beijing 100142, P.R. China
- Department of Orthopedic Surgery, Key Laboratory of Musculoskeletal Trauma & War Injuries PLA, Beijing 100142, P.R. China
- Key Lab of Regenerative Medicine in Orthopedics, Chinese PLA General Hospital, Beijing 100142, Beijing, P.R. China
| | - Min Wei
- Department of Orthopedic Surgery, The Fourth Medical Center of Chinese PLA General Hospital, Beijing 100142, P.R. China
| | - Yue Shao
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R. China
- Institute of Biomechanics and Medical Engineering, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R. China
| | - Qi Quan
- Department of Orthopedic Surgery, The Fourth Medical Center of Chinese PLA General Hospital, Beijing 100142, P.R. China
- Department of Orthopedic Surgery, Key Laboratory of Musculoskeletal Trauma & War Injuries PLA, Beijing 100142, P.R. China
- Key Lab of Regenerative Medicine in Orthopedics, Chinese PLA General Hospital, Beijing 100142, Beijing, P.R. China
| | - Yihui Zhang
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P.R. China
- Laboratory of Flexible Electronics Technology, Tsinghua University, Beijing 100084, P.R. China
| |
Collapse
|
18
|
Bo R, Xu S, Yang Y, Zhang Y. Mechanically-Guided 3D Assembly for Architected Flexible Electronics. Chem Rev 2023; 123:11137-11189. [PMID: 37676059 PMCID: PMC10540141 DOI: 10.1021/acs.chemrev.3c00335] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Indexed: 09/08/2023]
Abstract
Architected flexible electronic devices with rationally designed 3D geometries have found essential applications in biology, medicine, therapeutics, sensing/imaging, energy, robotics, and daily healthcare. Mechanically-guided 3D assembly methods, exploiting mechanics principles of materials and structures to transform planar electronic devices fabricated using mature semiconductor techniques into 3D architected ones, are promising routes to such architected flexible electronic devices. Here, we comprehensively review mechanically-guided 3D assembly methods for architected flexible electronics. Mainstream methods of mechanically-guided 3D assembly are classified and discussed on the basis of their fundamental deformation modes (i.e., rolling, folding, curving, and buckling). Diverse 3D interconnects and device forms are then summarized, which correspond to the two key components of an architected flexible electronic device. Afterward, structure-induced functionalities are highlighted to provide guidelines for function-driven structural designs of flexible electronics, followed by a collective summary of their resulting applications. Finally, conclusions and outlooks are given, covering routes to achieve extreme deformations and dimensions, inverse design methods, and encapsulation strategies of architected 3D flexible electronics, as well as perspectives on future applications.
Collapse
Affiliation(s)
- Renheng Bo
- Applied
Mechanics Laboratory, Department of Engineering Mechanics, Tsinghua University, 100084 Beijing, People’s Republic of China
- Laboratory
of Flexible Electronics Technology, Tsinghua
University, 100084 Beijing, People’s Republic
of China
| | - Shiwei Xu
- Applied
Mechanics Laboratory, Department of Engineering Mechanics, Tsinghua University, 100084 Beijing, People’s Republic of China
- Laboratory
of Flexible Electronics Technology, Tsinghua
University, 100084 Beijing, People’s Republic
of China
| | - Youzhou Yang
- Applied
Mechanics Laboratory, Department of Engineering Mechanics, Tsinghua University, 100084 Beijing, People’s Republic of China
- Laboratory
of Flexible Electronics Technology, Tsinghua
University, 100084 Beijing, People’s Republic
of China
| | - Yihui Zhang
- Applied
Mechanics Laboratory, Department of Engineering Mechanics, Tsinghua University, 100084 Beijing, People’s Republic of China
- Laboratory
of Flexible Electronics Technology, Tsinghua
University, 100084 Beijing, People’s Republic
of China
| |
Collapse
|
19
|
Aung HH, Qi Z, Niu Y, Guo Y. Rapid Production of Carbon Nanotube Film for Bioelectronic Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13111749. [PMID: 37299652 DOI: 10.3390/nano13111749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/16/2023] [Accepted: 05/22/2023] [Indexed: 06/12/2023]
Abstract
Flexible electronics have enormous potential for applications that are not achievable in standard electronics. In particular, important technological advances have been made in terms of their performance characteristics and potential range of applications, ranging from medical care, packaging, lighting and signage, consumer electronics, and alternative energy. In this study, we develop a novel method for fabricating flexible conductive carbon nanotube (CNT) films on various substrates. The fabricated conductive CNT films exhibited satisfactory conductivity, flexibility, and durability. The conductivity of the conductive CNT film was maintained at the same level of sheet resistance after bending cycles. The fabrication process is dry, solution-free, and convenient for mass production. Scanning electron microscopy revealed that CNTs were uniformly dispersed over the substrate. The prepared conductive CNT film was applied to collect an electrocardiogram (ECG) signal, which showed good performance compared to traditional electrodes. The conductive CNT film determined the long-term stability of the electrodes under bending or other mechanical stresses. The well-demonstrated fabrication process for flexible conductive CNT films has great potential in the field of bioelectronics.
Collapse
Affiliation(s)
- Hein Htet Aung
- School of Physics, Beijing Institute of Technology, Haidian, Beijing 100081, China
| | - Zhiying Qi
- School of Physics, Beijing Institute of Technology, Haidian, Beijing 100081, China
| | - Yue Niu
- School of Physics, Beijing Institute of Technology, Haidian, Beijing 100081, China
| | - Yao Guo
- School of Physics, Beijing Institute of Technology, Haidian, Beijing 100081, China
| |
Collapse
|
20
|
Liu C, Wang Y, Wang S, Xia X, Xiao H, Liu J, Hu S, Yi X, Liu Y, Wu Y, Shang J, Li RW. Design and 3D Printing of Stretchable Conductor with High Dynamic Stability. MATERIALS (BASEL, SWITZERLAND) 2023; 16:3098. [PMID: 37109934 PMCID: PMC10146708 DOI: 10.3390/ma16083098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/10/2023] [Accepted: 04/12/2023] [Indexed: 06/19/2023]
Abstract
As an indispensable part of wearable devices and mechanical arms, stretchable conductors have received extensive attention in recent years. The design of a high-dynamic-stability, stretchable conductor is the key technology to ensure the normal transmission of electrical signals and electrical energy of wearable devices under large mechanical deformation, which has always been an important research topic domestically and abroad. In this paper, a stretchable conductor with a linear bunch structure is designed and prepared by combining numerical modeling and simulation with 3D printing technology. The stretchable conductor consists of a 3D-printed bunch-structured equiwall elastic insulating resin tube and internally filled free-deformable liquid metal. This conductor has a very high conductivity exceeding 104 S cm-1, good stretchability with an elongation at break exceeding 50%, and great tensile stability, with a relative change in resistance of only about 1% at 50% tensile strain. Finally, this paper demonstrates it as a headphone cable (transmitting electrical signals) and a mobile phone charging wire (transmitting electrical energy), which proves its good mechanical and electrical properties and shows good application potential.
Collapse
Affiliation(s)
- Chao Liu
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
- CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Yuwei Wang
- CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Shengding Wang
- CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Xiangling Xia
- CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Huiyun Xiao
- CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Jinyun Liu
- CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Siqi Hu
- CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Xiaohui Yi
- CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Yiwei Liu
- CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Yuanzhao Wu
- CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Jie Shang
- CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Run-Wei Li
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
21
|
Li J, Fu Y, Zhou J, Yao K, Ma X, Gao S, Wang Z, Dai JG, Lei D, Yu X. Ultrathin, soft, radiative cooling interfaces for advanced thermal management in skin electronics. SCIENCE ADVANCES 2023; 9:eadg1837. [PMID: 37027471 PMCID: PMC10081843 DOI: 10.1126/sciadv.adg1837] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 03/03/2023] [Indexed: 06/19/2023]
Abstract
Thermal management plays a notable role in electronics, especially for the emerging wearable and skin electronics, as the level of integration, multifunction, and miniaturization of such electronics is determined by thermal management. Here, we report a generic thermal management strategy by using an ultrathin, soft, radiative-cooling interface (USRI), which allows cooling down the temperature in skin electronics through both radiative and nonradiative heat transfer, achieving temperature reduction greater than 56°C. The light and intrinsically flexible nature of the USRI enables its use as a conformable sealing layer and hence can be readily integrated with skin electronics. Demonstrations include passive cooling down of Joule heat for flexible circuits, improving working efficiency for epidermal electronics, and stabling performance outputs for skin-interfaced wireless photoplethysmography sensors. These results offer an alternative pathway toward achieving effective thermal management in advanced skin-interfaced electronics for multifunctionally and wirelessly operated health care monitoring.
Collapse
Affiliation(s)
- Jiyu Li
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong, China
- Hong Kong Center for Cerebra-Cardiovascular Health Engineering, Hong Kong Science Park, New Territories 999077, Hong Kong, China
| | - Yang Fu
- Department of Materials Science and Engineering, The Hong Kong Institute of Clean Energy, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong, China
| | - Jingkun Zhou
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong, China
- Hong Kong Center for Cerebra-Cardiovascular Health Engineering, Hong Kong Science Park, New Territories 999077, Hong Kong, China
| | - Kuanming Yao
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong, China
| | - Xue Ma
- Department of Materials Science and Engineering, The Hong Kong Institute of Clean Energy, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong, China
| | - Shouwei Gao
- Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Zuankai Wang
- Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Jian-Guo Dai
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, China
| | - Dangyuan Lei
- Department of Materials Science and Engineering, The Hong Kong Institute of Clean Energy, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong, China
| | - Xinge Yu
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong, China
- Hong Kong Center for Cerebra-Cardiovascular Health Engineering, Hong Kong Science Park, New Territories 999077, Hong Kong, China
| |
Collapse
|
22
|
Won SM, Cai L, Gutruf P, Rogers JA. Wireless and battery-free technologies for neuroengineering. Nat Biomed Eng 2023; 7:405-423. [PMID: 33686282 PMCID: PMC8423863 DOI: 10.1038/s41551-021-00683-3] [Citation(s) in RCA: 101] [Impact Index Per Article: 101.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Accepted: 12/28/2020] [Indexed: 12/16/2022]
Abstract
Tethered and battery-powered devices that interface with neural tissues can restrict natural motions and prevent social interactions in animal models, thereby limiting the utility of these devices in behavioural neuroscience research. In this Review Article, we discuss recent progress in the development of miniaturized and ultralightweight devices as neuroengineering platforms that are wireless, battery-free and fully implantable, with capabilities that match or exceed those of wired or battery-powered alternatives. Such classes of advanced neural interfaces with optical, electrical or fluidic functionality can also combine recording and stimulation modalities for closed-loop applications in basic studies or in the practical treatment of abnormal physiological processes.
Collapse
Affiliation(s)
- Sang Min Won
- Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, South Korea
| | - Le Cai
- Biomedical Engineering, College of Engineering, The University of Arizona, Tucson, AZ, USA
| | - Philipp Gutruf
- Biomedical Engineering, College of Engineering, The University of Arizona, Tucson, AZ, USA.
- Bio5 Institute and Neuroscience GIDP, University of Arizona, Tucson, AZ, USA.
- Department of Electrical and Computer Engineering, University of Arizona, Tucson, AZ, USA.
| | - John A Rogers
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA.
- Center for Bio-Integrated Electronics, Northwestern University, Evanston, IL, USA.
- Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA.
- Center for Advanced Molecular Imaging, Northwestern University, Evanston, IL, USA.
- Department of Mechanical Engineering, Northwestern University, Evanston, IL, USA.
- Department of Chemistry, Northwestern University, Evanston, IL, USA.
- Department of Neurological Surgery, Northwestern University, Evanston, IL, USA.
- Department of Electrical and Computer Engineering, Northwestern University, Evanston, IL, USA.
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Evanston, IL, USA.
| |
Collapse
|
23
|
Liu N, Sun Q, Yang Z, Shan L, Wang Z, Li H. Wrinkled Interfaces: Taking Advantage of Anisotropic Wrinkling to Periodically Pattern Polymer Surfaces. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2207210. [PMID: 36775851 PMCID: PMC10131883 DOI: 10.1002/advs.202207210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Indexed: 06/18/2023]
Abstract
Periodically patterned surfaces can cause special surface properties and are employed as functional building blocks in many devices, yet remaining challenges in fabrication. Advancements in fabricating structured polymer surfaces for obtaining periodic patterns are accomplished by adopting "top-down" strategies based on self-assembly or physico-chemical growth of atoms, molecules, or particles or "bottom-up" strategies ranging from traditional micromolding (embossing) or micro/nanoimprinting to novel laser-induced periodic surface structure, soft lithography, or direct laser interference patterning among others. Thus, technological advances directly promote higher resolution capabilities. Contrasted with the above techniques requiring highly sophisticated tools, surface instabilities taking advantage of the intrinsic properties of polymers induce surface wrinkling in order to fabricate periodically oriented wrinkled patterns. Such abundant and elaborate patterns are obtained as a result of self-organizing processes that are rather difficult if not impossible to fabricate through conventional patterning techniques. Focusing on oriented wrinkles, this review thoroughly describes the formation mechanisms and fabrication approaches for oriented wrinkles, as well as their fine-tuning in the wavelength, amplitude, and orientation control. Finally, the major applications in which oriented wrinkled interfaces are already in use or may be prospective in the near future are overviewed.
Collapse
Affiliation(s)
- Ning Liu
- National‐Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources UtilizationSchool of Chemical Engineering and TechnologyHebei University of TechnologyTianjin300130China
| | - Qichao Sun
- National‐Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources UtilizationSchool of Chemical Engineering and TechnologyHebei University of TechnologyTianjin300130China
| | - Zhensheng Yang
- National‐Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources UtilizationSchool of Chemical Engineering and TechnologyHebei University of TechnologyTianjin300130China
| | - Linna Shan
- National‐Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources UtilizationSchool of Chemical Engineering and TechnologyHebei University of TechnologyTianjin300130China
| | - Zhiying Wang
- National‐Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources UtilizationSchool of Chemical Engineering and TechnologyHebei University of TechnologyTianjin300130China
| | - Hao Li
- National‐Local Joint Engineering Laboratory for Energy Conservation of Chemical Process Integration and Resources UtilizationSchool of Chemical Engineering and TechnologyHebei University of TechnologyTianjin300130China
| |
Collapse
|
24
|
Wang L, Yi Z, Zhao Y, Liu Y, Wang S. Stretchable conductors for stretchable field-effect transistors and functional circuits. Chem Soc Rev 2023; 52:795-835. [PMID: 36562312 DOI: 10.1039/d2cs00837h] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Stretchable electronics have received intense attention due to their broad application prospects in many areas, and can withstand large deformations and form close contact with curved surfaces. Stretchable conductors are vital components of stretchable electronic devices used in wearables, soft robots, and human-machine interactions. Recent advances in stretchable conductors have motivated basic scientific and technological research efforts. Here, we outline and analyse the development of stretchable conductors in transistors and circuits, and examine advances in materials, device engineering, and preparation technologies. We divide the existing approaches to constructing stretchable transistors with stretchable conductors into the following two types: geometric engineering and intrinsic stretchability engineering. Finally, we consider the challenges and outlook in this field for delivering stretchable electronics.
Collapse
Affiliation(s)
- Liangjie Wang
- Department of Materials Science, Fudan University, Shanghai 200433, P. R. China.
| | - Zhengran Yi
- Department of Materials Science, Fudan University, Shanghai 200433, P. R. China.
| | - Yan Zhao
- Department of Materials Science, Fudan University, Shanghai 200433, P. R. China.
| | - Yunqi Liu
- Department of Materials Science, Fudan University, Shanghai 200433, P. R. China.
| | - Shuai Wang
- Department of Materials Science, Fudan University, Shanghai 200433, P. R. China. .,School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China.
| |
Collapse
|
25
|
Lu Q, Zhao Y, Huang L, An J, Zheng Y, Yap EH. Low-Dimensional-Materials-Based Flexible Artificial Synapse: Materials, Devices, and Systems. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:373. [PMID: 36770333 PMCID: PMC9921566 DOI: 10.3390/nano13030373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/10/2023] [Accepted: 01/15/2023] [Indexed: 06/18/2023]
Abstract
With the rapid development of artificial intelligence and the Internet of Things, there is an explosion of available data for processing and analysis in any domain. However, signal processing efficiency is limited by the Von Neumann structure for the conventional computing system. Therefore, the design and construction of artificial synapse, which is the basic unit for the hardware-based neural network, by mimicking the structure and working mechanisms of biological synapses, have attracted a great amount of attention to overcome this limitation. In addition, a revolution in healthcare monitoring, neuro-prosthetics, and human-machine interfaces can be further realized with a flexible device integrating sensing, memory, and processing functions by emulating the bionic sensory and perceptual functions of neural systems. Until now, flexible artificial synapses and related neuromorphic systems, which are capable of responding to external environmental stimuli and processing signals efficiently, have been extensively studied from material-selection, structure-design, and system-integration perspectives. Moreover, low-dimensional materials, which show distinct electrical properties and excellent mechanical properties, have been extensively employed in the fabrication of flexible electronics. In this review, recent progress in flexible artificial synapses and neuromorphic systems based on low-dimensional materials is discussed. The potential and the challenges of the devices and systems in the application of neuromorphic computing and sensory systems are also explored.
Collapse
Affiliation(s)
- Qifeng Lu
- School of CHIPS, XJTLU Entrepreneur College (Taicang), Xi’an Jiaotong-Liverpool University, 111 Taicang Avenue, Taicang, Suzhou 215488, China
| | - Yinchao Zhao
- School of CHIPS, XJTLU Entrepreneur College (Taicang), Xi’an Jiaotong-Liverpool University, 111 Taicang Avenue, Taicang, Suzhou 215488, China
| | - Long Huang
- School of Intelligent Manufacturing Ecosystem, XJTLU Entrepreneur College (Taicang), Xi’an Jiaotong-Liverpool University, 111 Taicang Avenue, Taicang, Suzhou 215488, China
| | - Jiabao An
- School of Intelligent Manufacturing Ecosystem, XJTLU Entrepreneur College (Taicang), Xi’an Jiaotong-Liverpool University, 111 Taicang Avenue, Taicang, Suzhou 215488, China
| | - Yufan Zheng
- School of Intelligent Manufacturing Ecosystem, XJTLU Entrepreneur College (Taicang), Xi’an Jiaotong-Liverpool University, 111 Taicang Avenue, Taicang, Suzhou 215488, China
| | - Eng Hwa Yap
- School of Robotics, XJTLU Entrepreneur College (Taicang), Xi’an Jiaotong-Liverpool University, 111 Taicang Avenue, Taicang, Suzhou 215488, China
| |
Collapse
|
26
|
He T, Wen F, Yang Y, Le X, Liu W, Lee C. Emerging Wearable Chemical Sensors Enabling Advanced Integrated Systems toward Personalized and Preventive Medicine. Anal Chem 2023; 95:490-514. [PMID: 36625107 DOI: 10.1021/acs.analchem.2c04527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Tianyiyi He
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117583, Singapore.,Center for Intelligent Sensors and MEMS, National University of Singapore, Block E6 #05-11, 5 Engineering Drive 1, Singapore 117608, Singapore
| | - Feng Wen
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117583, Singapore.,Center for Intelligent Sensors and MEMS, National University of Singapore, Block E6 #05-11, 5 Engineering Drive 1, Singapore 117608, Singapore
| | - Yanqin Yang
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117583, Singapore.,Center for Intelligent Sensors and MEMS, National University of Singapore, Block E6 #05-11, 5 Engineering Drive 1, Singapore 117608, Singapore
| | - Xianhao Le
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117583, Singapore.,Center for Intelligent Sensors and MEMS, National University of Singapore, Block E6 #05-11, 5 Engineering Drive 1, Singapore 117608, Singapore
| | - Weixin Liu
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117583, Singapore.,Center for Intelligent Sensors and MEMS, National University of Singapore, Block E6 #05-11, 5 Engineering Drive 1, Singapore 117608, Singapore
| | - Chengkuo Lee
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117583, Singapore.,Center for Intelligent Sensors and MEMS, National University of Singapore, Block E6 #05-11, 5 Engineering Drive 1, Singapore 117608, Singapore
| |
Collapse
|
27
|
Neal CAP, León V, Quan MC, Chibambo NO, Calabrese MA. Tuning the thermodynamic, optical, and rheological properties of thermoresponsive polymer solutions via silica nanoparticle shape and concentration. J Colloid Interface Sci 2023; 629:878-895. [PMID: 36202031 PMCID: PMC10593120 DOI: 10.1016/j.jcis.2022.08.139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 08/12/2022] [Accepted: 08/22/2022] [Indexed: 10/14/2022]
Abstract
HYPOTHESIS The shape and quantity of hydrophilic silica nanoparticles (NPs) can be used to tune the microstructure, rheology, and stability of phase-separating polymer solutions. In thermoresponsive polymer systems, silica nanospheres are well-studied whereas anisotropic NPs have little literature precedent. Here, we hypothesize that NP shape and concentration lower the onset of rheological and turbidimetric transitions of aqueous poly(N-isopropyl acrylamide) (PNIPAM) solutions. EXPERIMENTS Differential scanning calorimetry (DSC), Fourier-transform infrared spectroscopy (FTIR), turbidimetry, and oscillatory rheology are utilized to examine interactions between NPs, PNIPAM, and water and to track changes in phase separation and rheological properties due to NP concentration and shape. FINDINGS NP addition reduces phase separation enthalpy due to PNIPAM-NP hydrogen bonding interactions, the degree to which depends on polymer content. While NP addition minorly impacts thermodynamic and optical properties, rheological transitions and associated rheological properties are dramatically altered with increasing temperature, and depend on NP quantity, shape, and polymer molecular weight. Thus NP content and shape can be used to finely tune transition temperatures and mechanical properties for applications in stimuli-responsive materials.
Collapse
Affiliation(s)
- Christopher A P Neal
- Department of Chemical Engineering and Materials Science, University of Minnesota Twin Cities, Minneapolis, MN 55455, United States
| | - Valeria León
- Mechanical Engineering Department, The University of Texas Rio Grande Valley, Edinburg, TX 78539, United States
| | - Michelle C Quan
- Department of Chemical Engineering and Materials Science, University of Minnesota Twin Cities, Minneapolis, MN 55455, United States
| | - Nondumiso O Chibambo
- Department of Chemical Engineering and Materials Science, University of Minnesota Twin Cities, Minneapolis, MN 55455, United States
| | - Michelle A Calabrese
- Department of Chemical Engineering and Materials Science, University of Minnesota Twin Cities, Minneapolis, MN 55455, United States.
| |
Collapse
|
28
|
High-resolution 3D printing for healthcare. 3D Print Med 2023. [DOI: 10.1016/b978-0-323-89831-7.00013-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
|
29
|
Mishra S, Mohanty S, Ramadoss A. Functionality of Flexible Pressure Sensors in Cardiovascular Health Monitoring: A Review. ACS Sens 2022; 7:2495-2520. [PMID: 36036627 DOI: 10.1021/acssensors.2c00942] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
As the highest percentage of global mortality is caused by several cardiovascular diseases (CVD), maintenance and monitoring of a healthy cardiovascular condition have become the primary concern of each and every individual. Simultaneously, recent progress and advances in wearable pressure sensor technology have provided many pathways to monitor and detect underlying cardiovascular illness in terms of irregularities in heart rate, blood pressure, and blood oxygen saturation. These pressure sensors can be comfortably attached onto human skin or can be implanted on the surface of vascular grafts for uninterrupted monitoring of arterial blood pressure. While the traditional monitoring systems are time-consuming, expensive, and not user-friendly, flexible sensor technology has emerged as a promising and dynamic practice to collect important health information at a comparatively low cost in a reliable and user-friendly way. This Review explores the importance and necessity of cardiovascular health monitoring while emphasizing the role of flexible pressure sensors in monitoring patients' health conditions to avoid adverse effects. A comprehensive discussion on the current research progress along with the real-time impact and accessibility of pressure sensors developed for cardiovascular health monitoring applications has been provided.
Collapse
Affiliation(s)
- Suvrajyoti Mishra
- School for Advanced Research in Petrochemicals: Laboratory for Advanced Research in Polymeric Materials (LARPM), Central Institute of Petrochemicals Engineering and Technology (CIPET), Bhubaneswar-751024, India
| | - Smita Mohanty
- School for Advanced Research in Petrochemicals: Laboratory for Advanced Research in Polymeric Materials (LARPM), Central Institute of Petrochemicals Engineering and Technology (CIPET), Bhubaneswar-751024, India
| | - Ananthakumar Ramadoss
- School for Advanced Research in Petrochemicals: Laboratory for Advanced Research in Polymeric Materials (LARPM), Central Institute of Petrochemicals Engineering and Technology (CIPET), Bhubaneswar-751024, India
| |
Collapse
|
30
|
He Z, Wang K, Zhao Z, Zhang T, Li Y, Wang L. A Wearable Flexible Acceleration Sensor for Monitoring Human Motion. BIOSENSORS 2022; 12:620. [PMID: 36005016 PMCID: PMC9406085 DOI: 10.3390/bios12080620] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 07/31/2022] [Accepted: 08/06/2022] [Indexed: 06/01/2023]
Abstract
Skin-inspired flexible wearable acceleration sensors attract much attention due to their advantages of portability, personalized and comfortable experience, and potential application in healthcare monitoring, human-machine interfaces, artificial intelligence, and physical sports performance evaluation. This paper presents a flexible wearable acceleration sensor for monitoring human motion by introducing the island-bridge configuration and serpentine interconnects. Compared with traditional wearable accelerometers, the flexible accelerometer proposed in this paper improves the wearing comfort while reducing the cost of the device. Simulation and experiments under bending, stretching, and torsion conditions demonstrate that the flexible performance of the flexible acceleration sensor can meet the needs of monitoring the daily movement of the human body, and it can work normally under various conditions. The measurement accuracy of the flexible acceleration sensor is verified by comparing it with the data of the commercial acceleration sensor. The flexible acceleration sensor can measure the acceleration and the angular velocity of the human body with six degrees of freedom and recognize the gesture and motion features according to the acceleration characteristics. The presented flexible accelerometers provide great potential in recognizing the motion features that are critical for healthcare monitoring and physical sports performance evaluation.
Collapse
Affiliation(s)
- Zeqing He
- Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
| | - Kuan Wang
- Institute of Solid Mechanics, Beihang University (BUAA), Beijing 100191, China
| | - Zhao Zhao
- Institute of Solid Mechanics, Beihang University (BUAA), Beijing 100191, China
| | - Taihua Zhang
- Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
| | - Yuhang Li
- Institute of Solid Mechanics, Beihang University (BUAA), Beijing 100191, China
| | - Liu Wang
- Key Laboratory of Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, School of Engineering Medicine, Beihang University, Beijing 100083, China
| |
Collapse
|
31
|
Chen X, Li Y, Wang X, Yu H. Origami Paper-Based Stretchable Humidity Sensor for Textile-Attachable Wearable Electronics. ACS APPLIED MATERIALS & INTERFACES 2022; 14:36227-36237. [PMID: 35912486 DOI: 10.1021/acsami.2c08245] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Flexible and stretchable humidity sensors for wearable purposes have become increasingly important in health care and physiological signal monitoring. However, to the authors' knowledge, there is no report on flexible and stretchable paper-based humidity sensors that are low-cost, easily fabricated, and environmentally friendly. In this work, for the first time, we propose a stretchable, textile-compatible paper-based origami humidity sensor (POHS). The POHS can achieve good stretchability by integrating origami folding structures with a paper substrate, in which an airlaid paper acts as both a sensing material and a sensor substrate. This sensor has high sensitivity, good response, and recovery properties with excellent stability during deformation. This sensor has proved to be capable of dynamically monitoring the breathing rate after 300 folding and unfolding cycles. The flexible and stretchable nature of our POHS ensures that it is compatible for textile attachment and its utility for wearable applications, including respiration rate monitoring and diaper wetting detection. The facile fabrication process and convenient disposal method of the POHS proposed in this study provide feasible solutions for the development of low-cost wearable humidity sensors.
Collapse
Affiliation(s)
- Xingru Chen
- Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, Kowloon, Hong Kong SAR
| | - Yongkai Li
- Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, Kowloon, Hong Kong SAR
| | - Xiaoyi Wang
- Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, Kowloon, Hong Kong SAR
- The School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing 100081, China
| | - Hongyu Yu
- Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology, Kowloon, Hong Kong SAR
| |
Collapse
|
32
|
Highly Flexible Stencil Printed Alkaline Ag2O-Zn Battery for Wearable Electronics. BATTERIES-BASEL 2022. [DOI: 10.3390/batteries8070074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Flexible power sources such as batteries are essential to realize wearable and conformable electronic devices. The mechanical stability of the electrodes plays an important role in determining the overall flexibility of the battery. Styrene block copolymers-based elastomers have the potential to be used as binder materials in the electrodes for retaining their structural integrity under flexing during regular use. In this work, we demonstrate a stencil-printed flexible primary Ag2O-Zn battery on a nonconductive nylon mesh substrate that uses styrene-butadiene rubber as the anodic binder. A polyacrylic acid-based alkaline polymer gel is used as an electrolyte. The flexible alkaline battery achieved discharge capacities of and without and with a bend radius of 0.8 , respectively, under a constant current load condition of .
Collapse
|
33
|
Liquid-Metal-Mediated Electrocatalyst Support Engineering toward Enhanced Water Oxidation Reaction. NANOMATERIALS 2022; 12:nano12132153. [PMID: 35807989 PMCID: PMC9268020 DOI: 10.3390/nano12132153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/30/2022] [Accepted: 06/18/2022] [Indexed: 11/17/2022]
Abstract
Functional and robust catalyst supports are vital in the catalysis field, and the development of universal and efficient catalyst support is essential but challenging. Traditional catalyst fabrication methods include the carbonization of ordered templates and high−temperature dehydration. All these methods involve complicated meso−structural disordering and allow little control over morphology. To this end, a eutectic GaInSn alloy (EGaInSn) was proposed and employed as an intermediate to fabricate low−dimensional ordered catalyst support materials. Owing to the lower Gibbs free energy of Ga2O3 compared to certain types of metals (e.g., Al, Mn, Ce, etc.), we found that a skinny layer of metal oxides could be formed and exfoliated into a two−dimensional nanosheet at the interface of liquid metal (LM) and water. As such, EGaInSn was herein employed as a reaction matrix to synthesize a range of two−dimensional catalyst supports with large specific surface areas and structural stability. As a proof−of-concept, Al2O3 and MnO were fabricated with the assistance of LM and were used as catalyst supports for loading Ru, demonstrating enhanced structural stability and overall electrocatalytic performance in the oxygen evolution reaction. This work opens an avenue for the development of functional support materials mediated by LM, which would play a substantial role in electrocatalytic reactions and beyond.
Collapse
|
34
|
Large Curvature Self-Folding Method of a Thick Metal Layer for Hinged Origami/Kirigami Stretchable Electronic Devices. MICROMACHINES 2022; 13:mi13060907. [PMID: 35744521 PMCID: PMC9227321 DOI: 10.3390/mi13060907] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/02/2022] [Accepted: 06/06/2022] [Indexed: 01/25/2023]
Abstract
A self-folding method that can fold a thick (~10 μm) metal layer with a large curvature (>1 mm−1) and is resistant to repetitive folding deformation is proposed. Given the successful usage of hinged origami/kirigami structures forms in deployable structures, they show strong potential for application in stretchable electronic devices. There are, however, two key difficulties in applying origami/kirigami methods to stretchable electronic devices. The first is that a thick metal layer used as the conductive layer of electronic devices is too hard for self-folding as it is. Secondly, a thick metal layer breaks on repetitive folding deformation at a large curvature. To overcome these difficulties, this paper proposes a self-folding method using hinges on a thick metal layer by applying a meander structure. Such a structure can be folded at a large curvature even by weak driving forces (such as those produced by self-folding) and has mechanical resistance to repetitive folding deformation due to the local torsional deformation of the meander structure. To verify the method, the large curvature self-folding of thick metal layers and their mechanical resistance to repetitive folding deformation is experimentally demonstrated. In addition, an origami/kirigami hybrid stretchable electronic device with light-emitting diodes (LEDs) is fabricated using a double-tiling structure called the perforated extruded Miura-ori.
Collapse
|
35
|
Integration of multiple electronic components on a microfibre towards an emerging electronic textile platform. Nat Commun 2022; 13:3173. [PMID: 35676280 PMCID: PMC9178034 DOI: 10.1038/s41467-022-30894-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 05/23/2022] [Indexed: 11/09/2022] Open
Abstract
Electronic fibres have been considered one of the desired device platforms due to their dimensional compatibility with fabrics by weaving with yarns. However, a precise connecting process between each electronic fibre is essential to configure the desired electronic circuits or systems. Here, we present an integrated electronic fibre platform by fabricating electronic devices onto a one-dimensional microfibre substrate. Electronic components such as transistors, inverters, ring oscillators, and thermocouples are integrated together onto the outer surface of a fibre substrate with precise semiconductor and electrode patterns. Our results show that electronic components can be integrated on a single fibre with reliable operation. We evaluate the electronic properties of the chip on the fibre as a multifunctional electronic textile platform by testing their switching and data processing, as well as sensing or transducing units for detecting optical/thermal signals. The demonstration of the electronic fibre suggests significant proof of concepts for the realization of high performance with wearable electronic textile systems. Towards further integration and miniaturization of e-textiles, in this work, authors demonstrate an integrated electronic fibre platform by fabricating multiple electronic components such as transistors, inverters, ring oscillators, and thermocouples onto the outer surface of a microfibre substrate.
Collapse
|
36
|
Stretchable, Multi-Layered Stack Antenna for Smart/Wearable Electronic Applications. MATERIALS 2022; 15:ma15093275. [PMID: 35591608 PMCID: PMC9105753 DOI: 10.3390/ma15093275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 04/27/2022] [Accepted: 05/02/2022] [Indexed: 12/10/2022]
Abstract
The development of microelectronics has been achieved by improving its performance through miniaturization. This was possible through the development of silicon-based semiconductor process technology, but recently, the demand for wearable or flexible devices has increased. These devices are made using various functional elements based on materials that are difficult to utilize with semiconductor devices that contain existing hard silicon-based materials and are bent or flexibly stretched. In this study, wireless antennas suitable for wearable devices were implemented in a stretchable form. It was possible to stably receive a wireless signal, even with a strain of 20% or more, and power light-emitting diodes (LEDs), microheaters, etc. By devising a multi-layered stack antenna without the existing semiconductor process, it was possible to improve the antenna’s reception performance. It is expected that this can be applied in various ways to smart wireless sensors and wearable biomedical devices using the near-field communication (NFC) of smartphones.
Collapse
|
37
|
Cho J, Shin G. Fabrication of a Flexible, Wireless Micro-Heater on Elastomer for Wearable Gas Sensor Applications. Polymers (Basel) 2022; 14:polym14081557. [PMID: 35458311 PMCID: PMC9024803 DOI: 10.3390/polym14081557] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/07/2022] [Accepted: 04/08/2022] [Indexed: 12/10/2022] Open
Abstract
Thin-film microdevices can be applied to various wearable devices due to their high flexibility compared to conventional bulk-type electronic devices. Among the various microdevice types, many IoT-based sensor devices have been developed recently. In the case of such sensor elements, it is important to control the surrounding environment to optimize the sensing characteristics. Among these environmental factors, temperature often has a great influence. There are cases where temperature significantly affects the sensor characteristics, as is the case for gas sensors. For this purpose, the development of thin-film-type micro-heaters is important. For this study, a wirelessly driven thin-film micro-heater was fabricated on the flexible and stretchable elastomer, a polydimethylsiloxane (PDMS); the antenna was optimized; and the heater was driven at the temperature up to 102 degrees Celsius. The effect of its use on gas-sensing characteristics was compared through the application of the proposed micro-heater to a gas sensor. The heated SnO2 nanowire gas sensor improved the performance of detecting carbon monoxide (CO) by more than 20%, and the recovery time was reduced to less than half. It is expected that thin-film-type micro-heaters that can be operated wirelessly are suitable for application in various wearable devices, including those for smart sensors and health monitoring.
Collapse
|
38
|
Wang S, Nie Y, Zhu H, Xu Y, Cao S, Zhang J, Li Y, Wang J, Ning X, Kong D. Intrinsically stretchable electronics with ultrahigh deformability to monitor dynamically moving organs. SCIENCE ADVANCES 2022; 8:eabl5511. [PMID: 35353566 PMCID: PMC8967218 DOI: 10.1126/sciadv.abl5511] [Citation(s) in RCA: 67] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Intrinsically stretchable electronics represent an attractive platform for next-generation implantable devices by reducing the mechanical mismatch and the immune responses with biological tissues. Despite extensive efforts, soft implantable electronic devices often exhibit an obvious trade-off between electronic performances and mechanical deformability because of limitations of commonly used compliant electronic materials. Here, we introduce a scalable approach to create intrinsically stretchable and implantable electronic devices featuring the deployment of liquid metal components for ultrahigh stretchability up to 400% tensile strain and excellent durability against repetitive deformations. The device architecture further shows long-term stability under physiological conditions, conformal attachments to internal organs, and low interfacial impedance. Successful electrophysiological mapping on rapidly beating hearts demonstrates the potential of intrinsically stretchable electronics for widespread applications in health monitoring, disease diagnosis, and medical therapies.
Collapse
Affiliation(s)
- Shaolei Wang
- College of Engineering and Applied Sciences and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210046, China
- State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University, Nanjing 210046, China
| | - Yuanyuan Nie
- College of Engineering and Applied Sciences and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210046, China
- National Laboratory of Solid State Microstructure, Collaborative Innovation Center of Advanced Microstructures, and Chemistry and Biomedicine Innovation Center, Nanjing University, Nanjing 210093, China
| | - Hangyu Zhu
- College of Engineering and Applied Sciences and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210046, China
- State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University, Nanjing 210046, China
| | - Yurui Xu
- College of Engineering and Applied Sciences and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210046, China
- National Laboratory of Solid State Microstructure, Collaborative Innovation Center of Advanced Microstructures, and Chemistry and Biomedicine Innovation Center, Nanjing University, Nanjing 210093, China
| | - Shitai Cao
- College of Engineering and Applied Sciences and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210046, China
- State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University, Nanjing 210046, China
| | - Jiaxue Zhang
- College of Engineering and Applied Sciences and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210046, China
- State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University, Nanjing 210046, China
| | - Yanyan Li
- College of Engineering and Applied Sciences and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210046, China
- State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University, Nanjing 210046, China
| | - Jianhui Wang
- College of Engineering and Applied Sciences and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210046, China
- State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University, Nanjing 210046, China
| | - Xinghai Ning
- College of Engineering and Applied Sciences and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210046, China
- National Laboratory of Solid State Microstructure, Collaborative Innovation Center of Advanced Microstructures, and Chemistry and Biomedicine Innovation Center, Nanjing University, Nanjing 210093, China
- Corresponding author. (D.K.); (X.N.)
| | - Desheng Kong
- College of Engineering and Applied Sciences and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210046, China
- State Key Laboratory of Analytical Chemistry for Life Science, Nanjing University, Nanjing 210046, China
- Corresponding author. (D.K.); (X.N.)
| |
Collapse
|
39
|
Song H, Luo G, Ji Z, Bo R, Xue Z, Yan D, Zhang F, Bai K, Liu J, Cheng X, Pang W, Shen Z, Zhang Y. Highly-integrated, miniaturized, stretchable electronic systems based on stacked multilayer network materials. SCIENCE ADVANCES 2022; 8:eabm3785. [PMID: 35294232 PMCID: PMC8926335 DOI: 10.1126/sciadv.abm3785] [Citation(s) in RCA: 57] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Elastic stretchability and function density represent two key figures of merits for stretchable inorganic electronics. Various design strategies have been reported to provide both high levels of stretchability and function density, but the function densities are mostly below 80%. While the stacked device layout can overcome this limitation, the soft elastomers used in previous studies could highly restrict the deformation of stretchable interconnects. Here, we introduce stacked multilayer network materials as a general platform to incorporate individual components and stretchable interconnects, without posing any essential constraint to their deformations. Quantitative analyses show a substantial enhancement (e.g., by ~7.5 times) of elastic stretchability of serpentine interconnects as compared to that based on stacked soft elastomers. The proposed strategy allows demonstration of a miniaturized electronic system (11 mm by 10 mm), with a moderate elastic stretchability (~20%) and an unprecedented areal coverage (~110%), which can serve as compass display, somatosensory mouse, and physiological-signal monitor.
Collapse
Affiliation(s)
- Honglie Song
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P. R. China
- Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, P. R. China
| | - Guoquan Luo
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P. R. China
- Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, P. R. China
- National Key Laboratory of Science and Technology on Advanced Composite in Special Environments, Harbin Institute of Technology, Harbin 150080, P. R. China
| | - Ziyao Ji
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P. R. China
- Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, P. R. China
| | - Renheng Bo
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P. R. China
- Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, P. R. China
| | - Zhaoguo Xue
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P. R. China
- Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, P. R. China
| | - Dongjia Yan
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P. R. China
- Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, P. R. China
| | - Fan Zhang
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P. R. China
- Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, P. R. China
| | - Ke Bai
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P. R. China
- Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, P. R. China
| | - Jianxing Liu
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P. R. China
- Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, P. R. China
| | - Xu Cheng
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P. R. China
- Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, P. R. China
| | - Wenbo Pang
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P. R. China
- Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, P. R. China
| | - Zhangming Shen
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P. R. China
- Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, P. R. China
| | - Yihui Zhang
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, P. R. China
- Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, P. R. China
- Corresponding author.
| |
Collapse
|
40
|
Park K, Choi H, Kang K, Shin M, Son D. Soft Stretchable Conductive Carboxymethylcellulose Hydrogels for Wearable Sensors. Gels 2022; 8:92. [PMID: 35200473 PMCID: PMC8871095 DOI: 10.3390/gels8020092] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/31/2022] [Accepted: 02/02/2022] [Indexed: 12/14/2022] Open
Abstract
Hydrogels that have a capability to provide mechanical modulus matching between time-dynamic curvilinear tissues and bioelectronic devices have been considered tissue-interfacing ionic materials for stably sensing physiological signals and delivering feedback actuation in skin-inspired healthcare systems. These functionalities are totally different from those of elastomers with low ionic conductivity and higher stiffness. Despite such remarkable progress, their low conductivity remains limited in transporting electrical charges to internal or external terminals without undesired information loss, potentially leading to an unstable biotic-abiotic interfaces in the wearable electronics. Here, we report a soft stretchable conductive hydrogel composite consisting of alginate, carboxymethyl cellulose, polyacrylamide, and silver flakes. This composite was fabricated via sol-gel transition. In particular, the phase stability and low dynamic modulus rates of the conductive hydrogel were confirmed through an oscillatory rheological characterization. In addition, our conductive hydrogel showed maximal tensile strain (≈400%), a low deformations of cyclic loading (over 100 times), low resistance (≈8.4 Ω), and a high gauge factor (≈241). These stable electrical and mechanical properties allowed our composite hydrogel to fully support the operation of a light-emitting diode demonstration under mechanical deformation. Based on such durable performance, we successfully measured the electromyogram signals without electrical malfunction even in various motions.
Collapse
Affiliation(s)
- Kyuha Park
- Department of Electrical and Computer Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Korea; (K.P.); (H.C.); (K.K.)
| | - Heewon Choi
- Department of Electrical and Computer Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Korea; (K.P.); (H.C.); (K.K.)
| | - Kyumin Kang
- Department of Electrical and Computer Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Korea; (K.P.); (H.C.); (K.K.)
| | - Mikyung Shin
- Department of Biomedical Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Korea
- Department of Intelligent Precision Healthcare Convergence, Sungkyunkwan University (SKKU), Suwon 16419, Korea
| | - Donghee Son
- Department of Electrical and Computer Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Korea; (K.P.); (H.C.); (K.K.)
- Department of Superintelligence Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Korea
| |
Collapse
|
41
|
Kim N, Kim J, Seo J, Hong C, Lee J. Stretchable Inorganic LED Displays with Double-Layer Modular Design for High Fill Factor. ACS APPLIED MATERIALS & INTERFACES 2022; 14:4344-4351. [PMID: 35029968 DOI: 10.1021/acsami.1c23160] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The recent commercial success of flexible and foldable displays has resulted in growing interest in stretchable electronics which are considered to be the next generation of the optoelectronic technology. Stretchable display technologies are being intensively studied for versatile applications including wearable, attachable, and shape changeable electronics. In this paper, we present high fill factor, stretchable inorganic light-emitting diode (LED) displays fabricated by connecting mini-LEDs and stretchable interconnects in a double-layer modular design. The double-layer modular design enables an increased areal coverage of LEDs and stretchable interconnectors with both electrical and mechanical stability. The main features of the double-layer modular design, fabrication processes, and device characteristics for the high fill factor, stretchable inorganic LED display are discussed, with experimental and computational results. Demonstrations of a passive matrix LED display confirm the potential value of the multi-layer structured, stretchable electronics in a wide range of applications that need high fill factor with high stretchability.
Collapse
Affiliation(s)
- Namyun Kim
- School of Mechanical Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Juho Kim
- School of Mechanical Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Jimin Seo
- School of Mechanical Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Changeui Hong
- School of Mechanical Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Jongho Lee
- School of Mechanical Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| |
Collapse
|
42
|
Cho YH, Park YG, Kim S, Park JU. 3D Electrodes for Bioelectronics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2005805. [PMID: 34013548 DOI: 10.1002/adma.202005805] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 10/04/2020] [Indexed: 05/08/2023]
Abstract
In recent studies related to bioelectronics, significant efforts have been made to form 3D electrodes to increase the effective surface area or to optimize the transfer of signals at tissue-electrode interfaces. Although bioelectronic devices with 2D and flat electrode structures have been used extensively for monitoring biological signals, these 2D planar electrodes have made it difficult to form biocompatible and uniform interfaces with nonplanar and soft biological systems (at the cellular or tissue levels). Especially, recent biomedical applications have been expanding rapidly toward 3D organoids and the deep tissues of living animals, and 3D bioelectrodes are getting significant attention because they can reach the deep regions of various 3D tissues. An overview of recent studies on 3D bioelectronic devices, such as the use of electrical stimulations and the recording of neural signals from biological subjects, is presented. Subsequently, the recent developments in materials and fabrication processing to 3D micro- and nanostructures are introduced, followed by broad applications of these 3D bioelectronic devices at various in vitro and in vivo conditions.
Collapse
Affiliation(s)
- Yo Han Cho
- Nano Science Technology Institute, Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul, 03722, Republic of Korea
- Graduate Program of Nano Biomedical Engineering (NanoBME), Advanced Science Institute, Yonsei University, Seoul, 03722, Republic of Korea
| | - Young-Geun Park
- Nano Science Technology Institute, Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul, 03722, Republic of Korea
- Graduate Program of Nano Biomedical Engineering (NanoBME), Advanced Science Institute, Yonsei University, Seoul, 03722, Republic of Korea
| | - Sumin Kim
- Nano Science Technology Institute, Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul, 03722, Republic of Korea
- Graduate Program of Nano Biomedical Engineering (NanoBME), Advanced Science Institute, Yonsei University, Seoul, 03722, Republic of Korea
| | - Jang-Ung Park
- Nano Science Technology Institute, Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul, 03722, Republic of Korea
- Graduate Program of Nano Biomedical Engineering (NanoBME), Advanced Science Institute, Yonsei University, Seoul, 03722, Republic of Korea
| |
Collapse
|
43
|
Min T, Cheong E, Lee C, Park D, Kim B, Rodrigue H, Koh JS, Lee D. Print-and-Spray Electromechanical Metamaterials. Soft Robot 2021; 9:882-888. [PMID: 34704849 DOI: 10.1089/soro.2021.0070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Many types of novel stretchable and conductive materials have been developed, but all exhibit a large increase in resistance upon stretching. In this article, the design and fabrication methods of two types of electromechanical metamaterials are presented, where the first has an invariant electrical resistance and the second has a decreasing electrical resistance upon elongation. The metamaterials can be fabricated by a few rapid and simple steps: a flexible polymer part is three-dimensional printed and sprayed with a conductive coating. Parametric optimization of the geometrical dimensions of the resistance invariant structure yielded a metamaterial with a nearly constant electrical resistance up to ∼1100% of tensile strain, whose behavior could be predicted using the finite element method. The second metamaterial had a resistance that reduced by as much as 38% over a displacement of 600 μm. The design principles of these new types of metamaterials can open new possibilities for high-performance soft robots and flexible electronics.
Collapse
Affiliation(s)
- Taeho Min
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, Republic of Korea
| | - Euimin Cheong
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, Republic of Korea
| | - Changryeol Lee
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, Republic of Korea
| | - Donghyun Park
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, Republic of Korea
| | - Baekgyeom Kim
- Department of Mechanical Engineering, Ajou University, Suwon, Republic of Korea
| | - Hugo Rodrigue
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, Republic of Korea
| | - Je-Sung Koh
- Department of Mechanical Engineering, Ajou University, Suwon, Republic of Korea
| | - Dongwoo Lee
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, Republic of Korea
| |
Collapse
|
44
|
Li X, Li X, Lu Y, Shang C, Ding X, Zhang J, Feng Y, Xu FJ. Wearable, Washable, and Highly Sensitive Piezoresistive Pressure Sensor Based on a 3D Sponge Network for Real-Time Monitoring Human Body Activities. ACS APPLIED MATERIALS & INTERFACES 2021; 13:46848-46857. [PMID: 34553599 DOI: 10.1021/acsami.1c09975] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Wearable pressure sensors are highly desirable for monitoring human health and realizing a nice human-machine interaction. Herein, a chitosan/MXene/polyurethane-sponge/polyvinyl alcohol (CS/MXene/PU sponge/PVA)-based 3D pressure sensor is developed to simultaneously achieve wearability, washability, and high sensitivity in a wide region. In the force-sensitive layer of the sensor, MXene and CS are fully attached to the PU sponge to ensure that the composite sponge has remarkable conductivity and washability. Benefiting from the highly resistive PVA-nanowire spacer, the initial current of the sensor is reduced significantly so that the sensor exhibits extremely high sensitivity (84.9 kPa-1 for the less than 5 kPa region and 140.6 kPa-1 for the 5-22 kPa region). Moreover, the sensor has an excellent fast response time of 200 ms and a short recovery time of 30 ms, as well as non-attenuating durability over 5000 cycles. With the high sensitivity in a wide range, the sensor is capable of detecting multiple human and animal activities in real time, ranging from the large pressure of joint activities to a subtle pressure of pulse. Furthermore, the sensor also demonstrates the potential application in measuring pressure distribution. Overall, such a multifunctional pressure sensor can supply a new platform for the design and development of wearable health-monitoring equipment and an efficient human-machine interface.
Collapse
Affiliation(s)
- Xiaodi Li
- College of Mathematics and Physics, Beijing University of Chemical Technology, Beijing 100029, China
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xu Li
- College of Mathematics and Physics, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yong Lu
- College of Mathematics and Physics, Beijing University of Chemical Technology, Beijing 100029, China
| | - Chengshuo Shang
- Laboratory of Biomedical Materials and Key Lab of Biomedical Materials of Natural Macromolecules (Ministry of Education), Beijing University of Chemical Technology, Beijing 100029, China
| | - Xiaokang Ding
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Laboratory of Biomedical Materials and Key Lab of Biomedical Materials of Natural Macromolecules (Ministry of Education), Beijing University of Chemical Technology, Beijing 100029, China
| | - Jicai Zhang
- College of Mathematics and Physics, Beijing University of Chemical Technology, Beijing 100029, China
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Laboratory of Biomedical Materials and Key Lab of Biomedical Materials of Natural Macromolecules (Ministry of Education), Beijing University of Chemical Technology, Beijing 100029, China
| | - Yongjun Feng
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Fu-Jian Xu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Laboratory of Biomedical Materials and Key Lab of Biomedical Materials of Natural Macromolecules (Ministry of Education), Beijing University of Chemical Technology, Beijing 100029, China
| |
Collapse
|
45
|
Dauzon E, Sallenave X, Plesse C, Goubard F, Amassian A, Anthopoulos TD. Pushing the Limits of Flexibility and Stretchability of Solar Cells: A Review. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2101469. [PMID: 34297433 DOI: 10.1002/adma.202101469] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 04/25/2021] [Indexed: 06/13/2023]
Abstract
Emerging forms of soft, flexible, and stretchable electronics promise to revolutionize the electronics industries of the future offering radically new products that combine multiple functionalities, including power generation, with arbitrary form factor. For example, skin-like electronics promise to transform the human-machine-interface, but the softness of the skin is incompatible with traditional electronic components. To address this issue, new strategies toward soft and wearable electronic systems are currently being pursued, which also include stretchable photovoltaics as self-powering systems for use in autonomous and stretchable electronics of the future. Here recent developments in the field of stretchable photovoltaics are reviewed and their potential for various emerging applications are examined. Emphasis is placed on the different strategies to induce stretchability including extrinsic and intrinsic approaches. In the former case, engineering and patterning of the materials and devices are key elements while intrinsically stretchable systems rely on mechanically compliant materials such as elastomers and organic conjugated polymers. The result is a review article that provides a comprehensive summary of the progress to date in the field of stretchable solar cells from the nanoscale to macroscopic functional devices. The article is concluded by discussing the emerging trends and future developments.
Collapse
Affiliation(s)
- Emilie Dauzon
- King Abdullah University of Science and Technology (KAUST), KAUST Solar Centre (KSC), Physical Science and Engineering Division, Thuwal, 23955-6900, Saudi Arabia
| | | | - Cedric Plesse
- LPPI, CY Cergy Paris Université, Cergy, 95000, France
| | | | - Aram Amassian
- Department of Materials Science and Engineering, and Organic and Carbon Electronic Laboratories (ORaCEL), North Carolina State University, Raleigh, NC, 27695, USA
| | - Thomas D Anthopoulos
- King Abdullah University of Science and Technology (KAUST), KAUST Solar Centre (KSC), Physical Science and Engineering Division, Thuwal, 23955-6900, Saudi Arabia
| |
Collapse
|
46
|
Shim HJ, Sunwoo S, Kim Y, Koo JH, Kim D. Functionalized Elastomers for Intrinsically Soft and Biointegrated Electronics. Adv Healthc Mater 2021; 10:e2002105. [PMID: 33506654 DOI: 10.1002/adhm.202002105] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/31/2020] [Indexed: 12/11/2022]
Abstract
Elastomers are suitable materials for constructing a conformal interface with soft and curvilinear biological tissue due to their intrinsically deformable mechanical properties. Intrinsically soft electronic devices whose mechanical properties are comparable to human tissue can be fabricated using suitably functionalized elastomers. This article reviews recent progress in functionalized elastomers and their application to intrinsically soft and biointegrated electronics. Elastomers can be functionalized by adding appropriate fillers, either nanoscale materials or polymers. Conducting or semiconducting elastomers synthesized and/or processed with these materials can be applied to the fabrication of soft biointegrated electronic devices. For facile integration of soft electronics with the human body, additional functionalization strategies can be employed to improve adhesive or autonomous healing properties. Recently, device components for intrinsically soft and biointegrated electronics, including sensors, stimulators, power supply devices, displays, and transistors, have been developed. Herein, representative examples of these fully elastomeric device components are discussed. Finally, the remaining challenges and future outlooks for the field are presented.
Collapse
Affiliation(s)
- Hyung Joon Shim
- Center for Nanoparticle Research Institute for Basic Science (IBS) Seoul 08826 Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University Seoul 08826 Republic of Korea
| | - Sung‐Hyuk Sunwoo
- Center for Nanoparticle Research Institute for Basic Science (IBS) Seoul 08826 Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University Seoul 08826 Republic of Korea
| | - Yeongjun Kim
- Center for Nanoparticle Research Institute for Basic Science (IBS) Seoul 08826 Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University Seoul 08826 Republic of Korea
| | - Ja Hoon Koo
- Center for Nanoparticle Research Institute for Basic Science (IBS) Seoul 08826 Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University Seoul 08826 Republic of Korea
| | - Dae‐Hyeong Kim
- Center for Nanoparticle Research Institute for Basic Science (IBS) Seoul 08826 Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University Seoul 08826 Republic of Korea
- Department of Materials Science and Engineering Seoul National University Seoul 08826 Republic of Korea
| |
Collapse
|
47
|
Liu D, Mun J, Chen G, Schuster NJ, Wang W, Zheng Y, Nikzad S, Lai JC, Wu Y, Zhong D, Lin Y, Lei Y, Chen Y, Gam S, Chung JW, Yun Y, Tok JBH, Bao Z. A Design Strategy for Intrinsically Stretchable High-Performance Polymer Semiconductors: Incorporating Conjugated Rigid Fused-Rings with Bulky Side Groups. J Am Chem Soc 2021; 143:11679-11689. [PMID: 34284578 DOI: 10.1021/jacs.1c04984] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Strategies to improve stretchability of polymer semiconductors, such as introducing flexible conjugation-breakers or adding flexible blocks, usually result in degraded electrical properties. In this work, we propose a concept to address this limitation, by introducing conjugated rigid fused-rings with optimized bulky side groups and maintaining a conjugated polymer backbone. Specifically, we investigated two classes of rigid fused-ring systems, namely, benzene-substituted dibenzothiopheno[6,5-b:6',5'-f]thieno[3,2-b]thiophene (Ph-DBTTT) and indacenodithiophene (IDT) systems, and identified molecules displaying optimized electrical and mechanical properties. In the IDT system, the polymer PIDT-3T-OC12-10% showed promising electrical and mechanical properties. In fully stretchable transistors, the polymer PIDT-3T-OC12-10% showed a mobility of 0.27 cm2 V-1 s-1 at 75% strain and maintained its mobility after being subjected to hundreds of stretching-releasing cycles at 25% strain. Our results underscore the intimate correlation between chemical structures, mechanical properties, and charge carrier mobility for polymer semiconductors. Our described molecular design approach will help to expedite the next generation of intrinsically stretchable high-performance polymer semiconductors.
Collapse
Affiliation(s)
- Deyu Liu
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - Jaewan Mun
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - Gan Chen
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
| | - Nathaniel J Schuster
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - Weichen Wang
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
| | - Yu Zheng
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - Shayla Nikzad
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - Jian-Cheng Lai
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - Yilei Wu
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - Donglai Zhong
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - Yangju Lin
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - Yusheng Lei
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - Yuelang Chen
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - Sangah Gam
- Samsung Advanced Institute of Technology, Samsung Electronics, Suwon 16678, South Korea
| | - Jong Won Chung
- Samsung Advanced Institute of Technology, Samsung Electronics, Suwon 16678, South Korea
| | - Youngjun Yun
- Samsung Advanced Institute of Technology, Samsung Electronics, Suwon 16678, South Korea
| | - Jeffrey B-H Tok
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - Zhenan Bao
- Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| |
Collapse
|
48
|
Oh HS, Lee CH, Kim NK, An T, Kim GH. Review: Sensors for Biosignal/Health Monitoring in Electronic Skin. Polymers (Basel) 2021; 13:2478. [PMID: 34372081 PMCID: PMC8347500 DOI: 10.3390/polym13152478] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/20/2021] [Accepted: 07/21/2021] [Indexed: 11/16/2022] Open
Abstract
Skin is the largest sensory organ and receives information from external stimuli. Human body signals have been monitored using wearable devices, which are gradually being replaced by electronic skin (E-skin). We assessed the basic technologies from two points of view: sensing mechanism and material. Firstly, E-skins were fabricated using a tactile sensor. Secondly, E-skin sensors were composed of an active component performing actual functions and a flexible component that served as a substrate. Based on the above fabrication processes, the technologies that need more development were introduced. All of these techniques, which achieve high performance in different ways, are covered briefly in this paper. We expect that patients' quality of life can be improved by the application of E-skin devices, which represent an applied advanced technology for real-time bio- and health signal monitoring. The advanced E-skins are convenient and suitable to be applied in the fields of medicine, military and environmental monitoring.
Collapse
Affiliation(s)
- Hyeon Seok Oh
- School of Mechanical Engineering, Chungbuk National University (CBNU), 1, Chungdae-ro, Seowon-gu, Cheongju-si 28644, Chungcheongbuk-do, Korea; (H.S.O.); (C.H.L.); (N.K.K.)
| | - Chung Hyeon Lee
- School of Mechanical Engineering, Chungbuk National University (CBNU), 1, Chungdae-ro, Seowon-gu, Cheongju-si 28644, Chungcheongbuk-do, Korea; (H.S.O.); (C.H.L.); (N.K.K.)
| | - Na Kyoung Kim
- School of Mechanical Engineering, Chungbuk National University (CBNU), 1, Chungdae-ro, Seowon-gu, Cheongju-si 28644, Chungcheongbuk-do, Korea; (H.S.O.); (C.H.L.); (N.K.K.)
| | - Taechang An
- Department of Mechanical & Robotics Engineering, Andong National University (ANU), 1375, Gyeong-dong-ro, Andong-si 36729, Gyeongsangbuk-do, Korea;
| | - Geon Hwee Kim
- School of Mechanical Engineering, Chungbuk National University (CBNU), 1, Chungdae-ro, Seowon-gu, Cheongju-si 28644, Chungcheongbuk-do, Korea; (H.S.O.); (C.H.L.); (N.K.K.)
| |
Collapse
|
49
|
Yang F, Li J, Long Y, Zhang Z, Wang L, Sui J, Dong Y, Wang Y, Taylor R, Ni D, Cai W, Wang P, Hacker T, Wang X. Wafer-scale heterostructured piezoelectric bio-organic thin films. Science 2021; 373:337-342. [PMID: 34437153 PMCID: PMC8516594 DOI: 10.1126/science.abf2155] [Citation(s) in RCA: 87] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 05/26/2021] [Indexed: 01/12/2023]
Abstract
Piezoelectric biomaterials are intrinsically suitable for coupling mechanical and electrical energy in biological systems to achieve in vivo real-time sensing, actuation, and electricity generation. However, the inability to synthesize and align the piezoelectric phase at a large scale remains a roadblock toward practical applications. We present a wafer-scale approach to creating piezoelectric biomaterial thin films based on γ-glycine crystals. The thin film has a sandwich structure, where a crystalline glycine layer self-assembles and automatically aligns between two polyvinyl alcohol (PVA) thin films. The heterostructured glycine-PVA films exhibit piezoelectric coefficients of 5.3 picocoulombs per newton or 157.5 × 10-3 volt meters per newton and nearly an order of magnitude enhancement of the mechanical flexibility compared with pure glycine crystals. With its natural compatibility and degradability in physiological environments, glycine-PVA films may enable the development of transient implantable electromechanical devices.
Collapse
Affiliation(s)
- Fan Yang
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
- School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
- Key Laboratory of High-speed Railway Engineering, Ministry of Education, Chengdu 610031, China
| | - Jun Li
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Yin Long
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Ziyi Zhang
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Linfeng Wang
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Jiajie Sui
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Yutao Dong
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Yizhan Wang
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Rachel Taylor
- Cardiovascular Research Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Dalong Ni
- Department of Radiology and Medical Physics, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Weibo Cai
- Department of Radiology and Medical Physics, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Ping Wang
- School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
- Key Laboratory of High-speed Railway Engineering, Ministry of Education, Chengdu 610031, China
| | - Timothy Hacker
- Cardiovascular Research Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Xudong Wang
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA.
| |
Collapse
|
50
|
Kim DW, Kwon J, Kim HS, Jeong U. Printed Stretchable Single-Nanofiber Interconnections for Individually-Addressable Highly-Integrated Transparent Stretchable Field Effect Transistor Array. NANO LETTERS 2021; 21:5819-5827. [PMID: 34189918 DOI: 10.1021/acs.nanolett.1c01744] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Stretchable electronics have been spotlighted as promising next-generation electronics. In order to drive a specific unit device in an integrated stretchable device, the interconnection of the device should be placed in a desired position and addressed individually. In addition, practical stretchable interconnection requires reliable stretchability, high conductivity, optical transparency, high resolution, and fast and large-scale production. This study proposes an approach to meet these requirements. We print the single wavy polymer nanofibers (NFs) in a desired position and convert them into metal NF interconnections. The nanoscale diameter and the wavy cylindrical shape of the metal NFs are the main reasons for the reliable stretchability and the excellent transparency. Using the stretchable metal NFs and the stretchable organic semiconductor NFs, an array of all-stretchable transparent NF-field effect transistors (NF-FETs) is demonstrated. The highly integrated NF-FET array (10 FETs/mm2) shows uniform performance and good stability under repeated severe mechanical deformations.
Collapse
Affiliation(s)
- Dong Wook Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Jihye Kwon
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Hyoung Seop Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Unyong Jeong
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk 37673, Republic of Korea
| |
Collapse
|