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Wang W, Harimurti S, Inoue D, Nayeem MOG, Wang J, Okuda C, Hashizume D, Lee S, Fukuda K, Yokota T, Someya T. Janus Membrane-Based Wearable pH Sensor with Sweat Absorption, Gas Permeability, and Self-Adhesiveness. ACS APPLIED MATERIALS & INTERFACES 2024; 16:27065-27074. [PMID: 38748094 DOI: 10.1021/acsami.4c02189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
Wearable biomedical sensors have enabled noninvasive and continuous physiological monitoring for daily health management and early detection of chronic diseases. Among biomedical sensors, wearable pH sensors attracted significant interest, as pH influences most biological reactions. However, conformable pH sensors that have sweat absorption ability, are self-adhesive to the skin, and are gas permeable remain largely unexplored. In this study, we present a pioneering approach to this problem by developing a Janus membrane-based pH sensor with self-adhesiveness on the skin. The sensor is composed of a hydrophobic polyurethane-polydimethylsiloxane porous hundreds nanometer-thick substrate and a hydrophilic poly(vinyl alcohol)-poly(acrylic acid) porous nanofiber layer. This Janus membrane exhibits a thickness of around 10 μm, providing a conformable adhesion to the skin. The simultaneous realization of solution absorption, gas permeability, and self-adhesiveness makes it suitable for long-term continuous monitoring without compromising the comfort of the wearer. The pH sensor was tested successfully for continuous monitoring for 7.5 h, demonstrating its potential for stable analysis of skin health conditions. The Janus membrane-based pH sensor holds significant promise for comprehensive skin health monitoring and wearable biomedical applications.
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Affiliation(s)
- Wenqing Wang
- Department of Electrical Engineering and Information Systems, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Thin-Film Device Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Suksmandhira Harimurti
- Department of Electrical Engineering and Information Systems, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Daishi Inoue
- Thin-Film Device Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Md Osman Goni Nayeem
- Department of Electrical Engineering and Information Systems, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Jiachen Wang
- Department of Electrical Engineering and Information Systems, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Thin-Film Device Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Chika Okuda
- Department of Electrical Engineering and Information Systems, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Daisuke Hashizume
- Thin-Film Device Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Sunghoon Lee
- Department of Electrical Engineering and Information Systems, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Thin-Film Device Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Kenjiro Fukuda
- Thin-Film Device Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Tomoyuki Yokota
- Department of Electrical Engineering and Information Systems, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Institute of Engineering Innovation, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Takao Someya
- Department of Electrical Engineering and Information Systems, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Thin-Film Device Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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Ma X, Wu X, Luo W, Liu Z, Wang F, Yu H. Large-Scale Wearable Textile-Based Sweat Sensor with High Sensitivity, Rapid Response, and Stable Electrochemical Performance. ACS APPLIED MATERIALS & INTERFACES 2024; 16:18202-18212. [PMID: 38551998 DOI: 10.1021/acsami.4c01521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
Textile-based sweat sensors display great potential to enhance wearable comfort and health monitoring; however, their widespread application is severely hindered by the intricate manufacturing process and electrochemical characteristics. To address this challenge, we combined both impregnation coating technology and conjugated electrospinning technology to develop an electro-assisted impregnation core-spinning technology (EAICST), which enables us to simply construct a sheath-core electrochemical sensing yarn (TPFV/CPP yarn) via coating PEDOT:PSS-coated carbon fibers (CPP) with polyurethane (TPU)/polyacrylonitrile (PAN)/poloxamer (F127)/valinomycin as shell. The TPFV/CPP yarn was sewn into the fabric and integrated with a sensor to achieve a detachable feature and efficiently monitor K+ levels in sweat. By introducing EAICST, a speed of 10 m/h can be realized in the continuous preparation of the TPFV/CPP yarn, while the interconnected pores in the yarn sheath enable it to quickly capture and diffuse sweat. Besides, the sensor exhibited excellent sensitivity (54.26 mV/decade), fast response (1.7 s), anti-interference, and long-term stability (5000 s or more). Especially, it also possesses favorable washability and wear resistance properties. Taken together, this study provides a crucial technical foundation for the development of advanced wearable devices designed for sweat analysis.
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Affiliation(s)
- Xiangda Ma
- Guangdong-Hong Kong Joint Laboratory for Advanced Textile Materials, College of Textile Science and Engineering, Wuyi University, Jiangmen 529020, China
| | - Xueqi Wu
- Guangdong-Hong Kong Joint Laboratory for Advanced Textile Materials, College of Textile Science and Engineering, Wuyi University, Jiangmen 529020, China
| | - Wencan Luo
- Guangdong-Hong Kong Joint Laboratory for Advanced Textile Materials, College of Textile Science and Engineering, Wuyi University, Jiangmen 529020, China
- Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau 999078, China
| | - Zijin Liu
- Guangdong-Hong Kong Joint Laboratory for Advanced Textile Materials, College of Textile Science and Engineering, Wuyi University, Jiangmen 529020, China
| | - Fei Wang
- Guangdong-Hong Kong Joint Laboratory for Advanced Textile Materials, College of Textile Science and Engineering, Wuyi University, Jiangmen 529020, China
| | - Hui Yu
- Guangdong-Hong Kong Joint Laboratory for Advanced Textile Materials, College of Textile Science and Engineering, Wuyi University, Jiangmen 529020, China
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Li X, Dai B, Wang L, Yang X, Xu T, Zhang X. Radiative cooling and anisotropic wettability in E-textile for comfortable biofluid monitoring. Biosens Bioelectron 2023; 237:115434. [PMID: 37301178 DOI: 10.1016/j.bios.2023.115434] [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] [Received: 02/19/2023] [Revised: 04/20/2023] [Accepted: 05/25/2023] [Indexed: 06/12/2023]
Abstract
Long-term wearing comfort is essential for future advanced electronic textiles (e-textiles). Herein, we fabricate a skin-comfortable e-textile for long-term wearing experience on human epidermis. Such e-textile was simply fabricated through two different dip coating methods and single-side air plasma treatment, which couples radiative thermal and moisture management for biofluid monitoring. The silk-based substrate with improved optical properties and anisotropic wettability can provide a temperature drop of 1.4 °C under strong sunlight. Moreover, the anisotropic wettability of the e-textile can provide a dryer skin microenvironment by comparing with traditional fabric. The fiber electrodes weaving into the inner side of the substrate can noninvasively monitor multiple sweat biomarkers (i.e., pH, uric acid, and Na+). Such a synergistic strategy may pave a new path to design next-generation e-textiles with significantly improved comfort.
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Affiliation(s)
- Xiangnan Li
- School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, Guangdong, 518060, PR China
| | - Bing Dai
- School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, Guangdong, 518060, PR China
| | - Lirong Wang
- School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, Guangdong, 518060, PR China
| | - Xuejun Yang
- School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, Guangdong, 518060, PR China
| | - Tailin Xu
- School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, Guangdong, 518060, PR China.
| | - Xueji Zhang
- School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, Guangdong, 518060, PR China
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Song Y, Tang W, Han L, Liu Y, Shen C, Yin X, Ouyang B, Su Y, Guo X. Integration of nanomaterial sensing layers on printable organic field effect transistors for highly sensitive and stable biochemical signal conversion. NANOSCALE 2023; 15:5537-5559. [PMID: 36880412 DOI: 10.1039/d2nr05863d] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Organic field effect transistor (OFET) devices are one of the most popular candidates for the development of biochemical sensors due to their merits of being flexible and highly customizable for low-cost large-area manufacturing. This review describes the key points in constructing an extended-gate type OFET (EGOFET) biochemical sensor with high sensitivity and stability. The structure and working mechanism of OFET biochemical sensors are described firstly, emphasizing the importance of critical material and device engineering to higher biochemical sensing capabilities. Next, printable materials used to construct sensing electrodes (SEs) with high sensitivity and stability are presented with a focus on novel nanomaterials. Then, methods of obtaining printable OFET devices with steep subthreshold swing (SS) for high transconductance efficiency are introduced. Finally, approaches for the integration of OFETs and SEs to form portable biochemical sensor chips are introduced, followed by several demonstrations of sensory systems. This review will provide guidelines for optimizing the design and manufacturing of OFET biochemical sensors and accelerating the movement of OFET biochemical sensors from the laboratory to the marketplace.
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Affiliation(s)
- Yawen Song
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Wei Tang
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Lei Han
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Yan Liu
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Chaochao Shen
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Xiaokuan Yin
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Bang Ouyang
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Yuezeng Su
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Xiaojun Guo
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
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Chen L, Guo X, Sun X, Zhang S, Wu J, Yu H, Zhang T, Cheng W, Shi Y, Pan L. Porous Structural Microfluidic Device for Biomedical Diagnosis: A Review. MICROMACHINES 2023; 14:547. [PMID: 36984956 PMCID: PMC10051279 DOI: 10.3390/mi14030547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 02/21/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
Microfluidics has recently received more and more attention in applications such as biomedical, chemical and medicine. With the development of microelectronics technology as well as material science in recent years, microfluidic devices have made great progress. Porous structures as a discontinuous medium in which the special flow phenomena of fluids lead to their potential and special applications in microfluidics offer a unique way to develop completely new microfluidic chips. In this article, we firstly introduce the fabrication methods for porous structures of different materials. Then, the physical effects of microfluid flow in porous media and their related physical models are discussed. Finally, the state-of-the-art porous microfluidic chips and their applications in biomedicine are summarized, and we present the current problems and future directions in this field.
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Affiliation(s)
| | | | - Xidi Sun
- Correspondence: (X.S.); (Y.S.); (L.P.)
| | | | | | | | | | | | - Yi Shi
- Correspondence: (X.S.); (Y.S.); (L.P.)
| | - Lijia Pan
- Correspondence: (X.S.); (Y.S.); (L.P.)
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Yuan X, Li C, Yin X, Yang Y, Ji B, Niu Y, Ren L. Epidermal Wearable Biosensors for Monitoring Biomarkers of Chronic Disease in Sweat. BIOSENSORS 2023; 13:313. [PMID: 36979525 PMCID: PMC10045998 DOI: 10.3390/bios13030313] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 02/15/2023] [Accepted: 02/21/2023] [Indexed: 06/18/2023]
Abstract
Biological information detection technology is mainly used for the detection of physiological and biochemical parameters closely related to human tissues and organ lesions, such as biomarkers. This technology has important value in the clinical diagnosis and treatment of chronic diseases in their early stages. Wearable biosensors can be integrated with the Internet of Things and Big Data to realize the detection, transmission, storage, and comprehensive analysis of human physiological and biochemical information. This technology has extremely wide applications and considerable market prospects in frontier fields including personal health monitoring, chronic disease diagnosis and management, and home medical care. In this review, we systematically summarized the sweat biomarkers, introduced the sweat extraction and collection methods, and discussed the application and development of epidermal wearable biosensors for monitoring biomarkers in sweat in preclinical research in recent years. In addition, the current challenges and development prospects in this field were discussed.
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Affiliation(s)
- Xichen Yuan
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi’an 710072, China
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
- MOE Key Laboratory of Micro and Nano Systems for Aerospace, Northwestern Polytechnical University, Xi’an 710072, China
| | - Chen Li
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
- Key Laboratory of Flexible Electronics of Zhejiang, Ningbo Institute of Northwestern Polytechnical University, Ningbo 315103, China
| | - Xu Yin
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi’an 710072, China
| | - Yang Yang
- Ministry of Education Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Chongqing University, Chongqing 400030, China
| | - Bowen Ji
- Unmanned System Research Institute, Northwestern Polytechnical University, Xi’an 710072, China
| | - Yinbo Niu
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
| | - Li Ren
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
- Key Laboratory of Flexible Electronics of Zhejiang, Ningbo Institute of Northwestern Polytechnical University, Ningbo 315103, China
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Zhang Q, Li K, Li Y, Li Y, Zhang X, Du Y, Tian D. Gradient monolayered porous membrane for liquid manipulation: from fabrication to application. NANOSCALE ADVANCES 2022; 4:3495-3503. [PMID: 36134360 PMCID: PMC9400516 DOI: 10.1039/d2na00421f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 07/21/2022] [Indexed: 06/16/2023]
Abstract
The controlled transport of liquid on a smart material surface has important applications in the fields of microreactors, mass and heat transfer, water collection, microfluidic devices and so on. Porous membranes with special wettability have attracted extensive attention due to their unique unidirectional transport behavior, that is, liquid can easily penetrate in one direction while reverse transport is prevented, which shows great potential in functional textiles, fog collection, oil/water separation, sensors, etc. However, many porous membranes are synthesized from multilayer structural materials with poor mechanical properties and are currently prone to delamination, which limits their stability. While a monolayered porous membrane, especially for gradient structure, is an efficient, stable and durable material owing to its good durability and difficult stratification. Therefore, it is of great significance to fabricate a monolayered porous membrane for controllable liquid manipulation. In this minireview, we briefly introduce the classification and fabrication of typical monolayered porous membranes. And the applications of monolayered porous membranes in unidirectional penetration, selective separation and intelligent response are further emphasized and discussed. Finally, the controllable preparation and potential applications of porous membranes are featured and their prospects discussed on the basis of their current development.
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Affiliation(s)
- Qiuya Zhang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology, School of Chemistry, Beihang University Beijing 100191 P. R. China
- School of Physics, Beihang University Beijing 100191 P. R. China
| | - Ke Li
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology, School of Chemistry, Beihang University Beijing 100191 P. R. China
| | - Yuliang Li
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology, School of Chemistry, Beihang University Beijing 100191 P. R. China
| | - Yan Li
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology, School of Chemistry, Beihang University Beijing 100191 P. R. China
| | - Xiaofang Zhang
- School of Mathematics and Physics, University of Science & Technology Beijing Beijing 100083 P. R. China
| | - Yi Du
- School of Physics, Beihang University Beijing 100191 P. R. China
| | - Dongliang Tian
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology, School of Chemistry, Beihang University Beijing 100191 P. R. China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University Beijing 100191 P. R. China
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Wang X, Liu Y, Cheng H, Ouyang X. Surface Wettability for Skin-Interfaced Sensors and Devices. ADVANCED FUNCTIONAL MATERIALS 2022; 32:2200260. [PMID: 36176721 PMCID: PMC9514151 DOI: 10.1002/adfm.202200260] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Indexed: 05/05/2023]
Abstract
The practical applications of skin-interfaced sensors and devices in daily life hinge on the rational design of surface wettability to maintain device integrity and achieve improved sensing performance under complex hydrated conditions. Various bio-inspired strategies have been implemented to engineer desired surface wettability for varying hydrated conditions. Although the bodily fluids can negatively affect the device performance, they also provide a rich reservoir of health-relevant information and sustained energy for next-generation stretchable self-powered devices. As a result, the design and manipulation of the surface wettability are critical to effectively control the liquid behavior on the device surface for enhanced performance. The sensors and devices with engineered surface wettability can collect and analyze health biomarkers while being minimally affected by bodily fluids or ambient humid environments. The energy harvesters also benefit from surface wettability design to achieve enhanced performance for powering on-body electronics. In this review, we first summarize the commonly used approaches to tune the surface wettability for target applications toward stretchable self-powered devices. By considering the existing challenges, we also discuss the opportunities as a small fraction of potential future developments, which can lead to a new class of skin-interfaced devices for use in digital health and personalized medicine.
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Affiliation(s)
- Xiufeng Wang
- School of Materials Science and Engineering, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Yangchengyi Liu
- School of Materials Science and Engineering, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Huanyu Cheng
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802, USA
| | - Xiaoping Ouyang
- School of Materials Science and Engineering, Xiangtan University, Xiangtan, Hunan 411105, China
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