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Qian N, Hu J, Huang S, Liu Z, Wang M, Keller P, Yang H. Patterned Photonic Actuators with Dynamic Shape-Morphing and Color-Changing Capabilities Fabricated by Athermal Embossing Technology. Angew Chem Int Ed Engl 2024; 63:e202406534. [PMID: 38693606 DOI: 10.1002/anie.202406534] [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: 04/06/2024] [Revised: 04/28/2024] [Accepted: 05/01/2024] [Indexed: 05/03/2024]
Abstract
Stimuli-responsive patterned photonic actuators, characterized by their patterned nano/microscale structures and capacity to demonstrate synergistic color changes and shape morphing in response to external stimuli, have attracted intense scientific attention. However, traditional patterned photonic actuator systems still face limitations such as cumbersome and time-consuming preparation processes and small-scale deformations. Herein, we introduce a facile approach involving an athermal embossing technique to rapidly fabricate patterned photonic actuators based on near-infrared (NIR) light-responsive liquid crystal elastomers. The resulting patterned photonic actuators demonstrate remarkable features, including brilliant angle-dependent structural color, complex three-dimensional actuation, and good color durability under NIR light stimulation. As illustrative demonstrations of the proof-of-concept, we fabricate two light-fuelled patterned photonic soft actuators: a butterfly-inspired actuator that can produce wing-flapping dynamic changes in structural color, and an origami crane-shaped actuator with shape memory, structural color information storage, and dynamic display properties. This strategy provides distinct insights into the design and fabrication of various patterned photonic soft robotic devices and intelligent actuators.
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Affiliation(s)
- Nina Qian
- School of Chemistry and Chemical Engineering, State Key Laboratory of Digital Medical Engineering, Southeast University, Nanjing, Jiangsu Province, 211189, China
| | - Jun Hu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Digital Medical Engineering, Southeast University, Nanjing, Jiangsu Province, 211189, China
| | - Shuai Huang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Digital Medical Engineering, Southeast University, Nanjing, Jiangsu Province, 211189, China
| | - Zhiyang Liu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Digital Medical Engineering, Southeast University, Nanjing, Jiangsu Province, 211189, China
| | - Meng Wang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Digital Medical Engineering, Southeast University, Nanjing, Jiangsu Province, 211189, China
| | - Patrick Keller
- Institut Curie, Centre De Recherche, CNRS UMR 168, Université Pierre et Marie Curie, 26 rue d'Ulm, 75248, Paris Cedex 05, France
| | - Hong Yang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Digital Medical Engineering, Southeast University, Nanjing, Jiangsu Province, 211189, China
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2
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Shang H, Le X, Sun Y, Wu S, Wang Y, Théato P, Chen T. Water-sensitive fluorescent microgel inks to produce verifiable information for highly secured anti-counterfeiting. MATERIALS HORIZONS 2024; 11:2856-2864. [PMID: 38804229 DOI: 10.1039/d4mh00210e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
The decryption and verification of encrypted information via a simple and efficient method is always difficult and challenging in the field of information security. Herein, a series of water-sensitive fluorescent microgels are fabricated for highly secured anti-counterfeiting with authenticity identification. The initial negatively charged microgels (MG) are made up of N-isopropylacrylamide (NIPAM), acrylic acid (AAc) and anthracen-9-yl acrylate (9-ANA, blue fluorescent monomer). The prepared MGs can bind cationic fluorescent dyes such as 5-aminofluorescein (FITC, green fluorescent dye) and rhodamine B (Rh B, red fluorescent dye) via electrostatic interaction, emitting multi-fluorescent colors based on the fluorescence resonance energy transfer (FRET) process. Furthermore, the fluorescence colors of MG-derived systems can be rapidly changed by swelling in water, which can block the FRET process and change the aggregation state of dyes. With the assistance of inkjet printing, multi-color security patterns can be designed and encoded, which can be revealed by UV irradiation and further verified by water stimulation. This study has pioneered a novel strategy to verify the authenticity of decrypted information, which greatly improves the security level of information.
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Affiliation(s)
- Hui Shang
- Key Laboratory of Advanced Marine Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.
- School of Chemical Sciences, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Xiaoxia Le
- Key Laboratory of Advanced Marine Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.
- School of Chemical Sciences, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Yu Sun
- Key Laboratory of Advanced Marine Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.
- School of Chemical Sciences, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Shuangshuang Wu
- Key Laboratory of Advanced Marine Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.
- School of Chemical Sciences, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Yu Wang
- Shanghai Yuking Water Soluble Material Tech Co., Ltd, Banxia Road, Shanghai 200120, China
| | - Patrick Théato
- Soft Matter Synthesis Laboratory, Institute for Biological Interfaces III, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, Engesser Str.18, 76131 Karlsruhe, Germany
| | - Tao Chen
- Key Laboratory of Advanced Marine Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.
- School of Chemical Sciences, University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
- College of Material Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology Ministry of Education Hangzhou Normal University, Hangzhou 311121, China
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Tian X, Guo Y, Zhang J, Ivasishin OM, Jia J, Yan J. Fiber Actuators Based on Reversible Thermal Responsive Liquid Crystal Elastomer. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2306952. [PMID: 38175860 DOI: 10.1002/smll.202306952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 12/16/2023] [Indexed: 01/06/2024]
Abstract
Soft actuators inspired by the movement of organisms have attracted extensive attention in the fields of soft robotics, electronic skin, artificial intelligence, and healthcare due to their excellent adaptability and operational safety. Liquid crystal elastomer fiber actuators (LCEFAs) are considered as one of the most promising soft actuators since they can provide reversible linear motion and are easily integrated or woven into complex structures to perform pre-programmed movements such as stretching, rotating, bending, and expanding. The research on LCEFAs mainly focuses on controllable preparation, structural design, and functional applications. This review, for the first time, provides a comprehensive and systematic review of recent advances in this important field by focusing on reversible thermal response LCEFAs. First, the thermal driving mechanism, and direct and indirect heating strategies of LCEFAs are systematically summarized and analyzed. Then, the fabrication methods and functional applications of LCEFAs are summarized and discussed. Finally, the challenges and technical difficulties that may hinder the performance improvement and large-scale production of LCEFAs are proposed, and the development opportunities of LCEFAs are prospected.
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Affiliation(s)
- Xuwang Tian
- College of Materials Science and Engineering, Key Laboratory of Automobile Materials Ministry of Education, Jilin University, Changchun, 130012, China
| | - Yongshi Guo
- College of Textile, Donghua University, Shanghai, 201620, China
| | - Jiaqi Zhang
- College of Materials Science and Engineering, Key Laboratory of Automobile Materials Ministry of Education, Jilin University, Changchun, 130012, China
| | - Orest M Ivasishin
- College of Materials Science and Engineering, Key Laboratory of Automobile Materials Ministry of Education, Jilin University, Changchun, 130012, China
| | - Jiru Jia
- School of Textile Garment and Design, Changshu Institute of Technology, Suzhou, Jiangsu, 215500, China
| | - Jianhua Yan
- College of Textile, Donghua University, Shanghai, 201620, China
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Iravani S, Varma RS. MXenes for Bioinspired Soft Actuators: Advancements in Angle-Independent Structural Colors and Beyond. NANO-MICRO LETTERS 2024; 16:142. [PMID: 38436795 PMCID: PMC10912076 DOI: 10.1007/s40820-024-01367-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 01/23/2024] [Indexed: 03/05/2024]
Abstract
Soft actuators have garnered substantial attention in current years in view of their potential appliances in diverse domains like robotics, biomedical devices, and biomimetic systems. These actuators mimic the natural movements of living organisms, aiming to attain enhanced flexibility, adaptability, and versatility. On the other hand, angle-independent structural color has been achieved through innovative design strategies and engineering approaches. By carefully controlling the size, shape, and arrangement of nanostructures, researchers have been able to create materials exhibiting consistent colors regardless of the viewing angle. One promising class of materials that holds great potential for bioinspired soft actuators is MXenes in view of their exceptional mechanical, electrical, and optical properties. The integration of MXenes for bioinspired soft actuators with angle-independent structural color offers exciting possibilities. Overcoming material compatibility issues, improving color reproducibility, scalability, durability, power supply efficiency, and cost-effectiveness will play vital roles in advancing these technologies. This perspective appraises the development of bioinspired MXene-centered soft actuators with angle-independent structural color in soft robotics.
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Affiliation(s)
- Siavash Iravani
- Independent Researcher, W Nazar ST, Boostan Ave, Isfahan, Iran.
| | - Rajender S Varma
- Centre of Excellence for Research in Sustainable Chemistry, Department of Chemistry, Federal University of São Carlos, São Carlos, SP, 13565-905, Brazil.
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Wei H, Chen C, Yang D. Applications of inverse opal photonic crystal hydrogels in the preparation of acid-base color-changing materials. RSC Adv 2024; 14:2243-2263. [PMID: 38213963 PMCID: PMC10777361 DOI: 10.1039/d3ra07465j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 01/05/2024] [Indexed: 01/13/2024] Open
Abstract
Hydrogels are three-dimensional (3D) crosslinked network hydrophilic polymers that have structures similar to that of biological protein tissue and can quickly absorb a large amount of water. Opal photonic crystals (OPCs) are a kind of photonic band gap material formed by the periodic arrangement of 3D media, and inverse opal photonic crystals (IOPCs) are their inverse structure. Inverse opal photonic crystal hydrogels (IOPCHs) can produce corresponding visual color responses to a change in acid or alkali in an external humid environment, which has wide applications in chemical sensing, anti-counterfeiting, medical detection, intelligent display, and other fields, and the field has developed rapidly in recent years. In this paper, the research progress on fast acid-base response IOPCHs (pH-IOPCHs) is comprehensively described from the perspective of material synthesis. The technical bottleneck of enhancing the performance of acid-base-responsive IOPCHs and the current practical application limitations are summarized, and the development prospects of acid-base-responsive IOPCHs are described. These comprehensive analyses are expected to provide new ideas for solving problems in the preparation and application of pH-IOPCHs.
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Affiliation(s)
- Hu Wei
- Research Institute for National Defense Engineering of Academy of Military Science, PLA Luoyang 471023 China +086-18761686837
- Henan Key Laboratory of Special Protective Materials Luoyang 471023 China
| | - Changbing Chen
- Research Institute for National Defense Engineering of Academy of Military Science, PLA Luoyang 471023 China +086-18761686837
- Henan Key Laboratory of Special Protective Materials Luoyang 471023 China
| | - Dafeng Yang
- Research Institute for National Defense Engineering of Academy of Military Science, PLA Luoyang 471023 China +086-18761686837
- Henan Key Laboratory of Special Protective Materials Luoyang 471023 China
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6
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Xia Y, Meng Y, Yu R, Teng Z, Zhou J, Wang S. Bio-Inspired Hydrogel-Elastomer Actuator with Bidirectional Bending and Dynamic Structural Color. Molecules 2023; 28:6752. [PMID: 37836595 PMCID: PMC10574087 DOI: 10.3390/molecules28196752] [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: 08/25/2023] [Revised: 09/12/2023] [Accepted: 09/20/2023] [Indexed: 10/15/2023] Open
Abstract
In nature, some creatures can change their body shapes and surface colors simultaneously to respond to the external environments, which greatly inspired researchers in the development of color-tunable soft actuators. In this work, we present a facile method to prepare a smart hydrogel actuator that can bend bidirectionally and change color simultaneously, just like an octopus. The actuator is fabricated by elastomer/hydrogel bilayer and the hydrogel layer was decorated with thermoresponsive microgels as the photonic crystal blocks. Compared with the previously reported poly(N-isopropylacrylamide) hydrogel-based bilayer hydrogel actuators, which are generally limited to one-directional deformation, the elastomer/hydrogel bilayer actuator prepared in our work exhibits unique bidirectional bending behavior in accordance with the change of structural color. The bending degrees can be changed from -360° to 270° in response to solution temperatures ranging from 20 °C to 60 °C. At the same time, the surface color changes from red to green, and then to blue, covering the full visible light spectrum. The bending direction and degree of the hydrogel actuator can easily be adjusted by tuning the layer thickness ratio of the elastomer/hydrogel or the composition of the hydrogel. The color-tunable hydrogel-elastomer actuator reported in this work can achieve both programmable deformations and color-changing highly resembling the natural actuating behaviors of creatures.
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Affiliation(s)
- Yongqing Xia
- Department of Biological and Bioenergy Chemical Engineering, College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China; (Y.M.); (R.Y.); (Z.T.); (J.Z.); (S.W.)
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7
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Wang J, Sotzing M, Lee M, Chortos A. Passively addressed robotic morphing surface (PARMS) based on machine learning. SCIENCE ADVANCES 2023; 9:eadg8019. [PMID: 37478174 PMCID: PMC10361599 DOI: 10.1126/sciadv.adg8019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 06/21/2023] [Indexed: 07/23/2023]
Abstract
Reconfigurable morphing surfaces provide new opportunities for advanced human-machine interfaces and bio-inspired robotics. Morphing into arbitrary surfaces on demand requires a device with a sufficiently large number of actuators and an inverse control strategy. Developing compact, efficient control interfaces and algorithms is vital for broader adoption. In this work, we describe a passively addressed robotic morphing surface (PARMS) composed of matrix-arranged ionic actuators. To reduce the complexity of the physical control interface, we introduce passive matrix addressing. Matrix addressing allows the control of N2 independent actuators using only 2N control inputs, which is substantially lower than traditional direct addressing (N2 control inputs). Using machine learning with finite element simulations for training, our control algorithm enables real-time, high-precision forward and inverse control, allowing PARMS to dynamically morph into arbitrary achievable predefined surfaces on demand. These innovations may enable the future implementation of PARMS in wearables, haptics, and augmented reality/virtual reality.
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Affiliation(s)
- Jue Wang
- Department of Mechanical Engineering, Purdue University, 500 Central Dr, Lafayette, IN 47907, USA
| | - Michael Sotzing
- Department of Mechanical Engineering, Purdue University, 500 Central Dr, Lafayette, IN 47907, USA
| | - Mina Lee
- Department of Mechanical Engineering, Purdue University, 500 Central Dr, Lafayette, IN 47907, USA
| | - Alex Chortos
- Department of Mechanical Engineering, Purdue University, 500 Central Dr, Lafayette, IN 47907, USA
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8
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Zhang X, Gan J, Fan L, Luo Z, Zhao Y. Bioinspired Adaptable Indwelling Microneedles for Treatment of Diabetic Ulcers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2210903. [PMID: 36916986 DOI: 10.1002/adma.202210903] [Citation(s) in RCA: 38] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 03/08/2023] [Indexed: 06/09/2023]
Abstract
Microneedles provide an effective strategy for transdermal drug delivery. Many endeavors have been devoted to developing smart microneedles that can respond to and interact with pathophysiological environments. Here, novel bioinspired adaptable indwelling microneedles with therapeutic exosome encapsulation are presented for diabetic wound healing by a combined fabrication strategy of template replication and 3D transfer printing. Such microneedles are composed of mesenchymal stem cell (MSC)-exosomes-encapsulated adjustable poly(vinyl alcohol) (PVA) hydrogel needle tips and detachable 3M medical tape supporting substrate. As the mechanical strength of the PVA hydrogel is ionically responsive due to Hofmeister effects, the hardness of the resultant microneedle tips can be upregulated by sulfate ions to ensure skin penetration and be softened by nitrate ions after tip-substrate detachment to adapt to the surrounding tissue and release exosomes. Because the MSC-exosomes can effectively activate fibroblasts, vascular endothelial cells, and macrophages, the indwelling microneedles are demonstrated with the function of promoting tissue regeneration and diabetic wound healing in full-thickness cutaneous wounds of diabetic rat models. These features indicate that the bioinspired adaptable indwelling microneedles are with practical values and clinical prospects in tissue and wound regeneration.
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Affiliation(s)
- Xiaoxuan Zhang
- Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, P. R. China
- Chemistry and Biomedicine Innovation Center, Nanjing University, Nanjing, 210023, P. R. China
| | - Jingjing Gan
- Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, P. R. China
| | - Lu Fan
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325001, P. R. China
| | - Zhiqiang Luo
- Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, P. R. China
| | - Yuanjin Zhao
- Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, P. R. China
- Chemistry and Biomedicine Innovation Center, Nanjing University, Nanjing, 210023, P. R. China
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325001, P. R. China
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Feng W, Pal A, Wang T, Ren Z, Yan Y, Lu Y, Yang H, Sitti M. Cholesteric Liquid Crystal Polymeric Coatings for Colorful Artificial Muscles and Motile Humidity Sensor Skin Integrated with Magnetic Composites. ADVANCED FUNCTIONAL MATERIALS 2023; 33:adfm.202300731. [PMID: 37293509 PMCID: PMC7614630 DOI: 10.1002/adfm.202300731] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Indexed: 06/10/2023]
Abstract
Structural colorful cholesterics show impressive susceptibility to external stimulation, leading to applications in electro/mechano-chromic devices. However, out-of-plane actuation of structural colorful actuators based on cholesterics and the integration with other stimulation remains underdeveloped. Herein, colorful actuators and motile humidity sensors are developed using humidity-responsive cholesteric liquid crystal networks (CLCNs) and magnetic composites. The developed colorful actuator can exhibit synergistic out-of-plane shape morphing and color change in response to humidity, with CLCNs as colorful artificial muscles. Through the integration with magnetic control, the motile sensor can be navigated to open and confined spaces with the aid of friction to detect local relative humidity. The integration of multi-stimulation actuation of cholesteric magnetic actuators will expand the research frontier of structural colorful actuators and motile sensors for confined spaces.
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Affiliation(s)
- Wei Feng
- Physical Intelligence Department, Max Planck Institute for Intelligent Systems, 70569 Stuttgart, Germany
| | - Aniket Pal
- Physical Intelligence Department, Max Planck Institute for Intelligent Systems, 70569 Stuttgart, Germany
| | - Tianlu Wang
- Physical Intelligence Department, Max Planck Institute for Intelligent Systems, 70569 Stuttgart, Germany; Institute for Biomedical Engineering, ETH Zürich, 8092 Zürich, Switzerland
| | - Ziyu Ren
- Physical Intelligence Department, Max Planck Institute for Intelligent Systems, 70569 Stuttgart, Germany
| | - Yingbo Yan
- Physical Intelligence Department, Max Planck Institute for Intelligent Systems, 70569 Stuttgart, Germany; Laboratory for Multiscale Mechanics and Medical Science, SV LAB, School of Aerospace, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yanqing Lu
- National Laboratory of Solid-state Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China
| | - Huai Yang
- Beijing Advanced Innovation Center for Materials Genome Engineering & School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Metin Sitti
- Physical Intelligence Department, Max Planck Institute for Intelligent Systems, 70569 Stuttgart, Germany; Institute for Biomedical Engineering, ETH Zürich, 8092 Zürich, Switzerland; School of Medicine and College of Engineering, Koç University, Istanbul 34450, Turkey
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Pan Y, Li C, Hou X, Yang Z, Li M, Shum HC. Pixelating Responsive Structural Color via a Bioinspired Morphable Concavity Array (MoCA) Composed of 2D Photonic Crystal Elastomer Actuators. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2300347. [PMID: 36793100 PMCID: PMC10104634 DOI: 10.1002/advs.202300347] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Indexed: 06/18/2023]
Abstract
Stimuli-responsive structural coloration allows the color change of soft substrates in response to environmental stimuli such as heat, humidity, and solvents. Such color-changing systems enable smart soft devices, such as the camouflageable skin of soft robots or chromatic sensors in wearable devices. However, individually and independently programmable stimuli-responsive color pixels remain significant challenges among the existing color-changing soft materials and devices, which are crucial for dynamic display. Inspired by the dual-color concavities on butterfly wings, a morphable concavity array to pixelate the structural color of two-dimensional photonic crystal elastomer and achieve individually and independently addressable stimuli-responsive color pixels is designed. The morphable concavity can convert its surface between concave and flat upon changes in the solvent and temperature, accompanied by angle-dependent color-shifting. Through multichannel microfluidics, the color of each concavity can be controllably switched. Based on the system, the dynamic display by forming reversibly editable letters and patterns for anti-counterfeiting and encryption are demonstrated. It is believed that the strategy of pixelating optical properties through locally altering surface topography can inspire the design of new transformable optical devices, such as artificial compound eyes or crystalline lenses for biomimetic and robotic applications.
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Affiliation(s)
- Yi Pan
- Department of Mechanical EngineeringThe University of Hong KongPokfulam RoadHong Kong999077P. R. China
| | - Chang Li
- Department of Mechanical EngineeringThe University of Hong KongPokfulam RoadHong Kong999077P. R. China
| | - Xiaoyu Hou
- Key Laboratory of Green PrintingInstitute of ChemistryChinese Academy of SciencesBeijing100190P. R. China
| | - Zhenyu Yang
- Department of Mechanical EngineeringThe University of Hong KongPokfulam RoadHong Kong999077P. R. China
| | - Mingzhu Li
- Key Laboratory of Green PrintingInstitute of ChemistryChinese Academy of SciencesBeijing100190P. R. China
| | - Ho Cheung Shum
- Department of Mechanical EngineeringThe University of Hong KongPokfulam RoadHong Kong999077P. R. China
- Advanced Biomedical Instrumentation CentreHong Kong Science ParkNew Territories, ShatinHong Kong999077P. R. China
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11
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Lanthanide coordinated multicolor fluorescent polymeric hydrogels for bio-inspired shape/color switchable actuation through local diffusion of Tb3+/Eu3+ ions. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.108086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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12
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Chen Y, Lou Z, Chen Z, Yang S, Hu J, Wei J. Magnetic-Fluorescent Responsive Janus Photonic Crystal Beads for Self-Destructive Anti-counterfeiting. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:14387-14399. [PMID: 36351291 DOI: 10.1021/acs.langmuir.2c02546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
In this study, we fabricate magnetic-fluorescent responsive Janus photonic crystal beads (JPCBs) based on poly(styrene-methyl methacrylate-acrylic acid) (p(St-MMA-AA)) colloidal nanoparticles, Fe3O4, and photobase generators used for self-destructive anti-counterfeiting. We synthesize two kinds of photobase generators that can react with fluorescamine to produce various fluorescence colors. A microfluidic method is used to obtain the Janus photonic crystal beads. The upper portions of the JPCBs are photonic crystals assembled with colloidal spheres, whereas the Fe3O4 settles down to the bottom of the JPCBs due to its higher density. Photobase generators are distributed in photonic crystal gaps. Because of the magnetism of the Fe3O4, the JPCBs could be flipped from one side to the other in the presence of a magnet. After being exposed to UVC light and fluorescamine, the JPCBs can fluoresce under UVA light. Then, we create Janus microbeads arrays with various types of beads and apply them to the visitor card, bracelet, and box label to provide irreversible and self-destructive anti-counterfeiting. The JPCBs are capable of being encoded and angle-independently displayed, which are crucial to their applications in anti-counterfeiting, information coding, and array display.
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Affiliation(s)
- Yiping Chen
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing100029, P. R. China
| | - Zhenze Lou
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing100029, P. R. China
| | - Zihao Chen
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing100029, P. R. China
| | - Shuangye Yang
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing100029, P. R. China
| | - Jiashuo Hu
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing100029, P. R. China
| | - Jie Wei
- Beijing Engineering Research Center for the Synthesis and Applications of Waterborne Polymers, Beijing100029, P. R. China
- Key Laboratory of Carbon Fibers and Functional Polymers, Ministry of Education, Beijing100029, P. R. China
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing100029, P. R. China
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Zhang P, de Haan LT, Debije MG, Schenning APHJ. Liquid crystal-based structural color actuators. LIGHT, SCIENCE & APPLICATIONS 2022; 11:248. [PMID: 35931672 PMCID: PMC9356073 DOI: 10.1038/s41377-022-00937-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 06/25/2022] [Accepted: 07/17/2022] [Indexed: 05/08/2023]
Abstract
Animals can modify their body shape and/or color for protection, camouflage and communication. This adaptability has inspired fabrication of actuators with structural color changes to endow soft robots with additional functionalities. Using liquid crystal-based materials for actuators with structural color changes is a promising approach. In this review, we discuss the current state of liquid crystal-based actuators with structural color changes and the potential applications of these structural color actuators in soft robotic devices.
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Affiliation(s)
- Pei Zhang
- Stimuli-responsive Functional Materials and Devices, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Den Dolech 2, 5600 MB, Eindhoven, The Netherlands
| | - Laurens T de Haan
- Stimuli-responsive Functional Materials and Devices, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
- SCNU-TUE Joint Lab of Device Integrated Responsive Materials (DIRM), National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou, 510006, China
| | - Michael G Debije
- Stimuli-responsive Functional Materials and Devices, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands.
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Den Dolech 2, 5600 MB, Eindhoven, The Netherlands.
| | - Albert P H J Schenning
- Stimuli-responsive Functional Materials and Devices, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands.
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Den Dolech 2, 5600 MB, Eindhoven, The Netherlands.
- SCNU-TUE Joint Lab of Device Integrated Responsive Materials (DIRM), National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou, 510006, China.
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14
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Yin F, Liu J, Hu J, Ju Y. Bioinspired Polyacrylamide/(polyvinyl alcohol-copper acetate) Hydrogel with Cooling-triggered Shape Memory, Color Changing, and Self-healing Behavior. Macromol Rapid Commun 2022; 43:e2200401. [PMID: 35836310 DOI: 10.1002/marc.202200401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 07/05/2022] [Indexed: 11/10/2022]
Abstract
Inspired by many living creatures with adjustment of shape and color in ever-changing environment, color changeable shape memory hydrogels are designed and expected to be potential candidates in the fields spanning from anti-counterfeiting to biomedical devices. However, they normally require complex synthesis, and more importantly, the cooling-induced shape recovery hydrogel is still rare and in its infancy so far. Herein, we have developed a unique color changeable shape memory hydrogel by simply incorporating polyvinyl alcohol and copper acetate into covalent polyacrylamide network. As core functional element, copper ions serve as reversible crosslinks after heating to achieve excellent cooling-triggered shape memory effect, color shifting and self-healing behavior, showing significant potential in diverse applications like grabbing, information encryption, and biomimetic designs. This work may guide the development of cooling-triggered smart hydrogels for practical applications. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Feng Yin
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Jinguo Liu
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Jun Hu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Yong Ju
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, China
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15
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Qin M, Li J, Song Y. Toward High Sensitivity: Perspective on Colorimetric Photonic Crystal Sensors. Anal Chem 2022; 94:9497-9507. [PMID: 35759455 DOI: 10.1021/acs.analchem.2c01804] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The sensitivity of colorimetric photonic crystal (PC) sensors have been significantly improved with the advancement of deformable structural color materials, structures design, sensing signal analysis methods, and fabrication strategies. In this perspective, the strategies toward high-sensitivity colorimetric PC sensors are discussed, from the perspectives of molecular design, single sensor construction, and multisensor assembly, which include incorporation of flexible polymer chains, construction of strong sensor-analyte interactions, incorporation of more soft materials, construction of stimuli-angle/orientation relationship, design of colorimetric sensors in series, and assembly of colorimetric PC sensors in parallel. Based on these strategies, progress of high-sensitivity colorimetric PC sensors in recent years is summarized, in terms of mechano-sensors and chemo-/biosensors. Specifically, PC based optical-electrical dual-signal sensing devices are included. Finally, the future development and challenges of high-sensitivity colorimetric PC sensors are presented, in regards to deformable properties, optical properties, analysis methods, and fabrication strategies.
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Affiliation(s)
- Meng Qin
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Jianshu Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Yanlin Song
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences, Beijing 100190, China
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16
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Qi Y, Zhou C, Qiu Y, Cao X, Niu W, Wu S, Zheng Y, Ma W, Ye H, Zhang S. Biomimetic Janus photonic soft actuator with structural color self-reporting. MATERIALS HORIZONS 2022; 9:1243-1252. [PMID: 35080571 DOI: 10.1039/d1mh01693h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Soft actuators with variable signal/color play an important role in the fields of targeted locomotion, artificial phototropism, drug screening, cargo transportation, and interactive sensing. The ability to achieve rapid response, large curvature, wide bending angle, and full-color display continues to be an unresolved challenge for artificial actuating materials. Inspired by the angle-dependent structural color of broad-tailed hummingbird and the Janus wettability of the lotus leaf, a Janus photonic soft actuator (JPSA) was fabricated by integrating an underwater super-oleophilic copper micro-nano array and oil-phobic inverse opal through a Laplace channel. The JPSA exhibits unidirectional permeability to underwater oil droplets. Attractively, with the combination of a swellable super-oleophilic surface and photonic crystals, JPSAs were endowed with oil-controlled reversible bending behavior with self-reporting angle-dependent color indication. We described for the first time the directional actuating mechanism induced by underwater oil unidirectional penetration and revealed the corresponding actuating kinetics and the inner-stress distribution/transfer by using structural color. As an extension of such theory, a rapid responsive JPSA with a wide bending angle and full-color self-reporting is further fabricated. This work provides an efficient strategy for oil directional transportation and separation in aqueous media and inspires the fabrication of a soft actuator/sensor with structural color self-reporting.
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Affiliation(s)
- Yong Qi
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, P. O. Box 89, West Campus, 2# Linggong Rd, Dalian 116024, China.
| | - Changtong Zhou
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, P. O. Box 89, West Campus, 2# Linggong Rd, Dalian 116024, China.
| | - Yisong Qiu
- International Research Center for Computational Mechanics, State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, 2# Linggong Rd, Dalian 116024, China
| | - Xianfei Cao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, P. O. Box 89, West Campus, 2# Linggong Rd, Dalian 116024, China.
| | - Wenbin Niu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, P. O. Box 89, West Campus, 2# Linggong Rd, Dalian 116024, China.
| | - Suli Wu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, P. O. Box 89, West Campus, 2# Linggong Rd, Dalian 116024, China.
| | - Yonggang Zheng
- International Research Center for Computational Mechanics, State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, 2# Linggong Rd, Dalian 116024, China
| | - Wei Ma
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, P. O. Box 89, West Campus, 2# Linggong Rd, Dalian 116024, China.
| | - Hongfei Ye
- International Research Center for Computational Mechanics, State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, 2# Linggong Rd, Dalian 116024, China
| | - Shufen Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, P. O. Box 89, West Campus, 2# Linggong Rd, Dalian 116024, China.
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17
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Fang J, Zhuang Y, Liu K, Chen Z, Liu Z, Kong T, Xu J, Qi C. A Shift from Efficiency to Adaptability: Recent Progress in Biomimetic Interactive Soft Robotics in Wet Environments. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2104347. [PMID: 35072360 PMCID: PMC8922102 DOI: 10.1002/advs.202104347] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/30/2021] [Indexed: 05/07/2023]
Abstract
Research field of soft robotics develops exponentially since it opens up many imaginations, such as human-interactive robot, wearable robots, and transformable robots in unpredictable environments. Wet environments such as sea and in vivo represent dynamic and unstructured environments that adaptive soft robots can reach their potentials. Recent progresses in soft hybridized robotics performing tasks underwater herald a diversity of interactive soft robotics in wet environments. Here, the development of soft robots in wet environments is reviewed. The authors recapitulate biomimetic inspirations, recent advances in soft matter materials, representative fabrication techniques, system integration, and exemplary functions for underwater soft robots. The authors consider the key challenges the field faces in engineering material, software, and hardware that can bring highly intelligent soft robots into real world.
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Affiliation(s)
- Jielun Fang
- College of Mechatronics and Control EngineeringShenzhen UniversityShenzhen518000China
| | - Yanfeng Zhuang
- Department of Biomedical EngineeringSchool of MedicineShenzhen UniversityShenzhenGuangdong518000China
| | - Kailang Liu
- College of Mechatronics and Control EngineeringShenzhen UniversityShenzhen518000China
| | - Zhuo Chen
- The State Key Laboratory of Chemical EngineeringDepartment of Chemical EngineeringTsinghua UniversityBeijing100084China
| | - Zhou Liu
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhenGuangdong518000China
| | - Tiantian Kong
- Department of Biomedical EngineeringSchool of MedicineShenzhen UniversityShenzhenGuangdong518000China
| | - Jianhong Xu
- The State Key Laboratory of Chemical EngineeringDepartment of Chemical EngineeringTsinghua UniversityBeijing100084China
| | - Cheng Qi
- College of Mechatronics and Control EngineeringShenzhen UniversityShenzhen518000China
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18
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Abstract
Colloidal self-assembly refers to a solution-processed assembly of nanometer-/micrometer-sized, well-dispersed particles into secondary structures, whose collective properties are controlled by not only nanoparticle property but also the superstructure symmetry, orientation, phase, and dimension. This combination of characteristics makes colloidal superstructures highly susceptible to remote stimuli or local environmental changes, representing a prominent platform for developing stimuli-responsive materials and smart devices. Chemists are achieving even more delicate control over their active responses to various practical stimuli, setting the stage ready for fully exploiting the potential of this unique set of materials. This review addresses the assembly of colloids into stimuli-responsive or smart nanostructured materials. We first delineate the colloidal self-assembly driven by forces of different length scales. A set of concepts and equations are outlined for controlling the colloidal crystal growth, appreciating the importance of particle connectivity in creating responsive superstructures. We then present working mechanisms and practical strategies for engineering smart colloidal assemblies. The concepts underpinning separation and connectivity control are systematically introduced, allowing active tuning and precise prediction of the colloidal crystal properties in response to external stimuli. Various exciting applications of these unique materials are summarized with a specific focus on the structure-property correlation in smart materials and functional devices. We conclude this review with a summary of existing challenges in colloidal self-assembly of smart materials and provide a perspective on their further advances to the next generation.
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Affiliation(s)
- Zhiwei Li
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Qingsong Fan
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Yadong Yin
- Department of Chemistry, University of California, Riverside, California 92521, United States
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19
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Ren L, Li B, Wei G, Wang K, Song Z, Wei Y, Ren L, Qingping Liu. Biology and bioinspiration of soft robotics: Actuation, sensing, and system integration. iScience 2021; 24:103075. [PMID: 34568796 PMCID: PMC8449090 DOI: 10.1016/j.isci.2021.103075] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Organisms in nature grow with senses, nervous, and actuation systems coordinated in ingenious ways to sustain metabolism and other essential life activities. The understanding of biological structures and functions guide the construction of soft robotics with unprecedented performances. However, despite the progress in soft robotics, there still remains a big gap between man-made soft robotics and natural lives in terms of autonomy, adaptability, self-repair, durability, energy efficiency, etc. Here, the actuation and sensing strategies in the natural biological world are summarized along with their man-made counterparts applied in soft robotics. The development trends of bioinspired soft robotics toward closed loop and embodiment are proposed. Challenges for obtaining autonomous soft robotics similar to natural organisms are outlined to provide a perspective in this field.
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Affiliation(s)
- Luquan Ren
- Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun 130022, China
| | - Bingqian Li
- Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun 130022, China
| | - Guowu Wei
- School of Science, Engineering and Environment, University of Salford, M5 4WT Salford, UK
| | - Kunyang Wang
- Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun 130022, China
| | - Zhengyi Song
- Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun 130022, China
| | - Yuyang Wei
- School of Mechanical, Aerospace and Civil Engineering, University of Manchester, M13 9PL Manchester, UK
| | - Lei Ren
- Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun 130022, China.,School of Mechanical, Aerospace and Civil Engineering, University of Manchester, M13 9PL Manchester, UK
| | - Qingping Liu
- Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun 130022, China
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20
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Li X, Liu J, Li D, Huang S, Huang K, Zhang X. Bioinspired Multi-Stimuli Responsive Actuators with Synergistic Color- and Morphing-Change Abilities. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2101295. [PMID: 34114362 PMCID: PMC8373155 DOI: 10.1002/advs.202101295] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/28/2021] [Indexed: 05/08/2023]
Abstract
The combination of complex perception, defense, and camouflage mechanisms is a pivotal instinctive ability that equips organisms with survival advantages. The simulations of such fascinating multi-stimuli responsiveness, including thigmotropism, bioluminescence, color-changing ability, and so on, are of great significance for scientists to develop novel biomimetic smart materials. However, most biomimetic color-changing or luminescence materials can only realize a single stimulus-response, hence the design and fabrication of multi-stimuli responsive materials with synergistic color-changing are still on the way. Here, a bioinspired multi-stimuli responsive actuator with color- and morphing-change abilities is developed by taking advantage of the assembled cellulose nanocrystals-based cholesteric liquid crystal structure and its water/temperature response behaviors. The actuator exhibits superfast, reversible bi-directional humidity and near-infrared (NIR) light actuating ability (humidity: 9 s; NIR light: 16 s), accompanying with synergistic iridescent appearance which provides a visual cue for the movement of actuators. This work paves the way for biomimetic multi-stimuli responsive materials and will have a wide range of applications such as optical anti-counterfeiting devices, information storage materials, and smart soft robots.
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Affiliation(s)
- Xinkai Li
- State Key Laboratory of Polymer Materials EngineeringPolymer Research Institute of Sichuan UniversityNo.24 South Section 1, Yihuan RoadChengdu610065China
| | - Jize Liu
- State Key Laboratory of Polymer Materials EngineeringPolymer Research Institute of Sichuan UniversityNo.24 South Section 1, Yihuan RoadChengdu610065China
| | - Dongdong Li
- Environmental protection facilities or service departmentGuangxi Beitou Environmental Protection & Water Group Co.Ltd. 153 Minzu AvenueNanning530029China
| | - Shaoquan Huang
- National Engineering Research Center for Non‐Food BiorefineryGuangxi Key Laboratory of Bio‐refineryGuangxi Academy of Sciences98 Daling RoadNanning530007China
| | - Kai Huang
- National Engineering Research Center for Non‐Food BiorefineryGuangxi Key Laboratory of Bio‐refineryGuangxi Academy of Sciences98 Daling RoadNanning530007China
| | - Xinxing Zhang
- State Key Laboratory of Polymer Materials EngineeringPolymer Research Institute of Sichuan UniversityNo.24 South Section 1, Yihuan RoadChengdu610065China
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21
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Zhang H, Huang C, Li N, Wei J. Fabrication of multicolor Janus microbeads based on photonic crystals and upconversion nanoparticles. J Colloid Interface Sci 2021; 592:249-258. [PMID: 33662829 DOI: 10.1016/j.jcis.2021.02.068] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/03/2021] [Accepted: 02/15/2021] [Indexed: 11/15/2022]
Abstract
In this study, a facile method to fabricate Janus microbeads based on photonic crystals and upconversion nanoparticles is designed. The Janus microbeads can be reversed under magnetic response and generate upconversion fluorescence under near-infrared light. Three kinds of core-shell upconversion nanoparticles (UCNPs) are prepared by the solvothermal method and are mixed with Fe3O4 nanoparticles and different sizes of colloidal spheres. The Janus microbeads are assembled according to the hydrophilic property of the mixture and the hydrophobic property of substrates. The upper parts of the Janus microbeads are photonic crystals assembled with colloidal spheres, and the other parts are Fe3O4. Meanwhile, UCNPs are distributed inside the Janus microbeads. Furthermore, the Janus microbeads are prepared into different lattice patterns using special templates. In the lattice patterns, the structural colors of Janus microbeads can be displayed and disappeared by magnetic field inversion, and under external NIR irradiation, Janus microbeads can generate upconversion fluorescence to achieve multiple color display. The Janus microbeads are also applied to both sides of the bank card, and various reading information methods are designed according to different response modes, which have important applications in pattern display, response materials, and anti-counterfeiting.
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Affiliation(s)
- Hanbing Zhang
- Key Laboratory of Carbon Fibers and Functional Polymers, Ministry of Education, Beijing 100029, PR China; Beijing Engineering Research Center for the Synthesis and Applications of Waterborne Polymers, Beijing 100029, PR China; College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Chao Huang
- Key Laboratory of Carbon Fibers and Functional Polymers, Ministry of Education, Beijing 100029, PR China; Beijing Engineering Research Center for the Synthesis and Applications of Waterborne Polymers, Beijing 100029, PR China; College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Nanshu Li
- Key Laboratory of Carbon Fibers and Functional Polymers, Ministry of Education, Beijing 100029, PR China; Beijing Engineering Research Center for the Synthesis and Applications of Waterborne Polymers, Beijing 100029, PR China; College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Jie Wei
- Key Laboratory of Carbon Fibers and Functional Polymers, Ministry of Education, Beijing 100029, PR China; Beijing Engineering Research Center for the Synthesis and Applications of Waterborne Polymers, Beijing 100029, PR China; College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China.
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22
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Hu H, Huang C, Galluzzi M, Ye Q, Xiao R, Yu X, Du X. Editing the Shape Morphing of Monocomponent Natural Polysaccharide Hydrogel Films. RESEARCH (WASHINGTON, D.C.) 2021; 2021:9786128. [PMID: 34195615 PMCID: PMC8214511 DOI: 10.34133/2021/9786128] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 05/08/2021] [Indexed: 01/06/2023]
Abstract
Shape-morphing hydrogels can be widely used to develop artificial muscles, reconfigurable biodevices, and soft robotics. However, conventional approaches for developing shape-morphing hydrogels highly rely on composite materials or complex manufacturing techniques, which limit their practical applications. Herein, we develop an unprecedented strategy to edit the shape morphing of monocomponent natural polysaccharide hydrogel films via integrating gradient cross-linking density and geometry effect. Owing to the synergistic effect, the shape morphing of chitosan (CS) hydrogel films with gradient cross-linking density can be facilely edited by changing their geometries (length-to-width ratios or thicknesses). Therefore, helix, short-side rolling, and long-side rolling can be easily customized. Furthermore, various complex artificial 3D deformations such as artificial claw, horn, and flower can also be obtained by combining various flat CS hydrogel films with different geometries into one system, which can further demonstrate various shape transformations as triggered by pH. This work offers a simple strategy to construct a monocomponent hydrogel with geometry-directing programmable deformations, which provides universal insights into the design of shape-morphing polymers and will promote their applications in biodevices and soft robotics.
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Affiliation(s)
- Hao Hu
- Institute of Biomedical & Health Engineering, Shenzhen Institute of Advanced Technology (SIAT), Chinese Academy of Sciences (CAS), Shenzhen 518035, China
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, School of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Chao Huang
- Institute of Biomedical & Health Engineering, Shenzhen Institute of Advanced Technology (SIAT), Chinese Academy of Sciences (CAS), Shenzhen 518035, China
| | - Massimiliano Galluzzi
- Institute of Advanced Materials Science and Engineering, Shenzhen Institute of Advanced Technology (SIAT), Chinese Academy of Sciences (CAS), Shenzhen 518035, China
| | - Qiang Ye
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, School of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Rui Xiao
- State Key Laboratory of Fluid Power & Mechatronic System, Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, Department of Engineering Mechanics, Zhejiang University, Hangzhou 310027, China
| | - Xuefeng Yu
- Institute of Advanced Materials Science and Engineering, Shenzhen Institute of Advanced Technology (SIAT), Chinese Academy of Sciences (CAS), Shenzhen 518035, China
| | - Xuemin Du
- Institute of Biomedical & Health Engineering, Shenzhen Institute of Advanced Technology (SIAT), Chinese Academy of Sciences (CAS), Shenzhen 518035, China
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