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Recent progress in electronic skin: Materials, functions and applications

  • Department of Electronic Engineering and Information Sciences, University of Science and Technology of China, Hefei 230027, China

Cite this:
https://doi.org/10.52396/JUST-2021-0075
  • Received Date: 15 March 2021
  • Rev Recd Date: 30 March 2021
  • Publish Date: 31 October 2021
    Abstract

  • Abstract

    Electronic skin refers to a device that imitates the characteristics of human skin and has similar perception functions. Benefiting from its excellent wearability and versatility, it has shown great applications in the fields of health monitoring, human-computer interaction and machine perception in recent years and has attracted much attention.This article summarizes the research progress of electronic skin in recent years from three aspects of material properties, functional properties and typical applications. It focuses on how to realize the stretchability, self-repairing and biocompatibility of electronic skin, and the real-time monitoring of physical, chemical and electrophysiological signals. Finally, the challenges and possible solutions for the further development of electronic skin are discussed and prospected.As an emerging research hotspot, electronic skin requires the cooperation of scientists in many fields, such as materials science, informatics, engineering, and biology, in order to fully realize its potential.

    Abstract

    Electronic skin refers to a device that imitates the characteristics of human skin and has similar perception functions. Benefiting from its excellent wearability and versatility, it has shown great applications in the fields of health monitoring, human-computer interaction and machine perception in recent years and has attracted much attention.This article summarizes the research progress of electronic skin in recent years from three aspects of material properties, functional properties and typical applications. It focuses on how to realize the stretchability, self-repairing and biocompatibility of electronic skin, and the real-time monitoring of physical, chemical and electrophysiological signals. Finally, the challenges and possible solutions for the further development of electronic skin are discussed and prospected.As an emerging research hotspot, electronic skin requires the cooperation of scientists in many fields, such as materials science, informatics, engineering, and biology, in order to fully realize its potential.
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  • [1]
    Wortmann F, Flüchter K. Internet of things. Business & Information Systems Engineering, 2015, 57(3): 221-224.
    [2]
    Whitmore A, Agarwal A, Xu L D. The Internet of things—A survey of topics and trends. Information Systems Frontiers, 2014, 17(2): 261-274.
    [3]
    Trung T Q, Lee N E. Flexible and stretchable physical sensor integrated platforms for wearable human-activity monitoringand personal healthcare. Advanced Materials, 2016, 28(22): 4338-4372.
    [4]
    Ma Y, Li H, Chen S, et al. Skin‐like electronics for perception and interaction: Materials, structural designs, and applications. Advanced Intelligent Systems, 2020: 2000108(1-17).
    [5]
    Hammock M L, Chortos A, Tee B C, et al. The evolution of electronic skin (e-skin): A brief history, design considerations, and recent progress. Advanced Materials, 2013, 25(42): 5997-6038.
    [6]
    Yang J C, Mun J, Kwon S Y, et al. Electronic skin: Recent progress and future prospects for skin-attachable devices for health monitoring, robotics, and prosthetics. Advanced Materials, 2019, 31(48): e1904765.
    [7]
    Chiauzzi E, Rodarte C, Dasmahapatra P. Patient-centered activity monitoring in the self-management of chronic health conditions. BMC Med., 2015, 13: 77(1-6).
    [8]
    Park S, Heo S W, Lee W, et al. Self-powered ultra-flexible electronics via nano-grating-patterned organic photovoltaics. Nature, 2018, 561(7724): 516-521.
    [9]
    Piwek L, Ellis D A, Andrews S, et al. The rise of consumer health wearables: Promises and barriers. PLoS Med, 2016, 13(2): e1001953.
    [10]
    Gambhir S S, Ge T J, Vermesh O, et al. Toward achieving precision health. Science Translational Medicine, 2018, 10(430): eaao3612.
    [11]
    Wang S, Xu J, Wang W, et al. Skin electronics from scalable fabrication of an intrinsically stretchable transistor array. Nature, 2018, 555(7694): 83-88.
    [12]
    Kim Y, Chortos A, Xu W T, et al. A bioinspired flexible organic artificial afferent nerve. Science, 2018, 360(6392): 998-1003.
    [13]
    Kang D, Pikhitsa P V, Choi Y W, et al. Ultrasensitive mechanical crack-based sensor inspired by the spider sensory system. Nature, 2014, 516(7530): 222-226.
    [14]
    Koo J, Amoli V, Kim S Y, et al. Low-power, deformable, dynamic multicolor electrochromic skin. Nano Energy, 2020, 78:105199.
    [15]
    Zhang C, Zhou Y, Han H, et al. Dopamine-triggered hydrogels with high transparency, self-adhesion, and thermoresponse as skinlike sensors. ACS Nano, 2021, 15(1): 1785-1794.
    [16]
    Rahman M A, Walia S, Naznee S, et al. Artificial somatosensors: Feedback receptors for electronic skins. Advanced Intelligent Systems, 2020, 2(11) :2000094.
    [17]
    Larson C, Peele B, Li S, et al. Highly stretchable electroluminescent skin for optical signaling and tactile sensing. Science, 2016, 351(6277): 1071-1074.
    [18]
    You I, Mackanic D G, Matsuhisa N, et al. Artificial multimodal receptors based on ion relaxation dynamics. Science, 2020, 370(6519): 961-965.
    [19]
    Ha M, Lim S, Cho S, et al. Skin-inspired hierarchical polymer architectures with gradient stiffness for spacer-free, ultrathin, and highly sensitive triboelectric sensors. ACS Nano, 2018, 12(4): 3964-3674.
    [20]
    Pang Y, Zhang K, Yang Z, et al. Epidermis microstructure inspired graphene pressure sensor with random distributed spinosum for high sensitivity and large linearity. ACS Nano, 2018, 12(3): 2346-2354.
    [21]
    Park J, Kim M, Lee Y, et al. Fingertip skin-inspired microstructured ferroelectric skins discriminate static/dynamic pressure and temperature stimuli. Science Advances, 2015, 1(9): e1500661.
    [22]
    Wang S, Oh J Y, Xu J, et al. Skin-inspired electronics: An emerging paradigm. Accounts of Chemical Research, 2018, 51(5): 1033-1045.
    [23]
    Gu L, Poddar S, Lin Y, et al. A biomimetic eye with a hemispherical perovskite nanowire array retina. Nature, 2020, 581(7808): 278-282.
    [24]
    Fuentes-Hernandez C, Chou W F, Khan T M, et al. Large-area low-noise flexible organic photodiodes for detecting faint visible light. Science, 2020, 370(6517): 698-701.
    [25]
    Wang C, Wang C, Huang Z, et al. Materials and structures toward soft electronics. Advanced Materials, 2018, 30(50): e1801368.
    [26]
    Matsuhisa N, Chen X, Bao Z, et al. Materials and structural designs of stretchable conductors. Chemical Society Reviews, 2019, 48(11): 2946-2966.
    [27]
    Drack M, Graz I, Sekitani T, et al. An imperceptible plastic electronic wrap. Advanced Materials, 2015, 27(1): 34-40.
    [28]
    Xu S, Zhang Y H, Jia L, et al. Soft microfluidic assemblies of sensors, circuits, and radios for the skin. Science, 2014, 344(6179): 70-74.
    [29]
    Graz I M, Cotton D P J, Robinson A, et al. Silicone substrate with in situ strain relief for stretchable thin-film transistors. Applied Physics Letters, 2011, 98(12): 124101.
    [30]
    Yuk H, Zhang T, Lin S, et al. Tough bonding of hydrogels to diverse non-porous surfaces. Nature Materials, 2016, 15(2): 190-196.
    [31]
    Bartlett M D, Fassler A, Kazem N, et al. Stretchable, high-k dielectric elastomers through liquid-metal inclusions. Advanced Materials, 2016, 28(19): 3726-3731.
    [32]
    Chen Y H, Lu S Y, Zhang S S, et al. Skin-like biosensor system via electrochemical channels for noninvasive blood glucose monitoring. Science Advances, 2017, 3(12): e1701629.
    [33]
    Pan L, Yu G, Zhai D, et al. Hierarchical nanostructured conducting polymer hydrogel with high electrochemical activity. Proceedings of the National Academy of Sciences of the United States of America, 2012, 109(24): 9287-9292.
    [34]
    Zhang C, Wu B, Zhou Y, et al. Mussel-inspired hydrogels: From design principles to promising applications. Chem Soc Rev, 2020, 49(11): 3605-3637.
    [35]
    Cai Y C, Shen J, Yang C W, et al. Mixed-dimensional MXene-hydrogel heterostructures for electronic skin sensors with ultrabroad working range. Science Advances, 2020, 6(48): eabb5367.
    [36]
    Zhao Z, Zhang K, Liu Y, et al. Highly stretchable, shape memory organohydrogels using phase-transition microinclusions. Advanced Materials, 2017, 29(33): 1701695.
    [37]
    Gao H, Zhao Z, Cai Y, et al. Adaptive and freeze-tolerant heteronetwork organohydrogels with enhanced mechanical stability over a wide temperature range. Nature Communications, 2017, 8: 15911.
    [38]
    Lee Y Y, Kang H Y, Gwon S H, et al. A strain-insensitive stretchable electronic conductor: PEDOT:PSS/Acrylamide organogels. Advanced Materials, 2016, 28(8): 1636-1643.
    [39]
    Dickey M D. Stretchable and soft electronics using liquid metals. Advanced Materials, 2017, 29(27): 1606425.
    [40]
    Lu Y, Hu Q Y, Lin Y L, et al. Transformable liquid-metal nanomedicine. Nature Communications, 2015, 6: 10066.
    [41]
    Kazem N, Hellebrekers T, Majidi C. Soft multifunctional composites and emulsions with liquid metals. Advanced Materials, 2017, 29(27): 1605985.
    [42]
    Khoshmanesh K, Tang S Y, Zhu J Y, et al. Liquid metal enabled microfluidics. Lab on a Chip, 2017, 17(6); 974-993.
    [43]
    Zhu S, So J H, Mays R, et al. Ultrastretchable fibers with metallic conductivity using a liquid metal alloy core. Advanced Functional Materials, 2013, 23(18): 2308-2314.
    [44]
    Shan W, Lu T, Majidi C. Soft-matter composites with electrically tunable elastic rigidity. Smart Materials and Structures, 2013, 22(8): 0850005.
    [45]
    Kramer R K, Majidi C, Wood R J. Masked deposition of gallium-indium alloys for liquid-embedded elastomer conductors. Advanced Functional Materials, 2013, 23(42): 5292-5296.
    [46]
    Guo R, Sun X, Yao S, et al. Semi‐liquid‐metal‐(Ni‐EGaIn)‐based ultraconformable electronic tattoo. Advanced Materials Technologies, 2019, 4(8): 1900183(1-11).
    [47]
    Inoue A, Yuk H, Lu B Y, et al. Strong adhesion of wet conducting polymers on diverse substrates. Science Advances, 2020, 6(12): eaay5394.
    [48]
    Root S E, Savagatrup S, Printz A D, et al. Mechanical properties of organic semiconductors for stretchable, highly flexible, and mechanically robust electronics. Chemical Reviews, 2017, 117(9): 6467-699.
    [49]
    Kim J, Lee J, You J, et al. Conductive polymers for next-generation energy storage systems: Recent progress and new functions. Materials Horizons, 2016, 3(6): 517-535.
    [50]
    De Izarra A, Park S, Lee J, et al. Ionic liquid designed for PEDOT:PSS conductivity enhancement. Journal of the American Chemical Society, 2018, 140(16): 5375-5384.
    [51]
    Lipomi D J, Chong H, Vosgueritchian M, et al. Toward mechanically robust and intrinsically stretchable organic solar cells: Evolution of photovoltaic properties with tensile strain. Solar Energy Materials and Solar Cells, 2012, 107; 355-365.
    [52]
    Chen G, Rastak R, Wang Y, et al. Strain- and strain-rate-invariant conductance in a stretchable and compressible 3D conducting polymer foam. Matter, 2019, 1(1): 205-218.
    [53]
    Lee Y, Shin M, Thiyagarajan K, et al. Approaches to Stretchable Polymer Active Channels for Deformable Transistors. Macromolecules, 2016, 49(2); 433-444.
    [54]
    Xu J, Wang S H, Wang G J N, et al. Highly stretchable polymer semiconductor films through the nanoconfinement effect. Science, 2017, 355(6320): 59-64.
    [55]
    Rogers J A, Ghaffari R, Kim D H. Stretchable Bioelectronics for Medical Devices and Systems. Cham: Springer International Publishing, 2016.
    [56]
    He J, Nuzzo R G, Rogers J A. Inorganic materials and assembly techniques for flexible and stretchable electronics. Proceedings of the IEEE, 2015, 103(4): 619-632.
    [57]
    Choi S, Lee H, Ghaffari R, et al. Recent advances in flexible and stretchable bio-electronic devices integrated with nanomaterials. Advanced Materials, 2016, 28(22): 4203-4218.
    [58]
    Wang S H, Xu J, Wang W C, et al. Skin electronics from scalable fabrication of an intrinsically stretchable transistor array. Nature, 2018, 555(7694): 83-88.
    [59]
    Zhu L, Wang Y, Mei D, et al. Fully elastomeric fingerprint-shaped electronic skin based on tunable patterned graphene/silver nanocomposites. ACS Applied Materials & Interfaces, 2020, 12(28): 31725-31737.
    [60]
    Lee J, Chung S, Song H, et al. Lateral-crack-free, buckled, inkjet-printed silver electrodes on highly pre-stretched elastomeric substrates. Journal of Physics D: Applied Physics, 2013, 46(10): 105305(1-5).
    [61]
    Kaltenbrunner M, White M S, Glowacki E D, et al. Ultrathin and lightweight organic solar cells with high flexibility. Nature Communications, 2012, 3: 770.
    [62]
    Sun Y, Kumar V, Adesida I, et al. Buckled and wavy ribbons of GaAs for high-performance electronics on elastomeric substrates. Advanced Materials, 2006, 18(21): 2857-2862.
    [63]
    Yang S, Ng E, Lu N. Indium tin oxide (ITO) serpentine ribbons on soft substrates stretched beyond 100%. Extreme Mechanics Letters, 2015, 2: 37-45.
    [64]
    Xu L, Gutbrod S R, Ma Y, et al. Materials and fractal designs for 3D multifunctional integumentary membranes with capabilities in cardiac electrotherapy. Advanced Materials, 2015, 27(10): 1731-1737.
    [65]
    Hattori Y, Falgout L, Lee W, et al. Multifunctional skin-like electronics for quantitative, clinical monitoring of cutaneous wound healing. Advanced Healthcare Materials, 2014, 3(10): 1597-1607.
    [66]
    Rehman M U, Rojas J P. Optimization of compound serpentine–spiral structure for ultra-stretchable electronics. Extreme Mechanics Letters, 2017, 15: 44-50.
    [67]
    Qaiser N, Khan S M, Nour M, et al. Mechanical response of spiral interconnect arrays for highly stretchable electronics. Applied Physics Letters, 2017, 111(21): 214102.
    [68]
    Rojas J P, Arevalo A, Foulds I G, et al. Design and characterization of ultra-stretchable monolithic silicon fabric. Applied Physics Letters, 2014, 105(15): 154101.
    [69]
    Yoo J, Jeong S, Kim S, et al. A stretchable nanowire UV-Vis-NIR photodetector with high performance. Advanced Materials, 2015, 27(10): 1712-1717.
    [70]
    Lee J, Wu J, Shi M, et al. Stretchable GaAs photovoltaics with designs that enable high areal coverage. Advanced Materials, 2011, 23(8): 986-991.
    [71]
    Jang K I, Li K, Chung H U, et al. Self-assembled three dimensional network designs for soft electronics. Nature Communications, 2017, 8: 15894.
    [72]
    Liu Y, Yan Z, Lin Q, et al. Guided formation of 3D helical mesostructures by mechanical buckling: Analytical modeling and experimental validation. Adv Funct Mater, 2016, 26(17): 2909-2918.
    [73]
    Fan Z, Zhang Y, Ma Q, et al. A finite deformation model of planar serpentine interconnects for stretchable electronics. International Journal of Solids and Structures, 2016, 91: 46-54.
    [74]
    Tang R, Huang H, Tu H E, et al. Origami-enabled deformable silicon solar cells. Applied Physics Letters, 2014, 104(8): 083501.
    [75]
    Bertoldi K, Vitelli V, Christensen J, et al. Flexible mechanical metamaterials. Nature Reviews Materials, 2017, 2(11): 17066.
    [76]
    Callens S J P, Zadpoor A A. From flat sheets to curved geometries: Origami and kirigami approaches. Materials Today, 2018, 21(3): 241-264.
    [77]
    Tang Y C, Lin G J, Yang S, et al. Programmable Kiri-Kirigami metamaterials. Advanced Materials, 2017, 29(10): 1604262.
    [78]
    Shyu T C, Damasceno P F, Dodd P M, et al. A kirigami approach to engineering elasticity in nanocomposites through patterned defects. Nature Materials, 2015, 14(8): 785-789.
    [79]
    Dong Z L, Jiang C C, Cheng H H, et al. Facile fabrication of light, flexible and multifunctional graphene fibers. Advanced Materials, 2012, 24(14); 1856-1861.
    [80]
    Ghosh T. Stretch, wrap, and relax to smartness. Science, 2015, 349(6246): 382-383.
    [81]
    Zhao H, Hou L, Wu J X, et al. Fabrication of dual-side metal patterns onto textile substrates for wearable electronics by combining wax-dot printing with electroless plating. Journal of Materials Chemistry C, 2016, 4(29); 7156-7164.
    [82]
    Lee S S, Choi K H, Kim S H, et al. Wearable supercapacitors printed on garments. Advanced Functional Materials, 2018, 28(11): 1705571.
    [83]
    Matsuhisa N, Kaltenbrunner M, Yokota T, et al. Printable elastic conductors with a high conductivity for electronic textile applications. Nature Communications, 2015, 6: 7461.
    [84]
    Jost K, Stenger D, Perez C R, et al. Knitted and screen printed carbon-fiber supercapacitors for applications in wearable electronics. Energy & Environmental Science, 2013, 6(9); 2698-2705.
    [85]
    Huynh T P, Sonar P, Haick H. Advanced materials for use in soft self-healing devices. Advanced Materials, 2017, 29(19): 1604973.
    [86]
    Chang T, Panhwar F, Zhao G. Flourishing self-healing surface materials: Recent progresses and challenges. Advanced Materials Interfaces, 2020, 7(6): 1901959.
    [87]
    Burattini S, Greenland B W, Hayes W, et al. A supramolecular polymer based on tweezer-type π π stacking interactions: Molecular design for healability and enhanced toughness. Chemistry of Materials, 2011, 23(1): 6-8.
    [88]
    White S R, Sottos N R, Geubelle P H, et al. Autonomic healing of polymer composites. Nature, 2001, 409(6822): 794-797.
    [89]
    Li Y, Chen S, Wu M, et al. Polyelectrolyte multilayers impart healability to highly electrically conductive films. Advanced Materials, 2012, 24(33): 4578-4582.
    [90]
    Son D, Kang J, Vardoulis O, et al. An integrated self-healable electronic skin system fabricated via dynamic reconstruction of a nanostructured conducting network. Nature Nanotechnology, 2018, 13(11): 1057-1065.
    [91]
    Kim S M, Jeon H, Shin S H, et al. Superior toughness and fast self-healing at room temperature engineered by transparent elastomers. Advanced Materials, 2018, 30(1): 1705145.
    [92]
    Zhang Q, Niu S, Wang L, et al. An elastic autonomous self-healing capacitive sensor based on a dynamic dual crosslinked chemical system. Advanced Materials, 2018: e1801435.
    [93]
    Zheng R, Peng Z, Fu Y, et al. A novel conductive core–shell particle based on liquid metal for fabricating real‐time self‐repairing flexible circuits. Advanced Func