Abstract
Flexible and wearable sensors have drawn extensive concern due to their wide potential applications in wearable electronics and intelligent robots. Flexible sensors with high sensitivity, good flexibility, and excellent stability are highly desirable for monitoring human biomedical signals, movements and the environment. The active materials and the device structures are the keys to achieve high performance. Carbon nanomaterials, including carbon nanotubes (CNTs), graphene, carbon black and carbon nanofibers, are one of the most commonly used active materials for the fabrication of high-performance flexible sensors due to their superior properties. Especially, CNTs and graphene can be assembled into various multi-scaled macroscopic structures, including one dimensional fibers, two dimensional films and three dimensional architectures, endowing the facile design of flexible sensors for wide practical applications. In addition, the hybrid structured carbon materials derived from natural bio-materials also showed a bright prospect for applications in flexible sensors. This review provides a comprehensive presentation of flexible and wearable sensors based on the above various carbon materials. Following a brief introduction of flexible sensors and carbon materials, the fundamentals of typical flexible sensors, such as strain sensors, pressure sensors, temperature sensors and humidity sensors, are presented. Then, the latest progress of flexible sensors based on carbon materials, including the fabrication processes, performance and applications, are summarized. Finally, the remaining major challenges of carbon-based flexible electronics are discussed and the future research directions are proposed.
摘要
摘要近年来, 柔性传感器因其在可穿戴电子设备和智能系统中的广阔应用前景而备受关注. 柔性可穿戴传感器具有高灵敏度、 良好的 机械柔性、 优异的稳定性、 人体友好性等特点, 在人体运动与生理信号监测、 环境因素检测等方面具有极大的应用潜力. 一般而言, 柔性 传感器的性能主要取决于敏感材料的选择与器件的结构设计. 得益于其优异的性能和灵活多样的组装结构与形貌>碳材料是目前应用最 广泛的敏感材料之一. 根据需求, 纳米碳材料可组装为各类宏观结枸, 比如一维的纤维, 二维的薄膜和三维的块体结构>从而可用于制备各 种柔性传感器以适应不同的需求.此外, 通过规模化、 低成本的高温碳化工艺可以将天然生物质材料转化为柔性、 导电碳材料, 并用于高 性能柔性传慼器制备. 本文针对碳材料在柔性器件中的应用, 综述了各类碳材料的制备方法与结构特点,并重点介绍了其柔性可穿戴传慼 器的制备与性能. 第一部分简要介绍了柔性传感器与碳材料; 第二部分概述了四类典型柔性传感器的工作原理与性能特点; 第三部分详细 综述了一维、 二维和三维碳材料的制备方法与其在柔性传感器的组装、 性能与应用方面的最新研究进展; 最后, 总结了碳基柔性传感器 领域的发展现状, 讨论了该领域所面临的挑战及其未来前景.
Similar content being viewed by others
References
Amjadi M, Kyung KU, Park I, et al. Stretchable, skin-mountable, and wearable strain sensors and their potential applications: a review. Adv Funct Mater, 2016, 26: 1678–1698
Chen K, Gao W, Emaminejad S, et al. Printed carbon nanotube electronics and sensor systems. Adv Mater, 2016, 28: 4397–4414
Choi S, Lee H, Ghaffari R, et al. Recent advances in flexible and stretchable bio-electronic devices integrated with nanomaterials. Adv Mater, 2016, 28: 4203–4218
Hammock ML, Chortos A, Tee BCK, et al. 25th anniversary article: the evolution of electronic skin (e-skin): a brief history, design considerations, and recent progress. Adv Mater, 2013, 25: 5997–6038
Rim YS, Bae SH, Chen H, et al. Recent progress in materials and devices toward printable and flexible sensors. Adv Mater, 2016, 28: 4415–4440
Zang Y, Zhang F, Di C, et al. Advances of flexible pressure sensors toward artificial intelligence and health care applications. Mater Horiz, 2015, 2: 140–156
McEvoy MA, Correll N. Materials that couple sensing, actuation, computation, and communication. Science, 2015, 347: 1261689–1261689
Trung TQ, Lee NE. Flexible and stretchable physical sensor integrated platforms for wearable human-activity monitoringand personal healthcare. Adv Mater, 2016, 28: 4338–4372
Wang X, Liu Z, Zhang T. Flexible sensing electronics for wearable/attachable health monitoring. Small, 2017, 13: 1602790
Yang Y, Yang X, Tan Y, et al. Recent progress in flexible and wearable bio-electronics based on nanomaterials. Nano Res, 2017, 10: 1560–1583
Yamada T, Hayamizu Y, Yamamoto Y, et al. A stretchable carbon nanotube strain sensor for human-motion detection. Nat Nanotech, 2011, 6: 296–301
Cai L, Song L, Luan P, et al. Super-stretchable, transparent carbon nanotube-based capacitive strain sensors for human motion detection. Sci Rep, 2013, 3: 3048
Wang Y, Wang L, Yang T, et al. Wearable and highly sensitive graphene strain sensors for human motion monitoring. Adv Funct Mater, 2014, 24: 4666–4670
Kim KK, Hong S, Cho HM, et al. Highly sensitive and stretchable multidimensional strain sensor with prestrained anisotropic metal nanowire percolation networks. Nano Lett, 2015, 15: 5240–5247
Wang Y, Yang T, Lao J, et al. Ultra-sensitive graphene strain sensor for sound signal acquisition and recognition. Nano Res, 2015, 8: 1627–1636
Schwartz G, Tee BCK, Mei J, et al. Flexible polymer transistors with high pressure sensitivity for application in electronic skin and health monitoring. Nat Commun, 2013, 4: 1859
Dagdeviren C, Su Y, Joe P, et al. Conformable amplified lead zirconate titanate sensors with enhanced piezoelectric response for cutaneous pressure monitoring. Nat Commun, 2014, 5: 4496
Bae GY, Pak SW, Kim D, et al. Linearly and highly pressuresensitive electronic skin based on a bioinspired hierarchical structural array. Adv Mater, 2016, 28: 5300–5306
Ha-Chul Jung, Jin-Hee Moon, Dong-Hyun Baek, et al. CNT/PDMS composite flexible dry electrodesfor long-term ECG monitoring. IEEE Trans Biomed Eng, 2012, 59: 1472–1479
Choi M, Jeong JJ, Kim SH, et al. Reduction of motion artifacts and improvement of R peak detecting accuracy using adjacent non-intrusive ECG sensors. Sensors, 2016, 16: 715
You I, Kim B, Park J, et al. Stretchable e-skin apexcardiogram sensor. Adv Mater, 2016, 28: 6359–6364
Atalay O, Kennon WR, Demirok E. Weft-knitted strain sensor for monitoring respiratory rate and its electro-mechanical modeling. IEEE Sensors J, 2015, 15: 110–122
Zhao F, Cheng H, Zhang Z, et al. Direct power generation from a graphene oxide film under moisture. Adv Mater, 2015, 27: 4351–4357
Khan Y, Ostfeld AE, Lochner CM, et al. Monitoring of vital signs with flexible and wearable medical devices. Adv Mater, 2016, 28: 4373–4395
Ren X, Pei K, Peng B, et al. A low-operating-power and flexible active-matrix organic-transistor temperature-sensor array. Adv Mater, 2016, 28: 4832–4838
Zhao H, Zhang Y, Bradford PD, et al. Carbon nanotube yarn strain sensors. Nanotechnology, 2010, 21: 305502
Jung S, Kim JH, Kim J, et al. Reverse-micelle-induced porous pressure-sensitive rubber for wearable human-machine interfaces. Adv Mater, 2014, 26: 4825–4830
Amjadi M, Yoon YJ, Park I. Ultra-stretchable and skin-mountable strain sensors using carbon nanotubes-ecoflex nanocomposites. Nanotechnology, 2015, 26: 375501
Chou HH, Nguyen A, Chortos A, et al. A chameleon-inspired stretchable electronic skin with interactive colour changing controlled by tactile sensing. Nat Commun, 2015, 6: 8011
Cai G, Wang J, Qian K, et al. Extremely stretchable strain sensors based on conductive self-healing dynamic cross-links hydrogels for human-motion detection. Adv Sci, 2017, 4: 1600190
He Q, Sudibya HG, Yin Z, et al. Centimeter-long and large-scale micropatterns of reduced graphene oxide films: fabrication and sensing applications. ACS Nano, 2010, 4: 3201–3208
Chen Z, Ming T, Goulamaly MM, et al. Enhancing the sensitivity of percolative graphene films for flexible and transparent pressure sensor arrays. Adv Funct Mater, 2016, 26: 5061–5067
Trung TQ, Tien NT, Kim D, et al. A flexible reduced graphene oxide field-effect transistor for ultrasensitive strain sensing. Adv Funct Mater, 2014, 24: 117–124
Huang X, Qi X, Boey F, et al. Graphene-based composites. Chem Soc Rev, 2012, 41: 666–686
He Q, Wu S, Yin Z, et al. Graphene-based electronic sensors. Chem Sci, 2012, 3: 1764
Kenry, Yeo JC, Yu J, et al. Highly flexible graphene oxide nanosuspension liquid-based microfluidic tactile sensor. Small, 2016, 12: 1593–1604
Chi H, Liu YJ, Wang FK, et al. Highly sensitive and fast response colorimetric humidity sensors based on graphene oxides film. ACS Appl Mater Interfaces, 2015, 7: 19882–19886
Wang X, Qiu Y, Cao W, et al. Highly stretchable and conductive core-sheath chemical vapor deposition graphene fibers and their applications in safe strain sensors. Chem Mater, 2015, 27: 6969–6975
He Q, Wu S, Gao S, et al. Transparent, flexible, all-reduced graphene oxide thin film transistors. ACS Nano, 2011, 5: 5038–5044
Sun Q, Kim DH, Park SS, et al. Transparent, low-power pressure sensor matrix based on coplanar-gate graphene transistors. Adv Mater, 2014, 26: 4735–4740
Mattmann C, Clemens F, Tröster G. Sensor for measuring strain in textile. Sensors, 2008, 8: 3719–3732
Wang L, Ding T, Wang P. Thin flexible pressure sensor array based on carbon black/silicone rubber nanocomposite. IEEE Sensors J, 2009, 9: 1130–1135
Lin Shu, Tao Hua, Yangyong Wang, et al. In-shoe plantar pressure measurement and analysis system based on fabric pressure sensing array. IEEE Trans Inform Technol Biomed, 2010, 14: 767–775
Yi W, Wang Y, Wang G, et al. Investigation of carbon black/silicone elastomer/dimethylsilicone oil composites for flexible strain sensors. Polymer Testing, 2012, 31: 677–684
Wu X, Han Y, Zhang X, et al. Large-area compliant, low-cost, and versatile pressure-sensing platform based on microcrack-designed carbon black@polyurethane sponge for human-machine interfacing. Adv Funct Mater, 2016, 26: 6246–6256
Sun B, Long YZ, Liu SL, et al. Fabrication of curled conducting polymer microfibrous arrays via a novel electrospinning method for stretchable strain sensors. Nanoscale, 2013, 5: 7041–7045
Pan L, Chortos A, Yu G, et al. An ultra-sensitive resistive pressure sensor based on hollow-sphere microstructure induced elasticity in conducting polymer film. Nat Commun, 2014, 5: 3002
Savagatrup S, Chan E, Renteria-Garcia SM, et al. Plasticization of PEDOT:PSS by common additives for mechanically robust organic solar cells and wearable sensors. Adv Funct Mater, 2015, 25: 427–436
Tee BCK, Wang C, Allen R, et al. An electrically and mechanically self-healing composite with pressure-and flexion-sensitive properties for electronic skin applications. Nat Nanotech, 2012, 7: 825–832
Amjadi M, Pichitpajongkit A, Lee S, et al. Highly stretchable and sensitive strain sensor based on silver nanowire-elastomer nanocomposite. ACS Nano, 2014, 8: 5154–5163
Gong S, Schwalb W, Wang Y, et al. A wearable and highly sensitive pressure sensor with ultrathin gold nanowires. Nat Commun, 2014, 5: 3132
Kang D, Pikhitsa PV, Choi YW, et al. Ultrasensitive mechanical crack-based sensor inspired by the spider sensory system. Nature, 2014, 516: 222–226
Lee J, Kim S, Lee J, et al. A stretchable strain sensor based on a metal nanoparticle thin film for human motion detection. Nanoscale, 2014, 6: 11932–11939
Gerratt AP, Michaud HO, Lacour SP. Elastomeric electronic skin for prosthetic tactile sensation. Adv Funct Mater, 2015, 25: 2287–2295
Su B, Gong S, Ma Z, et al. Mimosa-inspired design of a flexible pressure sensor with touch sensitivity. Small, 2015, 11: 1886–1891
Wu W, Wen X, Wang ZL. Taxel-addressable matrix of verticalnanowire piezotronic transistors for active and adaptive tactile imaging. Science, 2013, 340: 952–957
Ha M, Lim S, Park J, et al. Bioinspired interlocked and hierarchical design of ZnO nanowire arrays for static and dynamic pressure-sensitive electronic skins. Adv Funct Mater, 2015, 25: 2841–2849
Segevbar M, Haick H. Flexible sensors based on nanoparticles. ACS Nano, 2013, 7: 8366–8378
Xia K, Jian M, Zhang Y. Advances in wearable and flexible conductors based on nanocarbon materials. Acta Phys-Chim Sin, 2016, 32: 2427–2446
Lu W, Zu M, Byun JH, et al. State of the art of carbon nanotube fibers: opportunities and challenges. Adv Mater, 2012, 24: 1805–1833
Meng F, Lu W, Li Q, et al. Graphene-based fibers: a review. Adv Mater, 2015, 27: 5113–5131
Du J, Pei S, Ma L, et al. 25th anniversary article: carbon nanotubeand graphene-based transparent conductive films for optoelectronic devices. Adv Mater, 2014, 26: 1958–1991
Sun DM, Liu C, Ren WC, et al. A review of carbon nanotube-and graphene-based flexible thin-film transistors. Small, 2013, 9: 1188–1205
Du R, Zhao Q, Zhang N, et al. Macroscopic carbon nanotubebased 3D monoliths. Small, 2015, 11: 3263–3289
Li Z, Liu Z, Sun H, et al. Superstructured assembly of nanocarbons: fullerenes, nanotubes, and graphene. Chem Rev, 2015, 115: 7046–7117
Zhang Q, Huang JQ, Qian WZ, et al. The road for nanomaterials industry: a review of carbon nanotube production, post-treatment, and bulk applications for composites and energy storage. Small, 2013, 9: 1237–1265
Luo N, Dai W, Li C, et al. Flexible piezoresistive sensor patch enabling ultralow power cuffless blood pressure measurement. Adv Funct Mater, 2016, 26: 1178–1187
Wang C, Li X, Gao E, et al. Carbonized silk fabric for ultrastretchable, highly sensitive, and wearable strain sensors. Adv Mater, 2016, 28: 6640–6648
Zhang M, Wang C, Wang H, et al. Carbonized cotton fabric for high-performance wearable strain sensors. Adv Funct Mater, 2017, 27: 1604795
Wang C, Zhang M, Xia K, et al. Intrinsically stretchable and conductive textile by a scalable process for elastic wearable electronics. ACS Appl Mater Interfaces, 2017, 9: 13331–13338
Yan C, Wang J, Kang W, et al. Highly stretchable piezoresistive graphene-nanocellulose nanopaper for strain sensors. Adv Mater, 2014, 26: 2022–2027
Kim T, Park J, Sohn J, et al. Bioinspired, highly stretchable, and conductive dry adhesives based on 1D-2D hybrid carbon nanocomposites for all-in-one ecg electrodes. ACS Nano, 2016, 10: 4770–4778
Lim S, Son D, Kim J, et al. Transparent and stretchable interactive human machine interface based on patterned graphene heterostructures. Adv Funct Mater, 2015, 25: 375–383
Li YL, Kinloch IA, Windle AH. Direct spinning of carbon nanotube fibers from chemical vapor deposition synthesis. Science, 2004, 304: 276–278
Xu Z, Liu Y, Zhao X, et al. Ultrastiff and strong graphene fibers via full-scale synergetic defect engineering. Adv Mater, 2016, 28: 6449–6456
Zhang M, Huang L, Chen J, et al. Ultratough, ultrastrong, and highly conductive graphene films with arbitrary sizes. Adv Mater, 2014, 26: 7588–7592
Gui X, Wei J, Wang K, et al. Carbon nanotube sponges. Adv Mater, 2010, 22: 617–621
Sun H, Xu Z, Gao C. Multifunctional, ultra-flyweight, synergistically assembled carbon aerogels. Adv Mater, 2013, 25: 2554–2560
Wang X, Gu Y, Xiong Z, et al. Silk-molded flexible, ultrasensitive, and highly stable electronic skin for monitoring human physiological signals. Adv Mater, 2014, 26: 1336–1342
Trung TQ, Ramasundaram S, Hwang BU, et al. An all-elastomeric transparent and stretchable temperature sensor for bodyattachable wearable electronics. Adv Mater, 2016, 28: 502–509
Yan C, Wang J, Lee PS. Stretchable graphene thermistor with tunable thermal index. ACS Nano, 2015, 9: 2130–2137
Han DD, Zhang YL, Jiang HB, et al. Moisture-responsive graphene paper prepared by self-controlled photoreduction. Adv Mater, 2015, 27: 332–338
Zhao J, He C, Yang R, et al. Ultra-sensitive strain sensors based on piezoresistive nanographene films. Appl Phys Lett, 2012, 101: 063112
Zhao J, Wang G, Yang R, et al. Tunable piezoresistivity of nanographene films for strain sensing. ACS Nano, 2015, 9: 1622–1629
Lipomi DJ, Vosgueritchian M, Tee BCK, et al. Skin-like pressure and strain sensors based on transparent elastic films of carbon nanotubes. Nat Nanotech, 2011, 6: 788–792
Yao S, Zhu Y. Wearable multifunctional sensors using printed stretchable conductors made of silver nanowires. Nanoscale, 2014, 6: 2345–2352
Sun Q, Seung W, Kim BJ, et al. Active matrix electronic skin strain sensor based on piezopotential-powered graphene transistors. Adv Mater, 2015, 27: 3411–3417
Zhou J, Gu Y, Fei P, et al. Flexible piezotronic strain sensor. Nano Lett, 2008, 8: 3035–3040
Chen S, Lou Z, Chen D, et al. Highly flexible strain sensor based on ZnO nanowires and P(VDF-TrFE) fibers for wearable electronic device. Sci China Mater, 2016, 59: 173–181
Li X, Zhang R, Yu W, et al. Stretchable and highly sensitive graphene-on-polymer strain sensors. Sci Rep, 2012, 2: 870
Rahimi R, Ochoa M, Yu W, et al. Highly stretchable and sensitive unidirectional strain sensor via laser carbonization. ACS Appl Mater Interfaces, 2015, 7: 4463–4470
Tang Y, Zhao Z, Hu H, et al. Highly stretchable and ultrasensitive strain sensor based on reduced graphene oxide microtubeselastomer composite. ACS Appl Mater Interfaces, 2015, 7: 27432–27439
Yang T, Wang W, Zhang H, et al. Tactile sensing system based on arrays of graphene woven microfabrics: electromechanical behavior and electronic skin application. ACS Nano, 2015, 9: 10867–10875
Ho DH, Sun Q, Kim SY, et al. Stretchable and multimodal all graphene electronic skin. Adv Mater, 2016, 28: 2601–2608
Song Y, Lee JI, Pyo S, et al. A highly sensitive flexible strain sensor based on the contact resistance change of carbon nanotube bundles. Nanotechnology, 2016, 27: 205502
Ryu S, Lee P, Chou JB, et al. Extremely elastic wearable carbon nanotube fiber strain sensor for monitoring of human motion. ACS Nano, 2015, 9: 5929–5936
Choi C, Lee JM, Kim SH, et al. Twistable and stretchable sandwich structured fiber for wearable sensors and supercapacitors. Nano Lett, 2016, 16: 7677–7684
Samad YA, Li Y, Schiffer A, et al. Graphene foam developed with a novel two-step technique for low and high strains and pressuresensing applications. Small, 2015, 11: 2380–2385
Zhao S, Gao Y, Li J, et al. Layer-by-layer assembly of multifunctional porous N-doped carbon nanotube hybrid architectures for flexible conductors and beyond. ACS Appl Mater Interfaces, 2015, 7: 6716–6723
Lee Y, Bae S, Jang H, et al. Wafer-scale synthesis and transfer of graphene films. Nano Lett, 2010, 10: 490–493
Tian H, Shu Y, Cui YL, et al. Scalable fabrication of high-performance and flexible graphene strain sensors. Nanoscale, 2014, 6: 699–705
Qin Y, Peng Q, Ding Y, et al. Lightweight, superelastic, and mechanically flexible graphene/polyimide nanocomposite foam for strain sensor application. ACS Nano, 2015, 9: 8933–8941
Luo S, Hoang PT, Liu T. Direct laser writing for creating porous graphitic structures and their use for flexible and highly sensitive sensor and sensor arrays. Carbon, 2016, 96: 522–531
Lin Y, Dong X, Liu S, et al. Graphene-elastomer composites with segregated nanostructured network for liquid and strain sensing application. ACS Appl Mater Interfaces, 2016, 8: 24143–24151
Lin Y, Liu S, Chen S, et al. A highly stretchable and sensitive strain sensor based on graphene-elastomer composites with a novel double-interconnected network. J Mater Chem C, 2016, 4: 6345–6352
Park S, Kim H, Vosgueritchian M, et al. Stretchable energy-harvesting tactile electronic skin capable of differentiating multiple mechanical stimuli modes. Adv Mater, 2014, 26: 7324–7332
Li C, Cui YL, Tian GL, et al. Flexible CNT-array double helices Strain Sensor with high stretchability for Motion Capture. Sci Rep, 2015, 5: 15554
Liu ZF, Fang S, Moura FA, et al. Hierarchically buckled sheathcore fibers for superelastic electronics, sensors, and muscles. Science, 2015, 349: 400–404
Roh E, Hwang BU, Kim D, et al. Stretchable, transparent, ultrasensitive, and patchable strain sensor for human-machine interfaces comprising a nanohybrid of carbon nanotubes and conductive elastomers. ACS Nano, 2015, 9: 6252–6261
Wang H, Liu Z, Ding J, et al. Downsized sheath-core conducting fibers for weavable superelastic wires, biosensors, supercapacitors, and strain sensors. Adv Mater, 2016, 28: 4998–5007
Fu XW, Liao ZM, Zhou JX, et al. Strain dependent resistance in chemical vapor deposition grown graphene. Appl Phys Lett, 2011, 99: 213107
Bae SH, Lee Y, Sharma BK, et al. Graphene-based transparent strain sensor. Carbon, 2013, 51: 236–242
Du D, Li P, Ouyang J. Graphene coated nonwoven fabrics as wearable sensors. J Mater Chem C, 2016, 4: 3224–3230
Nam SH, Jeon PJ, Min SW, et al. Highly sensitive non-classical strain gauge using organic heptazole thin-film transistor circuit on a flexible substrate. Adv Funct Mater, 2014, 24: 4413–4419
Zhang Z, Liao Q, Zhang X, et al. Highly efficient piezotronic strain sensors with symmetrical Schottky contacts on the monopolar surface of ZnO nanobelts. Nanoscale, 2015, 7: 1796–1801
Luo S, Liu T. SWCNT/graphite nanoplatelet hybrid thin films for self-temperature-compensated, highly sensitive, and extensible piezoresistive sensors. Adv Mater, 2013, 25: 5650–5657
Shi J, Li X, Cheng H, et al. Graphene reinforced carbon nanotube networks for wearable strain sensors. Adv Funct Mater, 2016, 26: 2078–2084
Park J, Lee Y, Hong J, et al. Tactile-direction-sensitive and stretchable electronic skins based on human-skin-inspired interlocked microstructures. ACS Nano, 2014, 8: 12020–12029
Park J, Lee Y, Hong J, et al. Giant tunneling piezoresistance of composite elastomers with interlocked microdome arrays for ultrasensitive and multimodal electronic skins. ACS Nano, 2014, 8: 4689–4697
Yeom C, Chen K, Kiriya D, et al. Large-area compliant tactile sensors using printed carbon nanotube active-matrix backplanes. Adv Mater, 2015, 27: 1561–1566
Hou C, Wang H, Zhang Q, et al. Highly conductive, flexible, and compressible all-graphene passive electronic skin for sensing human touch. Adv Mater, 2014, 26: 5018–5024
Zhu B, Niu Z, Wang H, et al. Microstructured graphene arrays for highly sensitive flexible tactile sensors. Small, 2014, 10: 3625–3631
Tian H, Shu Y, Wang XF, et al. A graphene-based resistive pressure sensor with record-high sensitivity in a wide pressure range. Sci Rep, 2015, 5: 8603
Tang Y, Gong S, Chen Y, et al. Manufacturable conducting rubber ambers and stretchable conductors from copper nanowire aerogel monoliths. ACS Nano, 2014, 8: 5707–5714
Choong CL, Shim MB, Lee BS, et al. Highly stretchable resistive pressure sensors using a conductive elastomeric composite on a micropyramid array. Adv Mater, 2014, 26: 3451–3458
Zhong W, Liu Q, Wu Y, et al. A nanofiber based artificial electronic skin with high pressure sensitivity and 3D conformability. Nanoscale, 2016, 8: 12105–12112
Honda W, Harada S, Arie T, et al. Wearable, human-interactive, health-monitoring, wireless devices fabricated by macroscale printing techniques. Adv Funct Mater, 2014, 24: 3299–3304
Takei K, Yu Z, Zheng M, et al. Highly sensitive electronic whiskers based on patterned carbon nanotube and silver nanoparticle composite films. Proc Natl Acad Sci USA, 2014, 111: 1703–1707
Pang C, Lee GY, Kim TI, et at. A flexible and highly sensitive strain-gauge sensor using reversible interlocking of nanofibres. Nat Mater, 2012, 11: 795–801
Jian M, Xia K, Wang Q, et al. Flexible and highly sensitive pressure sensors based on bionic hierarchical structures. Adv Funct Mater, 2017, 27: 1606066
Sheng L, Liang Y, Jiang L, et al. Bubble-decorated honeycomblike graphene film as ultrahigh sensitivity pressure sensors. Adv Funct Mater, 2015, 25: 6545–6551
Wang X, Li T, Adams J, et al. Transparent, stretchable, carbonnanotube-inlaid conductors enabled by standard replication technology for capacitive pressure, strain and touch sensors. J Mater Chem A, 2013, 1: 3580
Li T, Luo H, Qin L, et al. Flexible capacitive tactile sensor based on micropatterned dielectric layer. Small, 2016, 12: 5042–5048
Zang Y, Zhang F, Huang D, et al. Flexible suspended gate organic thin-film transistors for ultra-sensitive pressure detection. Nat Commun, 2015, 6: 6269
Tien NT, Jeon S, Kim DI, et al. A flexible bimodal sensor array for simultaneous sensing of pressure and temperature. Adv Mater, 2014, 26: 796–804
Tien NT, Trung TQ, Seoul YG, et al. Physically responsive fieldeffect transistors with giant electromechanical coupling induced by nanocomposite gate dielectrics. ACS Nano, 2011, 5: 7069–7076
Zhang F, Zang Y, Huang D, et al. Flexible and self-powered temperature-pressure dual-parameter sensors using microstructure-frame-supported organic thermoelectric materials. Nat Commun, 2015, 6: 8356
Yang Y, Lin ZH, Hou T, et al. Nanowire-composite based flexible thermoelectric nanogenerators and self-powered temperature sensors. Nano Res, 2012, 5: 888–895
Tien NT, Seol YG, Dao LHA, et al. Utilizing highly crystalline pyroelectric material as functional gate dielectric in organic thinfilm transistors. Adv Mater, 2009, 21: 910–915
Jeon J, Lee HBR, Bao Z. Flexible wireless temperature sensors based on Ni microparticle-filled binary polymer composites. Adv Mater, 2013, 25: 850–855
Kim DH, Lu N, Ma R, et al. Epidermal electronics. Science, 2011, 333: 838–843
Yeo WH, Kim YS, Lee J, et al. Multifunctional epidermal electronics printed directly onto the skin. Adv Mater, 2013, 25: 2773–2778
Son D, Lee J, Qiao S, et al. Multifunctional wearable devices for diagnosis and therapy of movement disorders. Nat Nanotech, 2014, 9: 397–404
Webb RC, Bonifas AP, Behnaz A, et al. Ultrathin conformal devices for precise and continuous thermal characterization of human skin. Nat Mater, 2013, 12: 938–944
Feteira A. Negative temperature coefficient resistance (NTCR) ceramic thermistors: an industrial perspective. J Am Ceramic Soc, 2009, 92: 967–983
Huang CC, Kao ZK, Liao YC. Flexible miniaturized nickel oxide thermistor arrays via inkjet printing technology. ACS Appl Mater Interfaces, 2013, 5: 12954–12959
Honda W, Harada S, Ishida S, et al. High-performance, mechanically flexible, and vertically integrated 3D Carbon nanotube and InGaZnO complementary circuits with a temperature sensor. Adv Mater, 2015, 27: 4674–4680
Matzeu G, Pucci A, Savi S, et al. A temperature sensor based on a MWCNT/SEBS nanocomposite. Sensors Actuators A-Phys, 2012, 178: 94–99
Trung TQ, Ramasundaram S, Hong SW, et al. Flexible and transparent nanocomposite of reduced graphene oxide and P (VDF-TrFE) copolymer for high thermal responsivity in a fieldeffect transistor. Adv Funct Mater, 2014, 24: 3438–3445
Yang J, Wei D, Tang L, et al. Wearable temperature sensor based on graphene nanowalls. RSC Adv, 2015, 5: 25609–25615
Kim J, Lee M, Shim HJ, et al. Stretchable silicon nanoribbon electronics for skin prosthesis. Nat Commun, 2014, 5: 5747
Gao L, Zhang Y, Malyarchuk V, et al. Epidermal photonic devices for quantitative imaging of temperature and thermal transport characteristics of the skin. Nat Commun, 2014, 5: 4938
Wu X, Ma Y, Zhang G, et al. Thermally stable, biocompatible, and flexible organic field-effect transistors and their application in temperature sensing arrays for artificial skin. Adv Funct Mater, 2015, 25: 2138–2146
Kolpakov SA, Gordon NT, Mou C, et al. Toward a new generation of photonic humidity sensors. Sensors, 2014, 14: 3986–4013
Kim SY, Park S, Park HW, et al. Highly sensitive and multimodal all-carbon skin sensors capable of simultaneously detecting tactile and biological stimuli. Adv Mater, 2015, 27: 4178–4185
Yu HW, Kim HK, Kim T, et al. Self-powered humidity sensor based on graphene oxide composite film intercalated by poly (sodium 4-styrenesulfonate). ACS Appl Mater Interfaces, 2014, 6: 8320–8326
Han JW, Kim B, Li J, et al. Carbon nanotube based humidity sensor on cellulose paper. J Phys Chem C, 2012, 116: 22094–22097
Hwang SH, Kang D, Ruoff RS, et al. Poly(vinyl alcohol) reinforced and toughened with poly(dopamine)-treated graphene oxide, and its use for humidity sensing. ACS Nano, 2014, 8: 6739–6747
Qi H, Liu J, Deng Y, et al. Cellulose fibres with carbon nanotube networks for water sensing. J Mater Chem A, 2014, 2: 5541–5547
Wang Z, Xiao Y, Cui X, et al. Humidity-sensing properties of urchinlike CuO nanostructures modified by reduced graphene oxide. ACS Appl Mater Interfaces, 2014, 6: 3888–3895
Alwis L, Sun T, Grattan KTV. Optical fibre-based sensor technology for humidity and moisture measurement: review of recent progress. Measurement, 2013, 46: 4052–4074
Sheng L, Dajing C, Yuquan C. A surface acoustic wave humidity sensor with high sensitivity based on electrospun MWCNT/Nafion nanofiber films. Nanotechnology, 2011, 22: 265504
Hsueh HT, Hsueh TJ, Chang SJ, et al. A flexible ZnO nanowirebased humidity sensor. IEEE Trans NanoTech, 2012, 11: 520–525
Borini S, White R, Wei D, et al. Ultrafast graphene oxide humidity sensors. ACS Nano, 2013, 7: 11166–11173
Cheng H, Hu Y, Zhao F, et al. Moisture-activated torsional graphene-fiber motor. Adv Mater, 2014, 26: 2909–2913
Zhao F, Wang L, Zhao Y, et al. Graphene oxide nanoribbon assembly toward moisture-powered information storage. Adv Mater, 2017, 29: 1604972
Cheng H, Liu J, Zhao Y, et al. Graphene fibers with predetermined deformation as moisture-triggered actuators and robots. Angew Chem Int Ed, 2013, 52: 10482–10486
He S, Chen P, Qiu L, et al. A mechanically actuating carbonnanotube fiber in response to water and moisture. Angew Chem Int Ed, 2015, 54: 14880–14884
Vigolo B. Macroscopic fibers and ribbons of oriented carbon nanotubes. Science, 2000, 290: 1331–1334
Ericson LM, Fan H, Peng H, et al. Macroscopic, neat, singlewalled carbon nanotube fibers. Science, 2004, 305: 1447–1450
Behabtu N, Young CC, Tsentalovich DE, et al. Strong, light, multifunctional fibers of carbon nanotubes with ultrahigh conductivity. Science, 2013, 339: 182–186
Jiang K, Li Q, Fan S. Nanotechnology: spinning continuous carbon nanotube yarns. Nature, 2002, 419: 801–801
Zhang M, Atkinson KR, Baughman RH. Multifunctional carbon nanotube yarns by downsizing an ancient technology. Science, 2004, 306: 1358–1361
Zhong XH, Li YL, Liu YK, et al. Continuous multilayered carbon nanotube yarns. Adv Mater, 2010, 22: 692–696
Wang JN, Luo XG, Wu T, et al. High-strength carbon nanotube fibre-like ribbon with high ductility and high electrical conductivity. Nat Commun, 2014, 5: 3848
Zhang Y, Zou G, Doorn SK, et al. Tailoring the morphology of carbon nanotube arrays: from spinnable forests to undulating foams. ACS Nano, 2009, 3: 2157–2162
Zhang X, Li Q, Tu Y, et al. Strong carbon-nanotube fibers spun from long carbon-nanotube arrays. Small, 2007, 3: 244–248
Koziol K, Vilatela J, Moisala A, et al. High-performance carbon nanotube fiber. Science, 2007, 318: 1892–1895
Xu Z, Sun H, Zhao X, et al. Ultrastrong fibers assembled from giant graphene oxide sheets. Adv Mater, 2013, 25: 188–193
Xu Z, Gao C. Graphene chiral liquid crystals and macroscopic assembled fibres. Nat Commun, 2011, 2: 571
Hu C, Zhao Y, Cheng H, et al. Graphene microtubings: controlled fabrication and site-specific functionalization. Nano Lett, 2012, 12: 5879–5884
Cruz-Silva R, Morelos-Gomez A, Kim HI, et al. Super-stretchable graphene oxide macroscopic fibers with outstanding knotability fabricated by dry film scrolling. ACS Nano, 2014, 8: 5959–5967
Li X, Zhao T, Chen Q, et al. Flexible all solid-state supercapacitors based on chemical vapor deposition derived graphene fibers. Phys Chem Chem Phys, 2013, 15: 17752–17757
Chen T, Dai L. Macroscopic graphene fibers directly assembled from CVD-grown fiber-shaped hollow graphene tubes. Angew Chem Int Ed, 2015, 54: 14947–14950
Li M, Zhang X, Wang X, et al. Ultrastrong graphene-based fibers with increased elongation. Nano Lett, 2016, 16: 6511–6515
Xin G, Yao T, Sun H, et al. Highly thermally conductive and mechanically strong graphene fibers. Science, 2015, 349: 1083–1087
Sun H, You X, Deng J, et al. Novel graphene/carbon nanotube composite fibers for efficient wire-shaped miniature energy devices. Adv Mater, 2014, 26: 2868–2873
Shang Y, Hua C, Xu W, et al. Meter-long spiral carbon nanotube fibers show ultrauniformity and flexibility. Nano Lett, 2016, 16: 1768–1775
Hua C, Shang Y, Li X, et al. Helical graphene oxide fibers as a stretchable sensor and an electrocapillary sucker. Nanoscale, 2016, 8: 10659–10668
Zhao F, Zhao Y, Cheng H, et al. A graphene fibriform responsor for sensing heat, humidity, and mechanical changes. Angew Chem Int Ed, 2015, 54: 14951–14955
Zhong J, Zhong Q, Hu Q, et al. Stretchable self-powered fiberbased strain sensor. Adv Funct Mater, 2015, 25: 1798–1803
Cheng Y, Wang R, Sun J, et al. A stretchable and highly sensitive graphene-based fiber for sensing tensile strain, bending, and torsion. Adv Mater, 2015, 27: 7365–7371
Yuan W, Zhou Q, Li Y, et al. Small and light strain sensors based on graphene coated human hairs. Nanoscale, 2015, 7: 16361–16365
Zhang M, Wang C, Wang Q, et al. Sheath-core graphite/silk fiber made by dry-meyer-rod-coating for wearable strain sensors. ACS Appl Mater Interfaces, 2016, 8: 20894–20899
Tai Y, Lubineau G. Double-twisted conductive smart threads comprising a homogeneously and a gradient-coated thread for multidimensional flexible pressure-sensing devices. Adv Funct Mater, 2016, 26: 4078–4084
Qi H, Schulz B, Vad T, et al. Novel carbon nanotube/cellulose composite fibers as multifunctional materials. ACS Appl Mater Interfaces, 2015, 7: 22404–22412
Wu Z, Chen Z, Du X, et al. Transparent, conductive carbon nanotube films. Science, 2004, 305: 1273–1276
Dan B, Irvin GC, Pasquali M. Continuous and scalable fabrication of transparent conducting carbon nanotube films. ACS Nano, 2009, 3: 835–843
Hellstrom SL, Lee HW, Bao Z. Polymer-assisted direct deposition of uniform carbon nanotube bundle networks for high performance transparent electrodes. ACS Nano, 2009, 3: 1423–1430
Tenent RC, Barnes TM, Bergeson JD, et al. Ultrasmooth, largearea, high-uniformity, conductive transparent single-walled-carbon-nanotube films for photovoltaics produced by ultrasonic spraying. Adv Mater, 2009, 21: 3210–3216
Sreekumar TV, Liu T, Kumar S, et al. Single-wall carbon nanotube films. Chem Mater, 2003, 15: 175–178
Okimoto H, Takenobu T, Yanagi K, et al. Tunable carbon nanotube thin-film transistors produced exclusively via inkjet printing. Adv Mater, 2010, 22: 3981–3986
Shim BS, Zhu J, Jan E, et al. Transparent conductors from layerby-layer assembled swnt films: importance of mechanical properties and a new figure of merit. ACS Nano, 2010, 4: 3725–3734
Wang X, Li G, Liu R, et al. Reproducible layer-by-layer exfoliation for free-standing ultrathin films of single-walled carbon nanotubes. J Mater Chem, 2012, 22: 21824
Lee YD, Cho WS, Kim YC, et al. Field emission of ribonucleic acid-carbon nanotube films prepared by electrophoretic deposition. Carbon, 2012, 50: 845–850
Ma W, Song L, Yang R, et al. Directly synthesized strong, highly conducting, transparent single-walled carbon nanotube films. Nano Lett, 2007, 7: 2307–2311
Zhang M, Fang S, Zakhidov AA, et al. Strong, transparent, multifunctional, carbon nanotube sheets. Science, 2005, 309: 1215–1219
Feng C, Liu K, Wu JS, et al. Flexible, stretchable, transparent conducting films made from superaligned carbon nanotubes. Adv Funct Mater, 2010, 20: 885–891
Jiang K, Wang J, Li Q, et al. Superaligned carbon nanotube arrays, films, and yarns: a road to applications. Adv Mater, 2011, 23: 1154–1161
Pint CL, Xu YQ, Pasquali M, et al. Formation of highly dense aligned ribbons and transparent films of single-walled carbon nanotubes directly from carpets. ACS Nano, 2008, 2: 1871–1878
Wang D, Song P, Liu C, et al. Highly oriented carbon nanotube papers made of aligned carbon nanotubes. Nanotechnology, 2008, 19: 075609
Dikin DA, Stankovich S, Zimney EJ, et al. Preparation and characterization of graphene oxide paper. Nature, 2007, 448: 457–460
Jeon HG, Huh YH, Yun SH, et al. Improved homogeneity and surface coverage of graphene oxide layers fabricated by horizontal-dip-coating for solution-processable organic semiconducting devices. J Mater Chem C, 2014, 2: 2622
Hempel M, Nezich D, Kong J, et al. A novel class of strain gauges based on layered percolative films of 2D materials. Nano Lett, 2012, 12: 5714–5718
Wang X, Xiong Z, Liu Z, et al. Exfoliation at the liquid/air interface to assemble reduced graphene oxide ultrathin films for a flexible noncontact sensing device. Adv Mater, 2015, 27: 1370–1375
Li X, Sun P, Fan L, et al. Multifunctional graphene woven fabrics. Sci Rep, 2012, 2: 395
Shi E, Li H, Yang L, et al. Carbon nanotube network embroidered graphene films for monolithic all-carbon electronics. Adv Mater, 2015, 27: 682–688
Guo Y, Di C, Liu H, et al. General route toward patterning of graphene oxide by a combination of wettability modulation and spin-coating. ACS Nano, 2010, 4: 5749–5754
Liu Z, Li Z, Xu Z, et al. Wet-spun continuous graphene films. Chem Mater, 2014, 26: 6786–6795
Chen C, Yang QH, Yang Y, et al. Self-assembled free-standing graphite oxide membrane. Adv Mater, 2009, 21: 3007–3011
Shao JJ, Lv W, Yang QH. Self-assembly of graphene oxide at interfaces. Adv Mater, 2014, 26: 5586–5612
Li X, Cai W, An J, et al. Large-area synthesis of high-quality and uniform graphene films on copper foils. Science, 2009, 324: 1312–1314
Xia K, Artyukhov VI, Sun L, et al. Growth of large-area aligned pentagonal graphene domains on high-index copper surfaces. Nano Res, 2016, 9: 2182–2189
Kim KS, Zhao Y, Jang H, et al. Large-scale pattern growth of graphene films for stretchable transparent electrodes. Nature, 2009, 457: 706–710
Chen XD, Chen Z, Jiang WS, et al. Fast growth and broad applications of 25-inch uniform graphene glass. Adv Mater, 2017, 29: 1603428
Chen Z, Guan B, Chen X, et al. Fast and uniform growth of graphene glass using confined-flow chemical vapor deposition and its unique applications. Nano Res, 2016, 9: 3048–3055
Bae S, Kim H, Lee Y, et al. Roll-to-roll production of 30-inch graphene films for transparent electrodes. Nat Nanotech, 2010, 5: 574–578
Lin J, Peng Z, Liu Y, et al. Laser-induced porous graphene films from commercial polymers. Nat Commun, 2014, 5: 5714
Huang ZD, Zhang B, Oh SW, et al. Self-assembled reduced graphene oxide/carbon nanotube thin films as electrodes for supercapacitors. J Mater Chem, 2012, 22: 3591
Shao JJ, Lv W, Guo Q, et al. Hybridization of graphene oxide and carbon nanotubes at the liquid/air interface. Chem Commun, 2012, 48: 3706–3708
Yan Z, Peng Z, Casillas G, et al. Rebar graphene. ACS Nano, 2014, 8: 5061–5068
Zhang Y, Sheehan CJ, Zhai J, et al. Polymer-embedded carbon nanotube ribbons for stretchable conductors. Adv Mater, 2010, 22: 3027–3031
Guo FM, Cui X, Wang KL, et al. Stretchable and compressible strain sensors based on carbon nanotube meshes. Nanoscale, 2016, 8: 19352–19358
Harada S, Honda W, Arie T, et al. Fully printed, highly sensitive multifunctional artificial electronic whisker arrays integrated with strain and temperature sensors. ACS Nano, 2014, 8: 3921–3927
Harada S, Kanao K, Yamamoto Y, et al. Fully printed flexible fingerprint-like three-axis tactile and slip force and temperature sensors for artificial skin. ACS Nano, 2014, 8: 12851–12857
Liu Q, Chen J, Li Y, et al. High-performance strain sensors with fish-scale-like graphene-sensing layers for full-range detection of human motions. ACS Nano, 2016, 10: 7901–7906
Wang Y, Yang R, Shi Z, et al. Super-elastic graphene ripples for flexible strain sensors. ACS Nano, 2011, 5: 3645–3650
Chen S, Wei Y, Yuan X, et al. A highly stretchable strain sensor based on a graphene/silver nanoparticle synergic conductive network and a sandwich structure. J Mater Chem C, 2016, 4: 4304–4311
Boland CS, Khan U, Backes C, et al. Sensitive, high-strain, highrate bodily motion sensors based on graphene-rubber composites. ACS Nano, 2014, 8: 8819–8830
Lu N, Lu C, Yang S, et al. Highly sensitive skin-mountable strain gauges based entirely on elastomers. Adv Funct Mater, 2012, 22: 4044–4050
Wang Q, Jian M, Wang C, et al. Carbonized silk nanofiber membrane for transparent and sensitive electronic skin. Adv Funct Mater, 2017, 27: 1605657
Wang DY, Tao LQ, Liu Y, et al. High performance flexible strain sensor based on self-locked overlapping graphene sheets. Nanoscale, 2016, 8: 20090–20095
Tao LQ, Tian H, Liu Y, et al. An intelligent artificial throat with sound-sensing ability based on laser induced graphene. Nat Commun, 2017, 8: 14579
Bryning MB, Milkie DE, Islam MF, et al. Carbon nanotube aerogels. Adv Mater, 2007, 19: 661–664
Gutierrez MC, Hortiguela MJ, Amarilla JM, et al. Macroporous 3D architectures of self-assembled MWCNT surface decorated with Pt nanoparticles as anodes for a direct methanol fuel cell. J Phys Chem C, 2007, 111: 5557–5560
Xie X, Ye M, Hu L, et al. Carbon nanotube-coated macroporous sponge for microbial fuel cell electrodes. Energ Environ Sci, 2012, 5: 5265–5270
Hata K, Futaba DN, Mizuno K, et al. Water-assisted highly efficient synthesis of impurity-free single-walled carbon nanotubes. Science, 2004, 306: 1362–1364
Tsuji T, Hata K, Futaba DN, et al. Unexpected efficient synthesis of millimeter-scale single-wall carbon nanotube forests using a sputtered MgO catalyst underlayer enabled by a simple treatment process. J Am Chem Soc, 2016, 138: 16608–16611
Ren ZF, Huang ZP, Xu JW, et al. Synthesis of large arrays of wellaligned carbon nanotubes on glass. Science, 1998, 282: 1105–1107
Fan S, Chapline MG, Franklin NR, et al. Self-oriented regular arrays of carbon nanotubes and their field emission properties. Science, 1999, 283: 512–514
Xu Y, Sheng K, Li C, et al. Self-assembled graphene hydrogelvia a one-step hydrothermal process. ACS Nano, 2010, 4: 4324–4330
Hu H, Zhao Z, Wan W, et al. Ultralight and highly compressible graphene aerogels. Adv Mater, 2013, 25: 2219–2223
Niu Z, Liu L, Zhang L, et al. A universal strategy to prepare functional porous graphene hybrid architectures. Adv Mater, 2014, 26: 3681–3687
Qiu L, Liu JZ, Chang SLY, et al. Biomimetic superelastic graphene-based cellular monoliths. Nat Commun, 2012, 3: 1241
Yang ZY, Jin LJ, Lu GQ, et al. Sponge-templated preparation of high surface area graphene with ultrahigh capacitive deionization performance. Adv Funct Mater, 2014, 24: 3917–3925
Chen Z, Ren W, Gao L, et al. Three-dimensional flexible and conductive interconnected graphene networks grown by chemical vapour deposition. Nat Mater, 2011, 10: 424–428
Peng Q, Li Y, He X, et al. Graphene nanoribbon aerogels unzipped from carbon nanotube sponges. Adv Mater, 2014, 26: 3241–3247
Dong X, Ma Y, Zhu G, et al. Synthesis of graphene-carbon nanotube hybrid foam and its use as a novel three-dimensional electrode for electrochemical sensing. J Mater Chem, 2012, 22: 17044
Kim ND, Li Y, Wang G, et al. Growth and transfer of seamless 3D graphene-nanotube hybrids. Nano Lett, 2016, 16: 1287–1292
Lin J, Zhang C, Yan Z, et al. 3-dimensional graphene carbon nanotube carpet-based microsupercapacitors with high electrochemical performance. Nano Lett, 2013, 13: 72–78
Tang C, Zhang Q, Zhao MQ, et al. Resilient aligned carbon nanotube/graphene sandwiches for robust mechanical energy storage. Nano Energ, 2014, 7: 161–169
Wang W, Guo S, Penchev M, et al. Three dimensional few layer graphene and carbon nanotube foam architectures for high fidelity supercapacitors. Nano Energ, 2013, 2: 294–303
Zhang W, Xie H, Zhang R, et al. Synthesis of three-dimensional carbon nanotube/graphene hybrid materials by a two-step chemical vapor deposition process. Carbon, 2015, 86: 358–362
Boland CS, Khan U, Ryan G, et al. Sensitive electromechanical sensors using viscoelastic graphene-polymer nanocomposites. Science, 2016, 354: 1257–1260
Chen H, Su Z, Song Y, et al. Omnidirectional bending and pressure sensor based on stretchable CNT-PU sponge. Adv Funct Mater, 2017, 27: 1604434
Qiu L, Bulut Coskun M, Tang Y, et al. Ultrafast dynamic piezoresistive response of graphene-based cellular elastomers. Adv Mater, 2016, 28: 194–200
Yao HB, Ge J, Wang CF, et al. A flexible and highly pressuresensitive graphene-polyurethane sponge based on fractured microstructure design. Adv Mater, 2013, 25: 6692–6698
Zhao W, Li Y, Wu S, et al. Highly stable carbon nanotube/polyaniline porous network for multifunctional applications. ACS Appl Mater Interfaces, 2016, 8: 34027–34033
Wang M, Anoshkin IV, Nasibulin AG, et al. Modifying native nanocellulose aerogels with carbon nanotubes for mechanoresponsive conductivity and pressure sensing. Adv Mater, 2013, 25: 2428–2432
Jeong YR, Park H, Jin SW, et al. Highly stretchable and sensitive strain sensors using fragmentized graphene foam. Adv Funct Mater, 2015, 25: 4228–4236
Zhang P, Lv L, Cheng Z, et al. Superelastic, macroporous polystyrene-mediated graphene aerogels for active pressure sensing. Chem Asian J, 2016, 11: 1071–1075
Lin Y, Liu S, Chen S, et al. A highly stretchable and sensitive strain sensor based on graphene-elastomer composites with a novel double-interconnected network. J Mater Chem C, 2016, 4: 6345–6352
Si Y, Wang X, Yan C, et al. Ultralight biomass-derived carbonaceous nanofibrous aerogels with superelasticity and high pressure-sensitivity. Adv Mater, 2016, 28: 9512–9518
Bendi R, Bhavanasi V, Parida K, et al. Self-powered graphene thermistor. Nano Energ, 2016, 26: 586–594
Fuh YK, Kuo CC, Huang ZM, et al. A transparent and flexible graphene-piezoelectric fiber generator. Small, 2016, 12: 1875–1881
Wang X, Yang B, Liu J, et al. A flexible triboelectric-piezoelectric hybrid nanogenerator based on P(VDF-TrFE) nanofibers and PDMS/MWCNT for wearable devices. Sci Rep, 2016, 6: 36409
Guo H, Yeh MH, Zi Y, et al. Ultralight cut-paper-based selfcharging power unit for self-powered portable electronic and medical systems. ACS Nano, 2017, 11: 4475–4482
Hwang BU, Lee JH, Trung TQ, et al. Transparent stretchable selfpowered patchable sensor platform with ultrasensitive recognition of human activities. ACS Nano, 2015, 9: 8801–8810
Luo J, Fan FR, Zhou T, et al. Ultrasensitive self-powered pressure sensing system. Extreme Mech Lett, 2015, 2: 28–36
Acknowledgements
This work was supported by the National Natural Science Foundation of China (51672153, 51422204 and 51372132) and the National Key Basic Research and Development Program (2016YFA0200103 and 2013CB228506).
Author information
Authors and Affiliations
Corresponding author
Additional information
Muqiang Jian received his BS degree in chemical engineering and technology from Northwestern Polytechnical University in 2013. Now he is a PhD candidate in Prof. Yingying Zhang’s group at the Department of Chemistry and Center for Nano and Micro Mechanics of Tsinghua University. His current research is the synthesis of CNTs and their applications in flexible sensors. Yingying
Yingying Zhang received her PhD degree from Peking University in 2007. She then worked as a postdoctoral fellow at Los Alamos National Laboratory, US (2008–2011). Currently, she is an associate professor at the Department of Chemistry and Center for Nano and Micro Mechanics of Tsinghua University. Her research interest is the synthesis of carbon materials and their applications in flexible sensors and wearable electronics.
Rights and permissions
About this article
Cite this article
Jian, M., Wang, C., Wang, Q. et al. Advanced carbon materials for flexible and wearable sensors. Sci. China Mater. 60, 1026–1062 (2017). https://doi.org/10.1007/s40843-017-9077-x
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s40843-017-9077-x