Research Progress in Flexible Wearable Electronic Sensors
- Corresponding author: Li Fengyu, forrest@iccas.ac.cn Song Yanlin, ylsong@iccas.ac.cn
Citation:
Qian Xin, Su Meng, Li Fengyu, Song Yanlin. Research Progress in Flexible Wearable Electronic Sensors[J]. Acta Chimica Sinica,
;2016, 74(7): 565-575.
doi:
10.6023/A16030156
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(a) piezoresistivity, (b) capacitance, (c) piezoelectricity and (d) triboelectricity
Geometric pattern design: (a) Net-shaped structural design. (b) Noncoplanar mesh design. (c) Fractal design. (d) Use of elastic conductors
(a) Schematic structure of the device. (b) Band diagram of ZnS:Mn, which indicates the action mechanism of piezophotonic effect. (c) Dynamic pressure mapping of 2D planar and single-point models. (d) Signature recording and high-resolution pressure mapping
(a) Pressure-sensitive OFET with microstructured PDMS dielectric layer. (b) Flexible pixel-type capacitive pressure sensor array using a microstructured PDMS film as a dielectric layer. (c) Change in IDS of the OFET in response to pressure, which is proportional to the change in relative capacitive and exhibits a rapid response. (d) Device geometry for ultra-sensitive detection of acoustic wave
(a) Schematic illustration of inkjet printing of silver-nanoparticle patterns induced by the coffee-ring effect. (b) A general strategy to align a wide variety of NPs in one direction upon diverse substrates based on a sandwich-shaped assembly system. (c) A nonlithography strategy to fabricate nanoscale circuits by assembling conducting materials (e.g., AgNPs) on inkjet-printing patterned substrates through a space-confined assembly system. (d) The schematic illustration of the micro/nano curve array printed to flexible electronic devices and adopted to multianalysis for skin micromotion sensing
(a) Assembly of prepared layers, liquid metal injection, and formation of electrical contacts with the Ag NW sticker. (b) Optical images of the temperature array on the stretchable substrate attached onto the right palm where a heart-shaped cold water container (≈15 ℃) was positioned after stretching. The corresponding mapping of the temperature distribution via the measurement of the normalized drain current
(a) Schematic illustration to detect pulse on a human's neck with our microhair sensor. (b) Measure pulse waves of the radial artery. (c) Cross-sectional diagram of the microhair-structured sensor. The pyramid-shaped PDMS dielectric layer was placed between the two Au electrodes on PEN plastic substrates. The pressure sensor was subsequently added on a layer of microhair-structured biocompatible polymer(PDMS) to improve conformal contacts with skin
(a) The schematic illustration of the nanoparticle self-assembly process induced by pillar-patterned template. (b) The nanocurves array chips were attached at six selective positions on facial skin, which included the characteristic muscle groups. (c) 3D representation of PCA result shows a clear clustering of the eight different facial expressions as analytes
(a) The stretchable yarns are assembled by graphene nanoparticles dispersed solution and PVA solution. The highly sensitive RY sensor was capable of detecting small-scale motions in the throat and the chest. The NCRY sensor precisely detected large-scale motion. (b) The strain sensor fabricated from dry-spun carbon nanotube (CNT) fibers exhibited a remarkably high tolerance to tensile strains (greater than 900%) along the CNT longitudinal axis, as well as high sensitivity, a fast response time, and high durability. (c) When stretched, aligned single-walled carbon nanotube (SWCNT) thin films fracture into gaps and islands, and bundles bridging the gaps. This mechanism allows the films to act as strain sensors capable of measuring strains up to 280% (50 times more than conventional metal strain gauges)