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학술지 Highly Sensitive and Flexible Strain Sensors based on Patterned ITO Nanoparticle Channels
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저자
이도훈, 박종혁, 이종권, 허광, 이동진, 이예림, 이병양
발행일
201711
출처
Nanotechnology, v.28 no.49, pp.1-7
ISSN
0957-4484
출판사
Institute of Physics (IOP)
DOI
https://dx.doi.org/10.1088/1361-6528/aa9237
협약과제
17PB6300, 대면적 그래핀 기판을 이용한 저비용, 고품위의 III-V 나노와이어 발광소자 개발, 박종혁
초록
We demonstrate a highly sensitive and flexible bending strain sensor using tin-doped indium oxide (ITO) nanoparticles (NPs) assembled in line patterns on flexible substrates. By utilizing transparent ITO NPs without any surface modifications, we could produce strain sensors with adjustable gauge factors and optical transparency. We were able to control the dimensional and electrical properties of the sensors, such as channel height and resistance, by controlling the NP assembly speed. Furthermore, we were able to generate controlled gauge factor with values ranging from 18 to 157, which are higher than previous cases using metallic Cr NPs and Au NPs. The alignment of the ITO NPs in parallel lines resulted in low crosstalk between the transverse and longitudinal bending directions. Finally, our sensor showed high optical transmittance, up to ~93% at 500 nm wavelength, which is desirable for flexible electronic applications.
키워드
gauge factor, ITO, nanoparticle, strain sensor, tin-doped indium oxide
KSP 제안 키워드
Au nanoparticles(Au-NPs), Bending strain sensor, Channel height, Flexible electronics, Flexible strain sensors, Flexible substrate, Gauge Factor, Highly sensitive, ITO nanoparticles, Low crosstalk, Optical transmittance