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An ultrathin conformable vibration-responsive electronic skin for quantitative vocal recognition

Title
An ultrathin conformable vibration-responsive electronic skin for quantitative vocal recognition
Authors
LEE, SIYOUNGJunsoo KimInyeol YunBAE, GEUNYEOLDAEGUN, KIMSANGSIK, PARKIl-Min YiMOON, WON KYUCHUNG, YOONYOUNGCHO, KIL WON
Date Issued
18-Jun-2019
Publisher
NATURE PUBLISHING GROUP
Abstract
Flexible and skin-attachable vibration sensors have been studied for use as wearable voice-recognition electronics. However, the development of vibration sensors to recognize the human voice accurately with a flat frequency response, a high sensitivity, and a flexible/conformable form factor has proved a major challenge. Here, we present an ultrathin, conformable, and vibration-responsive electronic skin that detects skin acceleration, which is highly and linearly correlated with voice pressure. This device consists of a crosslinked ultrathin polymer film and a hole-patterned diaphragm structure, and senses voices quantitatively with an outstanding sensitivity of 5.5 V Pa-1 over the voice frequency range. Moreover, this ultrathin device (<5 mu m) exhibits superior skin conformity, which enables exact voice recognition because it eliminates vibrational distortion on rough and curved skin surfaces. Our device is suitable for several promising voice-recognition applications, such as security authentication, remote control systems and vocal healthcare.
Keywords
VOICE; SENSORS; GRAPHENE; SU-8; TEMPERATURE
URI
http://oasis.postech.ac.kr/handle/2014.oak/98817
ISSN
2041-1723
Article Type
Article
Citation
NATURE COMMUNICATIONS, vol. 10, no. 1, 2019-06-18
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 CHO, KIL WON
Dept. of Chemical Enginrg
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