NDLI: Ultra-sensitive graphene strain sensor for sound signal acquisition and recognition

Content Provider	Springer Nature Link
Author	Wang, Yan Yang, Tingting Lao, Junchao Zhang, Rujing Zhang, Yangyang Zhu, Miao Li, Xiao Zang, Xiaobei Wang, Kunlin Yu, Wenjian Jin, Hu Wang, Li Zhu, Hongwei
Copyright Year	2014
Abstract	A wearable and high-precision sensor for sound signal acquisition and recognition was fabricated from thin films of specially designed graphene woven fabrics (GWFs). Upon being stretched, a high density of random cracks appears in the network, which decreases the current pathways, thereby increasing the resistance. Therefore, the film could act as a strain sensor on the human throat in order to measure one’s speech through muscle movement, regardless of whether or not a sound is produced. The ultra-high sensitivity allows for the realization of rapid and low-frequency speech sampling by extracting the signature characteristics of sound waves. In this study, representative signals of 26 English letters, typical Chinese characters and tones, and even phrases and sentences were tested, revealing obvious and characteristic changes in resistance. Furthermore, resistance changes of the graphene sensor responded perfectly with pre-recorded sounds. By combining artificial intelligence with digital signal processing, we expect that, in the future, this graphene sensor will be able to successfully negotiate complex acoustic systems and large quantities of audio data.
Starting Page	1627
Ending Page	1636
Page Count	10
File Format	PDF
ISSN	19980124
Journal	Nano Research
Volume Number	8
Issue Number	5
e-ISSN	19980000
Language	English
Publisher	Tsinghua University Press
Publisher Date	2015-01-15
Publisher Place	Beijing
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	graphene strain sensors sound detectors high sensitivity Nanotechnology Materials Science Atomic/Molecular Structure and Spectra Condensed Matter Physics Biotechnology Biomedicine general
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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