A High‐Fidelity Skin‐Attachable Acoustic Sensor for Realizing Auditory Electronic Skin
SCIE
SCOPUS
- Title
- A High‐Fidelity Skin‐Attachable Acoustic Sensor for Realizing Auditory Electronic Skin
- Authors
- 이시영; Kim, Junsoo; 노하정; Kim, Woongji; 정세인; Moon, Wonkyu; Cho, Kilwon
- Date Issued
- 2022-05
- Publisher
- WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
- Abstract
- Wearable auditory sensors are critical in user-friendly sound-recognition systems for smart human-machine interaction and the Internet of Things. However, previously reported wearable sensors have limited sound-sensing quality as a consequence of a poor frequency response and a narrow acoustic-pressure range. Here, a skin-attachable acoustic sensor is presented that has higher sensing accuracy in wider auditory field than human ears, with flat frequency response (15-10 000 Hz) and a good range of linearity (29-134 dB(SPL)) as well as high conformality to flexible surfaces and human skin. This high sound-sensing quality is achieved by exploiting the low residual stress and high processability of polymer materials in a diaphragm structure designed using acousto-mechano-electric modeling. Thus, this acoustic sensor shows high acoustic fidelity by sensing human-audible sounds, even loud sounds and low-frequency sounds that human ears cannot detect without distorting them. The polymer-based ultrasmall (<9 mm(2)) and thin sensor maintains sound-detection quality on flexible substrates and in a wide temperature range (25 to 90 degrees C). The acoustic sensor shows a significant potential of auditory electronic skin, by recognizing voice successfully when the sensor attached on human skin is connected to a commercial mobile device running the latest artificial intelligence assistant.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/115844
- DOI
- 10.1002/adma.202109545
- ISSN
- 0935-9648
- Article Type
- Article
- Citation
- Advanced Materials, vol. 34, no. 21, page. 2109545, 2022-05
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- There are no files associated with this item.
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