TY  - JOUR
AU  - Gu, Yang
AU  - Wang, Xuewen
AU  - Gu, Wen
AU  - Wu, Yongjin
AU  - Li, Tie
AU  - Zhang, Ting
PY  - 2017
TI  - Flexible electronic eardrum
JO  - Nano Research
SN  - 1998-0124
SP  - 2683
EP  - 2691
VL  - 10
IS  - 8
AB  - Flexible mechanosensors with a high sensitivity and fast response speed may advance the wearable and implantable applications of healthcare devices, such as real-time heart rate, pulse, and respiration monitoring. In this paper, we introduce a novel flexible electronic eardrum (EE) based on single-walled carbon nanotubes, poly-ethylene, and poly-dimethylsiloxane with micro-structured pyramid arrays. The EE device shows a high sensitivity, high signal-to-noise ratio (approximately 55 dB), and fast response time (76.9 μs) in detecting and recording sound within a frequency domain of 20–13, 000 Hz. The mechanism for sound detection is investigated and the sensitivity is determined using the micro-structure, thickness, and strain state. We also demonstrated that the device is able to distinguish human voices. This unprecedented performance of the flexible electronic eardrum has implications for many applications such as implantable acoustical bioelectronics and personal voice recognition.
UR  - https://doi.org/10.1007/s12274-017-1470-1
DO  - 10.1007/s12274-017-1470-1