Flexible electronic eardrum
- 152 Downloads
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.
Keywordselectronic eardrum (EE) pressure sensor carbon nanotube voice recognition
Unable to display preview. Download preview PDF.
- Pan, L. J.; Chortos, A.; Yu, G. H.; Wang, Y. Q.; Isaacson, S.; Allen, R.; Shi, Y.; Dauskardt, R.; Bao, Z. An ultra-sensitive resistive pressure sensor based on hollow-sphere microstructure induced elasticity in conducting polymer film. Nat. Commun. 2014, 5, 3002.Google Scholar
- Dagdeviren, C.; Su, Y. W.; Joe, P.; Yona, R.; Liu, Y. H.; Kim, Y. S.; Huang, Y. A.; Damadoran, A. R.; Xia, J.; Martin, L. W. et al. Conformable amplified lead zirconate titanate sensors with enhanced piezoelectric response for cutaneous pressure monitoring. Nat. Commun. 2014, 5, 4496.CrossRefGoogle Scholar
- Boersma, P.; Weenink, D. PRAAT: Doing phonetics by computer. www.praat.org (accessed Oct 2, 2016).Google Scholar