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

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 μm) exhibits superior skin conformity,

SUBMITTER: Lee S 

PROVIDER: S-EPMC6581939 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature