Journal
NANOTECHNOLOGY
Volume 29, Issue 7, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/aaa2b9
Keywords
piezoelectric-enzymatic reaction; mimicking taste bud; e-skin; self-powering; wearable
Funding
- National Natural Science Foundation of China [11674048]
- Fundamental Research Funds for the Central Universities [N160502002]
- Liaoning BaiQianWan Talents Program [2014921017]
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A new self-powered wearable gustation electronic skin for mimicking taste buds has been realized based on enzyme-modified/ZnO nanowire arrays on patterned-electrode flexible substrate. The e-skin can actively taste beverages or fruits without any external electric power. Through the piezoelectric-enzymatic reaction coupling effect, the nanowires can harvest the mechanical energy of body movement and output piezoelectric signal. The piezoelectric output is significantly dependent on the concentration of target analyte. The response for detecting 2 x 10(-2) M ascorbic acid (ascorbate acid oxidase@ZnO) is up to 171.747, and the selectivity is high. The response for detecting 50% alcohol (alcohol oxidase@ZnO) is up to 45.867. Our results provide a new research direction for the development of multifunctional e-skin and expand the study scope for self-powered bionic systems.
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