Enhanced Sensitivity of Patterned Graphene Strain Sensors Used for Monitoring Subtle Human Body Motions.

Citation data:

ACS applied materials & interfaces, ISSN: 1944-8252, Vol: 9, Issue: 12, Page: 11176-11183

Publication Year:
2017
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PMID:
28233491
DOI:
10.1021/acsami.7b01551
Author(s):
Lee, Sang Woo; Park, Jung Jin; Park, Byung Hyun; Mun, Sung Cik; Park, Yong Tae; Liao, Kin; Seo, Tae Seok; Hyun, Woo Jin; Park, O Ok
Publisher(s):
American Chemical Society (ACS)
Tags:
Materials Science
article description
With the growth of the wearable electronics industry, structural modifications of sensing materials have been widely attempted to improve the sensitivity of sensors. Herein, we demonstrate patterned graphene strain sensors, which can monitor small-scale motions by using the simple, scalable, and solution-processable method. The electrical properties of the sensors are easily tuned via repetition of the layer-by-layer assembly, leading to increment of thickness of the conducting layers. In contrast to nonpatterned sensors, the patterned sensors show enhanced sensitivity and the ability to distinguish subtle motions, such as similar phonations and 81 beats per minute of pulse rate.