@inproceedings{5ca58c5f96b444738e247a9230e0c78a,
title = "Micro-Dispensing of Graphene Oxide Based Capacitive Tactile Sensors for Human Pressure-Pulse Detection",
abstract = "This paper reports a novel capacitive pressure-pulse sensor array based on drop-dispensed graphene oxide (GO) sensing elements. The utilization of drop dispensing technology enables us a low cost, flexible and precise method to fabricate multiple capacitive sensing elements. The printed droplets volume (GO aqueous dispersion) were around 33.5 to 65.4 pL with droplet diameter ranging 40 to 50um. The size (i.e., footprint and dielectric thickness) of a sensing element can be controlled by the total GO dispersed. In this paper, we report on the fabrication process and preliminary characterization of these printed GO capacitive sensors. Thus far, we have shown that these sensors have a sensitivity of 10-3kPa-1, with a relative permittivity of the printed GO being 6 to 7 (measured at a frequency of 600kHz). We have also demonstrated that the printed sensing elements can be used for human pulse sensing, which means that these sensors could potentially be used in wearable electronics and healthcare applications.",
keywords = "drop dispensing, graphene oxide, human pulse sensing, tactile sensor",
author = "Kong, {Ka Wai} and Junhui Law and Meng Chen and Zan Suo and Boliang Jia and Roy, {Vellaisamy A.L.} and Chan, {Ho Yin} and Li, {Wen J.}",
note = "Publisher Copyright: {\textcopyright} 2018 IEEE.; 3rd International Conference on Manipulation, Automation and Robotics at Small Scales, MARSS 2018 ; Conference date: 04-07-2018 Through 08-07-2018",
year = "2018",
month = oct,
day = "3",
doi = "10.1109/MARSS.2018.8481149",
language = "English",
series = "MARSS 2018 - International Conference on Manipulation, Automation and Robotics at Small Scales",
editor = "Sergej Fatikow and Sinan Haliyo and Fumihito Arai and Albert Sill",
booktitle = "MARSS 2018 - International Conference on Manipulation, Automation and Robotics at Small Scales",
}
