Carbon-nanotube-based Spacer Fabric Pressure Sensors for Biological Signal Monitoring and the Evaluation of Sensing Capabilities

2021 ◽  
Vol 24 (2) ◽  
pp. 65-74
Author(s):  
Ha-yeong Yun ◽  
Sang-Un Kim ◽  
Joo-Yong Kim
Keyword(s):  
Carbon Nanotube ◽  
Pressure Sensors ◽  
Biological Signal ◽  
Spacer Fabric ◽  
Signal Monitoring

Ultrasensitive, flexible, and low-cost nanoporous piezoresistive composites for tactile pressure sensing

Nanoscale ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 2779-2786 ◽  
Author(s):  
Jing Li ◽  
Santiago Orrego ◽  
Junjie Pan ◽  
Peisheng He ◽  
Sung Hoon Kang
Keyword(s):  
Carbon Nanotube ◽  
Polymer Composites ◽  
Low Cost ◽  
Pressure Sensors ◽  
Nanoporous Carbon ◽  
Pressure Sensing ◽  
Etching Method ◽  
Piezoresistive Pressure Sensors

We report a facile sacrificial casting–etching method to synthesize nanoporous carbon nanotube/polymer composites for ultra-sensitive and low-cost piezoresistive pressure sensors.

scholarly journals Identification of the Design Parameters for a Spacer Fabric Pressure-Mapping Sensor

Proceedings ◽  
2021 ◽  
Vol 68 (1) ◽  
pp. 15
Author(s):  
Tianchen Shen ◽  
Samuel Pitou ◽  
Ryo Eguchi ◽  
Matthew Howard
Keyword(s):  
Empirical Study ◽  
Pressure Sensors ◽  
Design Parameters ◽  
Pressure Mapping ◽  
Spacer Fabric

This work presents an empirical study into the design of fabric pressure sensors, taking into account the electro-mechanical variability of spacer fabric. The saturation of the fabric sensor at high force levels is a major factor limiting the range of measurable pressures. In order to address this, experiments were carried out to investigate several methods of modifying the sensitivity characteristics through the layering and specifications of the textile sheets.

Extrusion printing of carbon nanotube-coated elastomer fiber with microstructures for flexible pressure sensors

2019 ◽  
Vol 299 ◽  
pp. 111625 ◽  
Author(s):  
Yang Gao ◽  
Mengdi Xu ◽  
Guohui Yu ◽  
Jianping Tan ◽  
Fuzhen Xuan
Keyword(s):  
Carbon Nanotube ◽  
Pressure Sensors ◽  
Extrusion Printing ◽  
Flexible Pressure Sensors

scholarly journals Highly-Sensitive Textile Pressure Sensors Enabled by Suspended-Type All Carbon Nanotube Fiber Transistor Architecture

Micromachines ◽  
2020 ◽  
Vol 11 (12) ◽  
pp. 1103
Author(s):  
Jae Sang Heo ◽  
Keon Woo Lee ◽  
Jun Ho Lee ◽  
Seung Beom Shin ◽  
Jeong Wan Jo ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Pressure Sensor ◽  
Pressure Range ◽  
Pressure Sensors ◽  
High Sensitivity ◽  
Low Pressure ◽  
Electronic Textiles ◽  
Carbon Nanotube Fiber ◽  
Cnt Fiber ◽  
Walled Carbon Nanotubes

Among various wearable health-monitoring electronics, electronic textiles (e-textiles) have been considered as an appropriate alternative for a convenient self-diagnosis approach. However, for the realization of the wearable e-textiles capable of detecting subtle human physiological signals, the low-sensing performances still remain as a challenge. In this study, a fiber transistor-type ultra-sensitive pressure sensor (FTPS) with a new architecture that is thread-like suspended dry-spun carbon nanotube (CNT) fiber source (S)/drain (D) electrodes is proposed as the first proof of concept for the detection of very low-pressure stimuli. As a result, the pressure sensor shows an ultra-high sensitivity of ~3050 Pa−1 and a response/recovery time of 258/114 ms in the very low-pressure range of <300 Pa as the fiber transistor was operated in the linear region (VDS = −0.1 V). Also, it was observed that the pressure-sensing characteristics are highly dependent on the contact pressure between the top CNT fiber S/D electrodes and the single-walled carbon nanotubes (SWCNTs) channel layer due to the air-gap made by the suspended S/D electrode fibers on the channel layers of fiber transistors. Furthermore, due to their remarkable sensitivity in the low-pressure range, an acoustic wave that has a very tiny pressure could be detected using the FTPS.

Tunable flexible capacitive pressure sensors using arrangement of polydimethylsiloxane micro-pyramids for bio-signal monitoring

2020 ◽  
Vol 314 ◽  
pp. 112251
Author(s):  
Eshwar Thouti ◽  
Atmakuru Nagaraju ◽  
Achu Chandran ◽  
P.V.B.S.S Prakash ◽  
P Shivanarayanamurthy ◽  
...  
Keyword(s):  
Pressure Sensors ◽  
Signal Monitoring

Carbon Nanotube Coated Fabric-Based Thin and Flexible Pressure Sensors with Ultra-Wide Sensing Range

2019 ◽  
Author(s):  
Sagar Doshi ◽  
Amit Chaudhari ◽  
Colleen Murray ◽  
Jill Higginson ◽  
Erik Thostenson
Keyword(s):  
Carbon Nanotube ◽  
Pressure Sensors ◽  
Sensing Range ◽  
Coated Fabric ◽  
Flexible Pressure Sensors
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