Protrusion Microstructure-Induced Sensitivity Enhancement for Zinc Oxide–Carbon Nanotube Flexible Pressure Sensors

2021 ◽  
Author(s):  
Qi Huang ◽  
Yadong Jiang ◽  
Zaihua Duan ◽  
Zhen Yuan ◽  
Bohao Liu ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Carbon Nanotube ◽  
Pressure Sensors ◽  
Sensitivity Enhancement ◽  
Flexible Pressure Sensors

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

Solvent-free fabrication of multi-walled carbon nanotube based flexible pressure sensors for ultra-sensitive touch pad and electronic skin applications

RSC Advances ◽  
2016 ◽  
Vol 6 (98) ◽  
pp. 95836-95845 ◽  
Author(s):  
Parikshit Sahatiya ◽  
Sushmee Badhulika
Keyword(s):  
Carbon Nanotube ◽  
User Interface ◽  
Electronic Devices ◽  
Pressure Sensors ◽  
Solvent Free ◽  
Electronic Skin ◽  
Multi Walled Carbon Nanotube ◽  
Mechanical Pressing ◽  
Flexible Pressure Sensors

Schematic of the MWCNTs based ultrasensitive touch pad by novel rolling pin and pre-compaction mechanical pressing and its applicability as a user interface in modern electronic devices.

Flexible pressure sensors using highly-oriented and free-standing carbon nanotube sheets

Carbon ◽  
2018 ◽  
Vol 139 ◽  
pp. 586-592 ◽  
Author(s):  
Sungwoo Chun ◽  
Wonkyeong Son ◽  
Changsoon Choi
Keyword(s):  
Carbon Nanotube ◽  
Pressure Sensors ◽  
Free Standing ◽  
Flexible Pressure Sensors

scholarly journals Influence of the Porosity of Polymer Foams on the Performances of Capacitive Flexible Pressure Sensors

Sensors ◽  
2019 ◽  
Vol 19 (9) ◽  
pp. 1968 ◽  
Author(s):  
Sylvie Bilent ◽  
Thi Hong Nhung Dinh ◽  
Emile Martincic ◽  
Pierre-Yves Joubert
Keyword(s):  
Experimental Data ◽  
Linear Model ◽  
Dielectric Material ◽  
Pressure Sensors ◽  
Volume Ratio ◽  
Measurement Range ◽  
Polymer Foams ◽  
First Order ◽  
Non Linear ◽  
Flexible Pressure Sensors

This paper reports on the study of microporous polydimethylsiloxane (PDMS) foams as a highly deformable dielectric material used in the composition of flexible capacitive pressure sensors dedicated to wearable use. A fabrication process allowing the porosity of the foams to be adjusted was proposed and the fabricated foams were characterized. Then, elementary capacitive pressure sensors (15 × 15 mm2 square shaped electrodes) were elaborated with fabricated foams (5 mm or 10 mm thick) and were electromechanically characterized. Since the sensor responses under load are strongly non-linear, a behavioral non-linear model (first order exponential) was proposed, adjusted to the experimental data, and used to objectively estimate the sensor performances in terms of sensitivity and measurement range. The main conclusions of this study are that the porosity of the PDMS foams can be adjusted through the sugar:PDMS volume ratio and the size of sugar crystals used to fabricate the foams. Additionally, the porosity of the foams significantly modified the sensor performances. Indeed, compared to bulk PDMS sensors of the same size, the sensitivity of porous PDMS sensors could be multiplied by a factor up to 100 (the sensitivity is 0.14 %.kPa−1 for a bulk PDMS sensor and up to 13.7 %.kPa−1 for a porous PDMS sensor of the same dimensions), while the measurement range was reduced from a factor of 2 to 3 (from 594 kPa for a bulk PDMS sensor down to between 255 and 177 kPa for a PDMS foam sensor of the same dimensions, according to the porosity). This study opens the way to the design and fabrication of wearable flexible pressure sensors with adjustable performances through the control of the porosity of the fabricated PDMS foams.

Enhanced piezocapacitive response in zinc oxide tetrapod–poly(dimethylsiloxane) composite dielectric layer for flexible and ultrasensitive pressure sensor

Nanoscale ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 6076-6086
Author(s):  
Gen-Wen Hsieh ◽  
Shih-Rong Ling ◽  
Fan-Ting Hung ◽  
Pei-Hsiu Kao ◽  
Jian-Bin Liu
Keyword(s):  
Zinc Oxide ◽  
Pressure Sensor ◽  
Dielectric Layer ◽  
Pressure Sensors ◽  
Dielectric Matrix ◽  
First Time

Zinc oxide tetrapod is introduced for the first time within a poly(dimethylsiloxane) dielectric matrix for the formation of ultrasensitive piezocapacitive pressure sensors.

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