scholarly journals Combined Pressure Sensor With Enhanced Dynamic Range Based on Thin Films of Nanotubes and Graphite Nanobelts

2021 ◽  
Vol 1 ◽  
Author(s):  
Andrei Alaferdov ◽  
Ilya Vilkov ◽  
Boris Kaverin ◽  
Anatoly Ob´edkov ◽  
Stanislav Moshkalev
Keyword(s):  
Pressure Sensor ◽  
Carbon Nanostructures ◽  
Dynamic Range ◽  
Multiwall Carbon Nanotubes ◽  
Low Power Consumption ◽  
Pressure Sensing ◽  
Langmuir Blodgett ◽  
Healthcare Monitoring ◽  
Flexible Pressure Sensor ◽  
Multiwall Carbon

Herein, we demonstrate the prototype of a combined flexible pressure sensor based on ultrathin multiwall carbon nanotubes (MWCNTs) and graphite nanobelts (GNBs) films embedded in polydimethylsiloxane (PDMS). A simple and scalable modified Langmuir–Blodgett method was used for deposition of both MWCNT and GNB films. The use of two types of carbon nanostructures (nanotubes and GNBs) with distinctly different mechanical properties allowed obtaining enhanced dynamic range for pressure sensing. Short response time, good sensibility and flexibility, and low power consumption for enhanced pressure range make possible applications of the sensor for healthcare monitoring and as a component in the human–machine interfaces application.

Pressure Sensing Fabric

2006 ◽  
Vol 920 ◽  
Author(s):  
Zhang Hui ◽  
Tao Xiao Ming ◽  
Yu Tong Xi ◽  
Li Xin Sheng
Keyword(s):  
Pressure Sensor ◽  
Fabrication Process ◽  
Sensing Element ◽  
Large Area ◽  
Pressure Sensing ◽  
Conductive Yarns ◽  
Flexible Pressure Sensor ◽  
Fabric Surface ◽  
The Cost ◽  
Resistive Grids

AbstractThis paper presents an approach for decoding the pressure information exerted over a piece of fabric by means of resistive sensing. The proposed sensor includes a distributed resistive grids constructed by two systems of orthogonally contacted electrical conductive yarns, with no external sensing element to be attached on the fabric. Since the conductive yarns serve as the sensing and wiring elements simultaneously, this design simplifies the fabrication process, reduces the cost and makes the production of large area flexible pressure sensor possible. The location of the pressure applied on the fabric can be identified by detecting the position where the change of the resistances occurs between two embroidered yarns. Meanwhile, the magnitude of the pressure can be acquired by measuring the variations of the resistance. In order to eliminate the “crosstalk” effect between adjoining fibers, the yarns were separately wired on the fabric surface.

A do-it-yourself approach to achieving a flexible pressure sensor using daily available materials

2021 ◽  
Author(s):  
Zaihua Duan ◽  
Yadong Jiang ◽  
Qi Huang ◽  
Zhen Yuan ◽  
Qiuni Zhao ◽  
...  
Keyword(s):  
Pressure Sensor ◽  
Manufacturing Process ◽  
Pressure Sensing ◽  
Do It Yourself ◽  
Flexible Pressure Sensor ◽  
Sensing Performance

The pressure sensing performance of flexible pressure sensor has been developed rapidly in recent years, but it still suffers from the disadvantages of complex manufacturing process and high cost. Here,...

scholarly journals A Flexible and Highly Sensitive Piezoresistive Pressure Sensor Based on Micropatterned Films Coated with Carbon Nanotubes

2016 ◽  
Vol 2016 ◽  
pp. 1-5 ◽  
Author(s):  
Jia-lin Yao ◽  
Xing Yang ◽  
Na Shao ◽  
Hui Luo ◽  
Ting Zhang ◽  
...  
Keyword(s):  
Pressure Sensor ◽  
Gas Sensing ◽  
Fluid Pressure ◽  
High Sensitivity ◽  
Sensing Element ◽  
Pressure Sensing ◽  
Piezoresistive Pressure Sensor ◽  
Highly Sensitive ◽  
Flexible Pressure Sensor ◽  
Low Consumption

Excellent flexibility, high sensitivity, and low consumption are essential characteristics in flexible microtube pressure sensing occasion, for example, implantable medical devices, industrial pipeline, and microfluidic chip. This paper reports a flexible, highly sensitive, and ultrathin piezoresistive pressure sensor for fluid pressure sensing, whose sensing element is micropatterned films with conductive carbon nanotube layer. The flexible pressure sensor, the thickness of which is 40 ± 10 μm, could be economically fabricated by using biocompatible polydimethylsiloxane (PDMS). Experimental results show that the flexible pressure sensor has high sensitivity (0.047 kPa−1in gas sensing and 5.6 × 10−3 kPa−1in liquid sensing) and low consumption (<180 μW), and the sensor could be used to measure the pressure in curved microtubes.

Boehmite Nanofibers as a Dispersant for Nanotubes in an Aqueous Sol

2018 ◽  
Author(s):  
Gen Hayase
Keyword(s):  
Carbon Nanotubes ◽  
Aspect Ratio ◽  
Aqueous Solutions ◽  
High Aspect Ratio ◽  
Multiwall Carbon Nanotubes ◽  
Multiwall Carbon ◽  
Nanotube Films

By exploiting the dispersibility and rigidity of boehmite nanofibers (BNFs) with a high aspect ratio of 4 nm in diameter and several micrometers in length, multiwall-carbon nanotubes (MWCNTs) were successfully dispersed in aqueous solutions. In these sols, the MWCNTs were dispersed at a ratio of about 5–8% relative to BNFs. Self-standing BNF–nanotube films were also obtained by filtering these dispersions and showing their functionality. These films can be expected to be applied to sensing materials.

scholarly journals Comparative study of using Water-Based mud containing Multiwall Carbon Nanotubes versus Oil-Based mud in HPHT fields

2016 ◽  
Vol 25 (4) ◽  
pp. 459-464 ◽  
Author(s):  
M.I. Abduo ◽  
A.S. Dahab ◽  
Hesham Abuseda ◽  
Abdulaziz M. AbdulAziz ◽  
M.S. Elhossieny
Keyword(s):  
Carbon Nanotubes ◽  
Comparative Study ◽  
Multiwall Carbon Nanotubes ◽  
Water Based ◽  
Multiwall Carbon
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