Negative Impedance Capacitive Electrode for ECG Sensing Through Fabric Layer

2020 ◽  
pp. 1-1
Author(s):  
Ting-Wei Wang ◽  
Shien-Fong Lin
Keyword(s):  
Fabric Layer ◽  
Capacitive Electrode

scholarly journals Investigation on a Novel Capacitive Electrode for Geophysical Surveys

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Zhiyu Wang ◽  
Shun Wang ◽  
Guangyou Fang ◽  
Qunying Zhang
Keyword(s):  
Electrical Contact ◽  
Capacitive Coupling ◽  
Environmental Damage ◽  
Good Prospect ◽  
Test Results ◽  
Geophysical Surveys ◽  
Detection Circuit ◽  
Operating Bandwidth ◽  
Capacitive Electrode ◽  
Alternative Structure

Nonpolarizable electrodes are applied widely in the electric field measurement for geophysical surveys. However, there are two major problems: (1) systematic errors caused by poor electrical contact in the high resistive terrains and (2) environmental damage associated with using nonpolarizable electrodes. A new alternative structure of capacitive electrode, which is capable of sensing surface potential through weak capacitive coupling, is presented to solve the above problems. A technique is introduced to neutralize distributed capacitance and input capacitance of the detection circuit. With the capacitance neutralization technique, the transmission coefficient of capacitive electrode remains stable when environmental conditions change. The simulation and field test results indicate that the new capacitive electrode has an operating bandwidth range from 0.1 Hz to 1 kHz. The capacitive electrodes have a good prospect of the applications in geophysical prospecting, especially in resistive terrains.

Development and characterization of warp knitted spacer fabrics for helmet comfort liner application

2020 ◽  
pp. 152808372093921
Author(s):  
N Muthu Kumar ◽  
G Thilagavathi ◽  
S Periasamy
Keyword(s):  
Air Permeability ◽  
Compression Properties ◽  
Motorcycle Helmet ◽  
Evaporative Heat Transfer ◽  
Fabric Layer ◽  
Water Vapour Resistance ◽  
Standard Liner ◽  
Spacer Fabrics ◽  
Flexible Polyurethane

The inner padding layer of the motorcycle helmet is one of the important components that control the factors of comfort during wearing the helmet and provides a perfect fit and stability of the helmet on the head. The inner padding consists of a low-density flexible polyurethane layer attached to a soft fabric layer that is in direct contact with the head. The present study aims to replace foam in the comfort liner of a helmet with spacer fabrics to avoid the risk of heat stress during the use of the helmet. In this work, 9 warp-knitted spacer fabrics were produced by varying the course/cm (10, 12 & 14) and thickness (3, 3.5, and 4 mm). Air permeability, thermal, and water vapour resistance of the developed spacer fabrics were characterized along with compression properties and compared with commercially available standard liner. The results showed that warp-knitted spacer fabrics had better energy absorption compared to the standard liner. Also, the developed spacer fabrics had better breathability and evaporative heat transfer compared to the standard liner.

Investigation into the energy storage behaviour of layered α-V2O5 as a pseudo-capacitive electrode using operando Raman spectroscopy and a quartz crystal microbalance

2017 ◽  
Vol 19 (36) ◽  
pp. 24689-24695 ◽  
Author(s):  
Minghai Yao ◽  
Peng Wu ◽  
Shuang Cheng ◽  
Lufeng Yang ◽  
Yuanyuan Zhu ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Energy Storage ◽  
Quartz Crystal Microbalance ◽  
Layered Structure ◽  
Quartz Crystal ◽  
Step Procedure ◽  
Capacitive Electrode

α-V2O5 nanowires with a layered structure have been fabricated through a two-step procedure.

scholarly journals A simple and reproducible capacitive electrode

2016 ◽  
Vol 38 (3) ◽  
pp. 286-289 ◽  
Author(s):  
Enrique Spinelli ◽  
Federico Guerrero ◽  
Pablo García ◽  
Marcelo Haberman
Keyword(s):  
Capacitive Electrode
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