Flexible Non-contact Electrodes for Minimizing Artifacts in Electrocardiograms Measurement during Motion

2019 ◽  
Author(s):  
Shuting Liu ◽  
Xin Wang ◽  
Mingxing Zhu ◽  
Yanbing Jiang ◽  
Dan Wang ◽  
...  
Keyword(s):  
Contact Electrodes

Enhanced output of GaN-based light-emitting diodes with stripe-contact electrodes

2006 ◽  
Vol 89 (8) ◽  
pp. 081127 ◽  
Author(s):  
Yanxu Zhu ◽  
Chen Xu ◽  
Ting Liang ◽  
Xiaoli Da ◽  
Jianming Zhang ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Light Emitting ◽  
Stripe Contact ◽  
Contact Electrodes

Competitive Impact of Nanotube Assembly and Contact Electrodes on the Performance of CNT-based FETs

2016 ◽  
Vol 120 (18) ◽  
pp. 10020-10026 ◽  
Author(s):  
M. Toader ◽  
S. Hermann ◽  
L. Scharfenberg ◽  
M. Hartmann ◽  
M. Mertig ◽  
...  
Keyword(s):  
Contact Electrodes

Abstract 1357: Mobility of Epicardial Rotors During Human Ventricular Fibrillation

Circulation ◽  
2007 ◽  
Vol 116 (suppl_16) ◽  
Author(s):  
Martyn P Nash ◽  
Ayman Mourad ◽  
Chris P Bradley ◽  
David J Paterson ◽  
Peter M Sutton ◽  
...  
Keyword(s):  
Coronary Artery Disease ◽  
Cardiac Surgery ◽  
Aortic Valve Disease ◽  
Singularity Analysis ◽  
Epicardial Mapping ◽  
Voltage Versus ◽  
Phase Singularity ◽  
The Mean ◽  
Artery Disease ◽  
Contact Electrodes

Introduction: Stability of reentry during VF may depend on the dynamics of rotor cores. We determined the mobility of rotors during human VF using global epicardial mapping and phase singularity analysis. Methods: In 10 patients undergoing cardiac surgery (6 with coronary artery disease; 4 with aortic valve disease), VF was induced by burst pacing prior to (n=7) or immediately following (n=3) the onset of cardiopulmonary bypass. For each subject, a 20 – 40 s episode of fibrillatory activity was sampled at 1 kHz using an epicardial sock containing 256 unipolar contact electrodes connected to a UnEmap system. Trajectories of persistent epicardial rotors (singularities of phase maps, based on de-trended voltage versus its Hilbert transform, lasting for > 1000 ms) were tracked. The mean core location was determined across the lifetime of each persistent rotor. The rotor was classified as stationary if its core remained within 15 mm of the mean location for more than 90% of its duration. Results: Using the above criteria, the numbers of mobile and stationary rotors varied from patient-to-patient (see figure ). In all but one patient, there were more mobile than stationary rotors. Over all patients, the mean ± SD number of mobile rotors (32 ± 21) was significantly greater than stationary rotors (7 ± 6, P<0.01). Conclusions: At least one stationary rotor was always present during human VF, but it is predominantly characterised by a small number of persistent mobile rotors.

scholarly journals New schemes of compact modal LC modulators for control of light spatial structure

2018 ◽  
Vol 190 ◽  
pp. 03006
Author(s):  
Svetlana Kotova ◽  
Alexandra Mayorova ◽  
Sergey Samagin
Keyword(s):  
Numerical Simulation ◽  
Spatial Structure ◽  
Intensity Distribution ◽  
Single Molecules ◽  
Transverse Plane ◽  
Phase Delay ◽  
Light Fields ◽  
Light Passing ◽  
Vortex Field ◽  
Contact Electrodes

The results of numerical simulation of new schemes of compact modal LC spatial modulators are presented. Special configurations of contact electrodes and predetermined values of applied voltages provide the jump in the profile of phase delay of light passing through the modulator or reflecting from it. This leads to the appearance of a vortex field. Ring-shaped light fields and light fields with intensity distribution in the form of two maxima, which rotate in the transverse plane during propagation were obtained. These devices may be valuable for use in the spectroscopy of single molecules.

GaSe/MoS 2 Heterostructure with Ohmic‐Contact Electrodes for Fast, Broadband Photoresponse, and Self‐Driven Photodetectors

2020 ◽  
Vol 7 (9) ◽  
pp. 1901848 ◽  
Author(s):  
Zhenbei He ◽  
Junxiong Guo ◽  
Shangdong Li ◽  
Zhicheng Lei ◽  
Lin Lin ◽  
...  
Keyword(s):  
Ohmic Contact ◽  
Contact Electrodes

scholarly journals Alignment-free process for asymmetric contact electrodes and their application in light-emitting organic field-effect transistors

2008 ◽  
Vol 92 (5) ◽  
pp. 053505 ◽  
Author(s):  
Tomo Sakanoue ◽  
Masayuki Yahiro ◽  
Chihaya Adachi ◽  
Jeremy H. Burroughes ◽  
Yoshiaki Oku ◽  
...  
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Organic Field Effect Transistors ◽  
Light Emitting ◽  
Alignment Free ◽  
Free Process ◽  
Contact Electrodes ◽  
Asymmetric Contact

scholarly journals Comparison of Different Commercial Conducting Materials as Ion-to-Electron Transducer Layers in Low-Cost Selective Solid-Contact Electrodes

Sensors ◽  
2020 ◽  
Vol 20 (5) ◽  
pp. 1348
Author(s):  
C. Ocaña ◽  
M. Muñoz-Correas ◽  
N. Abramova ◽  
A. Bratov
Keyword(s):  
Good Accuracy ◽  
Low Cost ◽  
Pollution Monitoring ◽  
Ion Selective Electrodes ◽  
Comparison Study ◽  
Food Control ◽  
Solid Contact ◽  
Conducting Materials ◽  
Commercial Applications ◽  
Contact Electrodes

Simple, robust, sensitive and low-cost all-solid-state ion-selective electrodes (SCISEs) are of interest in different fields, such as medicine, veterinary, water treatment, food control, environmental and pollution monitoring, security, etc. as a replacement for traditional ion-selective electrodes with liquid inner contact. In spite of their potential advantages, SCISEs remain mainly in the research laboratories. With the motivation of developing simple and low-cost SCISEs with possible commercial applications, we report a comparison study of six different commercial conducting materials, namely, polypyrrole-block-polycaprolactone (PPy-b-PCaprol), graphene/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) ink, poly(3,4-ethylenedioxythiophene):polyethylenglycol (PEDOT:PEG), high conductivity PEDOT:PSS, polyethylenimine (PEI) with PEDOT:PSS for their possible use as ion-to-electron transducer in polyurethane based pH-SCISEs. Among all studied pH-SCISES, PEDOT:PEG based electrodes exhibited the best results in terms of sensitivity, reproducibility and lifetime. Finally, these sensors were tested in different real samples showing good accuracy.

scholarly journals Ruthenium dioxide nanoparticles as a high-capacity transducer in solid-contact polymer membrane-based pH-selective electrodes

2019 ◽  
Vol 186 (12) ◽  
Author(s):  
Nikola Lenar ◽  
Beata Paczosa-Bator ◽  
Robert Piech
Keyword(s):  
High Capacity ◽  
Glass Electrode ◽  
Ruthenium Dioxide ◽  
Solid Contact ◽  
New Approach ◽  
Potentiometric Response ◽  
Small Resistance ◽  
Nernstian Slope ◽  
Capacity Transducer ◽  
Contact Electrodes

AbstractA new approach is presented for the design of ion selective electrodes. Ruthenium dioxide nanoparticles were incorporated into solid-contact electrodes, and their properties were studied for the case of pH-selective electrodes. The use of the RuO2 is shown to significantly improve the potentiometric response, while no redox response is observed. The use of RuO2 results in a Nernstian slope (59 mV/decade) towards hydrogen ions over a wide linear range (pH 2 to 12). The results obtained by chronopotentiometry reveal small resistance, and the capacitance is as high as 1.12 mF. This results in a good stability of the response and in a low potential drift (0.89 μV∙s−1). The electrodes exhibit properties nearly as excellent as those of a glass electrode, but they are much smaller, less fragile, and easy to use.

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