Results 11 to 20 of about 193,763 (276)
Observation of Quantum Capacitance of individual single walled carbon nanotubes [PDF]
, 2008 We report a measurement on quantum capacitance of individual semiconducting and small band gap SWNTs. The observed quantum capacitance is remarkably smaller than that originating from density of states and it implies a strong electron correlation in ...
Cui, Xiaodong +3 more
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Measurement of Gas-Liquid Two-Phase Flow in Micro-Pipes by a Capacitance Sensor
Sensors, 2014 A capacitance measurement system is developed for the measurement of gas-liquid two-phase flow in glass micro-pipes with inner diameters of 3.96, 2.65 and 1.56 mm, respectively. As a typical flow regime in a micro-pipe two-phase flow system, slug flow is
Haifeng Ji +4 more
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Implementation of a Controller for a Space-Grade, Piezo-Actuated Fabry-Perot Interferometer
IEEE Access, 2022 A tunable Fabry-Perot interferometer (FPI) can be used as an optical band-pass filter. This type of filter is used in spectrometers and spectral imagers. The transmitted wavelength depends on the optical cavity adjusted by an electronic controller.
Christer Holmlund, Roberts Trops
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Gate-capacitance extraction from RF C-V measurements [PDF]
, 2004 In this work, a full two-port analysis of an RF C-V measurement set-up is given. This two-port analysis gives insight on the limitations of the commonly used gate capacitance extraction, based on the Y/sub 11/ parameter of the device.
Kort, R. de, Sasse, G.T., Schmitz, J.
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Parasitic Effects on Electrical Bioimpedance Systems: Critical Review
Sensors, 2022 Parasitic capacitance represents the main error source in measurement systems based on electrical impedance spectroscopy. The capacitive nature of electrodes’ impedance in tetrapolar configuration can give origin to phase errors when electrodes are ...
David William Cordeiro Marcôndes +2 more
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Fast RF-CV characterization through high-speed 1-port S-parameter measurements [PDF]
, 2010 We present a novel method to measure the capacitance-voltage relation of an electronic device. The approach is accurate, very fast, and cost-effective compared to the existing off-the-shelf solutions.
Herfst, R.W. +4 more
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Design of capacitance measurement module for determining critical cold temperature of tea leaves
Sensing and Bio-Sensing Research, 2016 Critical cold temperature is one of the most crucial control factors for crop frost protection. Tea leaf's capacitance has a significant response to cold injury and appears as a peak response to a typical low temperature which is the critical temperature.
Yongzong Lu +4 more
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High Voltage, 2020 A simple procedure to estimate series capacitance of a uniform transformer winding from its measured frequency response analysis (FRA) and shunt capacitance is presented. Unlike previously published approaches, this method does not involve any cumbersome
Ashiq Muhammed +3 more
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Completely automated system for capacitance measurement through new accurate capacitance box
International Journal of Metrology and Quality Engineering, 2017 Capacitance boxes (CBs) are extensively used in electrical laboratories for calibration of capacitance measurement devices. In this paper, a new recently fabricated CB has been presented to be used for automatic calibrations through its 4096 output ...
Raouf M. Helmy A.
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Novel Stable Capacitive Electrocardiogram Measurement System [PDF]
Sensors, 2021 This study presents a noncontact electrocardiogram (ECG) measurement system to replace conventional ECG electrode pads during ECG measurement. The proposed noncontact electrode design comprises a surface guard ring, the optimal input resistance, a ground guard ring, and an optimal voltage divider feedback. The surface and ground guard rings are used to
Chi-Chun Chen +2 more
openaire +3 more sources