Interdigitated array microelectrode capacitive sensor for detection of paraffinophilic mycobacteria

2008 ◽  
Author(s):  
Andrew M. Sampson ◽  
Erik T. K. Peterson ◽  
Ian Papautsky
Keyword(s):  
Capacitive Sensor ◽  
Interdigitated Array

Microdroplet Monitoring Using Microfluid Circuit Combined Quartz Oscillator Based Capacitive Sensor

2018 ◽  
Vol 138 (8) ◽  
pp. 382-386
Author(s):  
Ryo Ebata ◽  
Ryo Sakai ◽  
Masayuki Sohgawa ◽  
Takashi Abe
Keyword(s):  
Capacitive Sensor ◽  
Quartz Oscillator

CALIBRATION AND SIMULATION OF A CAPACITIVE SENSOR FOR VOID FRACTION MEASUREMENTS

2018 ◽  
Author(s):  
Alihan Kaya ◽  
Marija Lazova ◽  
Steven Lecompte ◽  
Michel De Paepe
Keyword(s):  
Void Fraction ◽  
Capacitive Sensor

In-situ automatic observations of ice thickness of seas

2012 ◽  
Vol 19 (3) ◽  
pp. 583-592 ◽  
Author(s):  
Yinke Dou ◽  
Xiaomin Chang
Keyword(s):  
Sea Ice ◽  
New Technologies ◽  
Capacitive Sensor ◽  
Automatic Monitoring ◽  
Ice Thickness ◽  
In Situ Observation ◽  
Glacier Surface ◽  
Sea Ice Thickness ◽  
Surface Ice

Abstract Ice thickness is one of the most critical physical indicators in the ice science and engineering. It is therefore very necessary to develop in-situ automatic observation technologies of ice thickness. This paper proposes the principle of three new technologies of in-situ automatic observations of sea ice thickness and provides the findings of laboratory applications. The results show that the in-situ observation accuracy of the monitor apparatus based on the Magnetostrictive Delay Line (MDL) principle can reach ±2 mm, which has solved the “bottleneck” problem of restricting the fine development of a sea ice thermodynamic model, and the resistance accuracy of monitor apparatus with temperature gradient can reach the centimeter level and research the ice and snow substance balance by automatically measuring the glacier surface ice and snow change. The measurement accuracy of the capacitive sensor for ice thickness can also reach ±4 mm and the capacitive sensor is of the potential for automatic monitoring the water level under the ice and the ice formation and development process in water. Such three new technologies can meet different needs of fixed-point ice thickness observation and realize the simultaneous measurement in order to accurately judge the ice thickness.

Nanoprecision MEMS Capacitive Sensor for Linear and Rotational Positioning

2009 ◽  
Vol 18 (3) ◽  
pp. 660-670 ◽  
Author(s):  
Ju-Il Lee ◽  
Xinghui Huang ◽  
P.B. Chu
Keyword(s):  
Capacitive Sensor

scholarly journals Device for online monitoring of insulation faults in high-voltage switchgears

2021 ◽  
Vol 17 (2) ◽  
pp. 155014772199928
Author(s):  
Jiajia Song ◽  
Jinbo Zhang ◽  
Xinnan Fan
Keyword(s):  
Fourier Transform ◽  
High Voltage ◽  
Online Monitoring ◽  
Pulse Current ◽  
Partial Discharge ◽  
Current Method ◽  
Capacitive Sensor ◽  
Accurate Diagnosis ◽  
Partial Discharges ◽  
Urgent Problem

Partial discharges are the major cause of deterioration in the insulation characteristics of switchgears. Therefore, timely detection of partial discharge in switchgear and potential insulation faults is an urgent problem that needs to be addressed in the power supervision industry. In this study, a device was proposed for online monitoring of high-voltage switchgears based on pulse current method and ozone (O3) detection. The pulse current method obtains the PD signal by monitoring the phase holes on the switch indicator. Occurrence of a partial discharge in a certain phase leads to the production of a discharge pulse, which can be coupled out by a capacitive sensor. The current spectrum and the O3 produced by partial discharge were processed via fast Fourier transform for accurate diagnosis of the occurrence of partial discharge and its severity in switchgears. The proposed method allows for convenient acquisition of the partial discharge signal, simple installation of the device, and realization with inexpensive sensors.

Transmission of Ultrasonic Waves Via Optical Silica Glass Fiber Doped by 7.5% of TiO2 with the Use of Power Sandwich Transducer

2011 ◽  
Vol 36 (1) ◽  
pp. 141-150 ◽  
Author(s):  
Sylwia Muc ◽  
Tadeusz Gudra
Keyword(s):  
Optical Fibre ◽  
Output Signal ◽  
Optical Waveguides ◽  
Experimental Studies ◽  
Signal Amplitude ◽  
Capacitive Sensor ◽  
Ultrasonic Waves ◽  
Sandwich Type ◽  
Type Transducer ◽  
Simultaneous Transmission

Abstract The possibility of acoustic wave propagation in optical waveguides creates new prospects for simultaneous transmission of laser beams and ultrasonic waves. Combined laser-ultrasonic technology could be useful in e.g. surgical treatment. The article presents the results of experimental studies of transmission of ultrasonic wave in optical fibres, the core of which is doped by 7.5% of TiO2, using a sandwich-type transducer. It also presents amplitude characteristics of an ultrasonic signal propagated in the optical fibre. Authors studied the effect which the length of the fibre has on the achieved output signal amplitudes. They presented the relation of the output signal amplitude from a capacitive sensor to the power applied to the sandwich-type transducer. The obtained results were compared with the results produced when using an optical fibre with a core doped by 3% of GeO2, in order to select optical fibre suitable for simultaneous transmission of ultrasonic waves and laser rays.

scholarly journals Textile-Based Capacitive Sensor for Physical Rehabilitation via Surface Topological Modification

ACS Nano ◽  
2020 ◽  
Vol 14 (7) ◽  
pp. 8191-8201 ◽  
Author(s):  
Liming Chen ◽  
Mingyang Lu ◽  
Haosen Yang ◽  
Jorge Ricardo Salas Avila ◽  
Bowen Shi ◽  
...  
Keyword(s):  
Capacitive Sensor ◽  
Physical Rehabilitation
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