scholarly journals Using Micro-Molding and Stamping to Fabricate Conductive Polydimethylsiloxane-Based Flexible High-Sensitivity Strain Gauges

Sensors ◽  
2018 ◽  
Vol 18 (2) ◽  
pp. 618 ◽  
Author(s):  
Chi-Jui Han ◽  
Hsuan-Ping Chiang ◽  
Yun-Chien Cheng
Keyword(s):  
High Sensitivity ◽  
Strain Gauges ◽  
Micro Molding

scholarly journals Giant gauge factor of Van der Waals material based strain sensors

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Wenjie Yan ◽  
Huei-Ru Fuh ◽  
Yanhui Lv ◽  
Ke-Qiu Chen ◽  
Tsung-Yin Tsai ◽  
...  
Keyword(s):  
Carrier Mobility ◽  
Large Range ◽  
Van Der Waals ◽  
High Sensitivity ◽  
Strain Sensors ◽  
Strain Gauges ◽  
Gauge Factor ◽  
Proof Of Concept ◽  
High Flexibility ◽  
Small Deformations

AbstractThere is an emergent demand for high-flexibility, high-sensitivity and low-power strain gauges capable of sensing small deformations and vibrations in extreme conditions. Enhancing the gauge factor remains one of the greatest challenges for strain sensors. This is typically limited to below 300 and set when the sensor is fabricated. We report a strategy to tune and enhance the gauge factor of strain sensors based on Van der Waals materials by tuning the carrier mobility and concentration through an interplay of piezoelectric and photoelectric effects. For a SnS2 sensor we report a gauge factor up to 3933, and the ability to tune it over a large range, from 23 to 3933. Results from SnS2, GaSe, GeSe, monolayer WSe2, and monolayer MoSe2 sensors suggest that this is a universal phenomenon for Van der Waals semiconductors. We also provide proof of concept demonstrations by detecting vibrations caused by sound and capturing body movements.

Development Of PVDF Thick Film Interdigitated Capacitors For Pressure Measurement On Flexible Melinex Substrates

2005 ◽  
Vol 870 ◽  
Author(s):  
Arous Arshak ◽  
Khalil Arshak ◽  
Deirdre Morris ◽  
Olga Korostynska ◽  
Essa Jafer
Keyword(s):  
Polymer Film ◽  
Thick Film ◽  
Pressure Measurement ◽  
Pressure Sensors ◽  
High Sensitivity ◽  
Strain Gauges ◽  
Interdigitated Electrodes ◽  
Higher Sensitivity

AbstractIn this work, a PVDF thick film paste was deposited onto interdigitated electrodes to form a capacitor. Two different substrates, alumina and Melinex® were used. Capacitors, fabricated on alumina substrates were tested as strain gauges, and showed a high sensitivity with low hysteresis. Capacitors on Melinex® substrates were tested as pressure sensors by adhering them to planar and cylindrical surfaces and subjecting them to pressures up to 300 kPa. Their sensitivity and hysteresis during cycling were examined and compared. It was found that sensors on cylindrical surfaces showed a higher sensitivity, however the hysteresis was also increased. It is thought that this is due to instabilities in the polymer film, accentuated by stretching of the substrate.

scholarly journals Decoupled Six-Axis Force–Moment Sensor with a Novel Strain Gauge Arrangement and Error Reduction Techniques

Sensors ◽  
2019 ◽  
Vol 19 (13) ◽  
pp. 3012 ◽  
Author(s):  
Getnet Ayele Kebede ◽  
Anton Royanto Ahmad ◽  
Shao-Chun Lee ◽  
Chyi-Yeu Lin
Keyword(s):  
Measurement Error ◽  
Strain Gauge ◽  
Least Squares Method ◽  
High Sensitivity ◽  
Error Reduction ◽  
Strain Gauges ◽  
Calibration Error ◽  
Reduction Techniques ◽  
Force Moment ◽  
Sensor Measurement

In this study, a novel strain gauge arrangement and error reduction techniques were proposed to minimize crosstalk reading and simultaneously increase sensitivity on a decoupled six-axis force–moment (F/M) sensor. The calibration process that comprises the least squares method and error reduction techniques was implemented to obtain a robust decoupling matrix. A decoupling matrix is very crucial for minimizing error and crosstalk. A novel strain gauge arrangement that comprised double parallel strain gauges in the decoupled six-axis force–moment sensor was implemented to obtain high sensitivity. The experimental results revealed that the maximum calibration error, F/M sensor measurement error, and crosstalk readings were reduced to 3.91%, 1.78%, and 4.78%, respectively.

scholarly journals Fully Printed Silver-Nanoparticle-Based Strain Gauges with Record High Sensitivity

2017 ◽  
Vol 3 (7) ◽  
pp. 1700067 ◽  
Author(s):  
Suoming Zhang ◽  
Le Cai ◽  
Wei Li ◽  
Jinshui Miao ◽  
Tongyu Wang ◽  
...  
Keyword(s):  
Silver Nanoparticle ◽  
High Sensitivity ◽  
Strain Gauges

A prototype high sensitivity load cell using single walled carbon nanotube strain gauges

2012 ◽  
Vol 180 ◽  
pp. 120-126 ◽  
Author(s):  
Dongil Lee ◽  
Hyun Pyo Hong ◽  
Myung Jin Lee ◽  
Chan Won Park ◽  
Nam Ki Min
Keyword(s):  
Carbon Nanotube ◽  
High Sensitivity ◽  
Load Cell ◽  
Strain Gauges ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon

scholarly journals Hypersonic Aerodynamic Force Balance Using Micromachined All-Fiber Fabry–Pérot Interferometric Strain Gauges

Micromachines ◽  
2019 ◽  
Vol 10 (5) ◽  
pp. 316 ◽  
Author(s):  
Huacheng Qiu ◽  
Fu Min ◽  
Yanguang Yang ◽  
Zengling Ran ◽  
Jinxin Duan
Keyword(s):  
Wind Tunnel ◽  
Aerodynamic Force ◽  
High Sensitivity ◽  
Force Balance ◽  
Strain Gauges ◽  
External Temperature ◽  
Thermal Output ◽  
Hypersonic Wind Tunnel ◽  
Wide Range ◽  
Fabry Perot

This paper presents high-sensitivity, micromachined all-fiber Fabry–Pérot interferometric (FFPI) strain gauges and their integration in a force balance for hypersonic aerodynamic measurements. The FFPI strain gauge has a short Fabry–Pérot cavity fabricated using an excimer laser etching process, and the deformation of the cavity is detected by a white-light optical phase demodulator. A three-component force balance, using the proposed FFPI gauges as sensing elements, was fabricated, calibrated, and experimentally evaluated. To reduce thermal output of the balance, a simple and effective self-temperature compensation solution, without external temperature sensors, is proposed and examined through both oven heating and wind tunnel runs. As a result of this approach, researchers are able to use the balance continuously throughout a wide range of temperatures. During preliminary testing in a hypersonic wind tunnel with a free stream Mach number of 12, the measurement accuracies of the balance were clearly improved after applying the temperature self-compensation.

scholarly journals Silicon whisker pressure sensors for noise reduction in silencers

2021 ◽  
pp. 28-32
Author(s):  
A. A. Druzhinin ◽  
A. P. Kutrakov ◽  
R. V. Zinko
Keyword(s):  
Noise Suppression ◽  
Combustion Engine ◽  
Pressure Sensors ◽  
Low Frequency ◽  
High Sensitivity ◽  
Strain Gauges ◽  
Active System ◽  
Operating Modes ◽  
Noise Characteristics ◽  
Active Noise

The article contains the results of research and development of a system for active noise damping of an automobile engine. The main source of noise from a running engine is exhaust noise. The frequency spectrum of this sound has a pronounced low-frequency character, which explains its weak absorption when the sound is propagating in open spaces. A possible solution to this problem is to use an active system for suppressing the resonant frequencies of the muffler using strain gauges to read the primary information about the dynamic processes that determine the noise level. It is for such active noise suppression systems that the authors develop a high-temperature pressure sensor based on strain gauges made of silicon whiskers. Such strain gauges have unique mechanical properties, are characterized by high sensitivity and the ability to operate in various amplitude-frequency and temperature ranges up to 500℃. The study of the dynamic characteristics of pressure sensors made it possible to confirm the quality of its electromechanical part and determine that the measurement error of the sensor is ±0.5 in the temperature range of 20 to 500℃. The active noise suppression system is a buffer tank whose volume changes in accordance with signals from pressure sensors. This design makes it possible to dynamically change the resonant frequency of the buffer capacitance depending on the operating modes of the engine, which leads to a decrease in its noise characteristics. Using the developed additional resonator chamber with a variable volume in the exhaust muffler of an internal combustion engine made it possible to reduce resonance phenomena in the zone of low-frequency pulsations of the exhaust gas pressure from 57 to 43 Hz with a frequency drift in the range of 310 to 350 Hz, which significantly improved its noise characteristics.

Development of high sensitivity oxide based strain gauges and pressure sensors

2006 ◽  
Vol 17 (9) ◽  
pp. 767-778 ◽  
Author(s):  
K. Arshak ◽  
D. Morris ◽  
A. Arshak ◽  
O. Korostynska
Keyword(s):  
Pressure Sensors ◽  
High Sensitivity ◽  
Strain Gauges
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