Piezoresistive effect in vertical Hall cell

1993 ◽  
Vol 29 (4) ◽  
pp. 381 ◽  
Author(s):  
K. Maenaka
Keyword(s):  
Piezoresistive Effect ◽  
Hall Cell

Advances in Ultrasensitive Piezoresistive Sensors: from Conventional to Flexible and Stretchable Applications

2021 ◽  
Author(s):  
Thanh Viet Nguyen ◽  
Toan Dinh ◽  
Hoang-Phuong Phan ◽  
Tuan Anh Pham ◽  
Van Thanh Dau ◽  
...  
Keyword(s):  
Piezoresistive Effect ◽  
Piezoresistive Sensors ◽  
Sensing Applications ◽  
Mechanical Sensing

Piezoresistive effect has been a dominant mechanical sensing principle that has been widely employed in a range of sensing applications. This transducing concept still receives great attentions because of the...

Study on a Novel MEMS High G Acceleration Sensor

2012 ◽  
Vol 490-495 ◽  
pp. 499-503
Author(s):  
Ping Li ◽  
Yun Bo Shi ◽  
Jun Liu ◽  
Shi Qiao Gao
Keyword(s):  
Resonant Frequency ◽  
Natural Frequency ◽  
Impact Load ◽  
Hopkinson Bar ◽  
Experimental Results ◽  
Structure Parameters ◽  
Acceleration Sensor ◽  
Piezoresistive Effect ◽  
Sensor Structure ◽  
The Impact

This paper presents a novel MEMS high g acceleration sensor based on piezoresistive effect. For the designed sensor structure, the formula of stress, natural frequency and damping was derived in theory, and the resonant frequency can up to 500kHz. After the structure parameters were designed, the sensor was fabricated by the standard processing technology, and the sensitivity was tested by Hopkinson bar. According to the experimental results, the sensitivity of the high g acceleration sensor is 0.125μV/g at the impact load of 164,002g.

scholarly journals Study on the Stability of the Electrical Connection of High-Temperature Pressure Sensor Based on the Piezoresistive Effect of P-Type SiC

Micromachines ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 216
Author(s):  
Yongwei Li ◽  
Ting Liang ◽  
Cheng Lei ◽  
Qiang Li ◽  
Zhiqiang Li ◽  
...  
Keyword(s):  
High Temperature ◽  
Pressure Sensor ◽  
Pressure Sensors ◽  
Extreme Environment ◽  
Maximum Temperature ◽  
Piezoresistive Effect ◽  
Electrical Connection ◽  
Contact Stability ◽  
The Stability ◽  
P Type

In this study, a preparation method for the high-temperature pressure sensor based on the piezoresistive effect of p-type SiC is presented. The varistor with a positive trapezoidal shape was designed and etched innovatively to improve the contact stability between the metal and SiC varistor. Additionally, the excellent ohmic contact was formed by annealing at 950 °C between Ni/Al/Ni/Au and p-type SiC with a doping concentration of 1018cm−3. The aging sensor was tested for varistors in the air of 25 °C–600 °C. The resistance value of the varistors initially decreased and then increased with the increase of temperature and reached the minimum at ~450 °C. It could be calculated that the varistors at ~100 °C exhibited the maximum temperature coefficient of resistance (TCR) of ~−0.35%/°C. The above results indicated that the sensor had a stable electrical connection in the air environment of ≤600 °C. Finally, the encapsulated sensor was subjected to pressure/depressure tests at room temperature. The test results revealed that the sensor output sensitivity was approximately 1.09 mV/V/bar, which is better than other SiC pressure sensors. This study has a great significance for the test of mechanical parameters under the extreme environment of 600 °C.

scholarly journals A Model for Predicting the Piezoresistive Effect in Microflexures Experiencing Bending and Tension Loads

2008 ◽  
Vol 17 (1) ◽  
pp. 226-235 ◽  
Author(s):  
G.K. Johns ◽  
L.L. Howell ◽  
B.D. Jensen ◽  
T.W. McLain
Keyword(s):  
Piezoresistive Effect

Shear Piezoresistive Response of a Graphite/Silicone Suspension

2006 ◽  
Author(s):  
John Edmiston ◽  
Yuri M. Shkel
Keyword(s):  
Shear Flow ◽  
Experimental Approach ◽  
Second Harmonic ◽  
Viscoelastic Liquid ◽  
Rheological Characteristics ◽  
Piezoresistive Effect ◽  
Material Parameters ◽  
Oscillatory Shear Flow ◽  
Measurement Results ◽  
Liquid Suspensions

A shear piezoresistive effect has been observed for micrographite particles suspended in uncured silicone elastomer. A phenomenological formulation of piezoresistivity is presented and an experimental approach is discussed within this paper. The experimental objective is to extract two material parameters, fully describing the piezoresistance effect in deformed isotropic materials. A rheometer in the cone-and-plate configuration provides well-defined oscillatory shear flow of the suspension; it also measures rheological characteristics of the suspension. The piezoresistive response is probed using interdigitated electrodes, which are attached to the rheometer plate. The electrodes are arranged in parallel-to-flow and perpendicular-to-flow orientations. The signal acquired from two such orthogonal electrode pairs can be combined in a way to exclude any contribution of volumetric deformations to the piezoresistance signal. The experimental results indicate a second harmonic relationship between the mechanical oscillation and the resistive response. These two-probe measurement results represent the first observations of a non-volumetric deformation contribution to the piezoresistivity of viscoelastic liquid suspensions.

scholarly journals Autonomous self-healing multiwalled carbon nanotube nanocomposites with piezoresistive effect

RSC Advances ◽  
2017 ◽  
Vol 7 (33) ◽  
pp. 20422-20429 ◽  
Author(s):  
Tongfei Wu ◽  
Biqiong Chen
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Multiwalled Carbon Nanotubes ◽  
Multiwalled Carbon Nanotube ◽  
Self Healing ◽  
Multiwalled Carbon ◽  
Piezoresistive Effect

Viscoelastic rubber reinforced by multiwalled carbon nanotubes exhibited rapid, autonomous, mechanically and electrically self-healing properties and piezoresistive behavior.

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