Mathematical Models of Pressure and Microdisplacement Sensors Based on Electric Field Perturbation of the Surface Acoustic Waves

The effect of two types of superionic nanoparticles; Cu7GeS5I and Ag7GeS5I, respectively on nematic liquid crystal (6CB) behavior under an external electric field is investigated. The response of both attenuation of surface acoustic waves propagating along with the substrate/liquid crystal interface and light transmission are used to study the structural changes induced by applied electric field. The increasing/decreasing regime as well as jumped change of applied field were used. The light transmission was investigated using linearly polarized laser beam (532 nm) propagating through the liquid crystal. Results obtained from both measurements for three different concentrations (0.01, 0.05 and 0.10 wt%) and in addition two different sizes of nanoparticles are compared and results, relying on structural changes, suspension stability and switching behavior are evaluated.

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Acoustic-Electric Properties of Graphene under the Influence of a Surface Acoustic Waves and an External DC Field

MRS Advances ◽

10.1557/adv.2016.279 ◽

2016 ◽

Vol 1 (20) ◽

pp. 1495-1500 ◽

Cited By ~ 1

Author(s):

Zeke Insepov ◽

Kurbangali B. Tynyshtykbaev ◽

Ardak Ainabayev ◽

Anatoly F. Vyatkin

Keyword(s):

Acoustic Wave ◽

Electric Field ◽

External Electric Field ◽

Acoustic Waves ◽

Room Temperature ◽

Surface Acoustic Waves ◽

Electrical Neutrality ◽

Field Bias ◽

Acoustoelectric Current

ABSTRACTMeasurements of the induced acoustoelectric (IAEC) current in graphene subjected to a surface acoustic wave (SAW) discovered a quantisized character of acoustoelectric current at low bias voltage (Vbias) . The quantisized nature of IAEC has been obtained in all measurements as a result of interaction of SAW and an applied an external electric field. The acoustoelectric currents were studied near the point of electrical neutrality at room temperature. Raman spectra of graphene under the in-situ SAW influence and at an external electric field bias are presented.

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Effect of an Electric Field on the Propagation Velocity of Surface Acoustic Waves in Piezoelectric media

10.1109/ultsym.1983.198238 ◽

1983 ◽

Cited By ~ 1

Author(s):

A. Palma ◽

F. Palma ◽

L. Palmieri ◽

G. Socino ◽

E. Verona

Keyword(s):

Electric Field ◽

Acoustic Waves ◽

Propagation Velocity ◽

Surface Acoustic Waves ◽

Piezoelectric Media

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Nonlinear Acoustoelastic Interactions of Lamb Waves with LiNbO3 Films Deposited on Sapphire Substrates

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.261-263.263 ◽

2004 ◽

Vol 261-263 ◽

pp. 263-268 ◽

Cited By ~ 1

Author(s):

H. Liu ◽

K.C. Shin ◽

J.J. Lee ◽

Z.M. Cai

Keyword(s):

Electric Field ◽

Acoustic Waves ◽

Lamb Waves ◽

Piezoelectric Plate ◽

Surface Acoustic Waves ◽

Bias Field ◽

Film Structure ◽

Voltage Sensors ◽

Sapphire Substrates ◽

Piezoelectric Structure

The influence of a biasing electric field on the propagation of the lowest-order antisymmetrical a0 Lamb wave modes in a bi-layered piezoelectric plate is investigated in this paper. It is found that the velocity shifts for the a0 mode due to presence of the bias field on the 10- µm LiNbO3 film structure are comparable with those observed in surface acoustic waves and Lamb waves in LiNbO3 plates. The fractional change in phase velocity of the layered piezoelectric structure is a linear function of the biasing electric field and can be used in voltage sensors.

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