Picosecond acoustics in p-doped piezoelectric semiconductors

2010 ◽  
Vol 97 (17) ◽  
pp. 174103 ◽  
Author(s):  
P. Babilotte ◽  
P. Ruello ◽  
G. Vaudel ◽  
T. Pezeril ◽  
D. Mounier ◽  
...  
Keyword(s):  
Piezoelectric Semiconductors

scholarly journals Analysis of Flexural Vibrations of a Piezoelectric Semiconductor Nanoplate Driven by a Time-Harmonic Force

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3926
Author(s):  
Mengen Li ◽  
Qiaoyun Zhang ◽  
Bingbing Wang ◽  
Minghao Zhao
Keyword(s):  
Electron Concentration ◽  
Smart Devices ◽  
Harmonic Force ◽  
Plate Structures ◽  
Piezoelectric Semiconductor ◽  
Initial Electron ◽  
Time Harmonic ◽  
Semiconductor Plate ◽  
Flexural Vibrations ◽  
Piezoelectric Semiconductors

The performance of devices fabricated from piezoelectric semiconductors, such as sensors and actuators in microelectromechanical systems, is superior; furthermore, plate structures are the core components of these smart devices. It is thus important to analyze the electromechanical coupling properties of piezoelectric semiconductor nanoplates. We established a nanoplate model for the piezoelectric semiconductor plate structure by extending the first-order shear deformation theory. The flexural vibrations of nanoplates subjected to a transversely time-harmonic force were investigated. The vibrational modes and natural frequencies were obtained by using the matrix eigenvalue solver in COMSOL Multiphysics 5.3a, and the convergence analysis was carried out to guarantee accurate results. In numerical cases, the tuning effect of the initial electron concentration on mechanics and electric properties is deeply discussed. The numerical results show that the initial electron concentration greatly affects the natural frequency and electromechanical fields of piezoelectric semiconductors, and a high initial electron concentration can reduce the electromechanical fields and the stiffness of piezoelectric semiconductors due to the electron screening effect. We analyzed the flexural vibration of typical piezoelectric semiconductor plate structures, which provide theoretical guidance for the development of new piezotronic devices.

Ultrasonic Harmonic Generation in Piezoelectric Semiconductors

1972 ◽  
Vol 43 (7) ◽  
pp. 2937-2944 ◽  
Author(s):  
Chhi‐Chong Wu ◽  
Harold N. Spector
Keyword(s):  
Harmonic Generation ◽  
Piezoelectric Semiconductors

The growth of wave discontinuities in piezoelectric semiconductors

1979 ◽  
Vol 20 (12) ◽  
pp. 2682-2691 ◽  
Author(s):  
M. F. McCarthy ◽  
H. F. Tiersten
Keyword(s):  
Piezoelectric Semiconductors

Enhanced selectivity of methane production for photocatalytic reduction by the piezoelectric effect

2017 ◽  
Vol 53 (70) ◽  
pp. 9765-9768 ◽  
Author(s):  
Kaiqiang Wang ◽  
Zhibin Fang ◽  
Xueyan Huang ◽  
Wenhui Feng ◽  
Yaozhu Wang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Ultrasonic Irradiation ◽  
Methane Production ◽  
Piezoelectric Effect ◽  
Photocatalytic Reduction ◽  
Piezoelectric Potential ◽  
Piezoelectric Semiconductors ◽  
Enhanced Selectivity

Under simultaneous full arc light and ultrasonic irradiation, photo-generated electrons are brought together by piezoelectric potential, and thus dense electrons induce the reduction of carbon dioxide on the surface of piezoelectric semiconductors, resulting in an improved selectivity of methane production to a greater degree.

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