Optical pump-and-probe measurement of the thermal conductivity of nitride thin films

2002 ◽  
Vol 92 (7) ◽  
pp. 3820-3824 ◽  
Author(s):  
B. C. Daly ◽  
H. J. Maris ◽  
A. V. Nurmikko ◽  
M. Kuball ◽  
J. Han
Keyword(s):  
Thin Films ◽  
Thermal Conductivity ◽  
Probe Measurement ◽  
Optical Pump ◽  
Pump And Probe

Optical pump and probe measurement of the thermal conductivity of low-kdielectric thin films

2002 ◽  
Vol 92 (10) ◽  
pp. 6005-6009 ◽  
Author(s):  
Brian C. Daly ◽  
Humphrey J. Maris ◽  
Wayne K. Ford ◽  
George A. Antonelli ◽  
Larry Wong ◽  
...  
Keyword(s):  
Thin Films ◽  
Thermal Conductivity ◽  
Probe Measurement ◽  
Optical Pump ◽  
Pump And Probe

Anomaly of Thermal Properties in Thin Films of La1-x SrxCoO3 Series Fabricated as Thermoelectric Materials

2002 ◽  
Vol 730 ◽  
Author(s):  
Yoshiaki Takata ◽  
Hajime Haneda ◽  
Yutaka Adachi ◽  
Yoshiki Wada ◽  
Takefumi Mitsuhashi ◽  
...  
Keyword(s):  
Thin Films ◽  
Thermal Properties ◽  
Thermal Diffusivity ◽  
Thermoelectric Materials ◽  
Signal Analysis ◽  
Material Synthesis ◽  
Thermo Electric ◽  
Optical Pump ◽  
Pump And Probe ◽  
Reflection Geometry

AbstractComposition spreads of La1-xSrxCoO3 (LSCO) were synthesized as thermo-electric transducer material by means of combinatorial material synthesis, and information on their thermal diffusivity throughout the specimens was obtained. Meanwhile, it is anticipated that the composition spreads of LSCO have a variety of characteristic properties of light absorption corresponding to their composition, namely their compositional variable, x. Hence, we used transient optical pump-and-probe techniques in a reflection geometry to measure thermal diffusion times on LSCO. The results of signal analysis indicate that LSCO is a peculiar synthesized substance whose apparent thermal diffusivity, 1/ι, changes abruptly at the critical point, where the compositional variable x is equal to 0.3.

Thermal-conductivity measurements of GaAs/AlAs superlattices using a picosecond optical pump-and-probe technique

1999 ◽  
Vol 59 (12) ◽  
pp. 8105-8113 ◽  
Author(s):  
W. S. Capinski ◽  
H. J. Maris ◽  
T. Ruf ◽  
M. Cardona ◽  
K. Ploog ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Conductivity Measurements ◽  
Optical Pump ◽  
Probe Technique ◽  
Pump And Probe

Cross-plane thermal conductivity of thin films characterized by Flash DSC measurement

2019 ◽  
Vol 677 ◽  
pp. 21-25 ◽  
Author(s):  
Yucheng He ◽  
Xiaoheng Li ◽  
Ling Ge ◽  
Qinyun Qian ◽  
Wenbing Hu
Keyword(s):  
Thin Films ◽  
Thermal Conductivity ◽  
Conductivity Of Thin Films

scholarly journals Reduction of thermal conductivity in ferroelectric SrTiO3 thin films

2020 ◽  
Vol 4 (5) ◽  
Author(s):  
Alexandros Sarantopoulos ◽  
Dipanjan Saha ◽  
Wee-Liat Ong ◽  
César Magén ◽  
Jonathan A. Malen ◽  
...  
Keyword(s):  
Thin Films ◽  
Thermal Conductivity

Simulation of multiwavelength conditions in laser picosecond ultrasonics

SIMULATION ◽  
2021 ◽  
pp. 003754972199645
Author(s):  
Philippe Babilotte
Keyword(s):  
Numerical Simulations ◽  
Acoustic Signal ◽  
Acoustic Waves ◽  
Bulk Material ◽  
Deformation Field ◽  
Optical Pump ◽  
Pump And Probe ◽  
Oriented Object ◽  
Numerical Approaches ◽  
Picosecond Ultrasonics

Complete numerical simulations are given under SciLab® and MATLAB® coding environments, concerning propagative acoustic wavefronts, for laser picosecond ultrasonics under multiwavelength conditions. Simulations of the deformation field and its propagation into bulk material are given under different wavelength configurations for optical pump and probe beams, which are used to generate and to detect the acoustic signal. Complete insights concerning the dynamics of the acoustic waves are given, considering the absence of carrier diffusions into the material. Several numerical approaches are proposed concerning both the functions introduced to simulate the wavefront ( Heaviside or error) and the coding approach (linear/vectorized/ Oriented Object Programming), under the pure thermo-elastic approach.

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