Application of a Novel Linear/Exponential Hybrid Force Field Scaling Scheme to the Longitudinal Raman Active Mode of Polyyne

2007 ◽  
Vol 111 (12) ◽  
pp. 2434-2441 ◽  
Author(s):  
Shujiang Yang ◽  
Miklos Kertesz ◽  
Viktor Zólyomi ◽  
Jenő Kürti
Keyword(s):  
Force Field ◽  
Raman Active Mode ◽  
Active Mode

Vibrational dynamic of the Raman-active mode in barium nitrate crystal

1995 ◽  
Vol 20 (23) ◽  
pp. 2378 ◽  
Author(s):  
P. G. Zverev ◽  
T. T. Basiev ◽  
W. Jia ◽  
H. Liu
Keyword(s):  
Barium Nitrate ◽  
Raman Active Mode ◽  
Active Mode

Measurement of Thermal Conductivities of Bi2Te3 and Sb2Te3 Nano-Powders at Extreme Temperature and Strain

2020 ◽  
Author(s):  
Chenxin Xu ◽  
Brandon Wang ◽  
Emily Sneddon ◽  
Gianna Marcovecchio ◽  
Greg Ota ◽  
...  
Keyword(s):  
Thin Films ◽  
Thermal Conductivity ◽  
Extreme Temperature ◽  
Peak Position ◽  
Raman Active Mode ◽  
Thermal Measurement ◽  
Active Mode ◽  
Conductivity Of Thin Films ◽  
First Time ◽  
Refined Version

Abstract The Raman optothermal technique has been the most successful method for measurement of thermal conductivity of two dimensional (2D) materials, and was used to measure the thin films for the first time in this work. In this technique, a laser is focused at the center of a thin film and used to measure the peak position of a Raman-active mode. As the laser power is increased, the sample is heated which enables red-shift Raman mode due to thermal softening. Another comparison experiment is conducted by placing the samples on a heating platform and monitor the change of Raman-active mode peak position shift. Combining these two sections of experiments provide us the thermal modeling can then be used to extract the thermal conductivity from the measured shift rate. We have used a refined version of the optothermal Raman technique to study thermal conductivity of thin films of Bi2Te3 and Sb2Te3, at extreme temperatures and mechanical strains. It is the first thermal measurement on these two materials by Raman optothermal technique. This work also addresses several important issues in the measurement of thermal conductivity of thin films using Raman spectroscopy.

Millimetre-wave and infrared spectroscopy of Br13 CN: anharmonic force field of cyanogen bromide from spectroscopic data and ab initio calculations

1997 ◽  
Vol 90 (3) ◽  
pp. 495-497
Author(s):  
CLAUDIO ESPOSTI ◽  
FILIPPO TAMASSIA ◽  
CRISTINA PUZZARINI ◽  
RICCARDO TARRONI ◽  
ZDENEK ZELINGER
Keyword(s):  
Infrared Spectroscopy ◽  
Force Field ◽  
Ab Initio Calculations ◽  
Ab Initio ◽  
Spectroscopic Data ◽  
Cyanogen Bromide ◽  
Millimetre Wave ◽  
Anharmonic Force

Molecular force field evaluation by empirical constraints

1976 ◽  
Vol 73 ◽  
pp. 1051-1057
Author(s):  
Sadao Isotani ◽  
Alain J.-P. Alix
Keyword(s):  
Force Field ◽  
Field Evaluation ◽  
Molecular Force ◽  
Molecular Force Field
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