scholarly journals Characterization of low dimensional materials by raman scattering spectroscopy.

1986 ◽  
Vol 25 (9) ◽  
pp. 738-745
Author(s):  
Shin-ichi Nakashima ◽  
Masanori Hangyo
Keyword(s):  
Raman Scattering ◽  
Raman Scattering Spectroscopy ◽  
Low Dimensional ◽  
Low Dimensional Materials

scholarly journals Thermal Characterization of Low-Dimensional Materials by Resistance Thermometers

Materials ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 1740 ◽  
Author(s):  
Yifeng Fu ◽  
Guofeng Cui ◽  
Kjell Jeppson
Keyword(s):  
Thermal Performance ◽  
Three Dimensional ◽  
Thermal Characterization ◽  
Resistance Thermometer ◽  
Light Emitting ◽  
Resistance Thermometers ◽  
Low Dimensional ◽  
Low Dimensional Materials ◽  
Boron Nitride Films

The design, fabrication, and use of a hotspot-producing and temperature-sensing resistance thermometer for evaluating the thermal properties of low-dimensional materials are described in this paper. The materials that are characterized include one-dimensional (1D) carbon nanotubes, and two-dimensional (2D) graphene and boron nitride films. The excellent thermal performance of these materials shows great potential for cooling electronic devices and systems such as in three-dimensional (3D) integrated chip-stacks, power amplifiers, and light-emitting diodes. The thermometers are designed to be serpentine-shaped platinum resistors serving both as hotspots and temperature sensors. By using these thermometers, the thermal performance of the abovementioned emerging low-dimensional materials was evaluated with high accuracy.

Characterization of grain boundary phase of a lead-based relaxor by raman scattering spectroscopy

1996 ◽  
Vol 16 (11) ◽  
pp. 1157-1161 ◽  
Author(s):  
Hideyuki Kanai ◽  
Yohachi Yamashita ◽  
Masato Kakihana ◽  
Masahiro Yoshimura
Keyword(s):  
Grain Boundary ◽  
Raman Scattering ◽  
Boundary Phase ◽  
Raman Scattering Spectroscopy

scholarly journals In situ characterization of the decomposition behavior of Mg(BH4)2 by X-ray Raman scattering spectroscopy

2016 ◽  
Vol 18 (7) ◽  
pp. 5397-5403 ◽  
Author(s):  
Christoph J. Sahle ◽  
Simon Kujawski ◽  
Arndt Remhof ◽  
Yigang Yan ◽  
Nicholas P. Stadie ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Raman Scattering ◽  
Hydrogen Atmosphere ◽  
In Situ Characterization ◽  
Raman Scattering Spectroscopy ◽  
X Ray ◽  
Decomposition Behavior

We present an in situ study of the thermal decomposition of Mg(BH4)2 in a hydrogen atmosphere of up to 4 bar and up to 500 °C using X-ray Raman scattering spectroscopy at the boron K-edge and the magnesium L2,3-edges.

Characterization of Cd1-x ZnxTe Alloys Using Infrared Reflectivity and Raman Scattering Spectroscopy

1993 ◽  
Vol 324 ◽  
Author(s):  
D. N. Talwar ◽  
Z. C. Feng ◽  
P. Becla
Keyword(s):  
Raman Scattering ◽  
Function Theory ◽  
Far Infrared ◽  
Raman Scattering Spectroscopy ◽  
Infrared Reflectivity ◽  
Gaas Films ◽  
Raman Study ◽  
Greens Function ◽  
Gap Mode

AbstractStudy of impurity-induced phonon disordering in Cdl-xZnxTe alloys is reported for a variety of samples by using far-infrared reflectivity and Raman scattering spectroscopy. Substantial differences were noted among the various published values for the optical phonon frequencies versus x. Contrary to an earlier Raman study on MBE grown Cdl-xZnxTe/GaAs films, our results within a twomode behavior, yield an increase of both the CdTe- and ZnTe-like transverse optical phonons with x. Unlike earlier speculations for a gap-mode in ZnTe : Cd of ∼140∼145 cm−1, our Greens function theory predicts it to be at a relatively higher frequency of ∼153 cm−1.

Growth and Characterization of 1D Bi2Te3 Nanowires

2005 ◽  
Vol 886 ◽  
Author(s):  
M. Craps ◽  
Nick Gothard ◽  
Rahul Rao ◽  
Jian He ◽  
JoAn Hudson ◽  
...  
Keyword(s):  
Figure Of Merit ◽  
Room Temperature ◽  
Iron Catalyst ◽  
Inert Atmosphere ◽  
Laser Vaporization ◽  
Theoretical Studies ◽  
Low Dimensional ◽  
Quartz Substrates ◽  
Low Dimensional Materials

ABSTRACTBulk bismuth telluride (Bi2Te3) is one of the best known thermoelectric materials with a figure of merit ZT ∼1 at room temperature. Theoretical studies have suggested that low-dimensional materials may exhibit ZT values that exceed 1. In this study, we used the pulsed laser vaporization (PLV) method to prepare Bi2Te3 nanowires on silicon and quartz substrates by ablating Bi2Te3 targets in an inert atmosphere. Nano-sized gold or iron catalyst particles were used to seed the growth of the Bi2Te3 nanowires. Results from electron microscopy and Raman spectroscopy are discussed.

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