Contact line dynamics of two-dimensional evaporating drops on heated surfaces with temperature-dependent wettabilities

The theory of ultrasonic attenuation in metals is extended so that it applies to quasi one and two dimensional electronic systems. It is shown that the attenuation in such systems differs significantly from the well-known results for three dimensional systems. The difference is particularly marked for one dimensional systems, for which the attenuation is shown to be strongly temperature dependent.

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Study of the temperature-dependent near-infrared spectra of water by two-dimensional correlation spectroscopy and principal components analysis

Vibrational Spectroscopy ◽

10.1016/j.vibspec.2005.10.002 ◽

2006 ◽

Vol 40 (2) ◽

pp. 235-245 ◽

Cited By ~ 64

Author(s):

Bogusława Czarnik-Matusewicz ◽

Sylwia Pilorz

Keyword(s):

Principal Components Analysis ◽

Infrared Spectra ◽

Principal Components ◽

Near Infrared ◽

Correlation Spectroscopy ◽

Two Dimensional ◽

Temperature Dependent ◽

Near Infrared Spectra ◽

Components Analysis

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151Eu Mössbauer Spectroscopic Characterization of EuRu4B4 and the New Boride EuRuB4

Zeitschrift für Naturforschung B ◽

10.1515/znb-2010-0116 ◽

2010 ◽

Vol 65 (1) ◽

pp. 90-94 ◽

Cited By ~ 3

Author(s):

Thomas Harmening ◽

Rainer Pöttgen

Keyword(s):

Boron Atom ◽

Mössbauer Spectra ◽

Induction Furnace ◽

Spectroscopic Characterization ◽

Two Dimensional ◽

Temperature Dependent ◽

X Ray ◽

Trivalent Europium ◽

Mossbauer Spectra

Samples of EuRu4B4 and of the new boride EuRuB4 were prepared from europium, RuB, and RuB4 precursor alloys, respectively, in sealed tantalum tubes in an induction furnace. EuRu4B4 crystallizes with the LuRu4B4 structure, a = 748.1(1), c = 1502.3(4) pm. The structure of EuRuB4 was refined on the basis of X-ray diffractometer data: Pbam, a = 599.7(1), b = 1160.7(3), c = 358.06(7) pm, wR2 = 0.0691, 474 F2 values, and 38 variables. The four crystallographically independent boron sites build up layers which consist of almost regular pentagons and heptagons which sandwich the ruthenium and europium atoms, respectively. Within the two-dimensional [B4] networks each boron atom has a slightly distorted trigonal-planar boron coordination with B-B distances in the range 172 - 186 pm. Temperature-dependent 151Eu Mössbauer spectra show stable trivalent europium for EuRu4B4 and EuRuB4

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Study of Thermometry in Two-Dimensional Sb2Te3 from Temperature-Dependent Raman Spectroscopy

Nanoscale Research Letters ◽

10.1186/s11671-020-03463-1 ◽

2021 ◽

Vol 16 (1) ◽

Cited By ~ 1

Author(s):

Manavendra P. Singh ◽

Manab Mandal ◽

K. Sethupathi ◽

M. S. Ramachandra Rao ◽

Pramoda K. Nayak

Keyword(s):

Thermal Conductivity ◽

Raman Spectroscopy ◽

Temperature Coefficient ◽

Heat Dissipation ◽

Peak Position ◽

Two Dimensional ◽

Phonon Modes ◽

Temperature Dependent ◽

Excellent Candidate ◽

High Figure

AbstractDiscovery of two-dimensional (2D) topological insulators (TIs) demonstrates tremendous potential in the field of thermoelectric since the last decade. Here, we have synthesized 2D TI, Sb2Te3 of various thicknesses in the range 65–400 nm using mechanical exfoliation and studied temperature coefficient in the range 100–300 K using micro-Raman spectroscopy. The temperature dependence of the peak position and line width of phonon modes have been analyzed to determine the temperature coefficient, which is found to be in the order of 10–2 cm−1/K, and it decreases with a decrease in Sb2Te3 thickness. Such low-temperature coefficient would favor to achieve a high figure of merit (ZT) and pave the way to use this material as an excellent candidate for thermoelectric materials. We have estimated the thermal conductivity of Sb2Te3 flake with the thickness of 115 nm supported on 300-nm SiO2/Si substrate which is found to be ~ 10 W/m–K. The slightly higher thermal conductivity value suggests that the supporting substrate significantly affects the heat dissipation of the Sb2Te3 flake.

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