Results 31 to 40 of about 749,354 (336)

A Universal Gauge for Thermal Conductivity of Silicon Nanowires With Different Cross Sectional Geometries

open access: yes, 2011
By using molecular dynamics simulations, we study thermal conductivity of silicon nanowires (SiNWs) with different cross sectional geometries. It is found that thermal conductivity decreases monotonically with the increase of surface-to-volume ratio (SVR)
Chen, Jie, Li, Baowen, Zhang, Gang
core   +1 more source

Thickness-dependent thermal properties of amorphous insulating thin films measured by photoreflectance microscopy [PDF]

open access: yes, 2017
In this work, we report on the measurement of the thermal conductivity of thin insulating films of SiO2 obtained by thermal oxidation, and Al2O3 grown by atomic layer deposition (ALD), both on Si wafers.
Al Mohtar, A.   +8 more
core   +3 more sources

Experimental Determination of the Lorenz Number in Cu0.01Bi2Te2.7Se0.3 and Bi0.88Sb0.12

open access: yes, 2012
Nanostructuring has been shown to be an effective approach to reduce the lattice thermal conductivity and improve the thermoelectric figure of merit. Because the experimentally measured thermal conductivity includes contributions from both carriers and ...
A. F. Ioffe   +12 more
core   +1 more source

Impact of Screw and Edge Dislocation on the Thermal Conductivity of Nanowires and Bulk GaN

open access: yes, 2017
We report on thermal transport properties of wurtzite GaN in the presence of dislocations, by using molecular dynamics simulations. A variety of isolated dislocations in a nanowire configuration were analyzed and found to reduce considerably the thermal ...
Belabbas, Imad   +5 more
core   +2 more sources

Thermal transport enhancement of hybrid nanocomposites; impact of confined water inside nanoporous silicon

open access: yes, 2020
The thermal transport properties of porous silicon and nano-hybrid "porous silicon/water" systems are presented here. The thermal conductivity was evaluated with equilibrium molecular dynamics technique for porous systems made of spherical voids or water-
Isaiev, Mykola   +3 more
core   +2 more sources

Hematopoietic (stem) cells—The elixir of life?

open access: yesFEBS Letters, EarlyView.
The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo   +4 more
wiley   +1 more source

Magneto-thermal conductivity effect and enhanced thermoelectric figure of merit in Ag2Te

open access: yesAIP Advances, 2023
In this study, we report a large magneto-thermal conductivity effect, potentially usable in heat flow switches and thermoelectric devices, in Ag2Te over a wide temperature range, including room temperature.
Keisuke Hirata   +5 more
doaj   +1 more source

Multiscale modeling of heat conduction in graphene laminates

open access: yes, 2017
We developed a combined atomistic-continuum hierarchical multiscale approach to explore the effective thermal conductivity of graphene laminates. To this aim, we first performed molecular dynamics simulations in order to study the heat conduction at ...
Mortazavi, B, Rabczuk, T
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Phonon transport in $\mathrm{Na_2He}$ at high pressure from a first-principles study

open access: yes, 2017
Phonon transport of recently-fabricated $\mathrm{Na_2He}$ at high pressure is investigated from a combination of first-principles calculations and the linearized phonon Boltzmann equation within the single-mode relaxation time approximation (RTA).
Guo, San-Dong, Zhang, Ai-Xia
core   +1 more source

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