Results 31 to 40 of about 107,488 (294)

From thermal rectifiers to thermoelectric devices

open access: yes, 2015
We discuss thermal rectification and thermoelectric energy conversion from the perspective of nonequilibrium statistical mechanics and dynamical systems theory. After preliminary considerations on the dynamical foundations of the phenomenological Fourier
A. Dhar   +142 more
core   +1 more source

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

open access: yesAdvanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source

Research progress on fractal microchannels for heat transfer process intensification

open access: yes工程科学学报, 2022
With the rapid development of microscale/nanoscale manufacturing technology, electronic microchips, microreactors, and microscale fuel cells have attracted considerable attention.
Zhen-zhen CHEN   +3 more
doaj   +1 more source

Spheroidal nanoparticles as thermal near-field sensors

open access: yes, 2011
We suggest to exploit the shape-dependence of the near-field heat transfer for nanoscale thermal imaging. By utilizing strongly prolate or oblate nanoparticles as sensors one can assess individual components of the correlation tensors characterizing the ...
Felix Rüting   +4 more
core   +1 more source

Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V

open access: yesAdvanced Engineering Materials, EarlyView.
This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann   +3 more
wiley   +1 more source

Experimental observation of nanoscale radiative heat flow due to surface plasmons in graphene and doped silicon

open access: yes, 2012
Owing to its two dimensional electronic structure, graphene exhibits many unique properties. One of them is a wave vector and temperature dependent plasmon in the infrared range.
Berger, C.   +4 more
core   +3 more sources

Enhancement and tunability of near-field radiative heat transfer mediated by surface plasmon polaritons in thin plasmonic films [PDF]

open access: yes, 2015
The properties of thermal radiation exchange between hot and cold objects can be strongly modified if they interact in the near field where electromagnetic coupling occurs across gaps narrower than the dominant wavelength of thermal radiation.
Boriskina, Svetlana V.   +5 more
core   +2 more sources

Enhancing Strength and Electrical Conductivity in Al–Zr–Sc Conductor Alloys Through Sn and Sr Microalloying and Two‐Step Aging Treatment

open access: yesAdvanced Engineering Materials, EarlyView.
Trace additions of Sn and Sr combined with a two‐step aging treatment are shown to enhance the microstructure and performance of Al–Zr–Sc conductor alloys. Strength and electrical conductivity increase concurrently through accelerated precipitation of fine Al3(Sc, Zr) precipitates and improved dislocation resistance, offering a cost‐effective pathway ...
Quan Shao   +3 more
wiley   +1 more source

Material informatics for heat transfer

open access: yesJournal of Thermal Science and Technology
This review paper summarizes the research for which the author has received the Nukiyama Memorial Award in 2022. The key essence of the research is “materials informatics (MI) for heat transfer” entailing the combination of nanoscale thermal science and ...
Junichiro SHIOMI
doaj   +1 more source

Surface grown copper nanowires for improved cooling efficiency

open access: yesCogent Engineering, 2018
The interactions between heat sink surfaces and coolant play important roles in cooling methods. This study relies upon controlled nanostructuring of heat sink surfaces that produces orders of magnitude increases in surface area, excites local vortexes ...
Anagi M. Balachandra   +4 more
doaj   +1 more source

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