Results 31 to 40 of about 631,922 (278)

In situ observation of the austenite to ferrite transformation in low-carbon steels from different initial phases at defined cooling rates

Journal of Materials Research and Technology
An experimental investigation has been conducted with respect to the decomposition of austenite to various ferritic products from different initial phase states (molten-state of 1550 °C and solid-state of 1050 °C) and pre-defined cooling rates (1 °C/s ...
Ce Liang, Guangxin Song, Wanlin Wang, IL Sohn, Jie Zeng   +4 more
doaj   +1 more source

Density functional theory study of energetics, local chemical environment and magnetic properties in a high-entropic MnNiSi0.2Ge0.2Sn0.2Al0.2Ga0.2 intermetallic magnet

JPhys Energy, 2023
Rare-earth-free magnetostructural MnNiSi-based solid solutions are considered as promising candidates for solid-state cooling applications. In this paper, we use density functional theory calculations to study the energetics, variations in atomic ...
Timothy Q Hartnett, Kyungtae Lee, Prasanna V Balachandran   +2 more
doaj   +1 more source

Cooling performance evaluation of impingement jet cooling passage on solid-state power amplifier in RF system

Heliyon, 2022
As the performance requirement for the X-band radar for military use increased, the X-band radar has come to consist of many Transmit/Receive (T/R) modules.
Jun Su Park, Dong Kyun Lee, Sung Hwan Yim   +2 more
doaj   +1 more source

A Single Laser System for Ground-State Cooling of 25-Mg+

, 2011
We present a single solid-state laser system to cool, coherently manipulate and detect $^{25}$Mg$^+$ ions. Coherent manipulation is accomplished by coupling two hyperfine ground state levels using a pair of far-detuned Raman laser beams.
A. Friedenauer, A. Friedenauer, A.L. Wolf, B. Hemmerling, C. Langer, C. Monroe, C.-H. Chang, C.F. Roos, C.W. Chou, D. Leibfried, D. Nigg, D.J. Wineland, D.J. Wineland, E.A. Donley, E.J. Salumbides, F. Gebert, G. Kirchmair, H. Häffner, I. V. Sherstov, J. Eschner, J.I. Cirac, K. Kim, N. Kjærgaard, P. O. Schmidt, P.F. Staanum, P.J. Lee, P.O. Schmidt, Q.A. Turchette, R. Blatt, R. Gerritsma, R.A. Negres, R.J. Epstein, R.W.P. Drever, S. Olmschenk, T. Rosenband, T. Schaetz, T. Schneider, T.W. Hänsch, W. Alt, W. Paul, W.M. Itano, Y. Wan   +41 more
core   +1 more source

Novel mechanocaloric materials for solid-state cooling applications [PDF]

Applied Physics Reviews, 2019
Current refrigeration technologies based on compression cycles of greenhouse gases are environmentally threatening and cannot be scaled down to on-chip dimensions. Solid-state cooling is an environmentally friendly and highly scalable technology that may solve most of the problems associated with current refrigerant methods.
openaire   +2 more sources

Enhancing the Heat Transfer in an Active Barocaloric Cooling System Using Ethylene-Glycol Based Nanofluids as Secondary Medium

Energies, 2019
Barocaloric cooling is classified as environmentally friendly because of the employment of solid-state materials as refrigerants. The reference and well-established processes are based on the active barocaloric regenerative refrigeration cycle, where the
Ciro Aprea, Adriana Greco, Angelo Maiorino, Claudia Masselli   +3 more
doaj   +1 more source

Cooling of the Nuclear Spin System of a Nanostructure by Oscillating Magnetic Fields

Nanomaterials, 2023
We propose a method of cooling nuclear spin systems of solid-state nanostructures by applying a time-dependent magnetic field synchronized with spin fluctuations. Optical spin noise spectroscopy is considered a method of fluctuation control. Depending on
Kirill V. Kavokin
doaj   +1 more source

Exciton-polaritons gas as a nonequilibrium coolant

, 2015
Using angle-resolved Raman spectroscopy, we show that a resonantly excited ground-state exciton-polariton fluid behaves like a nonequilibrium coolant for its host solid-state semiconductor microcavity.
Baas, Augustin, Datta, Sanjoy, Durupt, Emilien, Hommel, Detlef, Klein, Thorsten, Klembt, Sebastian, Kruse, Carsten, Léger, Yoan, Minguzzi, Anna, Richard, Maxime   +9 more
core   +4 more sources

Experimental investigation on effect of cooling rate on carbide precipitation during solidification of high manganese steel

Journal of Materials Research and Technology
In order to elucidate the effect of cooling rate on the carbide formation during the solidification process of high manganese steel Mn13, the solidification process is artificially divided into two stages, namely the liquid-solid phase transition stage ...
Jiaru Han, Sen Luo, Ning Liu, Kui Chen, Shizheng Xie, Weiling Wang, Miaoyong Zhu   +6 more
doaj   +1 more source

Magnetocaloric materials: the search for new systems

, 2012
The prospect of efficient solid state refrigeration at room temperature is driving research into magnetic cooling engine design and magnetic phase transition-based refrigerants.
Sandeman, Karl G.
core   +1 more source