Results 31 to 40 of about 1,809,136 (304)
Laser Cooling of two trapped ions: Sideband cooling beyond the Lamb-Dicke limit [PDF]
, 1998 We study laser cooling of two ions that are trapped in a harmonic potential and interact by Coulomb repulsion. Sideband cooling in the Lamb-Dicke regime is shown to work analogously to sideband cooling of a single ion.
A. Steane +40 more
core +2 more sources
Negative Temperature is Cool for Cooling
SSRN Electronic Journal, 2022 In this work, we study an autonomous refrigerator composed of three qubits [Phys. Rev. Lett. 105, 130401 (2010)] operating with one of the reservoirs at negative temperatures, which has the purpose of cooling one of the qubits. We find the values of the lowest possible temperature that the qubit of interest reaches when fixing the relevant parameters ...
Gabriella G. Damas +2 more
openaire +2 more sources
Efficient Poisson’s Ratio Evaluation of Weft-Knitted Auxetic Metamaterials
Textiles, 2023 Auxetic metamaterials expand transversely when stretched longitudinally or contract transversely when compressed, resulting in a negative Poisson’s ratio (NPR).
Kun Luan +4 more
doaj +1 more source
Angewandte Chemie International Edition, 2021 AbstractPhase transitions between different aggregate states are omnipresent in nature and technology. Conventionally, a crystalline phase melts upon heating as we use ice to cool a drink. Already in 1903, Gustav Tammann speculated about the opposite process, namely melting upon cooling. So far, evidence for such “inverse” transitions in real materials
Simon Aeschlimann +9 more
openaire +4 more sources
A rate equation approach to cavity mediated laser cooling [PDF]
, 2012 The cooling rate for cavity mediated laser cooling scales as the Lamb-Dicke parameter eta squared. A proper analysis of the cooling process hence needs to take terms up to eta^2 in the system dynamics into account.
A. Perelomov +4 more
core +2 more sources
Efficient sympathetic motional ground-state cooling of a molecular ion [PDF]
, 2015 Cold molecular ions are promising candidates in various fields ranging from precision spectroscopy and test of fundamental physics to ultra-cold chemistry.
Gebert, Florian +3 more
core +3 more sources
Heat Transfer Performance in a Vertical Grooved Thermosyphon
International Journal of Thermofluids, 2021 The performance of a grooved copper-water thermosyphon with a modest bend between a vertical evaporator section and inclined condenser section was characterized for a moderate fluid loading.
M.G. Hammouda +3 more
doaj +1 more source
Highway to the Comfort Zone: History of the Psychrometric Chart
Buildings, 2023 The psychrometric chart is the most common data visualization technique for the designers of thermal comfort systems worldwide. From its humble roots as means of expressing the characteristics of air in building systems design, the use of the chart has ...
Eric Teitelbaum +2 more
doaj +1 more source
Tribology Online, 2012 The optimum texturing pattern for a thrust sliding bearing of a scroll compressor was investigated. As the basis of lubrication analysis for multiple circular bumps pattern, fundamental hydrodynamic lubrication effects of the axisymmetric circular ...
Sanemasa Kawabata +4 more
doaj +1 more source
Physical Review Letters, 2016 8 pages, 3 figures; v2: minor improvements, version published in PRL (without appendices)
Kurkela, Aleksi, Vuorinen, Aleksi
openaire +4 more sources