Results 51 to 60 of about 24,558,950 (403)
Convection of snow: when and why does it happen?
Frontiers in Earth Science, 2023 Convection of water vapor in snowpacks is supposed to have a major impact on snow density and microstructure profiles with strong implications for the thermal regime and snow stability.
Mahdi Jafari +3 more
doaj +1 more source
Inducing Chalcogenide Phase Change with Ultra-Narrow Carbon Nanotube Heaters [PDF]
Appl. Phys. Lett. 95, 243103 (2009), 2009 Carbon nanotube (CNT) heaters with sub-5 nm diameter induce highly localized phase change in Ge2Sb2Te5 (GST) chalcogenide. A significant reduction in resistance of test structures is measured as the GST near the CNT heater crystallizes. Effective GST heating occurs at currents as low as 25 uA, significantly lower than in conventional phase change ...
arxiv +1 more source
Phase Change Materials Application in Battery Thermal Management System: A Review
Materials, 2020 The purpose of a battery thermal management system (BTMS) is to maintain the battery safety and efficient use as well as ensure the battery temperature is within the safe operating range. The traditional air-cooling-based BTMS not only needs extra power,
Changcheng Liu +9 more
semanticscholar +1 more source
Theoretical Study on the Ice Melting with Transient Double Effects of Temperature and Concentration
Journal of Thermal Science and Technology, 2013 The melting of the ice plate with the transient double effects of the temperature and concentration was studied theoretically. In the present study, our main attention was paid to the early stage of melting, when the abrupt changes of the temperature and
Masahide NAKAMURA +4 more
doaj +1 more source
Energy Science & Engineering, 2023 A reliable battery thermal management system (BTMS) not only can effectively decrease the maximum temperature but also maintain the temperature uniformity of the lithium‐ion (Li‐ion) battery after grouping.
Feifei Liu +4 more
doaj +1 more source
Aerospace, 2023 Ice crystal icing occurs in jet engine compressors, which can severely degrade jet engine performance. In this study, we developed an ice crystal trajectory simulation, considering the state changes of ice crystals with a forced convection model ...
Koichiro Hirose +3 more
doaj +1 more source
Investigation of tempered AISI 420 SS under dry slided conditions for sustainable applications [PDF]
E3S Web of ConferencesMartensitic stainless steel exhibits a lower corrosion resistance, higher hardness, wear resistance, and strength, but no ductility. As a result, tempering techniques have been used to stabilise the ductility.
Kumar S.N.S. Santhosh +6 more
doaj +1 more source
The Ultrafast Optical Response of the Amorphous and Crystalline States of the Phase Change Material Ge$_2$Sb$_2$Te$_5$ [PDF]
Phys. Rev. B 94, 024301 (2016), 2016 We examine the ultrafast optical response of the crystalline and amorphous phases of the phase change material Ge$_2$Sb$_2$Te$_5$ below the phase transformation threshold. Simultaneous measurement of the transmissivity and reflectivity of thin film samples yields the time-dependent evolution of the dielectric function for both phases.
arxiv +1 more source
Kinetics of Phase Change. I General Theory
, 1939 The theory of the kinetics of phase change is developed with the experimentally supported assumptions that the new phase is nucleated by germ nuclei which already exist in the old phase, and whose number can be altered by previous treatment.
M. Avrami
semanticscholar +1 more source
Nonlinear behavior of geometric phases induced by photon pairs [PDF]
, 2011 In this study, we observe the nonlinear behavior of the two-photon geometric phase for polarization states using time-correlated photons pairs. This phase manifests as a shift of two-photon interference fringes.
H. Kobayashi +5 more
core +2 more sources