Evaporation of strange matter (and similar condensed phases) at high temperatures

1989 ◽  
Vol 39 (4) ◽  
pp. 1233-1234 ◽  
Author(s):  
Charles Alcock ◽  
Angela Olinto
Keyword(s):  
High Temperatures ◽  
Condensed Phases ◽  
Strange Matter

Neutrino Mean Free Path in Strange Matter at High Temperatures

2004 ◽  
Vol 21 (12) ◽  
pp. 2376-2379
Author(s):  
Ma Zhong-Xiang ◽  
Zhao Yong-Heng
Keyword(s):  
Free Path ◽  
High Temperatures ◽  
Mean Free Path ◽  
Strange Matter

I. An Apparatus for Use with Condensed Phases at 10,000°. II. Some Thermodynamic and Rate Considerations at Very High Temperatures

1958 ◽  
Vol 62 (3) ◽  
pp. 346-351 ◽  
Author(s):  
Tracy Hall ◽  
Billings Brown ◽  
Bruce Nelson ◽  
Lane A. Compton
Keyword(s):  
High Temperatures ◽  
Condensed Phases ◽  
Very High

scholarly journals Negative Thermal Quenching of Photoluminescence from Liquid-Crystalline Molecules in Condensed Phases

Crystals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1555
Author(s):  
Hussain Sami ◽  
Osama Younis ◽  
Yui Maruoka ◽  
Kenta Yamaguchi ◽  
Kumar Siddhant ◽  
...  
Keyword(s):  
Chain Length ◽  
High Temperatures ◽  
Liquid Crystalline ◽  
Thermal Quenching ◽  
Material Design ◽  
Terminal Group ◽  
Molecular Structures ◽  
Isotropic Phase ◽  
Condensed Phases ◽  
Luminescent Materials

The luminescence of materials in condensed phases is affected by not only their molecular structures but also their aggregated structures. In this study, we designed new liquid-crystalline luminescent materials based on biphenylacetylene with a bulky trimethylsilyl terminal group and a flexible alkoxy chain. The luminescence properties of the prepared materials were evaluated, with a particular focus on the effects of phase transitions, which cause changes in the aggregated structures. The length of the flexible chain had no effect on the luminescence in solution. However, in crystals, the luminescence spectral shape depended on the chain length because varying the chain length altered the crystal structure. Interestingly, negative thermal quenching of the luminescence from these materials was observed in condensed phases, with the isotropic phase obtained at high temperatures exhibiting a considerable increase in luminescence intensity. This thermal enhancement of the luminescence suggests that the less- or nonemissive aggregates formed in crystals are dissociated in the isotropic phase. These findings can contribute toward the development of new material design concepts for useful luminescent materials at high temperatures.

Evidence for Dominant Role of Tunneling in Condensed Phases and at High Temperatures: Double Hydrogen Transfer in Porphycenes

2016 ◽  
Vol 7 (2) ◽  
pp. 283-288 ◽  
Author(s):  
Piotr Ciąćka ◽  
Piotr Fita ◽  
Arkadiusz Listkowski ◽  
Czesław Radzewicz ◽  
Jacek Waluk
Keyword(s):  
High Temperatures ◽  
Hydrogen Transfer ◽  
Dominant Role ◽  
Condensed Phases ◽  
Double Hydrogen

In situ REM imaging of surface processes on ceramic bulk crystals from 300 to 1670 K in a conventional TEM

1991 ◽  
Vol 49 ◽  
pp. 660-661
Author(s):  
Z. L. Wang ◽  
J. Bentley
Keyword(s):  
High Temperatures ◽  
Image Resolution ◽  
Atomic Processes ◽  
Crystal Surfaces ◽  
Beam Radiation ◽  
Surface Areas ◽  
Transmission Electron ◽  
Reflection Electron Microscopy ◽  
Gas Reactions

Studying the behavior of surfaces at high temperatures is of great importance for understanding the properties of ceramics and associated surface-gas reactions. Atomic processes occurring on bulk crystal surfaces at high temperatures can be recorded by reflection electron microscopy (REM) in a conventional transmission electron microscope (TEM) with relatively high resolution, because REM is especially sensitive to atomic-height steps.Improved REM image resolution with a FEG: Cleaved surfaces of a-alumina (012) exhibit atomic flatness with steps of height about 5 Å, determined by reference to a screw (or near screw) dislocation with a presumed Burgers vector of b = (1/3)<012> (see Fig. 1). Steps of heights less than about 0.8 Å can be clearly resolved only with a field emission gun (FEG) (Fig. 2). The small steps are formed by the surface oscillating between the closely packed O and Al stacking layers. The bands of dark contrast (Fig. 2b) are the result of beam radiation damage to surface areas initially terminated with O ions.

Measuring the electric resistance of metals and alloys at high temperatures by a hardware-and-software system

2018 ◽  
pp. 60-64 ◽  
Author(s):  
M. Yu. Chernoskutov ◽  
A. D. Ivliev ◽  
V. V. Meshkov ◽  
A. O. Samoilov ◽  
A. S. Sosnin
Keyword(s):  
High Temperatures ◽  
Metals And Alloys ◽  
Software System ◽  
Electric Resistance ◽  
Hardware And Software System

Investigation of the physical properties of carbon under high temperatures (experimental studies)

2020 ◽  
Vol 63 (10) ◽  
pp. 1015-1036 ◽  
Author(s):  
A I Savvatimskii ◽  
S V Onufriev
Keyword(s):  
Physical Properties ◽  
High Temperatures ◽  
Experimental Studies
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