Results 21 to 30 of about 961,052 (305)

Single-molecule nano-optics at low temperature [PDF]

open access: yes, 2006
The work presented in this thesis involves experiments on single molecules at low temperature. At low temperature, many disturbing temperature activated processes are frozen out, resulting in extremely sharp zero-phonon lines in the fluorescence ex ...
Butter, Jacqueline Yvonne Paula
core   +1 more source

Experimental study on uniaxial compressive strength of ultra-low temperature frozen clay

open access: yesYantu gongcheng xuebao, 2021
Underground transportation, coal mining and other projects often encounter the construction problems of sandy soil crisscross and extremely rich groundwater in soft soil strata.
WANG En-liang , REN Zhi-feng , HAN Hong-wei , TIAN Yu , HU Sheng-bo , LIU Xing-chao
doaj   +1 more source

Ultra small Pd clusters in FER zeolite alleviate CO poisoning for effective low temperature carbon monoxide oxidation

open access: yes, 2023
Ultra small Pd4 clusters form inside FER zeolite during low temperature treatment (100 °C) in the presence of humid CO gas. They effectively catalyze CO oxidation below 100°C, whereas Pd nanoparticles are not active as they are poisoned by CO.
Jaeyoung , Heo   +8 more
core   +1 more source

Vitrification Solutions for Plant Cryopreservation: Modification and Properties

open access: yesPlants, 2021
Many plants cannot vitrify themselves because they lack glassy state-inducing substances and/or have high water content. Therefore, cryoprotectants are used to induce vitrification.
Jiri Zamecnik   +2 more
doaj   +1 more source

Ultra-Dense Nano- and Molecular-Electronic Circuits [PDF]

open access: yes, 2007
This thesis describes research towards the realization of large-scale, ultra-dense nanowire-based circuits. The primary means for the construction of such circuits is the superlattice nanowire pattern transfer (SNAP) technique.
Green, Jonathan Earl
core   +1 more source

Thermometry at Ultra-Low Temperatures [PDF]

open access: yesJapanese Journal of Applied Physics, 1987
A new millikelvin temperature scale is presented which is based in part on the constraint that the normal-phase specific heat of liquid 3He be linear in temperature with a proportionality constant taken from higher-temperature specific heat measurements.
openaire   +1 more source

Study on the Performance of a New Ultra-Low Temperature Air Source Heat Pump (ASHP) Unit in Cold Regions

open access: yesBuildings, 2023
Low air temperature and frosting have been reported as the critical factors that greatly attenuate the efficiency and performance of the ASHP in cold regions.
Yanqiang Di   +5 more
doaj   +1 more source

Quadratic behavior of fiber Bragg grating temperature coefficients [PDF]

open access: yes, 2004
We describe the characterization of the temperature and strain responses of fiber Bragg grating sensors by use of an interferometric interrogation technique to provide an absolute measurement of the grating wavelength. The fiber Bragg grating temperature
Bennion, Ian   +24 more
core   +1 more source

Ultra-Low-Temperature Refrigeration Systems: A Review and Performance Comparison of Refrigerants and Configurations

open access: yesEnergies, 2023
During the last decade, many industrial and medical applications have shown a requirement for low-temperature-cooling usage (from −40 to −80 °C), which cannot be efficiently obtained via the conventional refrigeration systems usually employed for medium ...
Muhammad Zahid Saeed   +5 more
doaj   +1 more source

Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures [PDF]

open access: yesJournal of Visualized Experiments, 2012
The physical properties of a material are defined by its electronic structure. Electrons in solids are characterized by energy (ω) and momentum (k) and the probability to find them in a particular state with given ω and k is described by the spectral function A(k, ω).
Borisenko Sergey V   +10 more
openaire   +2 more sources

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