Results 31 to 40 of about 2,831,660 (218)

Surface related laser induced white emission of Cr:YAG ceramic

open access: yesScientific Reports, 2021
In this work we report the white light emission in transparent Cr:YAG ceramic pellet upon irradiation with focused beam of CW infrared laser diode. It was found that this phenomenon is specifically related to interaction of laser beam with a surface of ...
M. Chaika, R. Tomala, W. Strek
doaj   +1 more source

Control and Stabilization of Centimeter Scale Glow Discharge in Ambient Air Using Pulse-Width Modulation

open access: yesIEEE Access, 2020
Re-pulsing glow discharges in atmospheric-pressure air were experimentally investigated using a push-pull generator with pulse-width modulation. Discharges were ignited as a spark-glow discharge sequence and sustained in a glow regime after ignition in a
Vladislav Gamaleev   +2 more
doaj   +1 more source

Magnetocaloric performance of the three-component Ho1-xErxNi2 (x = 0.25, 0.5, 0.75) Laves phases as composite refrigerants

open access: yesScientific Reports, 2022
To date, significant efforts have been put into searching for materials with advanced magnetocaloric properties which show promise as refrigerants and permit realization of efficient cooling.
Jacek Ćwik   +6 more
doaj   +1 more source

Antiferromagnets at Low Temperatures [PDF]

open access: yesAIP Conference Proceedings, 2011
The low-temperature properties of the Heisenberg antiferromagnet in 2+1 space-time dimensions are analyzed within the framework of effective Lagrangians. It is shown that the magnon-magnon interaction is very weak and repulsive, manifesting itself through a term proportional to five powers of the temperature in the pressure.
C. P. Hofmann   +4 more
openaire   +2 more sources

Half-quantum vortices and walls bounded by strings in the polar-distorted phases of topological superfluid 3He

open access: yesNature Communications, 2019
Symmetry-allowed topological defects, like quantized vortices, often control the universal behavior of macroscopic quantum systems. Here, Mäkinen et al.
J. T. Mäkinen   +7 more
doaj   +1 more source

Topologically-imposed vacancies and mobile solid 3He on carbon nanotube

open access: yesNature Communications, 2022
Probing fundamental quantum systems and their phase change is interesting. Here the authors demonstrate the existence of mobile quantum solid phase composed of dimerized 3He atoms and topology-induced vacancies using 3He adsorbed on carbon nanotube.
I. Todoshchenko   +9 more
doaj   +1 more source

Electron–phonon coupling in copper intercalated Bi $$_{2}$$ 2 Se $$_{3}$$ 3

open access: yesScientific Reports, 2022
We report charge and heat transport studies in copper-intercalated topological insulator Bi $$_2$$ 2 Se $$_3$$ 3 hybrid devices. Measured conductivity shows impact of quantum corrections, electron–electron and electron–phonon interactions. Our shot noise
Maciej Wiesner   +5 more
doaj   +1 more source

Development of high-performance amplifier of ECM-system for ice core analysis and data management

open access: yesAntarctic Record, 1996
An ECM (Electric Conductivity Measurement) apparatus was improved by reconstructing the current meter amplifier. The main improvements were reduction of noise and improvement of reproducibility, and adoption of a floating circuit.
Masayuki Ohi, Hideki Narita
doaj   +1 more source

Growth Rates of Crystal Grains in Snow at Mizuho Station, Antarctica (Special Issue of the Proceedings of the First Symposium on Antarctic Meteorology and Glaciology)

open access: yesAntarctic Record, 1979
Measurements of the mean cross-sectional area of crystal grams in snow were made with core samples drilled at Mizuho Station, Antarctica. It was found that the cross-sectional area of crystal grains in snow increased with increasing depth till the depth ...
Hideki NARITA, Norikazu MAENO
doaj   +1 more source

Low temperature flow lithography [PDF]

open access: yesBiomicrofluidics, 2018
Flow lithography (FL) is a microfluidic technique distinguished for its ability to produce hydrogel microparticles of various geometrical and chemical designs. While FL is typically performed in room temperature, this paper reports a new technique called low temperature flow lithography that uses low synthesis temperature to increase the degree of ...
H. Lee, Y. H. Roh, H. U. Kim, K. W. Bong
openaire   +2 more sources

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