Drift mechanism of the metal nanowires formation in liquid helium

2019 ◽  
Vol 21 (10) ◽  
pp. 5771-5779 ◽  
Author(s):  
S. V. Stovbun ◽  
A. A. Skoblin
Keyword(s):  
Heat Release ◽  
Liquid Helium ◽  
Metal Nanowires ◽  
Quantum Vortex ◽  
Rapid Coagulation

It is shown theoretically that the mechanism of the rapid coagulation of metal nanospheres into a nanowire in a quantum vortex proposed by E. B. Gordon et al. (Low Temp. Phys., 2010, 36, 590) could not be realized, due to the enormous heat release expelling the nanospheres from the vortex.

Friction Force Limits the Drift of Microparticles Along the Quantum Vortex in Liquid Helium

2020 ◽  
Vol 200 (3-4) ◽  
pp. 91-101
Author(s):  
Aleksey A. Skoblin ◽  
Dmitry V. Zlenko ◽  
Sergey V. Stovbun
Keyword(s):  
Liquid Helium ◽  
Friction Force ◽  
Quantum Vortex

A Superconducting Microscope

1971 ◽  
Vol 29 ◽  
pp. 10-11 ◽  
Author(s):  
R. E. Worsham ◽  
J. E. Mann ◽  
E. G. Richardson
Keyword(s):  
Liquid Helium ◽  
Focal Length ◽  
Vacuum System ◽  
Objective Lens ◽  
Electrical Instability ◽  
Radiation Shields ◽  
And Control ◽  
Thermal Oscillations ◽  
Flux Pump

This superconducting microscope, Figure 1, was first operated in May, 1970. The column, which started life as a Siemens Elmiskop I, was modified by removing the objective and intermediate lenses, the specimen chamber, and the complete vacuum system. The large cryostat contains the objective lens and stage. They are attached to the bottom of the 7-liter helium vessel and are surrounded by two vapor-cooled radiation shields.In the initial operational period 5-mm and 2-mm focal length objective lens pole pieces were used giving magnification up to 45000X. Without a stigmator and precision ground pole pieces, a resolution of about 50-100Å was achieved. The boil-off rate of the liquid helium was reduced to 0.2-0.3ℓ/hour after elimination of thermal oscillations in the cryostat. The calculated boil-off was 0.2ℓ/hour. No effect caused by mechanical or electrical instability was found. Both 4.2°K and 1.7-1.9°K operation were routine. Flux pump excitation and control of the lens were quite smooth, simple, and, apparently highly stable. Alignment of the objective lens proved quite awkward, however, with the long-thin epoxy glass posts used for supporting the lens.

Water accumulation as a function of temperature on specimens in an electron microscope cold stage

1986 ◽  
Vol 44 ◽  
pp. 114-115 ◽  
Author(s):  
M.K. Lamvik ◽  
D.A. Kopf ◽  
S.D. Davilla ◽  
J.D. Robertson
Keyword(s):  
Electron Microscope ◽  
Mass Loss ◽  
Liquid Helium ◽  
Liquid Nitrogen ◽  
Liquid Nitrogen Temperature ◽  
Liquid Helium Temperature ◽  
Helium Temperature ◽  
Cold Stage ◽  
Water Accumulation ◽  
Better Than

Last year we reported1 that there is a striking reduction in the rate of mass loss when a specimen is observed at liquid helium temperature. It is important to determine whether liquid helium temperature is significantly better than liquid nitrogen temperature. This requires a good understanding of mass loss effects in cold stages around 100K.

Instability of the charged surface of liquid helium

1978 ◽  
Vol 126 (12) ◽  
pp. 693-694
Author(s):  
D.M. Chernikova ◽  
L.P. Gor'kov
Keyword(s):  
Liquid Helium ◽  
Charged Surface

Electrons above the surface of liquid helium

1978 ◽  
Vol 126 (12) ◽  
pp. 690-691
Author(s):  
V.B. Shikin
Keyword(s):  
Liquid Helium

Dynamics of Subcooled Liquid with Pulse Heat Release in a Heater

2001 ◽  
Vol 32 (4-6) ◽  
pp. 8
Author(s):  
E. A. Tairov ◽  
B. G. Pokusaev ◽  
D. A. Kazenin ◽  
S. A. Chizhikov ◽  
L. V. Syskov
Keyword(s):  
Heat Release ◽  
Subcooled Liquid ◽  
Pulse Heat

CONTROL OF HEAT RELEASE ENERGY DURING HEATING FROM SOLID-SOLID PHASE CHANGE MATERIAL

2018 ◽  
Author(s):  
Ryohei Gotoh ◽  
Tsuyoshi Totani ◽  
Masashi Wakita ◽  
Harunori Nagata
Keyword(s):  
Phase Change ◽  
Heat Release ◽  
Phase Change Material ◽  
Solid Phase ◽  
Change Material
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