2017
DOI: 10.1063/1.5004447
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Realization of mechanical rotation in superfluid helium

Abstract: The possibility of using miniaturized low-power electric motors submerged in superfluid helium for organization of rotation inside a cryostat has been investigated. It has been revealed that many of commercial micromotors can operate in liquid helium consuming low power. Turret with 5 sample holders, assembled on the base of stepper motor, has been successfully tested in experiments on the nanowire production in quantized vortices of superfluid helium. Application of the stepper motor made it possible in a sin… Show more

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Cited by 4 publications
(8 citation statements)
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“…The presence in nanoweb of spherical clusters being similar to those formed in common liquids was associated with exceedingly high density of a metal introduced into liquid helium [19]. The hot clusters then have no time for cooling down between their successive mutual collisions and they could grow larger than the critical size, determined by the form ula (5) of [23].…”
Section: Laser Physics Lettersmentioning
confidence: 97%
See 1 more Smart Citation
“…The presence in nanoweb of spherical clusters being similar to those formed in common liquids was associated with exceedingly high density of a metal introduced into liquid helium [19]. The hot clusters then have no time for cooling down between their successive mutual collisions and they could grow larger than the critical size, determined by the form ula (5) of [23].…”
Section: Laser Physics Lettersmentioning
confidence: 97%
“…However, the nanowebs produced by laser ablation of a metal in He II included an appreciable amount of nanospheres with diameters much larger than the nanowire diameter [19]. For the nanoweb application as a catalyst this was not significant disadvantage.…”
Section: Laser Physics Lettersmentioning
confidence: 99%
“…Understanding of this shortcoming has allowed us to create a new design, where spherical inclusions in nanowires are absent, and the length of individual nanowires in a nanoweb is significantly higher than in the original method. 21 That will be especially important in the studies of different size effects, for example in superconductivity 22 or in quantum phase shift. 23 Finally the main conclusion of this study can be represented graphically in Figure 6.…”
Section: ■ Results and Discussionmentioning
confidence: 99%
“…Besides the consumption of the ablated metal for inclusions production decreases the yield of nanowires. Understanding of this shortcoming has allowed us to create a new design, where spherical inclusions in nanowires are absent, and the length of individual nanowires in a nanoweb is significantly higher than in the original method . That will be especially important in the studies of different size effects, for example in superconductivity or in quantum phase shift …”
Section: Discussionmentioning
confidence: 99%
“…One unique feature of this setup is the ability to rotate our beaker at cryogenic temperatures. The possibility of rotating a beaker containing He II was demonstrated in previous work [18,19]. In our setup, rotation of the beaker is accomplished by mounting the quartz beaker to the output shaft of a stepper motor (see Fig.…”
Section: Methodsmentioning
confidence: 99%