Catalysis of impurities coalescence by quantized vortices in superfluid helium with nanofilaments formation

• Дата: 2009
• Автори: Gordon, E.B., Okuda, Y.
• Формат: Стаття
• Мова: English
• Опубліковано: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2009
• Назва видання: Физика низких температур
• Теми: Квантовые жидкости и квантовые кpисталлы
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/116993
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Catalysis of impurities coalescence by quantized vortices in superfluid helium with nanofilaments formation / E.B. Gordon, Y. Okuda // Физика низких температур. — 2009. — Т. 35, № 3. — С. 278-283. — Бібліогр.: 14 назв. — англ.

The dramatic effect of quantized vortices in superfluid helium on the rate of coalescence of suspended impurities has been predicted; such catalytic process should result in formation of fiber-like structures having primarily nanothickness. That should be valid for any impurity and it may be used as a base for the universal method of nanowires and nanotubes producing. The experiments on molecular hydrogen imbedding into liquid helium supported these conclusions. They showed that: (i) in normal liquid He the coalescence led to formatting spherical microparticles carried by turbulent motion of a liquid; (ii) in the superfluid only very long filaments were observed, they behaved as quantized vortices should do. These filaments are fiber-like hydrogen crystals and they survived liquid helium transition to normal state. The promises for using this phenomenon in basic and applied sciences have been outlined.