Vliyanie razmernykh effektov na fazovye perekhody v sistemakh s nanoobjektami

0380575 - ÚCHP 2013 RIV BY rus C - Konferenční příspěvek (zahraniční konf.)
Levdansky, V.V. - Smolík, Jiří - Ždímal, Vladimír - Moravec, Pavel
Vliyanie razmernykh effektov na fazovye perekhody v sistemakh s nanoobjektami.
[Influence of Size Effects on Phase Transitions in System with Nanoobjects.]
Tezisy dokladov i soobschenii. Minsk: Institut teplo- i massoobmena A.V.Lykova NAN Belarusi, 2012, s. 637-638. ISBN 978-985-6456-82-7.
[Minskii mezhunarodnyi forum po teplo- i massoobmenu /14./. Minsk (BY), 10.09.2012-13.09.2012]
Grant CEP: GA ČR GA101/09/1633; GA AV ČR IAA200760905
Institucionální podpora: RVO:67985858
Klíčová slova: nanoobjects * evaporation * liquid droplet-catalyst
Kód oboru RIV: BJ - Termodynamika

Teoreticheski issleduetsya vliyanie razmernykh effektov na fazovye perekhody kak na poverkhnosti, tak i b objeme nanoobjektov. Sovmestnoe vlyanie ukazzanykh effektov rassmatrivaetsya na primere prizvodstva kremnievnykh nanoviskerov. Pokazano, chto razmernye effekty, vliyayuschie na protsessy ispareniya-kondensatcii atomov kremniya na poverkhnosti nanorazmernoi kapli-katalizatora (rastvor zoloto-kremnii), i razmernye effekty, proyavlyayuschiesya pri nukleatsiyu kremniya v kaple-katalizatore, deistvuyut na skorosť rosta nanoviskera v protivopolozhnykh napravleniyakh.

The influence of size effects on phase stransitions on the surface and in the volume of nanoobjects is investigated theoretically. The joint influence of mentioned effects on physicochemical processes in nanoobjects is illustrated by the example of the production of silicon nanowhiskers. It is shown that size effects affecting evaporation and condensation of silicon atoms on the surface of the nanoscale liquid droplet-catalyst (gold-silicon solution) and size effects that are manifested in silicon nucleation inside the droplet-catalyst act on the nanowhisker growth rate in opposite directions.
Trvalý link: http://hdl.handle.net/11104/0211244