About: Detection and characterization of structural changes in the hard-disk fluid under freezing and melting conditions

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About: Detection and characterization of structural changes in the hard-disk fluid under freezing and melting conditions Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Tekutina tuhých disků je pro řadu hustot zkoumána počítačovými simulacemi metodou Monte Carlo z důvodu nalezení a charakterizace strukturních změn, které nastávají za podmínek blízkých tuhnutí a tání systému. Je představena nová metoda založená na Voronoiově teselaci a tvarovém faktoru, který se jeví jako jasný indikátor existence podstruktur (domén). V blízkosti podmínky tuhnutí se v rozdělení tvarového faktoru objevuje druhé oddělené maximum odpovídající převládajícím téměř pravidelným šestiúhelníkům zatímco se původní vrchol, mající původ v nepravidelných n-úhelnících, snižuje a zanikne při hustotě tání. (cs) The fluid of two-dimensional hard disks is investigated over a range of densities by Monte Carlo simulations in order to detect and characterize structural changes which take place when the condition of freezing and melting is approached. A novel method is proposed based on the use of the Voronoi tessellation and a certain shape factor which turns out to be a clear indicator of the presence of different underlying substructures (domains). Close to the freezing condition the probability distribution of the shape factor develops a second distinct maximum corresponding to a predominant presence of near-regular hexagons, whereas the original peak, having its origin primarily in pentagons and distorted hexagons, diminishes and disappears at melting density. The fluid of two-dimensional hard disks is investigated over a range of densities by Monte Carlo simulations in order to detect and characterize structural changes which take place when the condition of freezing and melting is approached. A novel method is proposed based on the use of the Voronoi tessellation and a certain shape factor which turns out to be a clear indicator of the presence of different underlying substructures (domains). Close to the freezing condition the probability distribution of the shape factor develops a second distinct maximum corresponding to a predominant presence of near-regular hexagons, whereas the original peak, having its origin primarily in pentagons and distorted hexagons, diminishes and disappears at melting density. (en)
Title	Detection and characterization of structural changes in the hard-disk fluid under freezing and melting conditions Detection and characterization of structural changes in the hard-disk fluid under freezing and melting conditions (en) Detekce a charakterizace změn struktury tekutiny tuhých disků v blízkosti podmínek tuhnutí/tání (cs)
skos:prefLabel	Detection and characterization of structural changes in the hard-disk fluid under freezing and melting conditions Detection and characterization of structural changes in the hard-disk fluid under freezing and melting conditions (en) Detekce a charakterizace změn struktury tekutiny tuhých disků v blízkosti podmínek tuhnutí/tání (cs)
skos:notation	RIV/44555601:13440/05:00003320!RIV07-AV0-13440___
http://linked.open.../vavai/riv/strany	040601
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(1ET400720409)
http://linked.open...iv/cisloPeriodika	94
http://linked.open...vai/riv/dodaniDat	2007
http://linked.open...aciTvurceVysledku	Nezbeda, Ivo
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Jana Evangelisty Purkyně v Ústí nad Labem / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	517462
http://linked.open...ai/riv/idVysledku	RIV/44555601:13440/05:00003320
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	hard disk fluid; structure; phase transition; Voronoi tessellation; shape factor (en)
http://linked.open.../riv/klicoveSlovo	shape factor phase transition structure Voronoi tessellation hard disk fluid
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[FDB50073C643]
http://linked.open...i/riv/nazevZdroje	Physical Review Letters
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Applicationof advanced simulation methods for studying the structure, physico-chemical properties, and preparationof composites and nanomaterials
http://linked.open...UplatneniVysledku	2005
http://linked.open...iv/tvurceVysledku	Nezbeda, Ivo Moučka, F.
issn	0031-9007
number of pages	1 (xsd:int)
http://localhost/t...ganizacniJednotka	13440
is http://linked.open...avai/riv/vysledek of	Detection and characterization of structural changes in the hard-disk fluid under freezing and melting conditions

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