Objetivo "Water is ubiquitous and so an understanding of water’s anomalous liquid state is crucial for such diverse fields as protein biochemistry, meteorology or astrophysics. A postulated first order phase transition between two distinct one-component liquids at low temperatures is believed to be the key to many riddles in contemporary science: a “fragile” liquid of high density and a “strong” liquid of low density. At higher temperatures the phase boundary might end in a speculative second critical point in supercooled water. Unfortunately it has not been possible so far to support/falsify these hypotheses with direct experiments because of fast crystallization of the liquid(s) in the relevant portion of the phase diagram, which is called ""no man's land"". Therefore, experiments to test the hypothesis were previously done in the non-crystalline, solid state (“amorphous water”) at temperatures well below the ""no man's land"". More than 20 years ago liquid-like relaxation was measured on heating glassy water at 1 bar to 136 - 150 K, i.e. to temperatures slightly below crystallization, which is still discussed controversially. Recently we managed to observe liquid-like properties on heating high density amorphous ice (HDA) under isobaric conditions at pressures up to 1 GPa above its glass-liquid transition at a temperature slightly below the ""no man's land"" without observing significant crystallization. These findings open the exciting possibility to characterize (e.g. by dilatometry, thermal analysis and dielectric spectroscopy) deeply supercooled liquid water both at ambient and high pressure conditions and to check if water indeed shows a first order liquid-liquid phase transition between two distinct liquids. This will unravel the question how many liquids and how many corresponding amorphous states there are in water, and if VHDA discovered by us in 2001 shows a polyamorphic transition to HDA, or if it is simply annealed HDA." Ámbito científico natural sciencesearth and related environmental sciencesatmospheric sciencesmeteorologynatural sciencesbiological sciencesbiochemistrybiomoleculesproteinsnatural sciencesphysical sciencesastronomyastrophysicsnatural scienceschemical sciencesanalytical chemistrycalorimetrynatural sciencesphysical sciencesopticsspectroscopy Palabras clave glass-liquid transition Programa(s) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Tema(s) ERC-SG-PE3 - ERC Starting Grant - Condensed matter physics Convocatoria de propuestas ERC-2007-StG Consulte otros proyectos de esta convocatoria Régimen de financiación ERC-SG - ERC Starting Grant Institución de acogida UNIVERSITAET INNSBRUCK Aportación de la UE € 1 389 238,00 Dirección INNRAIN 52 6020 Innsbruck Austria Ver en el mapa Región Westösterreich Tirol Innsbruck Tipo de actividad Higher or Secondary Education Establishments Investigador principal Thomas Loerting (Dr.) Contacto administrativo Robert Rebitsch (Dr.) Enlaces Contactar con la organización Opens in new window Sitio web Opens in new window Coste total Sin datos Beneficiarios (1) Ordenar alfabéticamente Ordenar por aportación de la UE Ampliar todo Contraer todo UNIVERSITAET INNSBRUCK Austria Aportación de la UE € 1 389 238,00 Dirección INNRAIN 52 6020 Innsbruck Ver en el mapa Región Westösterreich Tirol Innsbruck Tipo de actividad Higher or Secondary Education Establishments Investigador principal Thomas Loerting (Dr.) Contacto administrativo Robert Rebitsch (Dr.) Enlaces Contactar con la organización Opens in new window Sitio web Opens in new window Coste total Sin datos
