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UID:DSC-16061
DTSTART;TZID=Europe/Berlin:20190618T170000
SEQUENCE:1560895835
TRANSP:OPAQUE
DTEND;TZID=Europe/Berlin:20190618T183000
URL:https://dresden-science-calendar.de/calendar/de/detail/16061
LOCATION:MPI-CPfS\, Nöthnitzer Straße 4001187 Dresden
SUMMARY:Bini: \"Warm ice and homogeneous melting of an ice crystal: a not s
 o short story\"
CLASS:PUBLIC
DESCRIPTION:Speaker: Prof. Roberto Bini: Università degli Studi di Firenze
 \nInstitute of Speaker: \nTopics:\nMaterialien\n Location:\n  Name: MPI-CP
 fS (Seminarraum 1\, Nöthnitzer Straße 40\, 01187 Dresden)\n  Street: Nö
 thnitzer Straße 40\n  City: 01187 Dresden\n  Phone: \n  Fax: \nDescriptio
 n: Homogeneous melting of crystals is a complex multistep process involvin
 g the formation of transient states at temperatures considerably higher th
 an the melting point. The nature and persistence of these metastable struc
 tures are intimately connected to the melting process and a precise defini
 tion of the temporal boundaries of these phenomena is not yet available. W
 e set up specifically designed experiments to probe by Mie scattering and 
 transient infrared absorption spectroscopy the entire dynamics\, ranging f
 rom tens of picoseconds to milliseconds\, of superheating\, melting and re
 crystallization of an ice crystal. In spite of a large excess of energy pr
 ovided\, only about 30% of the micrometric crystal liquefies in the first 
 20-25 ns because of the incredibly long persistence of the superheated met
 astable phase that extends for more than 100 ns. This behavior is ascribed
  to the population of low energy states that trap a large amount of energy
  favoring the formation of a metastable plastic ice phase.
DTSTAMP:20260423T165757Z
CREATED:20190514T220934Z
LAST-MODIFIED:20190618T221035Z
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