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BEGIN:VEVENT
DTSTAMP:20261020T025330Z
LAST-MODIFIED:20171204T215818Z
DTSTART:20171206T200000Z
DTEND:20171206T210000Z
UID:event1866@bu.edu
URL:http://physics.bu.edu/internal/events/show/1866
SUMMARY:Nucleation in Supercooled Liquids
DESCRIPTION:Featuring Rashi Verma\, Boston University\, Department of Physi
	cs\n\nPart of the Departmental Seminars.\n\nDissertation Committee: William
	 Klein\, Thomas Keyes\, Harvey Gould\, Rama Bansil and Kevin Black\n\nAbstr
	act:\n\nNucleation is the process by which the metastable phase decays into
	 the stable phase. It is widely observed in nature\, and is responsible for
	 many phenomena like cloud formation and crystal growth. The classical theo
	ry of nucleation predicts that the objects that initiate the decay from the
	 metastable to the stable phase are compact droplets of the stable phase. F
	or quenches deep into the metastable phase\, however\, the droplets may be 
	ramified\, with a structure very different from the stable phase. This has 
	significant implications for material properties.\n\nI study nucleation via
	 molecular dynamics simulation of Lennard-Jonesium\, a model system for liq
	uid-solid transformations. The system is quenched from a high temperature\,
	 where the liquid is stable\, to a lower temperature\, where the liquid is 
	metastable\, and allowed to nucleate via fluctuation-driven clusters referr
	ed to as critical droplets. I will present a study of the structure of the 
	critical droplet\, and my attempts to probe it using indirect methods. I wi
	ll show evidence that the presence of a hitherto unstudied 'planar' structu
	re has a significant influence on the nucleation and growth of the critical
	 droplet.\n\n![Rashi](/resources/event-image/1866/9b03dac_small)
LOCATION:SCI 328\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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