BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//RLASKEY//CALENDEROUS//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20260816T162238Z
LAST-MODIFIED:20151117T171137Z
DTSTART:20151201T203000Z
DTEND:20151201T213000Z
UID:event1473@bu.edu
URL:http://physics.bu.edu/internal/events/show/1473
SUMMARY:Providing valence to colloids: equilibrium gels and ultrastable liq
	uids
DESCRIPTION:Featuring Francesco Sciortino\, Universita' di Roma\nHosted by:
	 H. Eugene Stanley\n\nPart of the Physics Department Colloquia Series.\n\nB
	eside their technological applications\, colloids have provided us with tun
	able model systems for exploring thermodynamic and kinetic phenomena of fun
	damental value. The hard-sphere crystallization\, the glass transition\, th
	e range-controlled thermodynamic existence of the liquid state are beautifu
	l examples of exploiting the "large atom" nature of colloids. In the last t
	en years\, a significant effort has been put in the direction of providing 
	valence to colloids\, to move from colloidal atoms to colloidal molecules. 
	Many experimental\, theoretical and numerical efforts have been devoted to 
	the synthesis and to the investigation of these anisotropic colloids.\n\nIn
	 the talk I will focus on exploiting the possibility of controlling the int
	eraction between colloidal particles to tackle fundamental issues in the mo
	lecular world. In particular I will discuss how some recent experimental te
	st of the role of the valence in controlling the gas-liquid transition\, th
	e dynamics of formation of an equilibrium gel\, and the thermodynamic stabi
	lity of the gel phase respect to crystallization. I will show that for patc
	hy colloids with limited valence\, conditions can be found for which the li
	quid phase is stable even in the zero-temperature limit. Limited valence co
	lloids appear to be good candidates for providing insights in the dynamic a
	rresting behavior of strong network-forming liquids\, like silica and silic
	on.\n\nFinally\, I will present some very recent work where we elucidate\, 
	using colloidal models\, the possibility of a liquid-liquid transition in w
	ater.
LOCATION:SCI 109\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
END:VEVENT
END:VCALENDAR