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BEGIN:VEVENT
DTSTAMP:20260812T023311Z
LAST-MODIFIED:20121116T203436Z
DTSTART:20120329T173000Z
DTEND:20120329T183000Z
UID:event882@bu.edu
URL:http://physics.bu.edu/internal/events/show/882
SUMMARY:The Influence of Topology on Sound Propagation in Granular Force Ne
	tworks
DESCRIPTION:Featuring Mason Porter\, University of Oxford\, UK\nHosted by: 
	David Campbell\n\nPart of the Biophysics/Condensed Matter Seminar Series.\n
	\nAbstract: Granular materials exhibit numerous rich and complex dynamics\,
	 which have been investigated from both continuum and particulate perspecti
	ves. In this talk\, I will represent granular materials as spatially-embedd
	ed networks composed of nodes (particles) and weighted edges (contact force
	s between particles) with definite locations in Euclidean space\, and I wil
	l use ideas from network science to provide insights into how sound propaga
	tes through granular materials. By performing experiments with photoelastic
	 particles\, my collaborators and I can quantitatively characterise the int
	ernal force structure\, and the use of a network representation then allows
	 one to probe its effect on sound propagation. I will discuss how network m
	odularity\, a meso-scale property\, characterizes the sound propagation bet
	ter than either system-scale or local-scale network features. I will also d
	emonstrate that geographic community structure of the (weighted) granular f
	orce chain network provides a fundamental constraint on sound propagation.\
	nThis work\, which is available at http://arxiv.org/abs/1110.1858\, is join
	t work with Dani Bassett\, Eli Owens\, and Karen Daniels.
LOCATION:SCI 352\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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