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SUMMARY:Identifying Order in space and time : Glassy materials and hidden 
 structure - Dr Robert Jack\, DAMTP and Dept of Chemistry
DTSTART:20200129T193000Z
DTEND:20200129T203000Z
UID:TALK137125@talks.cam.ac.uk
CONTACT:Tommy Tai
DESCRIPTION:We know well that ice is a crystal where molecules are arrange
 d in a regular pattern\, while water is a liquid where molecules have a di
 sordered arrangement. Also\, water flows\, while ice is a solid. There is 
 a natural physical theory that links the crystalline order of ice to its s
 olid properties. However\, this theory fails for materials like window gla
 ss\, which manage to be physically solid\, without crystalline order. Some
  modern theories aim to explain this by the concept of "amorphous order" -
 - they say that glass is an ordered material\, but the order is not appare
 nt to our eye. Other theories argue that the relevant order can only be se
 en if one looks at the system in space-time\, instead of regular space. Th
 is remains a controversial area of science\, despite the fact that glassy 
 materials have been used by humans for thousands of years.\n\nI use these 
 examples to discuss some unusual types of Order in physical theories\, and
  how this can be quantified.\n\nAbout the Speaker: Dr Robert Jack is an in
 terdisciplinary Lecturer with a joint appointment between the Dept of Chem
 istry and DAMTP.  His research uses the theory of statistical mechanics to
  understand the behaviour of complex systems including biomolecules\, glas
 sy liquids\, and soft matter.  In particular\, he is interested in co-oper
 ative dynamics: for example\, how do molecules move in crowded environment
 s?  What are the co-operative mechanisms for colloidal self-assembly\, and
  the folding of biomolecules?
LOCATION:Wolfson Lecture Theatre\,  Department of Chemistry\, Lensfield Ro
 ad
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