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UID:69dc166c72227
DTSTAMP:20260412T180220
DTSTART:20170227T113000
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URL:https://murmitoyen.com/events/vanille/udem/detail/743435-charge-transpo
 rt-in-action-n-or-why-atomic-force-microscopy-is-much-more-than-pretty-ima
 ges-peter-grutter-mcgill
LOCATION:Université de Montréal - Pavillon J.-Armand-Bombardier\, 5155\, 
 chemin de la rampe \, Montréal\, QC\, Canada\, H3T 2B2
SUMMARY:Charge transport in action – or why Atomic Force Microscopy is mu
 ch more than pretty images - Peter Grutter (McGill)
DESCRIPTION:Charge transport in action – or why Atomic Force Microscopy i
 s much more than pretty imagesPeter Grutter\, Physics Department\, McGill

 \nabstract: Atomic Force Microscopy (AFM) is a technique that allows atom
 ic scale spatial resolution on essentially any material\, including insula
 tors and metals\, in essentially any environment: from ultra high vacuum t
 o liquids\, at temperatures of several 100K down to mK.  These images all
 ow extraction of detailed structural information\, in particular when comb
 ined with state of the art modeling. Many properties\, such as electrical 
 surface potential\, elasticity\, yield stress\, adhesion or friction can b
 e measured and correlated to structure\, often as a function of external p
 arameters such as light or electrochemical potential. Completing this ‘n
 anolab’ is the capability of AFM to manipulate objects. In this seminar 
 I will concentrate on structure-property AFM experiments that can give us 
 fundamental insights in fields which have major potential for important ap
 plications. Some of the fundamental questions we are trying to address are
 : how is charge separated in organic photovoltaics? What determines Li mob
 ility in batteries? How does the electrical conductivity of a nanometer sc
 ale contact depend on mechanical properties? What induces the formation of
  a synapse in a neuron? In particular\, I will focus on techniques recentl
 y developed in my lab allowing time resolved measurements of properties us
 ing AFM down to time scales below 1ps.  By describing my research group
 ’s ongoing attempts to find answers to these questions I will also demon
 strate how state-of-the-art AFM goes well beyond being a tool to make ‘p
 retty’ images.
\nPour en savoir plus au sujet des activités de recherch
 e du Prof. Grutter\, consulter la page web de son groupe.
\nCette confére
 nce est présentée par le RQMP Versant Nord du Département de physiqu
 e de l'Université de Montréal et de Génie physique de la Polytechniq
 ue.
\n 
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