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SUMMARY:Uncovering Molecular Transport Mechanisms by Counting with Colloid
 s - Professor Alice Thorneywork\, University of Oxford
DTSTART:20231115T143000Z
DTEND:20231115T153000Z
UID:TALK203047@talks.cam.ac.uk
CONTACT:Lisa Masters
DESCRIPTION:Sensitively controlling transport across membranes is central 
 to many technologies\, from biomedical sensors and desalination devices to
  the emerging field of iontronics. Rational design of porous materials wit
 h specific transport properties represents an ongoing challenge\, however\
 , partly because unambiguously elucidating transport mechanisms in molecul
 ar level experiments is very difficult. Valuable insights can thus be prov
 ided by experimental models that display analogous physical behaviour but 
 are experimentally much more accessible. Importantly\, such systems allow 
 us to explore both collective\, many particle effects\, and the single par
 ticle behaviours and fluctuations that give rise to them. \n\nIn this talk
 \, I will discuss our work using experimental soft matter models at the me
 soscale to elucidate details of transport processes at the nanoscale\, and
  in particular to understand the nature of fluctuations in these systems. 
 I will first share some recent results taking a fresh look at fluctuations
  in equilibrium colloidal monolayers. Here\, we have combined experiment\,
  simulation and theory to explore how simply counting colloids can reveal 
 details of self and collective dynamics\, uncovering a surprising hydrodyn
 amic enhancement of collective diffusion and a new length scale linked to 
 hyperuniform-like structure [1]. I will then discuss ongoing work to exten
 d this understanding to driven systems\, with the long-term goal of elucid
 ating characteristic fluctuations in our synthetic nanopore systems.    \n
 \n[1] E. K. R. Mackay\, B. Sprinkle\, S. Marbach\, A. L. Thorneywork\, arX
 iv:2311.00647 (2023)\n[2] S. F. Knowles\, et al.\, J. Phys.: Condens. Matt
 er\, 34\, 344001 (2022)\n
LOCATION:Unilever Lecture Theatre\, Yusuf Hamied Department of Chemistry
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