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SUMMARY:New Approaches to Characterise the Surface and Bulk Compositions o
 f Picolitre Droplets - Dr Bryan Bzdek\, University of Bristol
DTSTART:20250225T140000Z
DTEND:20250225T150000Z
UID:TALK222157@talks.cam.ac.uk
CONTACT:David Madden
DESCRIPTION:Aerosols are unique microcompartments central to areas as dive
 rse as climate and air pollution\, disease transmission\, and chemical syn
 thesis. Resolving their roles in each of these areas is challenging. For i
 nstance\, the surface composition of aerosol droplets is key to predicting
  cloud droplet number concentrations\, understanding atmospheric pollutant
  transformation\, and interpreting observations of accelerated droplet che
 mistry. However\, direct measurement of the surface properties of aerosol 
 droplets is challenging\, even though such measurements are necessary\, as
  surface-bulk partitioning is strongly affected by the droplet’s surface
  area-to-volume ratio. In this presentation\, we will discuss new advances
  to characterise the equilibrium and dynamic surface properties of picolit
 re volume droplets\, gaining important insights that bear directly on our 
 understanding of how cloud droplets form in the atmosphere and how chemica
 l reactions may proceed in finite-volume systems. We will also describe a 
 new mass spectrometry approach enabling sensitive\, high throughput chemic
 al analysis of picolitre droplets\, facilitating more robust studies of th
 e factors governing chemical reactivity in microcompartments.\n\nBio: Brya
 n Bzdek is Proleptic Associate Professor in the School of Chemistry\, Univ
 ersity of Bristol. He earned a B.S. degree in Chemistry at Bucknell Univer
 sity and a Ph.D. in Chemistry at the University of Delaware. He performed 
 postdoctoral studies with Jonathan P. Reid\, and then began his independen
 t career at the University of Bristol in 2017 as a NERC Independent Resear
 ch Fellow. His research on the physical and analytical chemistry of aeroso
 ls spans applications in atmospheric science and health. He is a recipient
  of the Kenneth T. Whitby (2024) Award from the American Association for A
 erosol Research\, the Marlow Prize (2023) from the Royal Society of Chemis
 try\, and the Philip Leverhulme Prize (2022) from the Leverhulme Trust. Du
 ring the COVID-19 pandemic\, his research altered UK government guidance i
 n the performing arts and the NHS infection prevention and control manual.
  He also gave many print and radio interviews about aerosols and COVID-19 
 to organisations including US public radio\, BBC\, CBS\, and CNN.
LOCATION:Pfizer  Lecture Theatre\,  Department of Chemistry
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