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SUMMARY:Surface Visualization of Bacterial Biofilms using Neutral Atom Mic
 roscopy - Professor Paul Dastoor\, University of Newcastle
DTSTART:20250805T130000Z
DTEND:20250805T140000Z
UID:TALK234982@talks.cam.ac.uk
CONTACT:Boyao Liu
DESCRIPTION:Neutral atom microscopy (NAM) is a new field that uses beams o
 f neutral atoms to image surfaces. The first NAM instrument – the Scanni
 ng Helium Microscope (SHeM) – uses a particle beam of neutral helium ato
 ms to form the image\, rather than photons (light) or electrons. By exploi
 ting the large scattering cross-section of helium to atomic scale surface 
 features\, coupled with its neutral/inert nature and extremely low energy 
 (~ 60 meV)\, the SHeM is a uniquely sensitive imaging technology capable o
 f visualising surfaces entirely non-destructively. The SHeM enables the st
 udy of materials (and their applications) whose visualisation is constrain
 ed\, whether by intrinsic insensitivity\, the requirement for surface trea
 tments/coatings\, or by surface damage altering the material under investi
 gation. Here we present the SHeM imaging of bacterial biofilms\, highlight
 ing its sensitivity to the surface of extracellular polymeric substance ma
 trix in the absence of contrast agents and dyes and without inducing radia
 tive damage.
LOCATION:North Seminar Room\, Ray Dolby Centre\, Cavendish Laboratory
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