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CATEGORIES:Physics and Chemistry of Solids Group
SUMMARY:How is Small different from Big? - Andrew Briggs\,
  Department of Materials\, The University of Oxfor
 d
DTSTART;TZID=Europe/London:20241017T150000
DTEND;TZID=Europe/London:20241017T160000
UID:TALK218344AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/218344
DESCRIPTION:Sometimes in physics differences of scale lead to 
 qualitative changes in properties and behaviour\, 
 or at least to a change in the hierarchy of signif
 icant parameters. Starting from microscopy of mech
 anical properties [1]\,  I shall illustrate this f
 rom elastic properties of nanotubes [2]\,  growth 
 of semiconductor nanostructures [3]\,  self-oscill
 ations of carbon nanotubes [4]\,  the thermodynami
 cs of time keeping [5]\,  and machine learning for
  quantum control [6].  As scientists we have the r
 esponsibility and the privilege of advocating the 
 responsible use of the progress to which we contri
 bute [7]. \n\n[1] Acoustic Microscopy. Oxford: Cla
 rendon Press (1992\; 2nd Edition 2010)\n[2] Elasti
 c and shear moduli of single-walled carbon nanotub
 e ropes. Phys. Rev. Lett. 82\, 944-947 (1999)\n[3]
  Imaging the elastic nanostructure of Ge islands b
 y ultrasonic force microscopy. Phys. Rev. Lett. 81
 \, 1046-1049 (1998)\n[4] A coherent nanomechanical
  oscillator driven by single-electron tunnelling. 
 Nature Physics 16\, 75-82 (2019)\n[5] Measuring th
 e thermodynamic cost of timekeeping. Phys. Rev. X 
 11\, 021029 (2021)\n[6] Bridging the reality gap i
 n quantum devices with physics-aware machine learn
 ing. Physical Review X 14\, 011001 (2024)\n[7] Hum
 an Flourishing: Scientific insight and spiritual w
 isdom in uncertain times. Oxford University Press 
 (2021) 
LOCATION:Mott Seminar Room\, Cavendish Laboratory
CONTACT:Stephen Walley
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