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SUMMARY:How is Small different from Big? - Andrew Briggs\, Department of M
 aterials\, The University of Oxford
DTSTART:20241017T140000Z
DTEND:20241017T150000Z
UID:TALK218344@talks.cam.ac.uk
CONTACT:Stephen Walley
DESCRIPTION:Sometimes in physics differences of scale lead to qualitative 
 changes in properties and behaviour\, or at least to a change in the hiera
 rchy of significant parameters. Starting from microscopy of mechanical pro
 perties [1]\,  I shall illustrate this from elastic properties of nanotube
 s [2]\,  growth of semiconductor nanostructures [3]\,  self-oscillations o
 f carbon nanotubes [4]\,  the thermodynamics of time keeping [5]\,  and ma
 chine learning for quantum control [6].  As scientists we have the respons
 ibility and the privilege of advocating the responsible use of the progres
 s to which we contribute [7]. \n\n[1] Acoustic Microscopy. Oxford: Clarend
 on Press (1992\; 2nd Edition 2010)\n[2] Elastic and shear moduli of single
 -walled carbon nanotube ropes. Phys. Rev. Lett. 82\, 944-947 (1999)\n[3] I
 maging the elastic nanostructure of Ge islands by ultrasonic force microsc
 opy. Phys. Rev. Lett. 81\, 1046-1049 (1998)\n[4] A coherent nanomechanical
  oscillator driven by single-electron tunnelling. Nature Physics 16\, 75-8
 2 (2019)\n[5] Measuring the thermodynamic cost of timekeeping. Phys. Rev. 
 X 11\, 021029 (2021)\n[6] Bridging the reality gap in quantum devices with
  physics-aware machine learning. Physical Review X 14\, 011001 (2024)\n[7]
  Human Flourishing: Scientific insight and spiritual wisdom in uncertain t
 imes. Oxford University Press (2021) 
LOCATION:Mott Seminar Room\, Cavendish Laboratory
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