How is Small different from Big?

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• Andrew Briggs, Department of Materials, The University of Oxford
• Thursday 17 October 2024, 15:00-16:00
• Mott Seminar Room, Cavendish Laboratory.

If you have a question about this talk, please contact Stephen Walley.

Livestream using Teams. Meeting ID: 315 430 872 95. Passcode: JCk2AZ

Sometimes in physics differences of scale lead to qualitative changes in properties and behaviour, or at least to a change in the hierarchy of significant parameters. Starting from microscopy of mechanical properties [1], I shall illustrate this from elastic properties of nanotubes [2], growth of semiconductor nanostructures [3], self-oscillations of carbon nanotubes [4], the thermodynamics of time keeping [5], and machine learning for quantum control [6]. As scientists we have the responsibility and the privilege of advocating the responsible use of the progress to which we contribute [7].

[1] Acoustic Microscopy. Oxford: Clarendon Press (1992; 2nd Edition 2010) [2] Elastic and shear moduli of single-walled carbon nanotube ropes. Phys. Rev. Lett. 82, 944-947 (1999) [3] Imaging the elastic nanostructure of Ge islands by ultrasonic force microscopy. Phys. Rev. Lett. 81, 1046-1049 (1998) [4] A coherent nanomechanical oscillator driven by single-electron tunnelling. Nature Physics 16, 75-82 (2019) [5] Measuring the thermodynamic cost of timekeeping. Phys. Rev. X 11 , 021029 (2021) [6] Bridging the reality gap in quantum devices with physics-aware machine learning. Physical Review X 14 , 011001 (2024) [7] Human Flourishing: Scientific insight and spiritual wisdom in uncertain times. Oxford University Press (2021)

This talk is part of the Physics and Chemistry of Solids Group series.

This talk is included in these lists:

• All Cavendish Laboratory Seminars
• All Talks (aka the CURE list)
• Centre for Health Leadership and Enterprise
• Featured lists
• ME Seminar
• Mott Seminar Room, Cavendish Laboratory
• Neurons, Fake News, DNA and your iPhone: The Mathematics of Information
• Physics and Chemistry of Solids Group
• School of Physical Sciences
• Thin Film Magnetic Talks

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