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Seminars, socials and events of interest to Department members are listed below, with the next seven days listings also being shown on the Reception area screen. Please visit the Intranet to complete the online form to register your event (please note entries are moderated/approved prior to appearing).


  • 23Nov

    Goldsmiths Lecture Room 1

    Dr Zhun-Yong Ong from the Institute of High Performance Computing Singapore will be giving a Materials Modelling Seminar.  All are welcome to attend.

    Abstract:
    The diffusion of heat across the boundary between two insulating crystalline solids is controlled by its Kapitsa (thermal) resistance, which is determined at the microscopic level by the reflection and transmission of quantised lattice vibrations (i.e. phonons), and depends strongly on the crystallographic microstructure of the interface. However, our conceptualisation of phonon scattering by the interface relies heavily on analogies from wave optics and acoustics, and remains limited by the lack of computationally efficient methods  or quantifying the transmission and reflection of individual phonons, constraining our ability to analyse the theoretical connection between phonon scattering and interfacial microstructure. 

    In this talk, I discuss how these difficulties can be overcome by extending the Atomistic Green's Function method that is commonly used to study ballistic phonon transport. I first show how the Kapitsa resistance phenomenon can be treated as a scattering (S-matrix)  roblem within the familiar conceptual framework of conventional quantum  mechanics. This approach allows us to employ existing theoretical machinery, originally developed for studying quantum transport in open systems, as the basis for our extension of the Atomistic Green's Function (AGF) method.Our extension of the AGF method enables the precise calculation of transition amplitudes between phonon channels (i.e. the individual elements of the S-matrix) and yields insights into the dependence of the transmission and reflection  oefficients on interfacial microstructure as well as phonon frequency, momentum and polarisation. Other possible applications of our extended AGF approach include the lattice defect and edge scattering of phonons. To illustrate the utility of this method, we present some  imulation results and analysis, obtained using inputs from ab initio calculations, for the MoS2/WS2 interface and isotopically non-uniform graphene. The concepts and numerical techniques developed in our approach may be potentially useful for analogous scattering  roblems in other areas such as tight-binding models, photonics and acoustics.

  • 06Dec

    Goldsmiths 2

    Speaker: Bhasi Nair. All welcome.

    Starting: 1.15pm (25 mins + 5 mins questions)

  • 12Dec

    Howard Building, Downing College

    Tickets cost £10 (this is a subsidised price thanks to many Department research groups) and will be available from the Servery. The number will be capped at 90, so it's advisable to buy early. Please retain the ticket - not only to get in, but also because purchase gives free entry to the Xmas raffle (which will be based on the ticket number).

    Music provided by Steve Watts (DJ) and Garance with her Jazz band, buffer meal, cash bar. Guests welcome.

  • 15Dec

    Goldsmiths 1

    Prof Mark Blamire would like to invite you all to the Departmental Meeting on Friday 15th December 2017 at 10am, in Goldsmiths’ Lecture Theatre 1. This is a meeting aimed primarily at Assistant and Support Staff. Dr Rachel Evans will give a presentation about her research.  Please come along and hear about the highlights of the year. 

  • 12Jun

    Pippard Lecture Theatre, Department of Physics, Cavendish Laboratory, JJ Thomson Avenue, Cambridge CB3 0HE

    The afternoon programme of talks begins at 1.45 (registration from 1.15 pm) at the Pippard Lecture Theatre, Department of Physics, Cavendish Laboratory, JJ Thomson Avenue, Cambridge CB3 0HE. The Forum includes the award of the Armourers & Brasiers’ Materials Science Venture Prize and the 20th Kelly Lecture.