Seminar: Prof. Joanne Etheridge - Revealing Nanostructures with a Modern Fast Electron: Applications to functional perovskites, semiconducting and plasmonic nanostructures

Tuesday, 17 April 2018 - 12:00pm – Tuesday, 17 April 2018 - 1:00pm  |  CHEMSCI M11

Speaker: Prof. Joanne Etheridge

Recent advances in electron-optics have given us the ability to generate and manipulate highly stable, phase coherent electron wavefields that can be brought to a focal point much smaller than an atom. Coupled with developments in electron scattering theory, these are providing new ways to probe the atomic and electronic structure of materials [1-5]. In particular, they are finding special application in the characterization of nanostructured materials, whose macroscopic properties can depend on a small number of atoms located in critical positions. 

This talk will give an overview of these developments and will illustrate with various applications, including revealing Li-dependent octahedral superlattices in perovskite Li-ion conductors [6]; structure-property relationships in photoactive perovskites [7] and semiconducting nanostructures [8,9]; understanding crystal growth and shape control in metal nanoparticles [10-12]; mapping surface plasmon polaritons in metallic nanostructures [13]; and ‘imaging’ the distribution of electrons as they scatter within an atomic lattice.

  1. Etheridge, Lazar, Dwyer, Botton,     Physical Review Letters 106 160802 (2011)          
  2. Zheng, Zhu, Lazar, Etheridge    Physical Review Letters 112 166101 (2014)
  3. Zheng, Petersen, Kirmse, Morgan, Etheridge    Physical Review Letters 119 17 174801 (2017)
  4. Nakashima, Moodie, Etheridge,    PNAS 110 14144 (2013)
  5. Nakashima, Smith, Etheridge, Muddle    Science 331, 1583 (2011)
  6. Zhu, Withers, Bourgeois, Dwyer, Etheridge       Nature Materials 14 1142 (2015) 
  7. Rothmann, Li, Zhu, Bach, Spiccia, Etheridge, Cheng YB     Nature Comms 8 14547 (2017)
  8. Shi, Jackson, Smith, Jiang, Gao, Tan, Jagadish, Zheng Etheridge  Nano Letts 15 1876 (2015)
  9. Zheng, Wong-Leung, Gao, Tan, Jagadish, Etheridge     Nano Letts13, 3742 2013
  10. Acc Chem Res 50 2925 (2017)
  11.  Nano Letts 15 1635 (2015)
  12.    ACS Nano 9 715 (2015)
  13.  ACS Nano 11 11383 (2017)