Subparticle ultrafast spectrum imaging in 4D electron microscopy

Aycan Yurtsever, Renske van der Veen, Ahmed H. Zewail

Research output: Contribution to journalArticle

Abstract

Single-particle imaging of structures has become a powerful methodology in nanoscience and molecular and cell biology. We report the development of subparticle imaging with space, time, and energy resolutions of nanometers, femtoseconds, and millielectron volts, respectively. By using scanning electron probes across optically excited nanoparticles and interfaces, we simultaneously constructed energy-time and space-time maps. Spectrum images were then obtained for the nanoscale dielectric fields, with the energy resolution set by the photon rather than the electron, as demonstrated here with two examples (silver nanoparticles and the metallic copper-vacuum interface). This development thus combines the high spatial resolution of electron microscopy with the high energy resolution of optical techniques and ultrafast temporal response, opening the door to various applications in elemental analysis as well as mapping of interfaces and plasmonics.

Original languageEnglish (US)
Pages (from-to)59-64
Number of pages6
JournalScience
Volume335
Issue number6064
DOIs
StatePublished - Jan 6 2012
Externally publishedYes

ASJC Scopus subject areas

  • Medicine(all)
  • General

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