Controlled nanoscale mechanical phenomena discovered with ultrafast electron microscopy

David J. Flannigan, Vladimir A. Lobastov, Ahmed H. Zewail

Research output: Contribution to journalArticlepeer-review

38 Scopus citations


On again, off again: The reversible expansion and contraction of single crystals of [Cu(TCNQ)] induced by near-infrared laser pulses was studied with ultrafast electron microscopy (TCNQ = 7,7,8,8-tetracyanoquinodimethane). The crystal expands along the σ-stacking axis of the TCNQ molecules, but not perpendicular to this axis, when exposed to light. The crystal returned to its original structure when the laser light was blocked. (Figure Presented)

Original languageEnglish (US)
Pages (from-to)9206-9210
Number of pages5
JournalAngewandte Chemie - International Edition
Issue number48
StatePublished - Dec 28 2007


  • Charge transfer
  • Copper
  • Electron diffraction
  • Electron microscopy
  • Quinodimethanes

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