Infrared PINEM developed by diffraction in 4D UEM
Abstract
One of the most significant advances made is the ability to visualize nanoscale objects and to determine their shapes (through imaging) and their atomic-scale structure (through diffraction). Furthermore, for optical excitation of the nanostructure the photon-induced near-field EM (PINEM) imaging results in the mapping of nanostructure plasmonics with high spatial–temporal resolution. Here, we show that PINEM can be exploited in the infrared region with greater sensitivity, and that diffraction can be implemented for structural dynamics. Just as importantly, the time resolution of ultrafast EM (UEM), which already far exceeds, by 10 orders of magnitude, that of conventional EM, may be further enhanced by IR PINEM and photon gating with the unprecedented energy resolution (0.63 eV) reported here for UEM.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 04, 2016
- Source ID
- 10.1073/pnas.1600317113
Entities
People
- Ahmed Zewail
- Haihua Liu
- John Spencer Baskin
Organizations
- Air Force Office of Scientific Research
- California Institute of Technology
- National Science Foundation