| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Emergent Materials under Extremes and Decisive In Situ Characterizations
|
| Presentation Title |
High Spatiotemporal Characterization of Light-Matter Interactions by UEM |
| Author(s) |
Haihua Liu, Thomas E. Gage, Ilke Arslan |
| On-Site Speaker (Planned) |
Haihua Liu |
| Abstract Scope |
Ultrafast Electron Microcopy (UEM) is a powerful tool to study ultrafast dynamics of light-matter interactions in physics, chemistry and materials science with temporal resolution of hundreds of femtoseconds. We established a state-of-art UEM user facility at the Center for Nanoscale Materials (CNM), Argonne National Laboratory. We will introduce the UEM’s capabilities at CNM and present research examples of ultrafast light-matter interactions dynamics at high spatiotemporal resolutions. Besides the capabilities of imaging and diffraction, the UEM at the CNM was equipped with a Gatan Imaging Filter spectrometer, which enables it to work in energy filtering mode and characterize the near field of surface plasmon resonance. Here, we investigated the excitation and manipulation of Localized Surface Plasmon Resonances at surface of metal nanoparticles and propagating Surface Plasmon Polaritons at the interface of metal and dielectric by UEM and their dependence on laser wavelength, polarization, fluence at nanometer and sub-picosecond time scales. |