Electron Waves Operating Throughout Microscopic Silver Bottle
Impressed by the video of the Digital camera Tradition Group ( we puzzled if we may acquire related outcomes however on a a lot smaller scale, and by utilizing electron waves as a substitute of sunshine waves.
A part of our analysis is worried with the propagation of electron density waves, so referred to as floor plasmon polaritons. Such waves can journey throughout noble metallic surfaces with nearly the pace of sunshine (for additional info on plasmon waves and their future prospect in science see, for example, Harry A. Atwater: “The promise of plasmonics”)
Our false shade video reveals electron waves throughout the floor of a microscopic ‘bottle’ which consists of silver. The photographs have been obtained with a photoelectron microscope by illuminating the bottle stroboscopically with ultra-short laser pulses. Under the photoelectron photos a cross-section by the symmetry axis of the bottle is proven. The blue arrows point out the place of the middle of the electron wave packages.
Two electron waves are excited concurrently on the two reverse edges of the bottle and propagate in the direction of the middle. After about 70 femtoseconds they overlap within the middle of the bottle after which separate once more.
The entire video solely takes 130 fs (0.0000000000000130 s) in actual time, which signifies that the electron waves move all the bottle of a size of 38 µm (0.0000038 m) with nearly the pace of sunshine (approx. 95% of c)
The information was obtained on the College of Duisburg-Essen by Philip Kahl and Frank Meyer zu Heringdorf (
Monetary assist for the continuing analysis program on the properties of Floor Plasmon Polaritons is offered by the Deutsche Forschungsgemeinschaft (DFG) by SFB 616 and SPP 1391, and thru the Middle of Nano-Integration Duisburg-Essen (CENIDE).
There’s a new Key Publication addressing the used distinction in 2PPE PEEM:
“Regular-Incidence Photoemission Electron Microscopy (NI-PEEM) for Imaging Floor Plasmon Polaritons”,
P. Kahl, S. Wall, C. Witt, C. Schneider, D. Bayer, A. Fischer, P. Melchior, M. Horn-von Hoegen, M. Aeschlimann, F.-J. Meyer zu Heringdorf”
Plasmonics 9 (2014) pp. 1401-1407