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On the role of the electric dipole moment in the diffraction of biomolecules at nanomechanical gratings

Autor(en)
Christian Knobloch, Benjamin Stickler, Christian Brand, Michele Sclafani, Yigal Lilach, Thomas Juffmann, Ori Cheshnovsky, K. Hornberger, Markus Arndt
Abstrakt

We investigate effects of a permanent electric dipole moment on matter-wave diffraction at nanomechanical gratings. Specifically, the diffraction patterns of hypericin at ultra-thin carbonaceous diffraction masks are compared with those of a polar and a non-polar porphyrin derivative of similar mass and de Broglie wavelength. We present a theoretical analysis of the diffraction of a rotating dipole highlighting that small local electric charges in the material mask can strongly reduce the interference visibility. We discuss the relevance of this finding for single grating diffraction and multi-grating interferometry with biomolecules.

Organisation(en)
Quantenoptik, Quantennanophysik und Quanteninformation
Externe Organisation(en)
Universität Duisburg-Essen, Tel Aviv University
Journal
Fortschritte der Physik
Band
65
Anzahl der Seiten
8
ISSN
0015-8208
DOI
https://doi.org/10.1002/prop.201600025
Publikationsdatum
09-2016
Peer-reviewed
Ja
ÖFOS 2012
103026 Quantenoptik
Schlagwörter
ASJC Scopus Sachgebiete
General, Allgemeine Physik und Astronomie
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/9878f4e8-5683-453b-bee4-0e53e9d89f1f