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