49 citations · 243 across the 18 of their papers we have counts for
18 papers
Monolithic atom interferometry
Johannes Fiedler, Kim Lefmann, Wolf von Klitzing +1
Atom and, more recently, molecule interferometers are used in fundamental research and industrial applications. Most atom interferometers rely on gratings made from laser beams, wh…
Purcell-induced suppression of superradiance for molecular overlayers on noble atom surfaces
Johannes Fiedler, Kristian Berland, Stefan Yoshi Buhmann
We study the impact of an environment on the electromagnetic responses of a molecule in the presence of a dielectric medium. By applying the dipole-dipole coupling between the mole…
Realistic mask generation for matter-wave lithography via machine learning
Johannes Fiedler, Adrià Salvador Palau, Eivind Kristen Osestad +2
Fast production of large area patterns with nanometre resolution is crucial for the established semiconductor industry and for enabling industrial-scale production of next-generati…
An atom passing through a hole in a dielectric membrane: Impact of dispersion forces on mask-based matter-wave lithography
Johannes Fiedler, Bodil Holst
Fast, large area patterning of arbitrary structures down to the nanometre scale is of great interest for a range of applications including the semiconductor industry, quantum elect…
Self-preserving ice layers on CO2 clathrate particles: implications for Enceladus, Pluto and similar ocean worlds
Mathias Boström, Victoria Esteso, Johannes Fiedler +6
Under both engineering and natural conditions on Earth and in the Universe, some gas hydrates are found to be stabilised outside their window of thermodynamic stability by the form…
Effective screening of medium-assisted Van der Waals interactions between embedded particles
Johannes Fiedler, Michael Walter, Stefan Yoshi Buhmann
The effect of an implicit medium on dispersive interactions of particle pairs is discussed and simple expressions for the correction relative to vacuum are derived. We show that a…
Comparison of theory and experiments on Van der Waals forces in media -- a survey
Friedrich Anton Burger, Robert William Corkery, Stefan Yoshi Buhmann +1
We present a critical overview comparing theoretical predictions and measurements of Van der Waals dispersion forces in media on the basis of the respective Hamaker constants. To q…
Macroscopic Quantum Electrodynamics and Density Functional Theory Approaches to Dispersion Interactions between Fullerenes
Saunak Das, Johannes Fiedler, Oliver Staufert +3
The processing and material properties of commercial organic semiconductors, for e.g. fullerenes is largely controlled by their precise arrangements, specially intermolecular symme…
Non-trivial retardation effects in dispersion forces: From anomalous distance dependence to novel traps
Johannes Fiedler, Kristian Berland, Fabian Spallek +4
In the study of dispersion forces, nonretarded, retarded and thermal asymptotes with their distinct scaling laws are regarded as cornerstone results governing interactions at diffe…
Full-spectrum high resolution modeling of the dielectric function of water
Johannes Fiedler, Mathias Boström, Clas Persson +4
In view of the vital role of water in chemical and physical processes, an exact knowledge of its dielectric function over a large frequency range is important. In this article we r…
Spectroscopy on nanoparticles without light
Johannes Fiedler, Clas Persson, Stefan Yoshi Buhmann
One of the most important tools in modern science is the analysis of electromagnetic properties via spectroscopy. The various types of spectroscopy can be classified by the underly…
Dispersion forces stabilise ice coatings at certain gas hydrate interfaces which prevent water wetting
Mathias Boström, Robert Corkery, Eduardo Lima +6
Gas hydrates formed in oceans and permafrost occur in vast quantities on Earth representing both a massive potential fuel source and a large threat in climate forecasts. They have…
Impact of effective polarisability models on the predicted release dynamics of CH and CO from premelted ice
J. Fiedler, P. Thiyam, F. A. Burger +6
We present a theory for Casimir--Polder forces acting on greenhouse gas molecules dissolved in a thin water film. Such a nanosized film has recently been predicted to arise on th s…
Orientational dependence of the van der Waals interactions for finite-sized particles
Johannes Fiedler, Clas Persson, Mathias Boström +1
Van der Waals forces as interactions between neutral and polarisable particles act at small distances between two objects. Their theoretical origin lies in the electromagnetic inte…
Effective Polarisability Models
Johannes Fiedler, Priyadarshini Thiyam, Anurag Kurumbail +7
Theories for the effective polarisability of a small particle in a medium are presented using different levels of approximation: we consider the virtual cavity, real cavity and the…
Impact of Casimir-Polder interaction on Poisson-spot diffraction at a dielectric sphere
Joshua Leo Hemmerich, Robert Bennett, Thomas Reisinger +5
Diffraction of matter-waves is an important demonstration of the fact that objects in nature possess a mixture of particle-like and wave-like properties. Unlike in the case of ligh…
Probing atom-surface interactions by diffraction of Bose-Einstein condensates
Helmar Bender, Christian Stehle, Claus Zimmermann +5
In this article we analyze the Casimir-Polder interaction of atoms with a solid grating and an additional repulsive interaction between the atoms and the grating in the presence of…
Optical study of superconducting Ga-rich layers in silicon
T. Fischer, A. V. Pronin, R. Skrotzki +6
We performed phase-sensitive terahertz (0.12 - 1.2 THz) transmission measurements of Ga-enriched layers in silicon. Below the superconducting transition, T_{c} = 6.7 K, we find cle…