93 citations · 390 across the 17 of their papers we have counts for
17 papers
Platform and Framework for Time-Resolved Nanoscale Thermal Transport Measurements in STEM
Mairi McCauley, Joel Martis, Ondrej L. Krivanek +12
Understanding heat transport at the nanometer scale is critical for semiconductor devices, quantum materials, and thermal management of nanostructures, yet direct local measurement…
Double helical plasmonic antennas
Aleksei Tsarapkin, Luka Zurak, Krzysztof Maćkosz +5
Plasmonic double helical antennas are a means to funnel circularly polarized light down to the nanoscale. Here, an existing design tool for single helices is extended to the case o…
Direct electron beam writing of silver using a -diketonate precursor: first insights
Katja Höflich, Krzysztof Mackosz, Chinmai S. Jureddy +2
Direct electron beam writing is a powerful tool for fabricating complex nanostructures in a single step. The electron beam locally cleaves the molecules of an adsorbed gaseous prec…
Chiral and directional optical emission from a dipole source coupled to a helical plasmonic antenna
Lilli Kuen, Lorenz Löffler, Aleksei Tsarapkin +4
Plasmonic antennas with helical geometry are capable transducers between linearly polarized dipole emission and purely circular polarized far-fields. Besides large Purcell enhancem…
Area Selective Chemical Vapor Deposition of Gold by Electron Beam Seeding
Aleksei Tsarapkin, Krzysztof Maćkosz, Chinmai Sai Jureddy +2
Chemical vapour deposition (CVD) is an established method for producing high-purity thin films, but it typically necessitates the pre- and post-processing of a mask to produce stru…
Individual Nanostructures in an Epsilon-Near-Zero Material Probed with 3D-Sculpted Light
Brian Kantor, Lisa Ackermann, Victor Deinhart +3
Epsilon-near-zero (ENZ) materials, i.e., materials with a vanishing real part of the permittivity, have become an increasingly desirable platform for exploring linear and nonlinear…
Evolutionary Optimized, Monocrystalline Gold Double Wire Gratings as a SERS Sensing Platform
Amro Sweedan, Mariela J. Pavan, Enno Schatz +7
Achieving reliable and quantifiable performance in large-area surface-enhanced Raman spectroscopy (SERS) substrates has long been a formidable challenge. It requires substantial si…
Towards tunable graphene phononic crystals
Yuefeng Yu, Jan N. Kirchhof, Aleksei Tsarapkin +5
Phononic crystals (PnCs) are artificially patterned media exhibiting bands of allowed and forbidden zones for phonons. Many emerging applications of PnCs from solid-state simulator…
Roadmap for focused ion beam technologies
Katja Höflich, Gerhard Hobler, Frances I. Allen +29
The focused ion beam (FIB) is a powerful tool for the fabrication, modification and characterization of materials down to the nanoscale. Starting with the gallium FIB, which was or…
Deterministic Generation and Guided Motion of Magnetic Skyrmions by Focused He-Ion Irradiation
L. -M. Kern, B. Pfau, V. Deinhart +17
Magnetic skyrmions are quasiparticles with non-trivial topology, envisioned to play a key role in next-generation data technology while simultaneously attracting fundamental resear…
Selective-area van der Waals epitaxy of h-BN/graphene heterostructures via He irradiation-induced defect-engineering in 2D substrates
Martin Heilmann, Victor Deinhart, Abbes Tahraoui +2
The combination of two-dimensional (2D) materials into heterostructures enabled the formation of atomically thin devices with designed properties. To achieve a high density, bottom…
Neutral and charged excitons interplay in non-uniformly strain-engineered WS
Sviatoslav Kovalchuk, Moshe G. Harats, Guillermo López-Polín +3
We investigate the response of excitons in two-dimensional semiconductors subjected to controlled non-uniform strain fields. In our approach to non-uniform strain-engineering, a WS…
Interaction of light carrying orbital angular momentum with a chiral dipolar scatterer
Paweł Woźniak, Israel De León, Katja Höflich +2
The capability to distinguish the handedness of circularly polarized light is a well-known intrinsic property of a chiral nanostructure. It is a long-standing controversial debate,…
The resonant behavior of a single plasmonic helix
K. Höflich, Th. Feichtner, E. Hansjürgen +4
Chiral plasmonic nanostructures will be of increasing importance for future applications in the field of nano optics and metamaterials. Their sensitivity to incident circularly pol…
Chiroptical response of a single plasmonic nanohelix
Paweł Woźniak, Israel De Leon, Katja Höflich +4
We investigate the chiroptical response of a single plasmonic nanohelix interacting with a weakly-focused circularly-polarized Gaussian beam. The optical scattering at the fundamen…
Plasmonic Gold Helices for the visible range fabricated by oxygen plasma purification of electron beam induced deposits
Caspar Haverkamp, Katja Höflich, Sara Jäckle +2
Electron beam induced deposition (EBID) currently provides the only direct writing technique for truly three-dimensional nanostructures with geometrical features below 50 nm. Unfor…
Unveiling the optical properties of a metamaterial synthesized by electron-beam-induced deposition
Paweł Woźniak, Katja Höflich, Gerald Brönstrup +3
The direct writing using a focused electron beam allows for fabricating truly three-dimensional structures of sub-wavelength dimensions in the visible spectral regime. The resultin…