A5035645344- Gold and Silver Nanoparticles Synthesis and Applications
- Plasmonic and Surface Plasmon Research
- Photonic Crystals and Applications
- Advanced Electron Microscopy Techniques and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Electron and X-Ray Spectroscopy Techniques
- Quantum and electron transport phenomena
- Topological Materials and Phenomena
- Near-Field Optical Microscopy
- Quantum Dots Synthesis And Properties
- Photonic and Optical Devices
- Advanced X-ray Imaging Techniques
- Random lasers and scattering media
- Graphene research and applications
- Covalent Organic Framework Applications
- Nonlinear Optical Materials Studies
- Metal-Organic Frameworks: Synthesis and Applications
- Carbon Nanotubes in Composites
- Orbital Angular Momentum in Optics
- Advanced Photocatalysis Techniques
- Spectroscopy and Quantum Chemical Studies
- Seismic Waves and Analysis
- Integrated Circuits and Semiconductor Failure Analysis
- Nanofabrication and Lithography Techniques
- Quantum, superfluid, helium dynamics
Leibniz Institute for Solid State and Materials Research
2018-2025
Institute for Solid State Physics and Optics
2020
TU Dresden
2018
Ionwerks (United States)
2016
Abstract Imprint lithography has emerged as a reliable, reproducible, and rapid method for patterning colloidal nanostructures. As promising alternative to top‐down lithographic approaches, the fabrication of nanodevices thus become effective straightforward. In this study, fusion interference (IL) nanosphere imprint on various target substrates ranging from carbon film transmission electron microscope grid inorganic dopable polymer semiconductor is reported. 1D plasmonic photonic crystals...
Chains of metallic nanoparticles sustain strongly confined surface plasmons with relatively low dielectric losses. To exploit these properties in applications,such as waveguides, the fabrication long chains disorder and a thorough understanding plasmon-mode properties, such dispersion relations, are indispensable. Here, we use wrinkled template for directed self-assembly to assemble gold nanoparticles. With this up-scalable method, chain lengths from two particles (140 nm) 20 (1500 beyond...
Near-infrared (NIR) controlled drug delivery systems have drawn a lot of attention throughout the past few decades due to deep penetration depth and comparatively minor side effects stimulus. In this study, we introduce an innovative approach for gastric cancer treatment by combining photothermal infrared-sensitive gold nanorods (AuNRs) with conjugated microporous polymer (CMP) create system tailored transporting cytostatic 5-fluorouracil (5-FU). CMPs are fully networks high internal surface...
Plasmonic nanostructures and -devices are rapidly transforming light manipulation technology by allowing to modify enhance optical fields on sub-wavelength scales. Advances in this field rely heavily the development of new characterization methods for fundamental nanoscale interactions. However, direct quantitative mapping transient electric magnetic characterizing plasmonic coupling has been proven elusive date. Here we demonstrate how directly measure inelastic momentum transfer surface...
The developed three-step synthesis of plasmonic gold nanoparticles allows outstanding control over their growth kinetic, size and habit.
Abstract Chains of coupled metallic nanoparticles are special interest for plasmonic applications because they can sustain highly dispersive plasmon bands, allowing strong ballistic wave transport. Whereas early studies focused on homogeneous particle chains exhibiting only one dominant band, heterogeneous assemblies consisting different nanoparticle species came into the spotlight recently. Their increased configuration space principally allows engineering multiple bandgaps, or topological...
Two-dimensional random metal networks possess unique electrical and optical properties, such as almost total transparency low sheet resistance, which are closely related to their disordered structure. Here we present a detailed experimental theoretical investigation of plasmonic revealing Anderson (disorder-driven) localized surface plasmon resonances very large quality factors spatial localization close the maximum, couple electromagnetic waves. Moreover, they disappear above...
Abstract The combination of plasmonic nanoparticles and optical microcavities has attracted broad interest for both fundamental applied studies. However, the conventional scheme being located at microcavity outer surfaces suffers from serious problems such as significant radiative/scattering losses chemical/mechanical instabilities. Here, silver (NPs) dispersed ions embedded in nanomembrane‐formed whispering‐gallery‐mode (WGM) microtube cavities are prepared by ion implantations compact...
Abstract Hybrid metallic nanoparticles (NPs) encapsulated in oxide shells are currently intensely studied for plasmonic applications sensing, medicine, catalysis, and photovoltaics. Here, a method the synthesis of Au@Ag@SiO 2 cubes with uniform silica shell variable adjustable thickness nanometer range is introduced their excellent, highly reproducible, tunable optical response demonstrated. Varying thickness, excitation energies single NP plasmon modes can be tuned broad spectral between...
The so-called Transport of Intensity Equation (TIE) phase retrieval technique is widely applied in light, x-ray and electron optics to reconstruct, e.g., refractive indices, electric magnetic fields solids. Here, we present a largely improved TIE reconstruction algorithm, which properly considers intensity variations as well unknown boundary conditions finite difference implementation the partial differential equation. That removes artifacts encountered state-of-the-art Poisson solvers TIE,...
We use momentum-dependent electron energy-loss spectroscopy in transmission to study collective charge excitations the "strange" layer metal Sr$_2$RuO$_4$. cover a complete range between in-plane and out-of-plane oscillations. Outside of classical electron-hole excitations, leading Landau damping, we observe well defined plasmons. The optical (acoustic) plasmon due an in-phase (out-of-phase) oscillation neighbouring layers exhibits quadratic (linear) dispersion. Using model for Coulomb...
Assemblies of plasmonic nanoparticles (NPs) support hybridized modes localized surface plasmons (LSPs), which delocalize in geometrically well-ordered arrangements. Here, the hybridization behavior LSPs completely disordered arrangements Au NPs fabricated by an e-beam synthesis method is studied. Employing electron energy loss spectroscopy a scanning transmission microscope combination with numerical simulations, disorder-driven spatial and spectral localization coupled LSP that depend on NP...
Sodium is known as a soft metal that can easily change its particle morphology. It form outstretched and rolled fibers with plastic or brittle behavior, cubes. In Na-batteries, metallic Na anodes demonstrate high reactivity towards the majority of electrolyte solutions, volume random deposition process from electrolyte, accompanied by dendrite formation. order to smooth electrochemical deposition, we propose NaOH simple artificial protective layer for sodium, formed exposure ambient...
Electronic topological states of matter exhibit novel types responses to electromagnetic fields.The response strong insulators, for instance, is characterized by a so-called axion term in the Lagrangian which ultimately due presence surface states.Here we develop Mie theory spherical particles including arbitrary sources fields, i.e., charge and current distributions.We derive an induced mixing transverse magnetic electric modes are experimentally detectable through small rotations field...
Journal Article Inelastic Momentum Transfer Measurements on Plasmonic Structures in the (S)TEM Get access J Schultz, Schultz Institute for Solid State Research, IFW Dresden, Germany Corresponding author: j.schultz@ifw-dresden.de Search other works by this author on: Oxford Academic Google Scholar Krehl, Krehl G Guzzinati, Guzzinati EMAT, University of Antwerp, Belgium P Potapov, Potapov FS Nogueira, Nogueira Theoretical Physics, A Lubk Microscopy and Microanalysis, Volume 25, Issue S2, 1...
Two-dimensional random metal networks possess unique electrical and optical properties, such as almost total transparency low sheet resistance, which are closely related to their disordered structure. Here we present a detailed experimental theoretical investigation of plasmonic revealing Anderson (disorder-driven) localized surface plasmon (LSP) resonances very large quality factors spatial localization close the maximum, couple electromagnetic waves. Moreover, they disappear above...
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