Patryk Kusch
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View article: Enhancement of the WS$_2$ A$_{1\text{g}}$ Raman Mode in MoS$_2$/WS$_2$ Heterostructures
Enhancement of the WS$_2$ A$_{1\text{g}}$ Raman Mode in MoS$_2$/WS$_2$ Heterostructures Open
When combined into van der Waals heterostructures, transition metal dichalcogenide monolayers enable the exploration of novel physics beyond their unique individual properties. However, for interesting phenomena such as interlayer charge t…
View article: Correlation of near‐field optical microscopy and tip‐assisted photoluminescence
Correlation of near‐field optical microscopy and tip‐assisted photoluminescence Open
Nanoscale optical imaging has unlocked unprecedented opportunities for exploring the structural, electronic, and optical properties of low‐dimensional materials with spatial resolutions far beyond the diffraction limit. Techniques such as …
View article: Characterizing Interlayer Excitons by Spectral Signature in Scattering Visible Near-Field Microscopy
Characterizing Interlayer Excitons by Spectral Signature in Scattering Visible Near-Field Microscopy Open
Interlayer excitons (IXs) in van der Waals heterostructures exhibit unique optical properties due to their spatially separated charge carriers. However, the weak oscillator strength and radiative broadening of IXs make them difficult to de…
View article: Collective States of α-Sexithiophene Chains Inside Boron Nitride Nanotubes
Collective States of α-Sexithiophene Chains Inside Boron Nitride Nanotubes Open
The optical excitation of close-by molecules can couple into collective states giving rise to phenomena such as ultrafast radiative decay and superradiance. Particularly intriguing are one-dimensional molecular chains that form inside nano…
View article: Resonance Raman Scattering and Anomalous Anti-Stokes Phenomena in CrSBr
Resonance Raman Scattering and Anomalous Anti-Stokes Phenomena in CrSBr Open
CrSBr, a van der Waals material, stands out as an air-stable magnetic semiconductor with appealing intrinsic properties such as crystalline anisotropy, quasi-1D electronic characteristics, layer-dependent antiferromagnetism, and non-linear…
View article: Resonance Raman scattering and anomalous anti-Stokes phenomena in CrSBr
Resonance Raman scattering and anomalous anti-Stokes phenomena in CrSBr Open
We observe strong anti-Stokes and stimulated Raman scattering in CrSBr, with an exceptionally high anti-Stokes to Stokes intensity ratio and a Raman gain. Resonant Raman excitation profiles elucidate the nature of optical transitions.
View article: Correlative characterization of molecular two-dimensional van der Waals material heterostructures on the nanometer scale
Correlative characterization of molecular two-dimensional van der Waals material heterostructures on the nanometer scale Open
The fabrication and characterisation of the 2D molecular heterostructure consisting of graphene, rhodamine 6G and MoS 2 is presented. We demonstrate that the molecular layer modifies the polariton frequencies of MoS 2 .
View article: Correction to “Interlayer Exciton–Phonon Coupling in MoSe<sub>2</sub>/WSe<sub>2</sub> Heterostructures”
Correction to “Interlayer Exciton–Phonon Coupling in MoSe<sub>2</sub>/WSe<sub>2</sub> Heterostructures” Open
View article: Interlayer Exciton–Phonon Coupling in MoSe<sub>2</sub>/WSe<sub>2</sub> Heterostructures
Interlayer Exciton–Phonon Coupling in MoSe<sub>2</sub>/WSe<sub>2</sub> Heterostructures Open
Transition metal dichalcogenide heterostructures have garnered strong interest for their robust excitonic properties, mixed light-matter states such as exciton-polaritons, and tailored properties, vital for advanced device engineering. Two…
View article: Double Tips for In-Plane Polarized Near-Field Microscopy and Spectroscopy
Double Tips for In-Plane Polarized Near-Field Microscopy and Spectroscopy Open
Near-field optical microscopy and spectroscopy provide high-resolution imaging below the diffraction limit, crucial in physics, chemistry, and biology for studying molecules, nanoparticles, and viruses. These techniques use a sharp metalli…
View article: Collective states of α-sexithiophene chains inside boron nitride nanotubes
Collective states of α-sexithiophene chains inside boron nitride nanotubes Open
Nanotubes align molecules into one dimensional chains creating collective states through the coupling of the molecular transition dipole moments. These collective excitations have strong fluorescence, narrow bandwidth, and shifted emission…
View article: Double tips for in-plane polarized near-field microscopy and spectroscopy
Double tips for in-plane polarized near-field microscopy and spectroscopy Open
Near-field optical microscopy and spectroscopy provide high-resolution imaging below the diffraction limit, crucial in physics, chemistry, and biology for studying molecules, nanoparticles, and viruses. These techniques use a sharp metalli…
View article: Evidence for <i>Trans‐</i>Oligoene Chain Formation in Graphene Induced by Iodine
Evidence for <i>Trans‐</i>Oligoene Chain Formation in Graphene Induced by Iodine Open
Functionalization of pristine graphene by hydrogen and fluorine is well studied, resulting in graphane and fluorographene structures. In contrast, functionalization of pristine graphene with iodine has not been reported. Here, the function…
View article: Photoluminescence Modulation of Graphene/MoS<sub>2</sub> Heterostructures Separated by Laser-Induced Functionalization
Photoluminescence Modulation of Graphene/MoS<sub>2</sub> Heterostructures Separated by Laser-Induced Functionalization Open
Tuning the optoelectronic properties of monolayer MoS2 (1L-MoS2) is highly desired for optoelectronic applications. Gaining profound insights into the fundamental mechanisms that govern optoelectronic properties is of utmost significance. …
View article: Exploiting plasmonic enhancement with light‐emitting diode excitation in surface‐enhanced Raman scattering
Exploiting plasmonic enhancement with light‐emitting diode excitation in surface‐enhanced Raman scattering Open
Surface‐enhanced Raman scattering (SERS) is a well‐established technique that enables the detection of very low molecular concentrations down to single molecules. Typical applications of SERS are the consistent identification of various sa…
View article: Carbon Nanotubes for the Optical Far-Field Readout of Processes That Are Mediated by Plasmonic Near-Fields
Carbon Nanotubes for the Optical Far-Field Readout of Processes That Are Mediated by Plasmonic Near-Fields Open
As science progresses at the nanoscopic level, it becomes more and more important to comprehend the interactions taking place at the nanoscale, where optical near-fields play a key role. Their phenomenology differs significantly from the p…
View article: Strong light-matter coupling in MoS2
Strong light-matter coupling in MoS2 Open
Polariton-based devices require materials where light-matter coupling under ambient conditions exceeds losses, but our current selection of such materials is limited. Here we measured the dispersion of polaritons formed by the A and B exci…
View article: Probing the local dielectric function of WS2 on an Au substrate by near field optical microscopy operating in the visible spectral range
Probing the local dielectric function of WS2 on an Au substrate by near field optical microscopy operating in the visible spectral range Open
View article: Synthesis of Wet‐Chemically Prepared Porous‐Graphene Single Layers on Si/SiO<sub>2</sub> Substrate Increasing the Photoluminescence of MoS<sub>2</sub> in Heterostructures (Adv. Mater. Interfaces 17/2021)
Synthesis of Wet‐Chemically Prepared Porous‐Graphene Single Layers on Si/SiO<sub>2</sub> Substrate Increasing the Photoluminescence of MoS<sub>2</sub> in Heterostructures (Adv. Mater. Interfaces 17/2021) Open
Porous-Graphene Single Layers on SI/SIO2 Porous graphene is synthesized from oxo-functionalized graphene (oxoG), as reported in article number 2100783 by Siegfried Eigler and co-workers. The 3D atomic force microscopy image of oxoG with po…
View article: Probing the Local Dielectric Function by Near Field Optical Microscopy Operating in the Visible Spectral Range
Probing the Local Dielectric Function by Near Field Optical Microscopy Operating in the Visible Spectral Range Open
The optoelectronic properties of nanoscale systems such as carbon nanotubes (CNTs), graphene nanoribbons and transition metal dichalcogenides (TMDCs) are determined by their dielectric function. This complex, frequency dependent function i…
View article: Synthesis of Wet‐Chemically Prepared Porous‐Graphene Single Layers on Si/SiO<sub>2</sub> Substrate Increasing the Photoluminescence of MoS<sub>2</sub> in Heterostructures
Synthesis of Wet‐Chemically Prepared Porous‐Graphene Single Layers on Si/SiO<sub>2</sub> Substrate Increasing the Photoluminescence of MoS<sub>2</sub> in Heterostructures Open
Wet‐chemical generation of pores in graphene is a challenging synthetic task. Although graphene oxide is available in large quantities and chemically diverse, extended lattice defects already present from synthesis hamper the controlled gr…
View article: Surface-Enhanced Raman Scattering and Surface-Enhanced Infrared Absorption by Plasmon Polaritons in Three-Dimensional Nanoparticle Supercrystals
Surface-Enhanced Raman Scattering and Surface-Enhanced Infrared Absorption by Plasmon Polaritons in Three-Dimensional Nanoparticle Supercrystals Open
Surface-enhanced vibrational spectroscopy strongly increases the cross section of Raman scattering and infrared absorption, overcoming the limited sensitivity and resolution of these two powerful analytic tools. While surface-enhanced setu…
View article: Experimental tests of surface‐enhanced Raman scattering: Moving beyond the electromagnetic enhancement theory
Experimental tests of surface‐enhanced Raman scattering: Moving beyond the electromagnetic enhancement theory Open
The electromagnetic enhancement theory describes surface‐enhanced Raman scattering (SERS) as a Raman effect that takes place in the near‐field of a plasmonic nanostructure. The theory has been very successful in explaining the fundamental …
View article: Resonant Raman Scattering of 4‐Nitrothiophenol
Resonant Raman Scattering of 4‐Nitrothiophenol Open
Thiophenol‐based molecules are commonly used reporter molecules for various experiments, especially within the scope of surface‐ and tip‐enhanced Raman spectroscopy. Due to their molecular structure, they bind covalently to noble metals an…
View article: Data repository "Experimental tests of SERS: Moving beyond the electromagnetic enhancement theory"
Data repository "Experimental tests of SERS: Moving beyond the electromagnetic enhancement theory" Open
This data repository contains digitized data from earlier publications that were reanalysed in the reference. The readme file describes the data format and how the data were obtained.
View article: Impact of substrate on tip-enhanced Raman spectroscopy: A comparison between field-distribution simulations and graphene measurements
Impact of substrate on tip-enhanced Raman spectroscopy: A comparison between field-distribution simulations and graphene measurements Open
Tip-enhanced Raman spectroscopy (TERS) has reached nanometer spatial resolution for measurements performed at ambient conditions and subnanometer resolution at ultrahigh vacuum. Super-resolution (beyond the tip apex diameter) TERS has been…
View article: Resonant, Plasmonic Raman Enhancement of α-6T Molecules Encapsulated in Carbon Nanotubes
Resonant, Plasmonic Raman Enhancement of α-6T Molecules Encapsulated in Carbon Nanotubes Open
Surface-enhanced Raman scattering (SERS) and resonant Raman scattering are widely used techniques to enhance the Raman intensity of molecules and nanomaterials by several orders of magnitude. In SERS, typically, molecules are investigated …
View article: Asymmetry of resonance Raman profiles in semiconducting single-walled carbon nanotubes at the first excitonic transition
Asymmetry of resonance Raman profiles in semiconducting single-walled carbon nanotubes at the first excitonic transition Open
Carbon nanotubes are one-dimensional nanoscale systems with strongly pronounced chirality-dependent optical properties with multiple excitonic transitions. We investigate the high-energy G mode of semiconducting single-walled nanotubes of …
View article: Excitation-Tunable Tip-Enhanced Raman Spectroscopy
Excitation-Tunable Tip-Enhanced Raman Spectroscopy Open
Tip-enhanced Raman spectroscopy (TERS) is a powerful tool to investigate chemical composition, for obtaining molecular information and for recording images with a spatial resolution on the nanometer scale. However, it typically has been li…
View article: Dark Interlayer Plasmons in Colloidal Gold Nanoparticle Bi- and Few-Layers
Dark Interlayer Plasmons in Colloidal Gold Nanoparticle Bi- and Few-Layers Open
We demonstrate the excitation of dark plasmon modes with linearly polarized light at normal incidence in self-assembled layers of gold nanoparticles. Because of field retardation, the incident light field induces plasmonic dipoles that are…