Magneto-Optická a THz Spektroskopie
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A Versatile Setup for Fourier-Transform Infrared Magneto-Spectroscopy
(IEEE, 2023-06-09)Fourier-transform infrared (FTIR) magneto-spectroscopy is a powerful spectroscopic technique used to investigate many important effects in materials, e.g., electron spin resonance (ESR), cyclotron resonance, and transitions ... -
Ultrafast valley-selective coherent optical manipulation with excitons in WSe2 and MoS2 monolayers
(Springer Nature, 2023-03-25)Increasing the speed limits of conventional electronics requires innovative approaches to manipulate other quantum properties of electrons besides their charge. An alternative approach utilizes the valley degree of freedom ... -
Transparent LiOH-doped magnesium aluminate spinel produced by spark plasma sintering: Effects of heating rate and dopant concentration
(Elsevier, 2023-07-01)The effects of LiOH doping of magnesium aluminate spinel powders and various Spark Plasma Sintering (SPS) schedules on densification behavior and final transparency of polycrystalline magnesium aluminate spinel were studied. ... -
Ultrafast Dynamics of Valley-Polarized Excitons in WSe2 Monolayer Studied by Few-Cycle Laser Pulses
(MDPI, 2023-03-28)We report on the experimental investigation of the ultrafast dynamics of valley-polarized excitons in monolayer WSe (Formula presented.) using transient reflection spectroscopy with few-cycle laser pulses with 7 fs duration. ... -
Quantum phase transitions probed by EPR spectra in dimeric spin arrays with supramolecular couplings
(Elsevier, 2023-04-01)Dimeric compounds with nearly isolated molecular units (d-units) having pairs of spins s1 and s2 coupled by antiferromagnetic (AFM) exchange H-0 = -J(0)s(1) center dot s(2) are non-trivial quantum spin systems having ... -
Terahertz electron paramagnetic resonance generalized spectroscopic ellipsometry: The magnetic response of the nitrogen defect in 4H-SiC
(AIP Publishing, 2022-03-08)We report on terahertz (THz) electron paramagnetic resonance generalized spectroscopic ellipsometry (THz-EPR-GSE). Measurements of field and frequency dependencies of magnetic response due to spin transitions associated ... -
Chemical vapor deposition: a potential tool for wafer scale growth of two-dimensional layered materials
(IOP Publishing Ltd, 2022-11-24)The rapidly growing demand for high-performance and low-power electronic and photonic devices has driven attention towards novel two-dimensional (2D) layered materials. In this regard, 2D layered materials, including ... -
Nanostructured graphene for nanoscale electron paramagnetic resonance spectroscopy
(2020-01-28)The opening of a quantum confinement gap in nanostructured graphene yields extremely sensitive photodetectors, with electrical noise equivalent power lower than 1015 W Hz0.5 at temperatures below 3 K, for detection of ... -
Rapid scan ESR: A versatile tool for the spin relaxation studies at (sub)THz frequencies
(AIP Publishing, 2022-03-21)The development of pulse electron spin resonance (ESR) spectroscopy at microwave frequencies above 100 GHz is rather challenging and expensive due to the low output power of modern high-frequency solid state electronics. ... -
A graphene-based hybrid material with quantum bits prepared by the double Langmuir–Schaefer method
(2019-08-01)The scalability and stability of molecular qubits deposited on surfaces is a crucial step for incorporating them into upcoming electronic devices. Herein, we report on the preparation and characterisation of a molecular ... -
Phosphorene-an emerging two-dimensional material: recent advances in synthesis, functionalization, and applications
(IOP Publishing, 2022-07-01)Two-dimensional (2D) materials are the focal point of intensive research efforts due to their unique properties and ability to reveal fascinating new phenomena. As an analog to graphene, phosphorene is a monolayer of black ... -
Trigonally Distorted Hexacoordinate Co(II) Single-Ion Magnets
(MDPI, 2022-01-29)By simple reactions involving various cobalt(II) carboxylates (acetate and in situ prepared pivalate and 4-hydroxybenzoate salts) and neocuproine (neo), we were able to prepare three different carboxylate complexes with ... -
Ratiometric pH-Responsive F-19 Magnetic Resonance Imaging Contrast Agents Based on Hydrazone Switches
(American Chemical Society, 2022-03-14)Hydrazone-based molecular switches serve as eflicient ratiometric pH-sensitive agents that can be tracked with F-19 NMR/MRI and H-1 NMR. Structural changes induced between pH 3 and 4 lead to signal appearance and disappearance ... -
Sample Holders for Sub-THz Electron Spin Resonance Spectroscopy
(IEEE, 2022-04-29)Electron spin resonance (ESR) is a powerful spectroscopic technique used to investigate samples with unpaired electrons in a broad range of scientific fields. High-frequency ESR (HF-ESR) spectrometers operating at sub-THz ... -
Lanthanide-Based Metal-Organic-Frameworks for Proton Conduction and Magnetic Properties
(Wiley-VCH, 2021-12-07)The coexistence of proton conductivity and magnetic properties in metal organic frameworks (MOFs) is simply an attractive prospect to design and create multifunctional molecular materials. However, the simultaneity of ... -
Targeted PET/MRI Imaging Super Probes: A Critical Review of Opportunities and Challenges
(Dove Medical Press, 2022-01-14)Recently, the demand for hybrid PET/MRI imaging techniques has increased significantly, which has sparked the investigation into new ways to simultaneously track multiple molecular targets and improve the localization and ... -
Destructive Photon Echo Formation in Six-Wave Mixing Signals of a MoSe2 Monolayer
(Wiley-VCH, 2022-01-05)Monolayers of transition metal dichalcogenides display a strong excitonic optical response. Additionally encapsulating the monolayer with hexagonal boron nitride allows to reach the limit of a purely homogeneously broadened ... -
The riddle of orange-red luminescence in Bismuth-doped silica glasses
(Nature Portfolio, 2021-04-08)For over the past two decades it has been believed that the intense orange-red photoluminescence in Bismuth-doped materials originates from Bi2+ ions. Based on the results from magnetic circular polarization experiments, ... -
Simulation of nitrogen nuclear spin magnetization of liquid solved nitroxides
(Royal Society of Chemistry, 2021-08-28)Nitroxide radicals are widely used in electron paramagnetic resonance (EPR) applications. Nitroxides are stable organic radicals containing the N-O group with hyperfine coupled unpaired electron and nitrogen nuclear spins. ... -
Defects in Hybrid Perovskites: The Secret of Efficient Charge Transport
(WILEY-VCH, 2021-09-01)The interaction of free carriers with defects and some critical defect properties are still unclear in methylammonium lead halide perovskites (MHPs). Here, a multi-method approach is used to quantify and characterize defects ...
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