A5048876648- Magnetic Properties and Synthesis of Ferrites
- Magneto-Optical Properties and Applications
- Multiferroics and related materials
- Semiconductor Quantum Structures and Devices
- Advanced Semiconductor Detectors and Materials
- Gold and Silver Nanoparticles Synthesis and Applications
- Quantum Dots Synthesis And Properties
- Advanced Electron Microscopy Techniques and Applications
- Enzyme Structure and Function
- Force Microscopy Techniques and Applications
- Nanoparticles: synthesis and applications
- Advanced X-ray Imaging Techniques
- Semiconductor Lasers and Optical Devices
- Surface and Thin Film Phenomena
- Quantum and electron transport phenomena
- Material Dynamics and Properties
- Photosynthetic Processes and Mechanisms
- Ferroelectric and Piezoelectric Materials
- Theoretical and Computational Physics
- Nanocomposite Films for Food Packaging
- Near-Field Optical Microscopy
- Advanced Frequency and Time Standards
- Perovskite Materials and Applications
- Supramolecular Self-Assembly in Materials
- Plasmonic and Surface Plasmon Research
European X-Ray Free-Electron Laser
2023-2025
Universität Hamburg
2019-2021
Deutsches Elektronen-Synchrotron DESY
2021
Center for Free-Electron Laser Science
2019-2021
National Research Centre
2017-2019
Italian Institute of Technology
2015-2017
Korea Institute of Science and Technology
2010-2016
Korea Photonics Technology Institute
2012
Korean Association Of Science and Technology Studies
2012
Korea University of Science and Technology
2010-2011
Abstract The world’s first superconducting megahertz repetition rate hard X-ray free-electron laser (XFEL), the European XFEL, began operation in 2017, featuring a unique pulse train structure with 886 ns between pulses. With its rapid rate, XFEL may alleviate some of increasing demand for beamtime, particularly membrane protein serial femtosecond crystallography (SFX), leveraging orders-of-magnitude faster data collection. Here, we report SFX experiment, where determined 2.9 Å-resolution...
Resonant oscillators with stable frequencies and large quality factors help us to keep track of time high precision. Examples range from quartz crystal in wristwatches atomic clocks, which are, at present, our most precise measurement devices1. The search for more convenient reference is continuing2-6. Nuclear are better than because their naturally higher resilience against external perturbations7-9. One the promising cases an ultra-narrow nuclear resonance transition 45Sc between ground...
Dark field x-ray microscopy (DXFM) can visualize microstructural distortions in bulk crystals. Using the femtosecond pulses generated by free-electron lasers (XFELs), DFXM achieve sub-μm spatial resolution and <100 fs time simultaneously. In this paper, we demonstrate ultrafast measurements at European XFEL to an optically driven longitudinal strain wave propagating through a diamond single crystal. We also present two scanning modalities that are new sources: 3D 2D axial-strain scans...
Cellulose acetate (CA) nanoparticles were combined with two antimicrobial agents, namely lemongrass (LG) essential oil and Cu-ferrite nanoparticles. The preparation method of CA nanocapsules (NCs), the was based on nanoprecipitation using solvent/anti-solvent technique. Several physical chemical analyses performed to characterize resulting NCs study their formation mechanism. size found be ca. 220 nm. presence Cu-ferrites enhanced attachment LG into matrix. magnetic properties construct...
Serial femtosecond crystallography (SFX) is a powerful technique that exploits X-ray free-electron lasers to determine the structure of macromolecules at room temperature. Despite impressive exposition structural details with this novel crystallographic approach, methods currently available introduce crystals into path beam sometimes exhibit serious drawbacks. Samples requiring liquid injection crystal slurries consume large quantities (at times up gram protein per data set), may not be...
A thin film of Gd3+ doped Mn–Cr ferrite the chemical formula MnCr0.5Gd0.02Fe1.48O4 was prepared by pulsed laser deposition from bulk sample at room temperature. The optical absorption, transmission and reflection spectra were measured discussed in wavelength range 300 to 2500 nm. parameters calculated following single oscillator model. band gap found be 2.75 eV, dispersive energy electric dipoles estimated using Wemple–Di Domenico relation 6.395 while oscillating dipole is 4.997 eV....
The mechanical properties of Mn-Cr ferrite different compositions are important for industrial applications in everyday life. Ferrites used electric choke coils, transformers, and many other electronic optical devices. elastic can be understood by studying the longitudinal sound velocity (Vl) shear (Vs). (Vs) measured at room temperature pulse transmission technique frequency 1659 Hz, which is ideally representing crystal. was found to around 4 × 103 m∕s while ranging according doping...
Colloidal gold nanoparticles are a widespread nanomaterial with many potential applications, but their aggregation in suspension is critical issue which usually prevented by organic surfactants. This solution has some drawbacks, such as material contamination and modifications of its functional properties. The presented this work have been synthesized ultra-fast laser ablation liquid, addresses the above issues overcoating metal an oxide layer. main focus characterization oxidized...
The localization of light known as Anderson is a common phenomenon characterizing aggregates metallic nanostructures. electromagnetic energy visible can be localized inside nanostructures below the diffraction limit by converting optical modes into nonradiative surface plasmon resonances. confined photons correlated to size and shape nanostructured system. In this work, we studied photoluminescence dependence 14 nm diameter gold nanoparticles (AuNPs) synthesized drop-casting liquid...
The Photoluminescence spectra (PL), their temperature and power dependence were investigated for the ground state in InAs quantum dots (QDs) embedded InGaAs asymmetric well (Asym. QW). In-atom segregation is known phenomena such structures, which result altering inter-atomic distances; as a consequence thermo-dynamical parameters change well, namely Debye temperature. bigger value of studied sample with respect to corresponding bulk attributed In/Ga inter-diffusion during growth. process...