Zobrazeno 1 - 10
of 277
pro vyhledávání: '"Vartanyants, Ivan A."'
Autor:
Hinsley, Gerard N., Westermeister, Fabian, Wang, Bihan, Ngoi, Kuan Hoon, Singh, Shweta, Rysov, Rustam, Sprung, Michael, Kewish, Cameron M., van Riessen, Grant A., Vartanyants, Ivan A.
The advent of diffraction limited sources and developments in detector technology opens up new possibilities for the study of materials in situ and operando. Coherent X-ray diffraction techniques such as coherent X-ray diffractive imaging (CXDI) and
Externí odkaz:
http://arxiv.org/abs/2408.05041
Autor:
Hoang, Le Phuong, Spasojevic, Irena, Lee, Tien-Lin, Pesquera, David, Rossnagel, Kai, Zegenhagen, Jörg, Catalan, Gustau, Vartanyants, Ivan A., Scherz, Andreas, Mercurio, Giuseppe
Understanding the mechanisms underlying a stable polarization at the surface of ferroelectric thin films is of particular importance both from a fundamental point of view and to achieve control of the surface polarization itself. In this study, it is
Externí odkaz:
http://arxiv.org/abs/2309.01673
Autor:
Lapkin, Dmitry, Singh, Shweta, Kirner, Felizitas, Sturm, Sebastian, Assalauova, Dameli, Ignatenko, Alexandr, Wiek, Thomas, Gemming, Thomas, Lubk, Axel, Müller-Caspary, Knut, Khadiev, Azat, Novikov, Dmitri, Sturm, Elena V., Vartanyants, Ivan A.
The self-assembly of anisotropic nanocrystals (stabilized by organic capping molecules) with pre-selected composition, size, and shape allows for the creation of nanostructured materials with unique structures and features. For such a material, the s
Externí odkaz:
http://arxiv.org/abs/2306.14507
Autor:
De Angelis, Dario, Principi, Emiliano, Bencivenga, Filippo, Fausti, Daniele, Foglia, Laura, Klein, Yishay, Manfredda, Michele, Mincigrucci, Riccardo, Montanaro, Angela, Pedersoli, Emanuele, Cresi, Jacopo Stefano Pelli, Perosa, Giovanni, Prince, Kevin C., Razzoli, Elia, Shwartz, Sharon, Simoncig, Alberto, Spampinati, Simone, Svetina, Cristian, Szlachetko, Jakub, Tripathi, Alok, Vartanyants, Ivan A., Zangrando, Marco, Capotondi, Flavio
Time-resolved X-ray Emission/Absorption Spectroscopy (Tr-XES/XAS) is an informative experimental tool sensitive to electronic dynamics in materials, widely exploited in diverse research fields. Typically, Tr-XES/XAS requires X-ray pulses with both a
Externí odkaz:
http://arxiv.org/abs/2305.05258
Autor:
Gelisio, Luca, Kim, Young Yong, Lim, Seon Woo, Nam, Daewoong, Eom, Intae, Kim, Minseok, Kim, Sangsoo, Khubbutdinov, Ruslan, Xiang, Li, Lee, Hoyeol, Ree, Moonhor, Kim, Chae Un, Vartanyants, Ivan A.
Understanding melting in metals is a hot topic of present research. This may be accomplished by pumping the system with infrared (IR) laser radiation, and probing it with hard X-rays produced by an X-ray Free-Electron Laser (XFEL). In this work we st
Externí odkaz:
http://arxiv.org/abs/2302.12362
Autor:
Tripathi, Alok Kumar, Klein, Yishai, Strizhevsky, Edward, Capotondi, Flavio, De Angelis, Dario, Giannessi, Luca, Pancaldi, Matteo, Pedersoli, Emanuele, Prince, Kevin C., Sefi, Or, Kim, Young Yong, Vartanyants, Ivan A., Shwartz, Sharon
We demonstrate the measurement of ultrafast dynamics using ghost spectroscopy and a pump-probe approach with an optical pump and a short-wavelength radiation probe. The ghost spectroscopy approach is used to overcome the challenge of the strong inten
Externí odkaz:
http://arxiv.org/abs/2210.02739
The structure of Tick-borne Encephalitis virus determined at X-Ray Free-Electron Lasers. Simulations
Publikováno v:
Journal of Synchrotron Radiation, 30, 24-34 (2023)
The study of the structure of viruses by X-ray free-electron lasers (XFEL) attracts more attention in recent decades. Such experiments are based on the collection of two-dimensional diffraction patterns measured at the detector after diffraction of f
Externí odkaz:
http://arxiv.org/abs/2209.00339
Bragg coherent diffraction imaging (BCDI) is a unique and powerful method for tracking three-dimensional strain fields non-destructively. While BCDI has been successfully applied to many scientific research fields and receives high demands, the recon
Externí odkaz:
http://arxiv.org/abs/2208.12994
Autor:
Hildebrandt, Marco, Lazarev, Sergey, Pérez, Javier, Vartanyants, Ivan A., Meijer, Janne-Mieke, Karg, Matthias
Publikováno v:
Macromolecules 55 (2022) 2959-2969
To explore dense packings of soft colloids, scattering experiments are ideal to access the structure factor. However, for soft microgels determination of the structure factor is difficult because of the low contrast of the polymer network and potenti
Externí odkaz:
http://arxiv.org/abs/2206.01497
Autor:
Kim, Young Yong, Khubbutdinov, Ruslan, Carnis, Jerome, Kim, Sangsoo, Nam, Daewoong, Nam, Inhyuk, Kim, Gyujin, Shim, Chi Hyun, Yang, Haeryong, Cho, Myunghoon, Min, Chang-Ki, Kim, Changbum, Kang, Heung-Sik, Vartanyants, Ivan
Hanbury Brown and Twiss interferometry experiment based on second-order correlations was performed at PAL-XFEL facility. The statistical properties of the X-ray radiation were studied within this experiment. Measurements were performed at NCI beamlin
Externí odkaz:
http://arxiv.org/abs/2203.13625