Zobrazeno 1 - 10
of 779
pro vyhledávání: '"Chergui Majed"'
Autor:
Chen, Hui-Yuan, Versteeg, Rolf B., Puppin, Michele, Leroy, Ludmila, Mankowsky, Roman, Bohler, Pirmin, Deng, Yunpei, Kerkhoff, Linda, Mozzanica, Aldo, Oggenfuss, Roland Alexander, Pradervand, Claude, Sander, Mathias, Smolentsev, Grigory, Vetter, Seraphin, Zamofing, Thierry, Lemke, Henrik T., Chergui, Majed, Mancini, Giulia F.
Publikováno v:
Struct. Dyn. 11, 024308 (2024)
We present a new set up for resonant inelastic hard X-ray scattering at the Bernina beamline of SwissFEL with energy, momentum, and temporal resolution. The compact R=0.5 m Johann-type spectrometer can be equipped with up to 3 crystal analysers and a
Externí odkaz:
http://arxiv.org/abs/2312.10133
Autor:
Wang, Lijie, Nughays, Razan, Yin, Jun, Shih, Chun-Hua, Guo, Tsung-Fang, Mohammed, Omar F., Chergui, Majed
Using ultrafast broad-band transient absorption (TA) spectroscopy of photo-excited MAPbBr3 thin films with probe continua in the visible and the mid-to-deep-UV ranges, we capture the ultrafast gap renormalization at the fundamental gap situated at th
Externí odkaz:
http://arxiv.org/abs/2312.06480
Autor:
Milne, Christopher J., Nagornova, Natalia, Pope, Thomas, Chen, Hui-Yuan, Rossi, Thomas, Szlachetko, Jakub, Gawelda, Wojciech, Britz, Alexander, van Drie, Tim B., Sala, Leonardo, Ebner, Simon, Katayama, Tetsuo, Southworth, Stephen H., Doumy, Gilles, March, Anne Marie, Lehmann, C. Stefan, Mucke, Melanie, Iablonskyi, Denys, Kumagai, Yoshiaki, Knopp, Gregor, Motomura, Koji, Togashi, Tadashi, Owada, Shigeki, Yabashi, Makina, Nielsen, Martin M., Pajek, Marek, Ueda, Kiyoshi, Abela, Rafael, Penfold, Thomas J., Chergui, Majed
The evolution of charge carriers in photoexcited room temperature ZnO nanoparticles in solution is investigated using ultrafast ultraviolet photoluminescence spectroscopy, ultrafast Zn K-edge absorption spectroscopy and ab-initio molecular dynamics (
Externí odkaz:
http://arxiv.org/abs/2310.04060
Publikováno v:
EPJ Web of Conferences, Vol 205, p 10006 (2019)
We report broadband transient absorption measurements of adenine strands in the deep-UV (250-370 nm). By varying the strand length we resolve the interplay between inter-base stacking and exciton formation and dynamics in DNA oligomers.
Externí odkaz:
https://doaj.org/article/e6f05ed858ef49e5aad6aa7407c32798
Electron Dynamics in Anatase TiO2 Nanoparticles by Ultrafast Broadband Deep-Ultraviolet Spectroscopy
Publikováno v:
EPJ Web of Conferences, Vol 205, p 05017 (2019)
The optical bandgap of anatase TiO2 nanoparticles is dominated by bulk absorption bands in the deep-ultraviolet due to strongly bound excitons. These spectral features can be utilized as a sensitive probe of carrier and lattice dynamics inside the Ti
Externí odkaz:
https://doaj.org/article/1ed06a4675364733a3f450d3ca22cafd
Autor:
Rossi Thomas Charles, Wang Lijie, Oppermann Malte, Chen Peter, Chiang Yu-Hsien, Tsai Ming-Chang, Shih Chun-Hua, Guo Tsung-Fang, Chergui Majed
Publikováno v:
EPJ Web of Conferences, Vol 205, p 05020 (2019)
Transient absorption in the Visible and in the deep-UV is performed on MAPbBr3 thin films with 3.1 eV pump excitation. The UV probe can access higher order transitions in the material exploring different high-symmetry points of the Brillouin zone. Un
Externí odkaz:
https://doaj.org/article/872b94e8cf6e40ac8c2fda9dda5fdf2a
Autor:
Rouxel, Jeremy R., Rosner, Benedikt, Karpov, Dmitry, Bacellar, Camila, Mancini, Giulia F., Zinna, Francesco, Kinschel, Dominik, Cannelli, Oliviero, Oppermann, Malte, Svetina, Cris, Diaz, Ana, Lacour, Jerome, David, Christian, Chergui, Majed
Chirality is a structural property of molecules lacking mirror symmetry that has strong implications in diverse fields, ranging from life to materials sciences. Established spectroscopic methods that are sensitive to chirality, such as circular dichr
Externí odkaz:
http://arxiv.org/abs/2204.06685
Autor:
Cannelli, Oliviero, Wiktor, Julia, Colonna, Nicola, Leroy, Ludmila, Puppin, Michele, Bacellar, Camila, Sadykov, Ilia, Krieg, Franziska, Smolentsev, Grigory, Kovalenko, Maksym V., Pasquarello, Alfredo, Chergui, Majed, Mancini, Giulia F.
The potential of lead-halide perovskites for realistic applications is currently hindered by their limited long-term stability under functional activation. While the role of lattice flexibility in the thermal response of perovskites has become increa
Externí odkaz:
http://arxiv.org/abs/2110.02179
Autor:
Rouxel, Jeremy R., Fainozzi, Danny, Mankowsky, Roman, Rosner, Benedikt, Seniutinas, Gediminas, Mincigrucci, Riccardo, Catalini, Sara, Foglia, Laura, Cucini, Riccardo, Doring, Florian, Kubec, Adam, Koch, Frieder, Bencivenga, Filippo, Haddad, Andre Al, Gessini, Alessandro, Maznev, Alexei A., Cirelli, Claudio, Gerber, Simon, Pedrini, Bill, Mancini, Giulia F., Razzoli, Elia, Burian, Max, Ueda, Hiroki, Pamfilidis, Georgios, Ferrari, Eugenio, Deng, Yunpei, Mozzanica, Aldo, Johnson, Philip J. M., Ozerov, Dmitry, Izzo, Maria G., Bottari, Cettina, Arrell, Christopher, Divall, Edwin J., Zerdane, Serhane, Sander, Mathias, Knopp, Gregor, Beaud, Paul, Lemke, Henrik T., Milne, Chris J., David, Christian, Torre, Renato, Chergui, Majed, Nelson, Keith A., Masciovecchio, Claudio, Staub, Urs, Patthey, Luc, Svetina, Cristian
Optical-domain Transient Grating (TG) spectroscopy is a versatile background-free four-wave-mixing technique used to probe vibrational, magnetic and electronic degrees of freedom in the time domain. The newly developed coherent X-ray Free Electron La
Externí odkaz:
http://arxiv.org/abs/2104.01030
Autor:
Cannelli, Oliviero, Colonna, Nicola, Puppin, Michele, Rossi, Thomas, Kinschel, Dominik, Leroy, Ludmila, Loeffler, Janina, March, Anne Marie, Doumy, Gilles, Haddad, Andre Al, Tu, Ming-Feng, Kumagai, Yoshiaki, Walko, Donald, Smolentsev, Grigory, Krieg, Franziska, Boehme, Simon C., Kovalenko, Maksym V., Chergui, Majed, Mancini, Giulia F.
The development of next generation perovskite-based optoelectronic devices relies critically on the understanding of the interaction between charge carriers and the polar lattice in out-of-equilibrium conditions. While it has become increasingly evid
Externí odkaz:
http://arxiv.org/abs/2103.02575