Article
Chemistry, Physical
Rico Mayro P. Tanyag, Camila Bacellar, Weiwu Pang, Charles Bernando, Luis F. Gomez, Curtis F. Jones, Ken R. Ferguson, Justin Kwok, Denis Anielski, Ali Belkacem, Rebecca Boll, John Bozek, Sebastian Carron, Gang Chen, Tjark Delmas, Lars Englert, Sascha W. Epp, Benjamin Erk, Lutz Foucar, Robert Hartmann, Alexander Hexemer, Martin Huth, Stephen R. Leone, Jonathan H. Ma, Stefano Marchesini, Daniel M. Neumark, Billy K. Poon, James Prell, Daniel Rolles, Benedikt Rudek, Artem Rudenko, Martin Seifrid, Michele Swiggers, Joachim Ullrich, Fabian Weise, Petrus Zwart, Christoph Bostedt, Oliver Gessner, Andrey F. Vilesov
Summary: Advancements in x-ray free-electron lasers have enabled single-shot imaging of fragile nanostructures, such as superfluid helium droplets, providing unique access to their sizes and shapes. This study reports on the size distributions of both pure and doped droplets collected from single-shot x-ray imaging, showing exponential size distribution and smaller average sizes for the doped droplets.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Automation & Control Systems
Henning Bonart, Christian Kahle
Summary: This study investigates the optimal control of shaping and positioning droplets on a solid surface by considering a phase field model and contact line dynamics. It is found that effective control can be achieved by manipulating the contact angles between droplets and the solid surface. Additionally, the study discusses the regularity of solutions and the existence of optimal solutions to the control problem.
SIAM JOURNAL ON CONTROL AND OPTIMIZATION
(2021)
Article
Chemistry, Physical
Jie Zhang, Marisol Trejo, Stephen D. Bradford, Lei Lei, Wei Kong
Summary: The study presents electron diffraction of cationic argon nanoclusters embedded in superfluid helium droplets, demonstrating the formation of different sized ionic clusters with structures consistent with theoretical calculations. Challenges lie in detecting the neutral helium atoms surrounding the cationic nanoclusters.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Physics, Multidisciplinary
Camila Bacellar, Adam S. Chatterley, Florian Lackner, C. D. Pemmaraju, Rico Mayro P. Tanyag, Deepak Verma, Charles Bernando, Sean M. O. O'Connell, Maximilian Bucher, Ken R. Ferguson, Tais Gorkhover, Ryan N. Coffee, Giacomo Coslovich, Dipanwita Ray, Timur Osipov, Daniel M. Neumark, Christoph Bostedt, Andrey F. Vilesov, Oliver Gessner
Summary: Strong-field ionization of nanoscale clusters provides a unique way to study the complex dynamics of high-density plasmas. By using femtosecond time-resolved x-ray coherent diffractive imaging, the plasma dynamics induced by near-infrared laser in helium droplets with 600 nm diameter were investigated. The observations reveal the establishment of an anisotropic surface region within 100 fs and the subsequent contraction of the dense plasma core at different rates along and perpendicular to the laser polarization.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Physical
Wolfgang E. Ernst, Andreas W. Hauser
Summary: Metal clusters are of continuous interest for their potential in creating matter with unique properties useful for applications in photonics, catalysis, and electronics. By controlling the combination of specific elements in a nanoparticle, new materials can be developed. Research focuses on synthesis of tailored metal and metal oxide clusters, including core-shell designs, with a particular emphasis on thermal properties and alloy formation at the nanoscale. Both experimental and theoretical approaches are used for characterization and analysis.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Optics
Hui Jiang, Feng He
Summary: This study investigates the mechanisms of nonsequential triple ionization of Ar in strong laser fields, revealing the possibility of connecting three electrons step by step through tunneling effects to form a cascade rescattering channel.
Article
Physics, Multidisciplinary
A. Hartung, S. Brennecke, K. Lin, D. Trabert, K. Fehre, J. Rist, M. S. Schoeffler, T. Jahnke, L. Ph H. Schmidt, M. Kunitski, M. Lein, R. Doerner, S. Eckart
Summary: Strong-field ionization of atoms by circularly polarized femtosecond laser pulses results in a donut-shaped electron momentum distribution, which can be shifted forward by the magnetic non-dipole effect. In addition, there is an electric non-dipole effect causing changes in the radius of the distribution for different momentum directions.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Shang-Fu Yuan, Cong-Qiao Xu, Wen-Di Liu, Jing-Xuan Zhang, Jun Li, Quan-Ming Wang
Summary: This study presents the construction of a linear silver supercluster based on Ag-13 units and reveals its stability and electron coupling mechanism. The quantum size effect explains the enhancement of metal-related absorption intensity and the red shift phenomenon.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Physics, Multidisciplinary
R. N. Bisset, L. A. Pena Ardila, L. Santos
Summary: The recent achievement of two-component dipolar Bose-Einstein condensates has opened up exciting possibilities for studying mixtures of ultradilute quantum liquids, resulting in various ground-state phases. The formation of self-bound immiscible droplets is possible due to mutual nonlocal intercomponent attraction. Additionally, quantum fluctuations in the majority component critically modify the miscibility of impurities.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Fluids & Plasmas
Steven Blaber, David A. Sivak
Summary: Quadratic trapping potentials are widely used in experiments to study biopolymers and molecular machines. A multidimensional trapping protocol has been designed to minimize dissipation, which can be easily applied to various systems. This approximation is valid for any duration, as long as the trapping potential is sufficiently strong.
Article
Mechanics
Daorui Wang, Junfeng Wang, Dongbao Wang, Lei Zuo, Jian Gao, Haojie Xu
Summary: The conical breakup behavior of droplets in immiscible dielectric liquids under non-uniform alternating current (AC) electric fields is experimentally investigated using high-speed photography. Two distinct conical breakup configurations, called the trident vibration and lotus vibration modes, are proposed, and their detailed structural parameters are discussed. The extremely small stable conical meniscus is found in the liquid-liquid system. The multilevel asymptotic characteristics of conical fragmentation are observed due to the variances in spatial and temporal scales.
Article
Chemistry, Multidisciplinary
Kathryn J. Vannoy, Jeffrey E. Dick
Summary: Chemical reactivity in microdroplets differs from that in bulk water, with a higher apparent bimolecular rate constant observed in microdroplets. The cause of this rate acceleration is not solely attributed to the adsorption of reactants at the liquid|liquid interface, indicating the involvement of kinetics of the bimolecular reaction throughout the microdroplet volume or at the boundary. These findings have significant implications for understanding biological processes within cells.
Article
Chemistry, Multidisciplinary
Kentaro Yonesato, Seiji Yamazoe, Soichi Kikkawa, Daisuke Yokogawa, Kazuya Yamaguchi, Kosuke Suzuki
Summary: The properties of metal nanoclusters depend on their structures and electronic states. However, controlling the electronic states is still challenging. Recently, we achieved reversible control of the electronic states of atomically precise Ag nanoclusters by utilizing the acid/base nature of polyoxometalates as inorganic ligands.
Article
Optics
Attila Toth, Andras Csehi
Summary: This study designs an optimal laser pulse for controlling strong-field multiphoton atomic transitions through reverse engineering, eliminating nonessential states and applying the rotating-wave approximation. By engineering the amplitude and phase of the laser pulse, resonant coupling of dynamically shifted electronic states is achieved, allowing the system to evolve along user-defined quantum pathways.
Article
Chemistry, Physical
Bennet S. Krebs, Vasily Tulsky, Lev Kazak, Michael Zabel, Dieter Bauer, Josef Tiggesbaumker
Summary: Magnesium atoms embedded in helium nanodroplets were studied using two-color laser pulses, and it was found that the droplet environment has a significant impact on single electron propagation. The angle-resolved photoelectron spectra showed differences compared to free atoms, with scattering in the neutral helium environment causing an almost isotropic angular distribution. Moreover, the appearance of higher-energy electrons indicated the influence of the droplet on the emission process. Phase-of-the-phase spectroscopy revealed a loss in the phase dependence of the electron signal. A Monte Carlo simulation including laser-assisted electron scattering successfully reproduced the experimental spectra and provided insights into electron emission from disordered systems under strong fields.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Optics
M. Kuebel, M. Arbeiter, C. Burger, Nora G. Kling, T. Pischke, R. Moshammer, T. Fennel, M. F. Kling, B. Bergues
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
(2018)
Article
Instruments & Instrumentation
U. Zastrau, C. Roedel, M. Nakatsutsumi, T. Feigl, K. Appel, B. Chen, T. Doeppner, T. Fennel, T. Fiedler, L. B. Fletcher, E. Foerster, E. Gamboa, D. O. Gericke, S. Goede, C. Grote-Fortmann, V. Hilbert, L. Kazak, T. Laarmann, H. J. Lee, P. Mabey, F. Martinez, K. -H. Meiwes-Broer, H. Pauer, M. Perske, A. Przystawik, S. Roling, S. Skruszewicz, M. Shihab, J. Tiggesbaeumker, S. Toleikis, M. Wuensche, H. Zacharias, S. H. Glenzer, G. Gregori
REVIEW OF SCIENTIFIC INSTRUMENTS
(2018)
Article
Optics
Q. Liu, L. Seiffert, A. Trabattoni, C. Castrovilli, M. Galli, P. Rupp, F. Frassetto, L. Poletto, M. Nisoli, E. Ruehl, F. Krausz, T. Fennel, S. Zherebtsov, F. Calegari, M. F. Kling
Correction
Multidisciplinary Sciences
Johannes Passig, Sergey Zherebtsov, Robert Irsig, Mathias Arbeiter, Christian Peltz, Sebastian Goede, Slawomir Skruszewicz, Karl-Heinz Meiwes-Broer, Josef Tiggesbaeumker, Matthias F. Kling, Thomas Fennel
NATURE COMMUNICATIONS
(2018)
Article
Materials Science, Multidisciplinary
Charles Varin, Graeme Bart, Thomas Fennel, Thomas Brabec
OPTICAL MATERIALS EXPRESS
(2019)
Article
Physics, Multidisciplinary
Qingcao Liu, Sergey Zherebtsov, Lennart Seiffert, Slawomir Skruszewicz, Dominik Zietlow, Seongjin Ahn, Philipp Rupp, Pawel Wnuk, Shaohua Sun, Alexander Kessel, Sergei Trushin, Annika Schlander, Dongeon Kim, Eckart Ruehl, Marcelo F. Ciappina, Josef Tiggesbaeumker, Markus Gallei, Thomas Fennel, Matthias F. Kling
NEW JOURNAL OF PHYSICS
(2019)
Article
Multidisciplinary Sciences
Philipp Rupp, Christian Burger, Nora G. Kling, Matthias Kuebel, Sambit Mitra, Philipp Rosenberger, Thomas Weatherby, Nariyuki Saito, Jiro Itatani, Ali S. Alnaser, Markus B. Raschke, Eckart Ruehl, Annika Schlander, Markus Gallei, Lennart Seiffert, Thomas Fennel, Boris Bergues, Matthias F. Kling
NATURE COMMUNICATIONS
(2019)
Article
Physics, Multidisciplinary
P. Juergens, B. Liewehr, B. Kruse, C. Peltz, D. Engel, A. Husakou, T. Witting, M. Ivanov, M. J. J. Vrakking, T. Fennel, A. Mermillod-Blondin
Article
Nanoscience & Nanotechnology
Qingcao Liu, Lennart Seiffert, Frederik Suessmann, Sergey Zherebtsov, Johannes Passig, Alexander Kessel, Sergei A. Trushin, Nora G. Kling, Itzik Ben-Itzhak, Valerie Mondes, Christina Graf, Eckart Ruehl, Laszlo Veisz, Stefan Karsch, Jessica Rodriguez-Fernandez, Mark Stockman, Josef Tiggesbaeumker, Karl-Heinz Meiwes-Broer, Thomas Fennel, Matthias F. Kling
Article
Nanoscience & Nanotechnology
Johannes Schoetz, Lennart Seiffert, Ancyline Maliakkal, Johannes Bloechl, Dmitry Zimin, Philipp Rosenberger, Boris Bergues, Peter Hommelhoff, Ferenc Krausz, Thomas Fennel, Matthias F. Kling
Summary: Research on photoemission and photocurrents from nano-sized tungsten needle tips exposed to controlled laser fields revealed a rapid increase in emitted electron energies beyond a certain intensity threshold, indicating the onset of charge interaction dominated photoemission dynamics. This finding may also be relevant for photoemission from other nanostructures and PHz-scale devices.
Article
Computer Science, Artificial Intelligence
T. Stielow, R. Schmidt, C. Peltz, T. Fennel, S. Scheel
MACHINE LEARNING-SCIENCE AND TECHNOLOGY
(2020)
Article
Optics
Bjoern Kruse, Benjamin Liewehr, Christian Peltz, Thomas Fennel
JOURNAL OF PHYSICS-PHOTONICS
(2020)
Article
Optics
Andrea Trabattoni, Lorenzo Colaizzi, Loren Ban, Vincent Wanie, Krishna Saraswathula, Erik P. Mansson, Philipp Rupp, Qingcao Liu, Lennart Seiffert, Elisabeth A. Herzig, Andrea Cartella, Bruce L. Yoder, Francois Legare, Matthias F. Kling, Thomas Fennel, Ruth Signorell, Francesca Calegari
JOURNAL OF PHYSICS-PHOTONICS
(2020)
Article
Optics
Xiaomeng Liu, Lennart Seiffert, Thomas Fennel, Oliver Kuehn
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
(2019)
Proceedings Paper
Engineering, Electrical & Electronic
Alexandre Mermillod-Blondin, Peter Juergens, Benjamin Liewehr, Bjoern Kruse, Christian Peltz, Tobias Witting, Anton Husakou, Mikhail Ivanov, Thomas Fennel, Marc J. J. Vrakking
LASER APPLICATIONS IN MICROELECTRONIC AND OPTOELECTRONIC MANUFACTURING (LAMOM) XXIV
(2019)
