Article
Physics, Multidisciplinary
Jungmin Kim, Dayeong Lee, Sunkyu Yu, Namkyoo Park
Summary: Photonic systems can utilize time as an alternative to space, eliminating the need for spatial patterning. Recent studies have shown the importance of temporal degree of freedom in photonics and its analogy with spatial axes. In this research, we investigate the design of photonic time disorder to achieve optical functionalities without spatial patterning.
Article
Energy & Fuels
Rui Li, Jincheng Zhang, Xiaowei Zhao, Daming Wang, Martyn Hann, Deborah Greaves
Summary: This study investigates the real-time prediction of three-dimensional waves using machine learning methods, which is important in ocean engineering. Experimental results demonstrate that upstream wave data can be used for control-oriented wave forecasting, and short-term phase-resolved prediction can be achieved using only local wave data.
Article
Mechanics
Tian Geng, Hua Liu, Frederic Dias
Summary: In this study, a parallelized three-dimensional boundary element method is employed to simulate the interaction between an incoming solitary wave and a submerged horizontal plate. The numerical results are in good agreement with the experimental results, showing that the model successfully captures the main features of the interaction between nonlinear waves and the plate.
Article
Meteorology & Atmospheric Sciences
Rosimar Rios-Berrios, Falko Judt, George Bryan, Brian Medeiros, Wei Wang
Summary: Accurate simulations of convectively coupled equatorial waves (CCEWs) are crucial for accurate forecasting of rainfall and weather patterns in the tropics. This study investigates the representation of various types of CCEWs in the Model for Prediction Across Scales-Atmosphere (MPAS-A) and finds that better representation of deep convection in the model improves the simulation of gravity wave-type equatorial waves. However, discrepancies are observed in the simulated rainfall and lower-tropospheric structure associated with easterly waves. The intensity and propagation speeds of these waves are primarily affected by resolved deep convection.
JOURNAL OF CLIMATE
(2023)
Article
Engineering, Ocean
Amin Eyhavand-Koohzadi, Peyman Badiei
Summary: The study aimed to provide experimental measurements describing the fetch-duration conversion of water waves under steady wind action. However, due to the difficulty of collecting duration-limited wave data, the reliability of proposed equations is questionable. The experimental results showed the co-existence of different fetch-duration transition domains for each individual wave height and wave period, and a conversion equation in good agreement with experimental data based on equivalent peak period was obtained.
APPLIED OCEAN RESEARCH
(2021)
Article
Multidisciplinary Sciences
J. Song, J. Won, W. Bang
Summary: Time-resolved analysis of Rayleigh scattering measurements was used to determine the average size of methane clusters and find the optimum timing for laser-cluster fusion experiments. The study also revealed the production of energetic deuterium ions after laser-cluster interaction, which was consistent with the predicted temperature from CD4 clusters.
Article
Chemistry, Applied
Miguel A. Banares, Marco Daturi
Summary: Heterogeneous catalysis plays a central role in our everyday life and is becoming increasingly important due to changes in our economic model and the progress of the energetic transition. The new generation of catalysts is based on rational design, which is the result of thorough investigations in relevant conditions. Operando spectroscopy is crucial for understanding the behavior of catalytic materials and unraveling reaction steps. This article reviews representative papers in the field, focusing on energy-related investigations and the important aspects of time and space resolution. The authors provide their perspective on different methods and techniques, the shared understanding of similarities in catalytic processes, and future prospects for industrial process monitoring.
Article
Mechanics
Everest G. Sewell, Kevin J. Ferguson, Vitaliy V. Krivets, Jeffrey W. Jacobs
Summary: Experiments were conducted on Richtmyer-Meshkov instability with a three-dimensional, multi-mode initial perturbation, investigating the effect of perturbation amplitude on measured quantities and observing the development of the mixing region. However, the results did not fully meet the more stringent requirements proposed by previous researchers.
JOURNAL OF FLUID MECHANICS
(2021)
Review
Chemistry, Multidisciplinary
Volker S. Urban, William T. Heller, John Katsaras, Wim Bras
Summary: This article discusses the development of time-resolved neutron scattering experiments on soft condensed matter and biomaterials, highlighting the need for further advancements in sample environments and technique combinations to fully utilize existing facilities and future high intensity neutron sources.
APPLIED SCIENCES-BASEL
(2021)
Article
Optics
Miao Yu, Yueming Zhou, Kun Liu, Kunlong Liu, Min Li, Peixiang Lu
Summary: We studied the tunneling ionization time in the elliptically polarized laser field using phase-of-the-phase spectroscopy. By introducing a second-harmonic field to the attoclock frame, we were able to determine the ionization time of photoelectrons and found that it depends on the radial momentum of the photoelectron.
Article
Instruments & Instrumentation
Xue Han, Jason Qu, Shoya Sakamoto, Dongyu Liu, Dandan Guan, Jin Liu, Hui Li, Costel R. Rotundu, Nord Andresen, Chris Jozwiak, Zahid Hussain, Zhi-Xun Shen, Jonathan A. Sobota
Summary: This paper introduces a spin-ARPES setup based on time-of-flight spectroscopy and an electrostatic deflector mode for mapping spin-resolved band structures without sample rotation. The functionality of the setup is demonstrated by presenting spin-resolved spectra of the topological insulator Bi2Te3 and describing the spectrum calibrations based on numerical simulations. Implementing the deflector mode minimizes the need for sample rotation and improves the overall efficiency of experiments on small or inhomogeneous samples.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Chemistry, Physical
Pengfei Zhang, Marco Gandolfi, Francesco Banfi, Christ Glorieux, Liwang Liu
Summary: This work presents simultaneous spectroscopy of specific heat and thermal expansivity of glycerol using a wideband time-resolved thermal lens technique. An analytical model accurately describes TL transients in a relaxing system subjected to impulsive laser heating. The results extend specific heat and thermal expansion spectroscopy by nearly three and eight decades, respectively, allowing for assessment of relaxation strength and frequency up to sub-100 MHz.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Luca D'Amario, Maria Bruna Stella, Tomas Edvinsson, Maurizio Persico, Johannes Messinger, Holger Dau
Summary: This study describes a transient spectro-electrochemical Raman setup that achieves sub-ms time resolution, allowing for the study of electrochemical processes. The technique was validated through experiments and confirmed to be effective in assigning spectral properties to transient species. This research provides a foundational contribution to the development of next generation electrolizers, fuel cells, and batteries.
Article
Optics
Maximilian Spellauge, Carlos Donate-Buendia, Stephan Barcikowski, Bilal Goekce, Heinz P. Huber
Summary: Laser ablation in liquids is an interdisciplinary method that can generate surfactant-free and stable nanoparticles from almost any material. Ablation dynamics occurring on a sub-nanosecond timescale are essential for nanoparticle generation. This study visualizes the complete spatiotemporal picosecond laser-induced ablation dynamics of gold in air and water, revealing the significant influence of the water confinement layer on the entire investigated timescale from picoseconds to microseconds.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Instruments & Instrumentation
Evgeniy A. Redekop, Niclas Johansson, Esko Kokkonen, Samuli Urpelainen, Felipe Lopes da Silva, Mikko Kaipio, Heta-Elisa Nieminen, Foqia Rehman, Ville Miikkulainen, Mikko Ritala, Unni Olsbye
Summary: The experimental approach described in the text allows for synchronized perturbations of gas feed in an APXP cell with time-resolved X-ray photoelectron spectroscopy data acquisition, opening up new possibilities for investigating material properties and chemical reactions mediated by surfaces.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2021)
