Article
Optics
Jaeuk Kim, Salvatore Torquato
Summary: This study investigates the electromagnetic properties of one-dimensional disordered stealthy hyperuniform layered media and proposes an approximate formula for the effective dynamic dielectric constant tensor applicable to one-dimensional media. The research finds that stealthy hyperuniform layered media have perfect transparency intervals, while non-stealthy hyperuniform media are not perfectly transparent. The theoretical predictions are in good agreement with finite-difference time-domain simulations, providing a new approach for the inverse design of wave characteristics in disordered layered media.
Article
Physics, Multidisciplinary
Salvatore Torquato, Jaeuk Kim
Summary: This research introduces exact nonlocal homogenized constitutive relations to accurately predict and efficiently describe the effective electromagnetic wave properties of composite materials, surpassing traditional homogenization estimation methods. By calculating the microstructural information of the composite materials, closed-form approximate formulas for certain wave number ranges can be obtained, enhancing the prediction accuracy and computational efficiency of the wave characteristics.
Article
Mathematics
E. E. Torres-Miyares, G. Rojas-Lorenzo, J. Rubayo-Soneira, S. Miret-Artes
Summary: In this study, the stochastic wave function formalism is used to investigate the dynamics of Xe atoms adsorbed on a Pt(111) surface. The results include the calculation of the intermediate scattering function and the analysis of surface-adsorbate interaction. The numerical results show good agreement with experimental results and standard Langevin simulations.
Article
Astronomy & Astrophysics
Luca Buonocore, Massimiliano Grazzini, Jurg Haag, Luca Rottoli, Chiara Savoini
Summary: We propose a new k(T)(ness) variable to control the singularities of N+1-jet cross section and perform higher-order calculations in Quantum Chromodynamics. This variable performs well in evaluating next-to-leading order corrections for H+jet and Z+2 jet production at the LHC.
Article
Materials Science, Multidisciplinary
Ulrike Zweck, Michael Leitner
Summary: This study investigates the coarsening of three-dimensional antiphase domain structures through Monte Carlo simulations, revealing equivalent structures under models with the same ground-state degeneracy. Additionally, the concept of real-space and reciprocal-space scales is quantitatively discussed, providing numerically exact values for the corresponding parameter K of the Scherrer equation.
Article
Chemistry, Physical
Gerardo Campos-Villalobos, Giuliana Giunta, Susana Marin-Aguilar, Marjolein Dijkstra
Summary: This article introduces a method for particle-centered descriptors for non-spherical particle shapes and constructs effective many-body potentials using machine learning techniques. The accuracy of these orientation-dependent many-body potentials is validated through simulations of different model systems.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Physics, Fluids & Plasmas
I. Ouatu, B. T. Spiers, R. Aboushelbaya, Q. Feng, M. W. von der Leyen, R. W. Paddock, R. Timmis, C. Ticos, K. M. Krushelnick, P. A. Norreys
Summary: A paradigm shift is approaching in the physics of laser-plasma interactions with the commissioning of multipetawatt laser facilities worldwide. This work proposes a way of measuring the focused intensity on target through the ionization of xenon gas.
Article
Optics
Martin Fally, Yasuo Tomita, Antonio Fimia, Roque F. Madrigal, Jinxin Guo, Joachim Kohlbrecher, Juergen Klepp
Summary: We experimentally demonstrate how to accurately retrieve the refractive index profile of photonic structures using standard diffraction experiments and rigorous coupled-wave analysis in the multi-wave coupling regime, without the need for auxiliary data. By deliberately choosing a probe wavelength much smaller than the lattice constant, we show how to fully recover the phases of the Fourier components of a periodic structure. Additionally, we accurately determine the slight asymmetry of nanocomposite phase gratings through light and neutron diffraction measurements.
Article
Optics
Alexander Nahmad-Rohen, Augusto Garcia-Valenzuela
Summary: We propose a multiple-scattering model that accurately predicts the effective refractive index of dense suspensions of forward-scattering particles. The model offers a simple formula and transparent mathematical derivation, providing insights into the underlying physical processes. It can be used as a diagnostic tool for a wide range of complex materials.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
(2023)
Article
Chemistry, Physical
J. R. Manson, S. Miret-Artes
Summary: This article reviews the work of the authors over several years, aiming to develop theoretical frameworks using classical physics to describe the scattering interactions between atoms and surfaces.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
V. K. Sharma, J. Gupta, E. Mamontov
Summary: The anionic DMPG membrane exhibits anomalous melting behavior, which is suppressed by the addition of NaCl, leading to enhanced lipid dynamics.
Article
Multidisciplinary Sciences
I Taktak, M. Kapfer, J. Nath, P. Roulleau, M. Acciai, J. Splettstoesser, I Farrer, D. A. Ritchie, D. C. Glattli
Summary: In this study, a novel interferometric approach was used to demonstrate that anyons maintain quantum coherence while propagating. The results have positive implications for achieving controlled quantum coherent braiding of anyons.
NATURE COMMUNICATIONS
(2022)
Article
Environmental Sciences
Zhenhua Zhang, Peng Chen, Zhihua Mao, Dapeng Yuan
Summary: An effective lidar simulator is crucial for system design and processing algorithms due to the complexity of laser transmission in seawater. The multiple-scattering lidar model proposed in this study takes into account various parameters and shows good simulation performance, providing valuable insights for oceanic lidar system design and signal processing.
Article
Chemistry, Physical
Xiaoze Liu, Jun Yi, Sui Yang, Erh-Chen Lin, Yue-Jiao Zhang, Peiyao Zhang, Jian-Feng Li, Yuan Wang, Yi-Hsien Lee, Zhong-Qun Tian, Xiang Zhang
Summary: Nonlinear phonon scattering in monolayer MoS2 strongly coupled to a plasmonic cavity mode has been demonstrated, showing enhanced valley polarization and sustained coherence in the stimulated regime. This suggests the potential of valley-cavity-based systems for various applications in cavity quantum electrodynamics.
Article
Chemistry, Physical
R. Shanmuka Sundari, V. Vijay, V. Shalini, S. Harish, M. Shimomura, J. Archana, S. Ponnusamy, M. Navaneethan
Summary: By compositing with WS2 nanoparticles, the thermoelectric performance of Cu1.8S material was improved, achieving a minimum thermal conductivity of 1.4 W/mK and an increased figure of merit (zT) of 0.46 at 753 K, making it suitable for waste heat harvesting applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Environmental Sciences
Emilia Baszanowska, Zbigniew Otremba, Jacek Piskozub
Summary: This paper analyses the radiance reflectance modelling of a sea area polluted with an oil emulsion at different depths, and determines 555 nm as the optimal wavelength for oil emulsion detection based on the simulations. The study discusses the contrast parameter in relation to various thicknesses of polluted water layers, noting changes in contrast for layers closer to the sea surface.
Article
Optics
Geir Johnsen, Artur Zolich, Stephen Grant, Rune Bjorgum, Jonathan H. Cohen, David McKee, Tomasz P. Kopec, Daniel Vogedes, Jorgen Berge
Summary: This study provides a complete annual time series of light data from the Arctic using a camera system, analyzing the dynamics of irradiance and its relation to weather conditions, sun and moon trajectories.
Article
Engineering, Environmental
Giulia Castellani, Gaelle Veyssiere, Michael Karcher, Julienne Stroeve, S. Neil Banas, A. Heather Bouman, S. Andrew Brierley, Stacey Connan, Finlo Cottier, Fabian Grosse, Laura Hobbs, Christian Katlein, Bonnie Light, David McKee, Andrew Orkney, Roland Proud, Vibe Schourup-Kristensen
Summary: The Arctic marine ecosystem is heavily influenced by the seasonality of light, which affects its ecological balance. Climate change is predicted to cause future changes in under-ice light, with potential implications for ecosystems.
Article
Environmental Sciences
Zbigniew Otremba, Jacek Piskozub
Summary: This article presents simulation results that consider the optical parameters of a selected sea region and two types of optically extreme crude oil. The study examines the possibility of detecting pollution and determines a universal spectral index for different types of oil. The results suggest that observations under certain conditions are more effective in determining the spectral index.
Article
Environmental Sciences
Madjid Hadjal, Encarni Medina-Lopez, Jinchang Ren, Alejandro Gallego, David McKee
Summary: This paper demonstrates the retrieval of chlorophyll-a using artificial neural networks in the northwest European shelf seas. The neural networks improve performance and data availability compared to current algorithms, providing a solution for atmospheric correction in coastal waters. The approach also generates pixel-specific estimates of uncertainty in the final product.
Article
Biology
N. Soren Haefker, Stacey Connan-McGinty, Laura Hobbs, David McKee, Jonathan H. Cohen, Kim S. Last
Summary: Animal behavior is influenced by the day/night cycle and animals themselves modify the light environment through their movement. Investigating the light environment experienced by zooplankton undergoing diel vertical migration in an Arctic fjord provides insights into how animal behavior shapes the realized diel light niche (RDLN).
COMMUNICATIONS BIOLOGY
(2022)
Article
Meteorology & Atmospheric Sciences
Stacey Connan-McGinty, Neil S. Banas, Jorgen Berge, Finlo Cottier, Stephen Grant, Geir Johnsen, Tomasz P. Kopec, Marie Porter, David McKee
Summary: Arctic marine ecosystems are greatly affected by the extreme seasonal light changes, and accurate determination of light is crucial for understanding the dynamics of animal and aquatic algae populations. This study presents a model that accurately calculates the spectrally resolved underwater light in ice-free conditions in the Barents Sea, and demonstrates its validity throughout the year, including the Polar Night period.
JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
(2022)
Article
Chemistry, Analytical
Barbara Lednicka, Zbigniew Otremba, Jacek Piskozub
Summary: This study analyzes the possibility of detecting oil-in-water emulsions in the water column by modeling the downwelling radiance detected by a virtual underwater sensor. A Monte Carlo simulation was performed for eight wavelengths ranging from 412 to 676 nm, using dispersed oil with a concentration of 10 ppm. The optical properties of seawater typical for the southern Baltic Sea and the optical properties of crude oil extracted in this area were used for the modeling. Based on these assumptions and modeling, a spectral index was obtained, with the most favorable combination of 555/412 nm, which indicates the presence of an oil emulsion in the water.
Article
Environmental Sciences
Ivan J. Cautain, Kim S. Last, David McKee, Bodil A. Bluhm, Paul E. Renaud, Amanda F. Ziegler, Bhavani E. Narayanaswamy
Summary: This study investigates the assimilation of sympagic organic material (OM) by benthic organisms in the Arctic shelves and its variation with seasonal sea ice duration. The results show that sympagic OM can constitute a significant fraction of benthic diets and its assimilation is strongly correlated with sea ice cover duration. The importance of sympagic OM is more evident in the summer compared to winter, and its availability and patchiness play a role in carbon supply for Barents Sea benthos.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Optics
Stephen Grant, Geir Johnsen, David Mckee, Artur Zolich, Jonathan H. Cohen
Summary: The ArcLight observatory provides continuous time series of all-sky images and spectral irradiance data in the Arctic. They show variations in the RGB proportions of irradiance throughout the year, with the blue part showing the greatest variation. The study also demonstrates the biological impact of these spectral variations on the photoreceptor response.
Article
Environmental Sciences
Cait L. L. McCarry, Suennje L. Basedow, Emlyn J. J. Davies, David McKee
Summary: This study uses standardized ocean color imagery and radiative transfer modeling to identify reflectance anomalies potentially caused by surface swarms of Calanus finmarchicus in the northern Norwegian Sea. The results show high anomaly within the 'red' patch, indicating the presence of something other than the standard bio-optical model constituents. Optical closure is achieved through the addition of C. finmarchicus absorption into the model. The analysis suggests the potential for the over-estimation of chlorophyll concentrations if C. finmarchicus populations are present in the surface waters.
Article
Optics
Bernhard Schartmuller, Philip Anderson, David Mckee, Stacey Connan-Mcginty, Tomasz P. Kopec, Malin Daase, Geir Johnsen, Jorgen Berge
Summary: The optical chain and logger (OptiCAL) is an autonomous ice-tethered observatory equipped with multiple light sensors for mapping the variation of light with depth. It can cover a high dynamic range of under-ice light levels and produce realistic values compared to modeled surface irradiance. The raised light levels at specific depths associated with nearby leads in the ice highlight the importance of depth-resolved light measurements.
Article
Astronomy & Astrophysics
M. Lo Prejato, D. McKee
Summary: A spectral deconvolution model (SDM) is introduced for estimating the concentrations of chlorophyll, colored dissolved organic material (CDOM), and non-biogenic mineral suspended solids (MSS) in water. The SDM utilizes spectral information to estimate these parameters and shows better performance and adaptability compared to other methods.
EARTH AND SPACE SCIENCE
(2023)
Article
Environmental Sciences
T. J. Smyth, A. E. Wright, A. Edwards-Jones, D. McKee, A. Queiros, O. Rendon, S. Tidau, T. W. Davies
Summary: Half of globally significant megacities are located near the coast, posing multiple stressors to urban marine ecosystems. Artificial light at night (ALAN) pollution, in addition to other well recognized sources, has not been quantified adequately in marine ecosystems.
ELEMENTA-SCIENCE OF THE ANTHROPOCENE
(2022)
Article
Geosciences, Multidisciplinary
Andre Valente, Shubha Sathyendranath, Vanda Brotas, Steve Groom, Michael Grant, Thomas Jackson, Andrei Chuprin, Malcolm Taberner, Ruth Airs, David Antoine, Robert Arnone, William M. Balch, Kathryn Barker, Ray Barlow, Simon Belanger, Jean-Francois Berthon, Yngve Borsheim, Astrid Bracher, Vittorio Brando, Robert J. W. Brewin, Elisabetta Canuti, Francisco P. Chavez, Andres Cianca, Herve Claustre, Lesley Clementson, Richard Crout, Afonso Ferreira, Scott Freeman, Robert Frouin, Carlos Garcia-Soto, Stuart W. Gibb, Ralf Goericke, Richard Gould, Nathalie Guillocheau, Stanford B. Hooker, Chuamin Hu, Mati Kahru, Milton Kampel, Holger Klein, Susanne Kratzer, Raphael Kudela, Jesus Ledesma, Steven Lohrenz, Hubert Loisel, Antonio Mannino, Victor Martinez-Vicente, Patricia Matrai, David McKee, Brian G. Mitchell, Tiffany Moisan, Enrique Montes, Frank Muller-Karger, Aimee Neeley, Michael Novak, Leonie O'Dowd, Michael Ondrusek, Trevor Platt, Alex J. Poulton, Michel Repecaud, Rudiger Roettgers, Thomas Schroeder, Timothy Smyth, Denise Smythe-Wright, Heidi M. Sosik, Crystal Thomas, Rob Thomas, Gavin Tilstone, Andreia Tracana, Michael Twardowski, Vincenzo Vellucci, Kenneth Voss, Jeremy Werdell, Marcel Wernand, Bozena Wojtasiewicz, Simon Wright, Giuseppe Zibordi, Sukru Besiktepe
Summary: This article presents a global in situ data set for validating ocean colour products. The data set includes various observation variables and has undergone homogenization, quality control, and merging processes.
EARTH SYSTEM SCIENCE DATA
(2022)
