Article
Physics, Applied
Yoshika Yato, Rei Tatsumi, Yoshiko Tsuji
Summary: The study investigates how the fabrication conditions of self-assembled colloidal films affect their structural color. Two numerical simulation techniques are combined to analyze the microstructure and calculate the structural color intensity. The study suggests that a larger surface tension of the solvent and a smaller drying rate improve the structural color intensity.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Lukas Windgaetter, Malte Rosner, Giacomo Mazza, Hannes Huebener, Antoine Georges, Andrew J. Millis, Simone Latini, Angel Rubio
Summary: Through first-principles calculations, it was found that the structural phase transition in Ta2NiSe5 and Ta2NiS5 is driven by phonon instabilities rather than excitonic instabilities. Phonons break the crystal symmetry, leading to changes in the electronic band structure.
NPJ COMPUTATIONAL MATERIALS
(2021)
Correction
Multidisciplinary Sciences
Ariel Norambuena, Felipe J. Valencia, Francisca Guzman-Lastra
Summary: An amendment to this paper has been published.
SCIENTIFIC REPORTS
(2022)
Article
Multidisciplinary Sciences
Stephen Williams, Raphael Jeanneret, Idan Tuval, Marco Polin
Summary: Understanding how order emerges in active matter can help control microscopic objects on a macroscopic scale. This study demonstrates the control of passive microscopic particles in the presence of motile algae and boundary-induced accumulation of microswimmers, and the experimental realization of de-mixing of an active-passive suspension, providing a way to manipulate colloidal objects through controlled activity fields.
NATURE COMMUNICATIONS
(2022)
Article
Physics, Multidisciplinary
F. Mercier, J. Zhao, J-P Ebran, E. Khan, T. Niksic, D. Vretenar
Summary: A microscopic calculation of half-lives for the alpha and 2 alpha decays of Po-212 and Ra-224 was performed using a self-consistent framework based on energy density functionals. The calculated half-lives for the alpha decay of Po-212 and Ra-224 are in good agreement with experimental data. A new decay mode, symmetric 2 alpha emission, with half-lives similar to cluster emission, was predicted.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Particles & Fields
Haryanto M. Siahaan
Summary: The paper presents a novel solution describing magnetized spacetime outside an electrically charged object with NUT parameter. The solution is obtained by applying Ernst magnetization to the Reissner-Nordstrom-Taub-NUT spacetime as a seed. After discussing some physical aspects, it is shown that the extremal entropy of a magnetized Reissner-Nordstrom-Taub-NUT black hole can be reproduced using the Cardy formula.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Chemistry, Physical
Clemens Moritz, Phillip L. Geissler, Christoph Dellago
Summary: The study explores the initial stages of homogeneous melting of a hexagonal ice crystal, revealing the significant role of 5+7 type defects in the formation of the initial liquid nucleus. Like other solids, ice homogeneously melts through the prior accumulation of defects.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Physics, Multidisciplinary
Andreas Neophytou, Dwaipayan Chakrabarti, Francesco Sciortino
Summary: This article demonstrates through experiments that the liquid-liquid phase transition in tetrahedral networks can be described as a transition between an unentangled, low-density liquid and an entangled, high-density liquid, with a clear topological distinction between the two phases.
Article
Chemistry, Multidisciplinary
Mehmet Emin Kilic, Kwang-Ryeol Lee
Summary: A new two-dimensional boron nitride structure, th-BN, with perfectly ordered arrangements of tetragonal and hexagonal rings is predicted to be energetically, dynamically, thermally, and mechanically stable. th-BN exhibits exceptional mechanical properties such as high in-plane stiffness and tunable Poisson's ratio. It also shows high optical absorption in the ultraviolet region and can be stacked into different configurations with exotic electronic properties, making it suitable for high-performance optoelectronic device applications.
Article
Engineering, Chemical
Meng Li, Yuhang Wu, Yunqiang Qian, Xizhong An, Huanyu Li
Summary: In this study, the mixing process and flow behavior of different-shaped sphero-cylinders in a rotating drum were numerically investigated. It was found that sphero-cylinders of different aspect ratios can reach well-mixed states under sufficient rotation conditions, with the flow behavior influenced by rotation speed and AR.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Zhisheng Wang, Wei Xu, Zuochen Wang, Dengping Lyu, Yijiang Mu, Wendi Duan, Yufeng Wang
Summary: A novel method for preparing micromotors was reported, in which metal-organic framework microcrystals with polyhedral shapes are propelled under an AC electric field to break symmetry and achieve propulsion. By controlling the orientation of particles to generate uneven electrohydrodynamic flow, micromotors propulsion is achieved.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Multidisciplinary Sciences
Fan Cui, Sophie Marbach, Jeana Aojie Zheng, Miranda Holmes-Cerfon, David J. Pine
Summary: This article investigates the DNA-mediated interactions between colloids and proposes a theoretical model to predict the molecular-level behavior of adhesion and melting. By combining experimental measurements and theoretical analysis, the study provides a quantitative and predictive approach for guiding material design with DNA nanotechnology.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Wendong Wang, Gaurav Gardi, Paolo Malgaretti, Vimal Kishore, Lyndon Koens, Donghoon Son, Hunter Gilbert, Zongyuan Wu, Palak Harwani, Eric Lauga, Christian Holm, Metin Sitti
Summary: This study investigates the relationship between information, structure, and interactions by using self-organizing spinning magnetic micro-disks as a model experimental system. The findings demonstrate a direct link between information and structure, and establish the Shannon entropy by neighbor distances as a powerful observable for characterizing structural changes. These findings are important for analyzing natural self-organizing systems and designing collective robots.
Review
Multidisciplinary Sciences
C. Gonzalez-Ballestero, M. Aspelmeyer, L. Novotny, R. Quidant, O. Romero-Isart
Summary: The control and manipulation of levitated nano- and micro-objects in vacuum, utilizing scientific achievements in various disciplines, offer great potential for both scientific research and technological applications. Recent experimental successes, such as achieving motional ground-state cooling of optically levitated nanoparticles, have opened up attractive research directions ranging from fundamental quantum physics to commercial sensors. Levitodynamics, as a multidisciplinary research area, is devoted to understanding, controlling, and utilizing levitated nano- and micro-objects in vacuum.
Article
Physics, Fluids & Plasmas
Yasufumi Yamamoto, Koki Yamada, Yohsuke Tanaka, Shusaku Harada
Summary: The study investigated the mixing of stratified suspensions with different types of particles using numerical experiments and theoretical models. Two types of mixing behaviors at different scales were discovered, along with an examination of vertical mixing speed. The introduction of a nondimensional parameter helped distinguish between microscopic and macroscopic mixing forms.
Article
Physics, Condensed Matter
G. P. Shrivastav, G. Kahl
CONDENSED MATTER PHYSICS
(2020)
Article
Chemistry, Physical
Benedikt Hartl, Shubham Sharma, Oliver Bruegner, Stijn F. L. Mertens, Michael Walter, Gerhard Kahl
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
(2020)
Article
Meteorology & Atmospheric Sciences
Lukas Strauss, Stefano Serafin, Manfred Dorninger
JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY
(2020)
Article
Chemistry, Physical
Davide Pini, Markus Weissenhofer, Gerhard Kahl
JOURNAL OF CHEMICAL PHYSICS
(2020)
Article
Materials Science, Multidisciplinary
Johannes Kalliauer, Gerhard Kahl, Stefan Scheiner, Christian Hellmich
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2020)
Article
Engineering, Aerospace
Frank Holzaepfel, Lukas Strauss, Carsten Schwarz
Summary: The study developed the Wake Vortex Prediction System (WSVS) to increase airport capacity by dynamically adjusting aircraft separations based on aircraft type pairing, weather conditions, and wake vortex behavior. Simulation results demonstrate the system's safety and potential for reducing aircraft separations under strong crosswind conditions.
AEROSPACE SCIENCE AND TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Benedikt Hartl, Maximilian Hubl, Gerhard Kahl, Andreas Zottl
Summary: This study introduces a computational model where microswimmers can autonomously navigate in diverse chemical environments and control their shape deformations. Simple neural networks evolve to control the behavior of the microswimmers through the use of an evolutionary algorithm.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Engineering, Aerospace
Frank Holzapfel, Anton Stephan, Grigory Rotshteyn, Stephan Korner, Norman Wildmann, Lothar Oswald, Thomas Gerz, Gunther Borek, Alexander Floh, Christian Kern, Markus Kerschbaum, Roman Nossal, Johannes Schwarzenbacher, Martin Strobel, Lukas Strauss, Clemens Weiss, Sebastian Kauczok, Christian Schiefer, Harald Czekala, Gerrit Maschwitz, Igor Smalikho
Summary: Plate lines have been developed to mitigate the risk of wake vortex encounters during final approach by reducing the lifetime of wake vortices. Studies show that at Vienna International Airport, the use of plate lines can reduce wake vortex lifetimes by 22-37%, depending on the aircraft type.
Article
Physics, Multidisciplinary
S. -C. Lin, M. Oettel, J. M. Haering, R. Haussmann, M. Fuchs
Summary: Direct correlation functions play a fundamental role in statistical mechanics, particularly in ordered phases. Through a demanding numerical approach, the DCF of a solid has been explicitly calculated for the first time, providing new insights into the elastic constants. It was found that the DCF of a solid significantly differs from its liquid counterpart at coexistence, mainly due to the influence of vacancies.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Physical
Alexander Stadik, Gerhard Kahl
Summary: By using Monte Carlo simulations, the properties of deformable fluid particles in a porous matrix were studied, showing that the change in shape is related to changes in energy and has a distinct impact on the system's static and dynamic properties.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Chemistry, Physical
R. Melnyk, Y. Kalyuzhnyi, G. Kahl, A. Baumketner
Summary: In this study, the effects of molecule shape and interaction range on the critical behavior of a model fluid system are investigated. It is found that increasing molecule asphericity decreases the critical temperature, while the critical density depends on both the range of attraction and the asphericity of the molecule.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Saswati Ganguly, Gaurav Prakash Shrivastav, Shang-Chun Lin, Johannes Haering, Rudolf Haussmann, Gerhard Kahl, Martin Oettel, Matthias Fuchs
Summary: Different types of defects play a significant role in the mechanical response of complex crystals close to melting or at finite temperatures. Conventional elasticity theory fails to explain the motion of point defects in ordered crystalline structures. In this study, a first principles theoretical framework derived from microscopic equations of motion is used to investigate the elastic properties of a crystal with a high concentration of point defects. Predictions about the mechanical properties are validated through deformation experiments in molecular dynamics simulations.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Meteorology & Atmospheric Sciences
Lukas Strauss, Stefano Serafin, Manfred Dorninger
Summary: This study explores the potential of a multiphysics regional ensemble prediction system to improve wind turbine icing forecasts. It found that the multiphysics ensemble is less underdispersive compared to the global ensemble without significantly decreasing forecast accuracy. Probability forecasts enhance the potential economic value, but the improvement of the multiphysics ensemble seems modest compared to a simple neighbourhood ensemble approach. Icing forecasts are affected by overconfidence and require calibration for users to benefit from them. Overall, the findings suggest that a computationally cheap neighbourhood method can provide a large portion of the skill improvement obtained through the use of probabilistic icing forecasts.
QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY
(2022)
Editorial Material
Physics, Condensed Matter
Marcia C. Barbosa, Ana Laura Benavides, Manuel Carlevaro, Gerhard Kahl, Enrique Lomba
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Chemistry, Physical
Gaurav P. Shrivastav, Gerhard Kahl
Summary: Research shows that the yielding behavior of crystals under shear is more related to the plastic deformation of the crystalline structure rather than the diffusion of particles. Local bond order parameters and the measurement of local angles between neighboring clusters confirm the cooperative movement of clusters near the yield point in cluster crystals.
Article
Chemistry, Physical
Yiping Yin, Zhe Wang, Hua Zou
Summary: This study presents a novel method for preparing dimpled polymer-silica nanocomposite particles using interfacial swelling-based seeded polymerization. The optimized conditions allow for a relatively high percentage of dimpled particles to be achieved.
Article
Chemistry, Physical
Brenden D. Hoehn, Elizabeth A. Kellstedt, Marc A. Hillmyer
Summary: Porous materials with nanometer-scale pores have important applications as nanoporous membranes. In this study, ABA triblock copolymers were used as precursors to produce nanoporous polymeric membranes (NPMs) in thin film form by degrading the end blocks. Polycyclooctene (PCOE) NPMs with tunable pore sizes were successfully prepared using solvent casting technique. Oxygen plasma etching was employed to improve the surface porosity and hydrophilicity of the membranes. This study provides a straightforward method to produce tough NPMs with high porosity and hydrophilic surface properties.
Article
Chemistry, Physical
Vladislav S. Petrovskii, Stepan I. Zholudev, Igor I. Potemkin
Summary: This article investigates the behavior of linear and ring polypeptide chains in aqueous solution and explores the properties of the complexes formed by these chains with oppositely charged surfactants. The results demonstrate that the complexes of linear supercharged unfolded polypeptides and the corresponding surfactants exhibit impressive adhesive properties.
Article
Chemistry, Physical
Merve Cevik, Serkan Dikici
Summary: Cardiovascular diseases are a leading cause of death globally, and vascular grafts are a promising treatment option. This study focuses on tissue-engineered vascular grafts (TEVGs) using decellularized parsley stems as a potential biomaterial. The decellularized parsley stems showed suitable properties for TEVGs, providing a suitable environment for human endothelial cells to form a pseudo endothelium. This study showcases the potential of using parsley stems for TEVGs.
Article
Chemistry, Physical
Gustavo A. Vasquez-Montoya, Tadej Emersic, Noe Atzin, Antonio Tavera-Vazquez, Ali Mozaffari, Rui Zhang, Orlando Guzman, Alexey Snezhko, Paul F. Nealey, Juan J. de Pablo
Summary: The optical properties of liquid crystals are typically controlled by electric fields. In this study, we investigate the effects of microfluidic flows and acoustic fields on the molecular orientation and optical response of nematic liquid crystals. We identify several previously unknown structures and explain them through calculations and simulations. These findings hold promise for the development of new systems combining sound, flow, and confinement.
Article
Chemistry, Physical
Xinjun Wu, Xin Guan, Shushu Chen, Jiangpeng Jia, Chongyi Chen, Jiawei Zhang, Chuanzhuang Zhao
Summary: This research presents a novel shape memory hydrogel with a remodelable permanent shape and programmable cold-induced shape recovery behavior. The hydrogel is prepared using specific treatment methods to achieve shape fixation by heating and shape recovery by cooling. Additionally, deformable devices can be obtained by assembling hydrogel blocks with different concentrations.
Article
Chemistry, Physical
Rebecca Hengsbach, Gerhard Fink, Ulrich Simon
Summary: This study examines the properties of DNA functionalized pNipmam microgels and pure pNipmam microgels at different concentrations of sodium chloride and in PBS solutions using temperature dependent H-1-NMR measurements. The results show that DNA modification affects the volume phase transition temperature and the addition of salt and PBS further enhances this effect.
Article
Chemistry, Physical
Ningyi Li, Junhong Li, Lijingting Qing, Shicheng Ma, Yao Li, Baohui Li
Summary: This paper investigates the self-assembly behavior of colloids with competing interactions under spherical confinement and finds that different ordered structures can be formed under different sized spherical confinements. Moreover, more perforated structures are formed in smaller spheres.