Article
Mechanics
A. Martinez-Calvo, D. Moreno-Boza, J. F. Guil-Pedrosa, A. Sevilla
Summary: In this study, we investigate the linear and nonlinear dynamics of a thin liquid film sandwiched between a solid substrate and an unbounded liquid bath. The flow behavior of the film is determined by two non-dimensional parameters, lambda and a dimensionless measure of the relative strengths of the surface tension force and the van der Waals force. We analyze the linear stability of the film and perform nonlinear simulations to study the spatial structure of the flow near rupture. The presence of an outer liquid bath affects the self-similar structure of the flow.
Article
Physics, Multidisciplinary
Roghayeh Shiri, Leonie Schmeller, Dirk Peschka, Ralf Seemann, Barbara Wagner
Summary: The authors combine experimental and theoretical results to study the dewetting processes of liquid bilayer systems, suggesting the need to develop new strategies for incorporating thermal fluctuations into modeling these processes.
COMMUNICATIONS PHYSICS
(2023)
Article
Engineering, Industrial
Guohong Zhang, Jianhui Qiu
Summary: The study proposed a third-phase ultrasonic thermal welding method for successfully joining incompatible thermoplastics, achieving optimal welded strength to meet the lightweight demand in the automotive industry. The welded interfacial morphology was found to be divided into four parts, and interdiffusion analysis revealed the structure of interdiffusion chains.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Mechanics
Eunseong Moon, Minho Song, Daegyoum Kim
Summary: The transport of liquid by a rising toroidal bubble that penetrates a horizontal interface between two immiscible liquids is experimentally investigated. The toroidal bubble carries a significant amount of the lower liquid due to self-induction of circulation. The lower liquid forms an ellipsoidal body enclosing the bubble, and the net force acting on it causes the contraction of the bubble and reduces the volume of the entrained lower liquid.
JOURNAL OF FLUID MECHANICS
(2023)
Article
Mechanics
Feng Wang, Li Chen, Yuqi Li, Xi Gu, Peng Huo, Man Hu, Daosheng Deng
Summary: In this work, we study the dynamics of a hexadecane droplet impacting and freezing on a supercooled immiscible water pool. We identify three phases of droplet dynamics: jet phase, flat phase, and bowl phase. These phases depend on the degree of supercooling or water temperature. Scaling analysis confirms the experimental observations, with the transition between phases primarily determined by the supercooling temperature.
Article
Materials Science, Multidisciplinary
Mor Levi, Anuj Bisht, Eugen Rabkin
Summary: This study reports the phenomenon of diffusion-induced recrystallization (DIR) in Ni-Pt bilayers during annealing at 950 degrees C. Short annealing times led to heterogeneous intermixing, while further annealing resulted in preferential growth of specific grain orientations. Prolonged annealing at high temperatures led to complete dissolution of the bilayers, forming homogeneous single crystalline nanoparticles.
Article
Chemistry, Multidisciplinary
Yuna Bae, Min Young Ha, Ki-Taek Bang, Sanghee Yang, Sung Yun Kang, Joodeok Kim, Jongbaek Sung, Sungsu Kang, Dohun Kang, Won Bo Lee, Tae-Lim Choi, Jungwon Park
Summary: This paper utilizes liquid-phase transmission electron microscopy to track the real-time dynamics of single-chain polymers, revealing the conformational characteristics of these polymers and their dependence on intrachain interactions and environmental factors.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Andrey Milchev, Kurt Binder
Summary: This study investigates the behavior of two types of semiflexible polymers with the same chain length but different persistence lengths, confined between parallel repulsive walls. The formation of nematic layers near the walls is observed at specific concentrations. In the ordered phase, both self-diffusion and interdiffusion of chains are significantly slowed down, which has implications for the production of polymeric coatings.
Article
Materials Science, Multidisciplinary
M. Seyring, F. Wanierke, T. Kaaden, S. Lippmann, M. Rettenmayr
Summary: The study demonstrates the significant influence of natural oxide layers on the formation of Ni3Al phase at (Ni)/NiAl interfaces. These oxide layers act as diffusion barriers, retarding or locally suppressing growth of Ni3Al into the (Ni) phase. Removing the oxide layers leads to higher interdiffusion coefficients in diffusion couples.
MATERIALS CHARACTERIZATION
(2021)
Article
Mechanics
Zhongyuan Ni, Fuqiang Chu, Shaokang Li, Jia Luo, Dongsheng Wen
Summary: This study investigates metastable liquid film dewetting on superhydrophobic surfaces induced by dry hole growth through a combination of experimental and theoretical analysis. It is found that the growth behavior of dry holes can lead to liquid film dewetting. Theoretical analysis reveals that the behavior of the holes is influenced by the competition between capillary force and hydrostatic pressure, and the scale of the dewetting area is affected by the Young-Laplace equation and the shape of the superhydrophobic surface.
Review
Chemistry, Physical
Silvia Voci, Jeffrey E. Dick
Summary: Molecular dynamics simulations and vibrational sumfrequency spectroscopy have been historically used to study the molecular structure and dynamics of immiscible liquid-liquid interfaces. Recent electrochemical studies have revealed a deeper and larger interface, contradicting previous estimates. The role of electrochemists in clarifying this fundamental question is discussed.
CURRENT OPINION IN ELECTROCHEMISTRY
(2023)
Article
Polymer Science
Aliaksei Aliakseyeu, Parin Purvin Shah, John F. Ankner, Svetlana A. Sukhishvili
Summary: This study investigates the impact of salt on the diffusion properties of polyelectrolytes with different molecular structures in layer-by-layer films. Fluorescence recovery after photobleaching (FRAP) and neutron reflectivity (NR) techniques were used to analyze the diffusion behavior parallel and perpendicular to the substrate, respectively. The results reveal that the diffusion of star-shaped PMAA is lower than linear PMAA at salt concentrations below 0.22 M NaCl, but increases at higher salt concentrations. These findings provide valuable insights into the diffusion of polyelectrolyte chains in multilayer films and coacervates.
Article
Polymer Science
Ana Rita Bras, Ana Arizaga, Daria Sokolova, Uxue Agirre, Maria Teresa Viciosa, Aurel Radulescu, Sylvain Francois Prevost, Margarita Kruteva, Wim Pyckhout-Hintzen, Annette Monika Schmidt
Summary: This study focuses on the effects of polymer polarity and hydrogen-bonding strength on the structure and dynamics of supramolecular model polymers. The results show that lower polarity leads to stronger associations and the hydrogen-bonding dynamics are influenced by the main chain polarity.
Article
Polymer Science
Felipe L. Paiva, Argimiro R. Secchi, Veronica Calado, Joao Maia, Shaghayegh Khani
Summary: By applying a segmental repulsive potential within the dissipative particle dynamics framework in a multiphase scenario, researchers have been able to better simulate entanglements and address shear flow and relaxation behaviors, resulting in more realistic and viscoelastic polymer rheological behavior. This structure-property relationship not only applies to flow-induced blend microstructures that become kinetically trapped by Janus/homogeneous nanorods, but also to blends without any stabilizing agents.
Article
Chemistry, Physical
Khristine Haydukivska, Ostap Kalyuzhnyi, Viktoria Blavatska, Jaroslav Ilnytskyi
Summary: The study focuses on the conformational properties of multiply branched polymer macromolecules in dilute solution state, utilizing the universality concept originated in critical phenomena and scaling properties of polymers. By comparing universal ratios of shape characteristics, the differences in energy and length scales are eliminated, leading to a quantitative description of swelling effects and spatial extension of pom-pom molecules. The combination of theoretical and simulation approaches provides a thorough understanding of the unique characteristics of these molecules.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Multidisciplinary Sciences
Amandine Lechantre, Ayrton Draux, Hoa-Ai Beatrice Hua, Denis Michez, Pascal Damman, Fabian Brau
Summary: By studying the mechanism of bees collecting nectar, it was found that the relaxation dynamics of papillae opening play a key role in fluid capture. The elastic recoil and viscous dissipation of papillae affect the efficiency of capture during the process, ultimately determining how bees adapt to changes in the sugar content of nectar.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Chemistry, Physical
Mykhailo Chundak, Claude Poleunis, Vincent Delmez, Alain M. Jonas, Arnaud Delcorte
Summary: This article proposes a new approach to study the temperature dependence of the structural and mechanical changes occurring at the Curie point at the surface of ferroelectric polymers. The developed approach, named gas cluster ion scattering spectrometry (GCISS), proves to be a versatile method for the local measurement of structural changes occurring in polymer thin films.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Physics, Multidisciplinary
Marine Luciano, Shi-Lei Xue, Winnok H. De Vos, Lorena Redondo-Morata, Mathieu Surin, Frank Lafont, Edouard Hannezo, Sylvain Gabriele
Summary: Experiments on cell monolayers on corrugated hydrogels reveal the effects of local curvature on the shape of cells and nuclei. A vertex model lends support to the idea that the modulation of tissue thickness may enable curvature sensing.
Article
Chemistry, Physical
Jie Li, Qian Qin, Sinan Kardas, Mathieu Fossepre, Mathieu Surin, Antony E. Fernandes, Karine Glinel, Alain M. Jonas
Summary: The efficiency of cooperative catalysts is influenced by the probabilities of chance encounter between different catalytic units. Connecting these units along a short flexible oligomeric chain increases these probabilities. The sequence position of a catalytic triad along a flexible backbone also plays a significant role, as interchanging two groups in the oligomer sequence can lead to a magnitude change in catalytic activity. Molecular graphs computed from molecular dynamics simulations provide insights into the dependence of functional connections between catalytic groups on sequence order.
Article
Chemistry, Multidisciplinary
Wanlin Xu, Peyman Malek Mohammadi Nouri, Sophie Demoustier-Champagne, Karine Glinel, Alain M. Jonas
Summary: The commensal skin bacterium S. epidermidis provides benefits to human hosts but can also act as a pathogen. Developing a bacterial patch that can trap and maintain the metabolic activity of S. epidermidis is important for bacteriotherapeutical applications.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Biochemistry & Molecular Biology
Wallis Nahaboo, Sema Elif Eski, Evangeline Despin-Guitard, Marjorie Vermeersch, Marie Versaevel, Bechara Saykali, Daniel Monteyne, Sylvain Gabriele, Thomas M. Magin, Nicole Schwarz, Rudolf E. Leube, An Zwijsen, David Perez-Morga, Sumeet Pal Singh, Isabelle Migeotte
Summary: Mesoderm is important for the development of both the mouse embryo and its extra-embryonic membranes. This study found that keratin filaments play a role in the expansion of extra-embryonic structures and revealed the influence of substrate rigidity and composition on cell behavior and keratin content in mesoderm explants.
Article
Chemistry, Medicinal
Sinan Kardas, Mathieu Fossepre, Vincent Lemaur, Antony E. Fernandes, Karine Glinel, Alain M. Jonas, Mathieu Surin
Summary: Similar to DNA and proteins, precise control over the monomer position in sequence-defined polymers is important for achieving specific functions. In this study, molecular network analysis was used to investigate the influence of oligomer sequence and spacer length on the chain organization of trifunctional catalytic oligomers. The findings highlight the importance of tuning the primary structures for enhanced catalytic activities, and this approach can assist in the rational design of sequence-defined catalytic oligomers.
JOURNAL OF CHEMICAL INFORMATION AND MODELING
(2022)
Review
Cell Biology
Yohalie Kalukula, Andrew D. Stephens, Jan Lammerding, Sylvain Gabriele
Summary: The nucleus plays a critical role in determining cell fate and function in response to signals and stimuli. It is constantly exposed to mechanical forces that trigger changes in nuclear structure. Recent data suggest that the physical deformation of the nucleus modulates cellular and nuclear functions.
NATURE REVIEWS MOLECULAR CELL BIOLOGY
(2022)
Editorial Material
Oncology
Yohalie Kalukula, Marine Luciano, Sylvain Gabriele
CLINICAL AND TRANSLATIONAL MEDICINE
(2022)
Article
Multidisciplinary Sciences
Valentine Seveau de Noray, Fabio Manca, Ines Mainil, Alexandre Remson, Martine Biarnes-Pelicot, Sylvain Gabriele, Marie-Pierre Valignat, Olivier Theodoly
Summary: This study reveals the orientation phenomenon of keratocyte cells in flow, which depends on the mechanical interaction between the cell morphology and the flow. The research finds that the orientation of the cell is stabilized by the hydrodynamical torque generated by the shape of the trailing edge, while the wide and flat leading edge destabilizes the orientation.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Chemistry, Physical
Patrick James Cruz, Pierre-Paul De Breuck, Gian-Marco Rignanese, Karine Glinel, Alain M. Jonas
Summary: This study investigates the impact behavior of water droplets on fabrics of different roughness and coating types. Fabrics with low roughness show lower contact angle and no roll-off, while rougher fabrics have higher contact angles and lower roll-off angles. The restitution of kinetic energy upon rebound is proportional to 1/We, indicating a constant rebound height independent of the impact velocity. Furthermore, the type of coating affects the roll-off angle, the range of Weber numbers for rebound, and to some extent, the restitution coefficient.
SURFACES AND INTERFACES
(2023)
Article
Multidisciplinary Sciences
Jiangkun Wei, Alejandro Rico-Guevara, Susan W. Nicolson, Fabian Brau, Pascal Damman, Stanislav N. Gorb, Zhigang Wu, Jianing Wu
Summary: This study reveals the multiple strategies used by honey bees to efficiently extract nectar, including dipping their tongues, capillary loading, and sucking nectar along the tongue sides. These versatile feeding mechanisms enable honey bees to extract nectar from a wider range of floral resources and adapt to diverse foraging environments.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Engineering, Biomedical
Marine Luciano, Marie Versaevel, Yohalie Kalukula, Sylvain Gabriele
Summary: This study investigates the mechanoresponse of epithelial tissues to changes in curvature using bowl-shaped microwells in hydrogels. The results show that both in-plane and Gaussian curvatures influence cell behavior, cell cytoskeleton reorganization, and nuclear orientation. This research provides a better understanding of the mechanoresponse of curved epithelial tissues and offers a powerful platform for studying curvature-dependent mechanotransduction pathways in anatomically relevant 3D structures.
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Chemistry, Physical
Jiangkun Wei, Fabian Brau, Pascal Damman, Ayrton Draux, Hoa-Ai Beatrice Hua, Zhigang Wu, Jianing Wu
Summary: This study proposes two physical models to explain the transition between sucking and lapping feeding strategies in honey bees, and the results are consistent with in vivo measurements. This research may further inspire the design of microfluidic devices with higher capability of transporting liquids of different viscosities.
Review
Chemistry, Multidisciplinary
Shouwei Zhang, Fan Xia, Sophie Demoustier-Champagne, Alain M. Jonas
Summary: Layer-by-layer assembly is a versatile technology for constructing multifunctional nanomaterials with fine control over thickness and structure, suitable for various applications in nanochannels with different growth mechanisms. It shows potential for numerous applications in fields such as nanoreactors, drug delivery, and fluidic devices.
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.
