Soft Matter最新文献_第10页

Quantifying memory: detection of focal conic domain rearrangement across a phase transition†

IF 2.9 3区化学

Soft Matter Pub Date : 2025-02-17 DOI: 10.1039/D4SM00940A

Sean Hare, Alexander de la Vega and Francesca Serra

引用次数: 0

Demixing of an active-passive binary mixture through a two-dimensional elastic meshwork†

IF 2.9 3区化学

Soft Matter Pub Date : 2025-02-17 DOI: 10.1039/D4SM01443J

Ramanand Singh Yadav and Rajarshi Chakrabarti

引用次数: 0

Peptide-mediated liquid–liquid phase separation and biomolecular condensates†

IF 2.9 3区化学

Soft Matter Pub Date : 2025-02-15 DOI: 10.1039/D4SM01477D

Guangle Li, Chengqian Yuan and Xuehai Yan

{"title":"Peptide-mediated liquid–liquid phase separation and biomolecular condensates†","authors":"Guangle Li, Chengqian Yuan and Xuehai Yan","doi":"10.1039/D4SM01477D","DOIUrl":"10.1039/D4SM01477D","url":null,"abstract":"Liquid–liquid phase separation (LLPS) is a cornerstone of cellular organization, driving the formation of biomolecular condensates that regulate diverse biological processes and inspire innovative applications. This review explores the molecular mechanisms underlying peptide-mediated LLPS, emphasizing the roles of intermolecular interactions such as hydrophobic effects, electrostatic interactions, and π–π stacking in phase separation. The influence of environmental factors, such as pH, temperature, ionic strength, and molecular crowding on the stability and dynamics of peptide coacervates is examined, highlighting their tunable properties. Additionally, the unique physicochemical properties of peptide coacervates, including their viscoelastic behavior, interfacial dynamics, and stimuli-responsiveness, are discussed in the context of their biological relevance and engineering potential. Peptide coacervates are emerging as versatile platforms in biotechnology and medicine, particularly in drug delivery, tissue engineering, and synthetic biology. By integrating fundamental insights with practical applications, this review underscores the potential of peptide-mediated LLPS as a transformative tool for advancing science and healthcare.","PeriodicalId":103,"journal":{"name":"Soft Matter","volume":" 10","pages":" 1781-1812"},"PeriodicalIF":2.9,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Precisely controlled colloids: a playground for path-wise non-equilibrium physics

IF 2.9 3区化学

Soft Matter Pub Date : 2025-02-14 DOI: 10.1039/D4SM01189A

Cai Dieball, Yasamin Mohebi Satalsari, Angel B. Zuccolotto-Bernez, Stefan U. Egelhaaf, Manuel A. Escobedo-Sánchez and Aljaž Godec

{"title":"Precisely controlled colloids: a playground for path-wise non-equilibrium physics","authors":"Cai Dieball, Yasamin Mohebi Satalsari, Angel B. Zuccolotto-Bernez, Stefan U. Egelhaaf, Manuel A. Escobedo-Sánchez and Aljaž Godec","doi":"10.1039/D4SM01189A","DOIUrl":"10.1039/D4SM01189A","url":null,"abstract":"We investigate path-wise observables in experiments on driven colloids in a periodic light field to dissect selected intricate transport features, kinetics, and transition-path time statistics out of thermodynamic equilibrium. These observables directly reflect the properties of individual paths in contrast to the properties of an ensemble of particles, such as radial distribution functions or mean-squared displacements. In particular, we present two distinct albeit equivalent formulations of the underlying stochastic equation of motion, highlight their respective practical relevance, and show how to interchange between them. We discuss conceptually different notions of local velocities and interrogate one- and two-sided first-passage and transition-path time statistics in and out of equilibrium. Our results reiterate how path-wise observables may be employed to systematically assess the quality of experimental data and demonstrate that, given sufficient control and sampling, one may quantitatively verify subtle theoretical predictions.","PeriodicalId":103,"journal":{"name":"Soft Matter","volume":" 11","pages":" 2170-2181"},"PeriodicalIF":2.9,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/sm/d4sm01189a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143481882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Turing patterns on polymerized membranes: coarse-grained lattice modelling with an internal degree of freedom for polymer direction†

IF 2.9 3区化学

Soft Matter Pub Date : 2025-02-13 DOI: 10.1039/D4SM01309C

Fumitake Kato, Hiroshi Koibuchi, Elie Bretin, Camille Carvalho, Roland Denis, Simon Masnou, Madoka Nakayama, Sohei Tasaki and Tetsuya Uchimoto

{"title":"Turing patterns on polymerized membranes: coarse-grained lattice modelling with an internal degree of freedom for polymer direction†","authors":"Fumitake Kato, Hiroshi Koibuchi, Elie Bretin, Camille Carvalho, Roland Denis, Simon Masnou, Madoka Nakayama, Sohei Tasaki and Tetsuya Uchimoto","doi":"10.1039/D4SM01309C","DOIUrl":"10.1039/D4SM01309C","url":null,"abstract":"We numerically study Turing patterns (TPs) on two-dimensional surfaces with a square boundary in R3 using a surface model for polymerized membranes. The variables used to describe the membranes correspond to two distinct degrees of freedom: an internal degree of freedom for the polymer directions in addition to the positional degree of freedom. This generalised surface model enables us to identify non-trivial interference between the TP system and the membranes. To this end, we employ a hybrid numerical technique, utilising Monte Carlo updates for membrane configurations and discrete time iterations for the FitzHugh–Nagumo type Turing equation. The simulation results clearly show that anisotropies in the mechanical deformation properties, particularly the easy axes associated with the stretching and bending of the membranes, determine the direction of the TPs to be perpendicular or parallel to the easy axes. Additionally, by calculating the dependence of the maximum entropy on the internal degree of freedom, we can obtain information on the relaxation with respect to the polymer structure. This crucial information serves to remind us that non-equilibrium configurations can be captured within the canonical Monte Carlo simulations.","PeriodicalId":103,"journal":{"name":"Soft Matter","volume":" 12","pages":" 2317-2338"},"PeriodicalIF":2.9,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143514288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Urea and salt induced modulation of protein interactions: implications for crystallization and liquid–liquid phase separation†

IF 2.9 3区化学

Soft Matter Pub Date : 2025-02-13 DOI: 10.1039/D4SM01392A

M. Madani, T. Hamacher and F. Platten

{"title":"Urea and salt induced modulation of protein interactions: implications for crystallization and liquid–liquid phase separation†","authors":"M. Madani, T. Hamacher and F. Platten","doi":"10.1039/D4SM01392A","DOIUrl":"10.1039/D4SM01392A","url":null,"abstract":"Urea is a well-known protein denaturant if added at high concentrations. The unfolding of proteins induced by urea is typically attributed to specific mechanisms; however, the influence of urea on protein–protein interactions, which can give rise to protein crystallization and liquid–liquid phase separation (LLPS), remains less understood. In this study, we examine the modulation of protein–protein interactions by urea at non-denaturing concentrations, in combination with sodium chloride. The effects of these additives on the state diagram and protein–protein interactions in lysozyme solutions are analyzed using optical microscopy and small-angle X-ray scattering (SAXS), respectively. Our findings indicate that the addition of urea diminishes net protein attractions, while the introduction of salt enhances them, resulting in respective shifts of the state boundaries. Moreover, the protein–protein interactions can be effectively characterized by a Derjaguin–Landau–Verwey–Overbeek (DLVO) potential. The impact of urea on these interactions can thus be explained entirely by alterations in the dielectric properties of the solution.","PeriodicalId":103,"journal":{"name":"Soft Matter","volume":" 10","pages":" 1937-1948"},"PeriodicalIF":2.9,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/sm/d4sm01392a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Escape from the predator-induced flow: smart prey strategies with steering and swimming actions

IF 2.9 3区化学

Soft Matter Pub Date : 2025-02-13 DOI: 10.1039/D4SM01399A

Bocheng Li, Jingran Qiu and Lihao Zhao

{"title":"Escape from the predator-induced flow: smart prey strategies with steering and swimming actions","authors":"Bocheng Li, Jingran Qiu and Lihao Zhao","doi":"10.1039/D4SM01399A","DOIUrl":"10.1039/D4SM01399A","url":null,"abstract":"Plankton can sense fluid signals generated by predators and escape from them. This study explores the escape strategies using reinforcement learning (RL). The predator, modeled as a squirmer, generates flows to capture the prey entering its ciliary band. The squirmer mode characterizes the generated flow, and the higher mode corresponds to more and smaller-scale vortices. The motions of prey swimmers in the squirmer-induced flow are obtained using a Lagrangian point-particle approach. To understand the effects of different prey actions, we examine strategies obtained via Q-learning in three cases, i.e. the swimmers can only steer, only change swimming speeds, or take both actions, respectively. We compose the forth strategy where swimmers determine steering and swimming speeds separately according to the steering-only and swimming-only strategies. We find that the four strategies are all effective in the escape task. The steering-only strategy outperforms the swimming-only strategy, and strategies with both actions surpass those with only one action. The composed strategy surpasses the steering & swimming one in the training flow field. Furthermore, the robustness of strategies to swimmer shapes and flow modes is examined. All strategies are robust against various swimmer elongations. The steering-only strategy is robust in high-mode flows, whereas the swimming-only strategy is robust in low-mode flows. The steering & swimming strategy is robust for all modes, while the composed one is not robust in high-mode flows. This study investigates the possible strategies for plankton to escape from predators, revealing the effectiveness of RL in agent navigation in fluid flows.","PeriodicalId":103,"journal":{"name":"Soft Matter","volume":" 13","pages":" 2413-2421"},"PeriodicalIF":2.9,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143490183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stereoisomerism-dependent gelation and crystal structures of glycosylated N-methylbromomaleimide-based supramolecular hydrogels†

IF 2.9 3区化学

Soft Matter Pub Date : 2025-02-12 DOI: 10.1039/D4SM01325E

Kotoyo Yamashita, Akitaka Ito, Masashi Ishida, Yuki Shintani, Masato Ikeda, Shingo Hadano, Masayuki Izumi and Rika Ochi

引用次数: 0

Hydrogen-bond disruption in molecularly engineered Janus evaporators for enhanced solar desalination†

IF 2.9 3区化学

Soft Matter Pub Date : 2025-02-12 DOI: 10.1039/D4SM01484G

Jie Zhu, Dong Wu, Xiayun Huang, Daoyong Chen and Zhihong Nie

{"title":"Hydrogen-bond disruption in molecularly engineered Janus evaporators for enhanced solar desalination†","authors":"Jie Zhu, Dong Wu, Xiayun Huang, Daoyong Chen and Zhihong Nie","doi":"10.1039/D4SM01484G","DOIUrl":"10.1039/D4SM01484G","url":null,"abstract":"Hydrogels have emerged as effective evaporator platforms, significantly enhancing evaporation rates by disrupting water's hydrogen bond network. Here, we present an advanced strategy to improve hydrogel evaporation performance by tailoring alkyl hydrophobic groups within biparental polyelectrolyte-shell micelles grafted onto the polyvinyl alcohol (PVA) hydrogel surface. Poly(2-(diethylamino)ethyl methacrylate) (PDEAEMA) quaternized with methyl iodide (MeI) or ethyl iodide (EtI) formed the biparental polyelectrolyte shell, while poly(benzyl methacrylate) (PBzMA) constituted the micelle core, creating BE-MeI and BE-EtI micelles, respectively. The molecularly engineered BE-MeI micelles exhibited an optimized configuration of quaternary amines linked to hydrophobic groups, achieving a synergistic balance between water attraction via electrostatic interactions and water repulsion via steric hindrance. This configuration effectively disrupted the water's hydrogen bond network, lowering the water evaporation enthalpy to 1434 J g−1. The BE-MeI micelle-grafted PVA hydrogel achieved a record-breaking evaporation rate of 4.1 kg m−2 h−1 under 1 sun irradiation, surpassing prior benchmarks, including our previously reported poly(4-vinyl pyridine) quaternized by a MeI system. Additionally, the grafted micelle layer exhibited a salt rejection ratio of 99.62%, ensuring excellent desalination performance. The biparental polyelectrolyte-shell micelle grafting strategy is broadly applicable across diverse hydrogel systems, representing a significant advancement in solar-driven desalination technology.","PeriodicalId":103,"journal":{"name":"Soft Matter","volume":" 11","pages":" 2114-2123"},"PeriodicalIF":2.9,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143456489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Large modulation of the bottlebrush diblock copolymer morphology and structural color through solvent selectivity†

IF 2.9 3区化学

Soft Matter Pub Date : 2025-02-11 DOI: 10.1039/D4SM01495B

Sanghyun Jeon, Yash Kamble, Zhuang Xu, Azzaya Khasbaatar, Changhyun Hwang, Jong-Hoon Lee, Jiachun Shi, Simon A. Rogers, Damien Guironnet and Ying Diao

{"title":"Large modulation of the bottlebrush diblock copolymer morphology and structural color through solvent selectivity†","authors":"Sanghyun Jeon, Yash Kamble, Zhuang Xu, Azzaya Khasbaatar, Changhyun Hwang, Jong-Hoon Lee, Jiachun Shi, Simon A. Rogers, Damien Guironnet and Ying Diao","doi":"10.1039/D4SM01495B","DOIUrl":"10.1039/D4SM01495B","url":null,"abstract":"Bottlebrush block copolymers (BBCPs), characterized by densely grafted side chains along their backbone, have emerged as promising materials for structural color applications. Their unique architecture prevents entanglement and facilitates rapid assembly kinetics, enabling the formation of various photonic crystals with high tunability of structural color from the visible to the infrared range. However, accessing non-1D structures has been largely limited to synthetic approaches. In this paper, we report large modulation of a microphase separated morphology of the polystyrene-b-polylactide (PS-b-PLA) BBCP using a single material by exploiting selective solubility of the two blocks in a series of structurally similar solvents. Combining optical spectroscopy, electron microscopy, photoinduced force microscopy and X-ray scattering, we unveil the microstructural evolution as dependent on solvent selectivity. Furthermore, we uncovered the mechanisms underlying the differences in assembly, where highly selective solvents induce sidechain aggregation, altering the volume fraction and facilitating the formation of non-1D structures.","PeriodicalId":103,"journal":{"name":"Soft Matter","volume":" 12","pages":" 2217-2229"},"PeriodicalIF":2.9,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/sm/d4sm01495b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143466497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0