Geometric control of motility-induced phase separation

该论文通过研究活性布朗粒子在环面上的运动,揭示了即使微弱且缓慢变化的曲率也能通过改变环面纵横比,将运动诱导相分离(MIPS)的致密相从外赤道处的圆盘状结构调控为环绕小圆周的带状结构,从而证明弯曲几何不仅是调控非平衡动力学的有力工具,也是探究活性物质基本机制的独特敏感平台。

Toler H. Webb, Helen S. Ansell, Daniel M. SussmanThu, 12 Ma🔬 cond-mat

All-water supercapacitor enabled by 1-nm clay channels

该研究利用天然丰富的层状粘土和导电石墨烯构建了一维纳米通道,使受限水作为唯一电解质,成功开发出一款工作电压达 1.6 V、循环寿命超过 6 万次的可持续全水基超级电容器。

Vasily Artemov, Svetlana Babiy, Yunfei Teng, Jiaming Ma, Alexander Ryzhov, Tzu-Heng Chen, Lucie Navratilova, Victor Boureau, Pascal Schouwink, Mariia Liseanskaia, Patrick Huber, Fikile Brushett, Lyesse Laloui, Giulia Tagliabue, Aleksandra RadenovicMon, 09 Ma🔬 cond-mat

Chaos-generating periodic orbits of topological defects in confined active nematics

该研究通过数值模拟发现,在受限二维活性向列相中,当缺陷成对产生被抑制但流动未被完全抑制时,特定数量的+1/2+1/2拓扑缺陷(如3个或4个)会形成稳定的周期性轨道(如“金辫”和“银辫”),其动力学行为(有序或混沌)由缺陷数量与流场涡旋数量之间的平衡所决定。

Brandon Klein, Alejandro J. Soto Franco, Md Mainul Hasan Sabbir, Matthew J. Deutsch, Ross Kliegman, Robin L. B. Selinger, Kevin A. Mitchell, Daniel A. BellerMon, 09 Ma🔬 cond-mat

Shape-Independent Fluidization in Epithelial Cell Monolayers

该研究挑战了上皮细胞层流体化仅由细胞几何形状决定的传统观点,发现降低细胞间黏附可在不改变细胞形状的情况下显著增加组织流动性,从而揭示了黏附在热力学能量和动力学摩擦中的双重作用,并提出了修正的理论模型以完善对上皮流体性的理解。

Pradip K. Bera (Department of Mechanical Engineering, University of Wisconsin - Madison, Madison, WI, USA), Anh Q. Nguyen (Department of Physics, Northeastern University, Boston, MA, USA, Center for Theoretical Biological Physics, Northeastern University, Boston, MA, USA), Molly McCord (Department of Mechanical Engineering, University of Wisconsin - Madison, Madison, WI, USA, Biophysics Program, University of Wisconsin - Madison, Madison, WI, USA), Dapeng Bi (Department of Physics, Northeastern University, Boston, MA, USA, Center for Theoretical Biological Physics, Northeastern University, Boston, MA, USA), Jacob Notbohm (Department of Mechanical Engineering, University of Wisconsin - Madison, Madison, WI, USA, Biophysics Program, University of Wisconsin - Madison, Madison, WI, USA)Mon, 09 Ma🔬 physics

Absolute negative mobility in a one-dimensional overdamped system driven by active fluctuations

该研究通过引入白泊松散粒噪声形式的主动涨落,证明了在平衡态下由分段线性对称周期势约束的一维过阻尼系统中也能出现绝对负迁移现象,从而显著降低了实现该反常输运效应的系统复杂度,并为理解生物细胞内的奇异输运行为及开发微观分离策略提供了新视角。

K. Białas, P. Hänggi, J. SpiechowiczMon, 09 Ma🔬 cond-mat.mes-hall

Confined drying of a binary liquid mixture droplet: A quantitative interferometric study under humidity control

该研究结合马赫 - 曾德尔干涉仪与湿度控制腔室,通过高精度定量测量水 - 甘油二元液滴在受限几何结构下的干燥动力学与内部浓度场,验证了蒸汽扩散控制蒸发耦合内部扩散模型的准确性,并成功提取了宽浓度范围内的互扩散系数与水化学活度。

Ole Milark, Jean-Baptiste Salmon, Benjamin SobacMon, 09 Ma🔬 physics