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http://dx.doi.org/10.1103/physrevd.42.45 | DOI Listing |
Int J Mol Sci
November 2024
School of Physics, Hangzhou Normal University, Hangzhou 311121, China.
Enzyme-powered nanomotors have attracted significant attention in materials science and biomedicine for their biocompatibility, versatility, and the use of biofuels in biological environments. Here, we employ a hybrid mesoscale method combining molecular dynamics and multi-particle collision dynamics (MD-MPC) to study the dynamics of nanomotors powered by enzyme reactions. Two cascade enzymes are constructed to be layered on the same surface of a Janus colloid, providing a confined space that greatly enhances reaction efficiency.
View Article and Find Full Text PDFNano Lett
September 2024
Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
Highly efficient anti-Stokes (AS) photoluminescence (PL) is observed from halide perovskite quantum dots (QDs) due to their strong electron-phonon interactions. The AS PL is particularly intriguing, as it suggests the potential for semiconductor optical cooling if the external quantum efficiency approaches 100%. However, the PL quantum efficiency in QDs is primarily dominated by multiparticle nonradiative Auger recombination processes under intense photoexcitation, which impose limits on the optical cooling gain.
View Article and Find Full Text PDFACS Nano
July 2024
Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Shenzhen 518107, China.
J Chem Phys
May 2024
Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
The multiparticle collision dynamics (MPCD) simulation method is an attractive technique for studying the effects of hydrodynamic interactions in colloidal suspensions because of its flexibility, computational efficiency, and ease of implementation. Here, we analyze an extension of the basic MPCD method in which colloidal particles are discretized with a surface mesh of sensor nodes/particles that interact with solvent particles (MPCD + Discrete Particle or MPCD + DP). We use several situations that have been described analytically to probe the impact of colloidal particle mesh resolution on the ability of the MPCD + DP method to resolve short-ranged hydrodynamic interactions, which are important in crowded suspensions and especially in self-assembling systems that create high volume fraction phases.
View Article and Find Full Text PDFMaterials (Basel)
April 2024
Department of Automotive Engineering, Keimyung University, Daegu 42601, Republic of Korea.
Recently, researchers have focused on improving motor performance and efficiency. To manufacture motors with performance and efficiency higher than those of motors manufactured through the additive process, compressibility verification through the parameter control of soft magnetic composites (SMCs) is essential. To this end, this study aims to select suitable powders for manufacturing high-performance, high-efficiency motors by exploring powder mixing ratios and milling times.
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