Communications in Physics最新文献_第8页

Entropy Scaling for Viscosity of Pure Lennard-Jones Fluids and Their Binary Mixtures 纯Lennard-Jones流体及其二元混合物粘度的熵标度

Communications in Physics Pub Date : 2022-03-27 DOI: 10.15625/0868-3166/16345

The-Cang Nguyen, Samy Khennache, G. Galliéro, Tuong Tran, Luc Tuong, Phuc Nguyen, H. Hoang, Hieu Khac Ho

{"title":"Entropy Scaling for Viscosity of Pure Lennard-Jones Fluids and Their Binary Mixtures","authors":"The-Cang Nguyen, Samy Khennache, G. Galliéro, Tuong Tran, Luc Tuong, Phuc Nguyen, H. Hoang, Hieu Khac Ho","doi":"10.15625/0868-3166/16345","DOIUrl":"https://doi.org/10.15625/0868-3166/16345","url":null,"abstract":"In this work, entropy scaling approaches for viscosity of pure Lennard-Jones (LJ) fluids and their mixtures have been investigated. To do so, we have employed reliable viscosity database available in literature for the pure LJ fluids, and performed the molecular dynamics simulation to generate viscosity database over a wide range of thermodynamic condition for the LJ mixture fluids. It has shown that for the pure LJ fluid, the entropy scaling approaches using the macroscopic properties for the reduction of viscosity yield noticeably better collapse of data than the one using the zero-density viscosity in the dense fluid region. In addition, we have developed viscosity correlations based on these approaches. It has been obtained that the correlations of macroscopic properties approaches predict the pure LJ fluid viscosity with average absolute deviation of around 4% more coming from the low-density states, whereas it is of around 8.50% more coming from the dense states for the other one. Finally, the viscosity correlations have been applied to the LJ mixtures. Interestingly, the correlations of macroscopic properties approaches are able to provide good estimations for all mixtures studied. However, it deteriorates for the viscosity of dense mixtures when the other employed.","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"109 1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72984118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Effect of Cu(^{2+}) Dopant on the Formation of Zinc Oxide Microrod Fabricated by a Hydrothermal Method Cu (^{2+})掺杂剂对水热法制备氧化锌微棒形成的影响

Communications in Physics Pub Date : 2022-03-27 DOI: 10.15625/0868-3166/15921

S. Nguyen, Phuoc Sang Le, T. Luu

{"title":"Effect of Cu(^{2+}) Dopant on the Formation of Zinc Oxide Microrod Fabricated by a Hydrothermal Method","authors":"S. Nguyen, Phuoc Sang Le, T. Luu","doi":"10.15625/0868-3166/15921","DOIUrl":"https://doi.org/10.15625/0868-3166/15921","url":null,"abstract":"Reconstruction and stabilization of polar oxide surfaces, such as ZnO, contribute a significant role in photocatalysis, chemical sensing, and optoelectronic applications, however their physical chemistry insight is still a puzzle in the surface science. In this work, the polar surface instability induced the morphological evolution of hydrothermally synthesized micro-rod ZnO doped with various contents of Cu2+ ion (1-10 at.%) was investigated. The transformation of micro-rod morphology from the high aspect ratio flower-like shape of the pure ZnO to the hexagonal prism-like shape of the doped ZnO was characterized by X-ray diffractometry, scanning electron microscopy and micro Raman spectroscopy. The chemically active Zn-terminated polar surface in doped samples was less positive charge density which was the main reason to cancel the electrostatic instability for the dominant growing direction. Furthermore, the schematic models of the electron transferring from the conduction band region to the electron trap centre of Cu2+, and the Zn-terminated polar surface reconstruction were proposed for the morphological evolution mechanism.","PeriodicalId":10571,"journal":{"name":"Communications in Physics","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78603678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Higher-order nonclassicality in superposition of three-mode photon-added trio coherent state 三模光子加三相干态叠加中的高阶非经典性

Communications in Physics Pub Date : 2022-03-27 DOI: 10.15625/0868-3166/16508

Q. D. Tran, Sy Chuong Ho, Van Hung Dao, T. M. Duc

引用次数: 0

Mn(_{55-x})Co(_x)Bi(_{45}) Melt Spun Ribbons: Microstructures and Magnetic Properties Mn (_{55-x}) Co (_x) Bi (_{45})熔融纺丝带:微观结构和磁性能

Communications in Physics Pub Date : 2022-03-27 DOI: 10.15625/0868-3166/16597

T. Nguyen, Anh Kha Vuong, Ngan Thien Thi Dang, Nam Nguyen, N. H. Pham, Quynh Van Nguyen, Tuan Van Dinh, V. V. Nguyen

引用次数: 0

Gauge Origin of Double Dark Parity and Implication for Dark Matter 双暗宇称的规范起源及其对暗物质的启示

Communications in Physics Pub Date : 2021-10-04 DOI: 10.15625/0868-3166/16784

D. V. Loi, P. V. Dong