Communications in Physics最新文献

The transformation of ferromagnetic properties of Fe3O4 into ferromagnetic properties of α-Fe2O3 by the polyol process, heat treatment, isothermally annealing and sintering 通过多元醇工艺、热处理、等温退火和烧结将 Fe3O4 的铁磁性转变为 α-Fe2O3 的铁磁性

Communications in Physics Pub Date : 2024-07-15 DOI: 10.15625/0868-3166/20630

Nguyen Viet Long, Thi Nhat Hang Nguyen, Hong Phuc Le, Van Cuu Ho, Huu Tri Nguyen

引用次数: 0

Size dependence of melting process of armchair hexagonal boron nitride nanoribbon 扶手六方氮化硼纳米带熔化过程的尺寸依赖性

Communications in Physics Pub Date : 2024-06-11 DOI: 10.15625/0868-3166/19484

H. T. T. Nguyen, Van Luong Tran, T. T. Ngo

{"title":"Size dependence of melting process of armchair hexagonal boron nitride nanoribbon","authors":"H. T. T. Nguyen, Van Luong Tran, T. T. Ngo","doi":"10.15625/0868-3166/19484","DOIUrl":"https://doi.org/10.15625/0868-3166/19484","url":null,"abstract":"The dependence on the initial configuration size of armchair hexagonal boron nitride nanoribbon (h-BNNR) is investigated by molecular dynamics simulation. The initial configuration size of armchair h-BNNR containing 10000, 20000, and 30000 identical atoms of B and N is heated from 50 K to 6000 K via Tersoff potentials to study the dependence on the initial configuration size of the phase transition from crystal to liquid of armchair h-BNNR. Some results can be listed: the phase transition exhibits a first-order type; the phase transition from crystal to liquid states depends on the initial configuration size; the melting points of 10000, 20000, and 30000 atoms are 3640 K, 4000 K, and 4400 K, respectively; the dependence on the heating rate of the armchair h-BNNR is considered for the case of 20000 atoms; in this study range, the melting point decreases as the heating rate decreases; the atomic mechanism of melting process is studied by analyzing the parameter and the appearance of the liquid-like atoms based on the critical value ; the critical value is used to classify solid-like and liquid-like atoms; the appearance of liquid-like atoms upon heating starts from the edges and grow inward; at the phase transition temperature, almost the entire crystal structure of the armchair h-BNNR configuration collapses.","PeriodicalId":504426,"journal":{"name":"Communications in Physics","volume":"4 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141357005","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

Dirac CP violation phase in the neutrino sector with A4 flavour symmetry 具有A4风味对称性的中微子扇区中的狄拉克CP违反相位

Communications in Physics Pub Date : 2024-06-11 DOI: 10.15625/0868-3166/20171

Quang Van Phi, Anh Ky Nguyen, Tien Manh Tran

引用次数: 0

Scotogenic gauge mechanism for neutrino mass and dark matter 中微子质量和暗物质的斯考根轨距机制

Communications in Physics Pub Date : 2024-06-11 DOI: 10.15625/0868-3166/20209

Van Dong Phung, Thao Nguyen Huy

引用次数: 0

Structural prediction of carbon cluster isomers with machine-learning potential 利用机器学习潜力预测碳簇异构体的结构

Communications in Physics Pub Date : 2024-06-11 DOI: 10.15625/0868-3166/20609

Duy Huy Nguyen

引用次数: 0

Comparing receptor binding properties of SARS-CoV-2 and of SARS-CoV virus by using unsupervised machine learning models 利用无监督机器学习模型比较 SARS-CoV-2 和 SARS-CoV 病毒的受体结合特性

Communications in Physics Pub Date : 2024-06-11 DOI: 10.15625/0868-3166/19607

T. T. Nguyen, D. Nguyen-Manh, Ly Nguyen Hai, Cao Cong Phuong, Hien Lai Thi Thu, Anh Phan Duc, Cuong Nguyen Tien, Agata Kranjc

{"title":"Comparing receptor binding properties of SARS-CoV-2 and of SARS-CoV virus by using unsupervised machine learning models","authors":"T. T. Nguyen, D. Nguyen-Manh, Ly Nguyen Hai, Cao Cong Phuong, Hien Lai Thi Thu, Anh Phan Duc, Cuong Nguyen Tien, Agata Kranjc","doi":"10.15625/0868-3166/19607","DOIUrl":"https://doi.org/10.15625/0868-3166/19607","url":null,"abstract":"This work continues our recent molecular dynamics investigation of the three systems of the human ACE2 receptor interacting with the viral RBDs of SARS-CoV virus and two variants of SARS-CoV-2 viruses. The simulations are extended and analyzed using unsupervised machine learning models to give complementary descriptions of hidden features of the viral binding mechanism. Specifically, the principal component analysis (PCA) and the variational autoencoder (VAE) models are employed, both are classified as dimensionality reduction approaches with different focuses. The results support the molecular dynamics results that the two variants of SARS-CoV-2 bind stronger and more stable to the human ACE2 receptor than SARS-CoV virus does. Moreover, stronger bindings also affect the structure of the human receptor, making it fluctuate more, a sensitive feature which is hard to detect using standard analyses. Unexpectedly, it is found that the VAE model can learn and arrange randomly shuffled protein structures obtained from molecular dynamics in time order in the latent space representation. This result potentially has promising application in computational biomolecules. One could use this VAE model to jump forward in time during a molecular dynamics simulation, and to enhance the sampling of protein configuration space.","PeriodicalId":504426,"journal":{"name":"Communications in Physics","volume":"61 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141358326","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

Effect of time-dependent inter-particle interaction on the dynamics of a dissipative double-well Bose-Einstein condensate 随时间变化的粒子间相互作用对耗散双阱玻色-爱因斯坦凝聚态动力学的影响

Communications in Physics Pub Date : 2024-06-07 DOI: 10.15625/0868-3166/19703

K. Rajagopal, Ruqi Zhang

引用次数: 0

Research on the characteristics properties in photonic crystal fibers infiltrated with heavy water for supercontinuum generation application 超连续发生应用中浸润重水的光子晶体光纤特性研究

Communications in Physics Pub Date : 2024-06-07 DOI: 10.15625/0868-3166/20075

T. Dang Van, B. T. Le Tran, L. Chu van

引用次数: 0

Fabrication of uniform microlasers using conventional printing technology 利用传统印刷技术制造均匀微激光器

Communications in Physics Pub Date : 2024-05-18 DOI: 10.15625/0868-3166/20185

D. Ta, Thuong Hoang, Duy Nguyen, Hoang Nguyen, Toan Nguyen

引用次数: 0

Highly sensitive refractive index sensing based on nanostructured porous silicon interferometers 基于纳米结构多孔硅干涉仪的高灵敏折射率传感技术

Communications in Physics Pub Date : 2024-04-23 DOI: 10.15625/0868-3166/19163

Nguyen Thuy Van, Pham Thanh Son, Pham Thanh Binh, Vu Duc Chinh, Hoang Thi Hong Cam, Do Thuy Chi, Nguyen Anh Tuan, B. Huy, Pham van Hoi

{"title":"Highly sensitive refractive index sensing based on nanostructured porous silicon interferometers","authors":"Nguyen Thuy Van, Pham Thanh Son, Pham Thanh Binh, Vu Duc Chinh, Hoang Thi Hong Cam, Do Thuy Chi, Nguyen Anh Tuan, B. Huy, Pham van Hoi","doi":"10.15625/0868-3166/19163","DOIUrl":"https://doi.org/10.15625/0868-3166/19163","url":null,"abstract":"In this study, we present the experimental evidence demonstrating the utility of electrical double layer (EDL)-induced ion accumulation, using sodium (Na+) ion in water as model substances, on a negatively charged nanostructured surface, specifically thermally grown silicon dioxide (SiO2). This novel approach, termed Ion Surface Accumulation (ISA), aims to enhance the performance of nanostructured porous silicon (PSi) interferometers in optical refractometric applications. The experimental results show that the electrical double layer-induced ion surface accumulation (EDL-ISA) on oxidized PSi interferometers enables remarkable amplification of the interferometer output signal (the spectral interferogram), even when the bulk refractive index variation is below 10-3 RIU. This substantial signal enhancement translates into an increase in sensitivity of up to two orders of magnitude, facilitating the reliable measurement of refractive index variations with both a detection limit (DL) and resolution (R) as low as 10-4 RIU. This achievement elevates the performance of PSi interferometers in photonics and plasmonics-based refractive index platforms.","PeriodicalId":504426,"journal":{"name":"Communications in Physics","volume":"15 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140671748","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