Revista Mexicana De Fisica最新文献_第7页

Radial solution of Schrödinger equation with Hulthen-Yukawa-Inverse quadratic potential in a Point-Like defect under AB-flux field ab -磁通场下点状缺陷中huln - yukawa逆二次势Schrödinger方程的径向解

IF 1.7 4区物理与天体物理

Revista Mexicana De Fisica Pub Date : 2023-05-01 DOI: 10.31349/revmexfis.69.030401

F. Ahmed

引用次数: 0

Star shape interferometer with reduced vibration sensitivity 降低振动灵敏度的星形干涉仪

IF 1.7 4区物理与天体物理

Revista Mexicana De Fisica Pub Date : 2023-05-01 DOI: 10.31349/revmexfis.69.031302

Juan De la Rosa, E. Gomez, V. M. Valenzuela

引用次数: 0

B − L model with D5 × Z4 symmetry for lepton mass hierarchy and mixing 轻子质量层次和混合的D5 × Z4对称B−L模型

IF 1.7 4区物理与天体物理

Revista Mexicana De Fisica Pub Date : 2023-05-01 DOI: 10.31349/revmexfis.69.030803

Vien Vo Van

引用次数: 0

Physical properties of spray pyrolysed ZnO thin films obtained from nitrate, acetate and chloride precursors: Comparative study for Solar Cell Applications 硝酸盐、乙酸盐和氯化物前驱体喷雾热解ZnO薄膜的物理性能：太阳能电池应用的比较研究

IF 1.7 4区物理与天体物理

Revista Mexicana De Fisica Pub Date : 2023-05-01 DOI: 10.31349/revmexfis.69.031002

K. Salim, W. Azzaoui

引用次数: 0

Electronic structure and imaginary dielectric function for 2D GaAs doped with Si amphoteric impurities: A DFT study 掺杂Si两性杂质的二维GaAs的电子结构和虚介电函数的DFT研究

IF 1.7 4区物理与天体物理

Revista Mexicana De Fisica Pub Date : 2023-05-01 DOI: 10.31349/revmexfis.69.031605

G. J. González-Loera, Karla Arely Rodríguez Magdaleno, F. Nava-Maldonado, J. C. Martínez-Orozco

{"title":"Electronic structure and imaginary dielectric function for 2D GaAs doped with Si amphoteric impurities: A DFT study","authors":"G. J. González-Loera, Karla Arely Rodríguez Magdaleno, F. Nava-Maldonado, J. C. Martínez-Orozco","doi":"10.31349/revmexfis.69.031605","DOIUrl":"https://doi.org/10.31349/revmexfis.69.031605","url":null,"abstract":"Without a doubt, the impact of the discovery of 2D systems such as graphene has led to both theoretical and experimental investigations of a large number of materials such as Silicene, Borene, Arsenene, Phosphorene, just to mention some of the most emblematic ones, but other materials and its heterostructures are also of interest. From this point of view, in this work we present the band structure, density of states as well as the imaginary part of the dielectric function of a 2D GaAs system, by means of a density functional theory implementation. The aim of this study is to investigate the basic physical properties for a freestanding 2D GaAs sheet, as well as the effect of Si substitutional atoms, since it has an amphoteric nature in the GaAs, which means that depending on which atom is substituted, this can be an n- or p-type impurity atom. We report, as expected, that the levels do indeed appear near the conduction band (or valence) if the impurity is n-type (or p-type), respectively. Also the density of states due to the impurity is modified as well as the imaginary part of the dielectric function","PeriodicalId":21538,"journal":{"name":"Revista Mexicana De Fisica","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49478873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of factors that affect radiation dose level during interventional cardiology procedures using logistic regression 应用logistic回归分析介入心脏病学过程中影响辐射剂量水平的因素

IF 1.7 4区物理与天体物理

Revista Mexicana De Fisica Pub Date : 2023-05-01 DOI: 10.31349/revmexfis.69.031101

E. Harki, Zhala S. Rashid

{"title":"Analysis of factors that affect radiation dose level during interventional cardiology procedures using logistic regression","authors":"E. Harki, Zhala S. Rashid","doi":"10.31349/revmexfis.69.031101","DOIUrl":"https://doi.org/10.31349/revmexfis.69.031101","url":null,"abstract":"Interventional cardiology procedures (ICP) are considered some of the main medical procedures in which patients are exposed to high doses of radiation. The aim of this study was to examine how to control the level of radiation exposure and to analyse and study the factors affecting the increase in radiation exposure from the specified level using a regression method. The results model correctly predicted that in 80.0%, 90.5%, and 95.2% of the cases, there were routine dose area product (DAP) levels, and in 64.3%, 33.3%, and 77.8% of cases, there were high levels of DAP, giving an overall percentage, correct prediction rate of 72.45%, 73.35%, and 90.0%, for coronary angiography (CA), percutaneous coronary intervention (PCI), and combined CA with PCI (CA/PCI), respectively. All the factors studied in this research, namely Kv, mA, Fluoroscopy Time (FT) and Body Mass Index (BMI), have a significant relationship with the DAP level. We concluded that regression analysis is a reliable method for evaluating the user protocol in a center or hospital and identifying variables that have an effect on the dose area product level in interventional cardiology.","PeriodicalId":21538,"journal":{"name":"Revista Mexicana De Fisica","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45587824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optical and structural properties of graphene oxide-incorporated polyvinylpyrrolidone/copper ternary nanocomposites (PVP/Cu/GO) films 氧化石墨烯掺入聚乙烯吡咯烷酮/铜三元纳米复合材料（PVP/Cu/GO）薄膜的光学和结构性能

IF 1.7 4区物理与天体物理

Revista Mexicana De Fisica Pub Date : 2023-05-01 DOI: 10.31349/revmexfis.69.031001

Augustine U. Agobi, A. Ikeuba, A. Ekpunobi, I. Ikhioya, Kuffre Imoh Udofia, J. E. Ntibi, C. N. Ozoemena, M. Abua

{"title":"Optical and structural properties of graphene oxide-incorporated polyvinylpyrrolidone/copper ternary nanocomposites (PVP/Cu/GO) films","authors":"Augustine U. Agobi, A. Ikeuba, A. Ekpunobi, I. Ikhioya, Kuffre Imoh Udofia, J. E. Ntibi, C. N. Ozoemena, M. Abua","doi":"10.31349/revmexfis.69.031001","DOIUrl":"https://doi.org/10.31349/revmexfis.69.031001","url":null,"abstract":"Novel ternary nanocomposite films based on polyvinylpyrrolidone copper nanoparticles graphene oxide (PVP/Cu/GO) were prepared using electrochemical deposition technique on Fluorine doped tin oxide (FTO) substrate. This facile and effective approach has been proven to be very useful for the fabrication of inexpensive, high-performance electrochemical devices. To achieve uniform deposition of the nanocomposite films, the three components of the nanocomposites were mixed under controlled conditions. The impact of different GO loading on the PVP/Cu/GO composites was measured using UV–visible spectroscopy, X-Ray Diffraction (XRD) spectroscopy, SEM, EDX, and four-point probe techniques to evaluate their optical, structural, morphological, compositional, and electrical properties, respectively. UV-visible analysis shows that the optical band gap (Eg) of the nanocomposite decreased from 3.51 to 2.02 eV with increasing GO loading. All of the nanocomposites showed UV absorbance of ≈450 nm. According to the XRD results, the GO materials were very well dispersed in the PVP/Cu/GO composites, while also revealing the crystalline nature of the nanocomposites. The SEM results revealed spherical-shaped grains of the deposited films, while the EDX results revealed the major elements deposited. Four-point probe analysis of the nanocomposites revealed slight increase in conductivity with low GO content, thus confirming the semiconducting properties of the nanocomposites with the GO content. The obtained results herein shows that the PVP/Cu/GO nanocomposites are successfully synthesized with attractive physiochemical properties suitable for the fabrication of organic electronic devices and photovoltaic devices.","PeriodicalId":21538,"journal":{"name":"Revista Mexicana De Fisica","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48668032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surface plasmon resonance based on graphene-metal-graphene structure: recurrence relation theory 基于石墨烯-金属-石墨烯结构的表面等离子体共振：递推关系理论

IF 1.7 4区物理与天体物理

Revista Mexicana De Fisica Pub Date : 2023-05-01 DOI: 10.31349/revmexfis.69.031603

G. González de la Cruz

{"title":"Surface plasmon resonance based on graphene-metal-graphene structure: recurrence relation theory","authors":"G. González de la Cruz","doi":"10.31349/revmexfis.69.031603","DOIUrl":"https://doi.org/10.31349/revmexfis.69.031603","url":null,"abstract":"The last years, graphene has opened exciting new fields in graphene plasmonics, due to the graphene’s unique optoelectronic properties such as long-lived collective excitation, extreme optical confinement in graphene plasmonics and extraordinary light-matter interactions in metamaterials. Therefore, these excellent properties make graphene a favorable candidate for novel plasmonic devices and potential applications in photonics, optoelectronics and sensor technologies. In this work, theoretical investigations are carried out to in Graphene-Metal-Graphene structure for enhanced surface plasmon resonance based on the recurrence relations’ method. We find that the graphene-metal-graphene structure supports both high-energy optical plasmon oscillations and out-of-phase low energy acoustic charge density excitations. Since a high performance of surface plasmon resonance excitations should exhibit a large depth of dip (small reflectivity), the minimum of reflectivity in the hybrid structure can be manipulated dynamically by changing the thickness of the metallic film, the number of the graphene layers and the dielectric proprieties of the surrounding dielectric materials. Based on this principle, different kinds of plasmonic sensors have been designed in previous years.","PeriodicalId":21538,"journal":{"name":"Revista Mexicana De Fisica","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48329601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Theoretical study of [111]-germanium nanowires as anode materials in rechargeable batteries: a density functional theory approach [111]-锗纳米线作为可充电电池负极材料的理论研究：密度泛函理论方法

IF 1.7 4区物理与天体物理

Revista Mexicana De Fisica Pub Date : 2023-05-01 DOI: 10.31349/revmexfis.69.031604

Ricardo Jiménez-Sánchez, Pedro Morales-Vergara, F. Salazar, Á. Miranda, A. Trejo, I. J. Hernández-Hernández, L. A. Pérez, M. Cruz‐Irisson

{"title":"Theoretical study of [111]-germanium nanowires as anode materials in rechargeable batteries: a density functional theory approach","authors":"Ricardo Jiménez-Sánchez, Pedro Morales-Vergara, F. Salazar, Á. Miranda, A. Trejo, I. J. Hernández-Hernández, L. A. Pérez, M. Cruz‐Irisson","doi":"10.31349/revmexfis.69.031604","DOIUrl":"https://doi.org/10.31349/revmexfis.69.031604","url":null,"abstract":"In this work, we present a Density Functional Theory (DFT) study of hydrogen-passivated germanium nanowires grown along the [111] crystallographic direction. The study is performed within the local density approximation (LDA) and the supercell technique. Four different diameters of nanowires were considered and the surface hydrogen atoms were replaced by Li ones using a sequential process. The results indicate that the nanowires have a semiconductor behaviour and the energy band gap diminishes when the number of Li atoms per unit cell increases. The formation energy results reveal that the Li atoms increase the stability of the Ge nanowires, and there is a charge transfer from the Li atoms to the surface Ge atoms. The open circuit voltage values are almost independent of the concentration of Li atoms. On the other hand, the lithium storage capacity results reveal that the Ge nanowires could be good candidates to be incorporated as anodic materials in the new generation of rechargeable batteries.","PeriodicalId":21538,"journal":{"name":"Revista Mexicana De Fisica","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49585168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A comparison of viscoelastic behavior of engineering elastomers under different stress and temperature 工程弹性体在不同应力和温度下的粘弹性行为比较

IF 1.7 4区物理与天体物理

Revista Mexicana De Fisica Pub Date : 2023-05-01 DOI: 10.31349/revmexfis.69.031005

Jocelyn Arlet Juárez Hernández, J. A. Sotomayor-del-Moral, O. Susarrey-Huerta, L. Farfán-Cabrera, J. B. Pascual-Francisco

{"title":"A comparison of viscoelastic behavior of engineering elastomers under different stress and temperature","authors":"Jocelyn Arlet Juárez Hernández, J. A. Sotomayor-del-Moral, O. Susarrey-Huerta, L. Farfán-Cabrera, J. B. Pascual-Francisco","doi":"10.31349/revmexfis.69.031005","DOIUrl":"https://doi.org/10.31349/revmexfis.69.031005","url":null,"abstract":"In this work, a comparison of the viscoelastic creep behavior of five engineering elastomers (Ethylene-Propylene-Diene Monomer, Flouroelastomer, nitrile butadiene rubber, silicon rubber and neoprene/chloroprene rubber) is presented. Creep tests at different stress levels and temperatures were conducted using a “home-built” creep test device. A commercial equipment of Digital Image Correlation technique was implemented for the measurement of the time-dependent strains. The linear viscoelastic behavior regimes were determined by evaluating the creep compliance for each stress and temperature condition. Then, the creep curves obtained were fitted to a characteristic creep model, enabling the calculation of the viscoelastic parameters of each material. It was observed that the tested elastomers exhibited different elastic and viscous parameters, which were found to decrease with temperature. Particularly, it was observed that silicon rubber showed large instantaneous (elastic) strain and a small viscous deformation, whereas the Flouroelastomer rubber exhibited moderate strain curves, even at very high temperatures (100 °C and 120 °C), showing the highest creep resistance and the wider regime of linear viscoelastic behavior. ","PeriodicalId":21538,"journal":{"name":"Revista Mexicana De Fisica","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49349626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0