Revista Mexicana De Fisica最新文献_第9页

Investigation using Monte-Carlo codes simulations for the impact of temperatures and high pressures on thin films quality 利用蒙特卡罗代码模拟研究温度和高压对薄膜质量的影响

IF 1.7 4区物理与天体物理

Revista Mexicana De Fisica Pub Date : 2023-03-01 DOI: 10.31349/revmexfis.69.021501

Abdelkader Bouazza

{"title":"Investigation using Monte-Carlo codes simulations for the impact of temperatures and high pressures on thin films quality","authors":"Abdelkader Bouazza","doi":"10.31349/revmexfis.69.021501","DOIUrl":"https://doi.org/10.31349/revmexfis.69.021501","url":null,"abstract":"The quality of thin films represents the key to any improvement made in the device components manufacturing, and the way to obtain this quality based on deposition parameters takes the attention of our group. In this work, using the sputtering technique in the context of the Monte-Carlo approximation, an investigation of the effect of temperature and elevated pressure on the number of ejected particles and hence their deposition and the creation of finest thin films are applied. A vacuum chamber with 30x30x50 cm in dimension holding a magnetron which has a 2 cm in radius circular target was created. Inside this chamber, 105 particles of Argon (Ar) followed by the same number of xenon (Xe) gas are injected. This target moves away by 15cm from the substrate (with 7 cm in radius), containing three materials (Silicon (Si), germanium (Ge), and copper (Cu)) widely used in advanced technologies as in electronics and photovoltaic cells panels. Evident and satisfactory results were obtained, demonstrating that increasing pressure (0.5, 2, and 5 Pa) for both gases drops off in a spectacular way the total number (with different values) of the material particles reaching the substrate and disrupting the morphology of the thin films. moreover, and contrary to pressure, it has also been proved that mounting gas temperatures of 100, 300, and 600 K, representing three different states in kelvin degrees, where 100 K-173°C for the low (cold), 300 K27°C for the regular (atmospheric) and 600 K327°C for the high (warm) instances, supply a large number of materials atoms in substrate-level which conduct to the finest quality of the thin films. In addition, germanium gives the best results compared to silicon and copper.","PeriodicalId":21538,"journal":{"name":"Revista Mexicana De Fisica","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43471423","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

Elastic scattering of 7Li+58Ni: a phenomenological and microscopic analysis 7Li+58Ni的弹性散射现象学和微观分析

IF 1.7 4区物理与天体物理

Revista Mexicana De Fisica Pub Date : 2023-03-01 DOI: 10.31349/revmexfis.69.021201

N. Alsaif, Shigetaka Hamada, M. El-Azab Farid, B. M. Alotaibi, M. Alotiby, A. Ibraheem

{"title":"Elastic scattering of 7Li+58Ni: a phenomenological and microscopic analysis","authors":"N. Alsaif, Shigetaka Hamada, M. El-Azab Farid, B. M. Alotaibi, M. Alotiby, A. Ibraheem","doi":"10.31349/revmexfis.69.021201","DOIUrl":"https://doi.org/10.31349/revmexfis.69.021201","url":null,"abstract":"Motivating by examining the break-up effect of 7Li projectile into t + α cluster structure in the field of 58Ni nucleus, the available experimental angular distributions for 7Li + 58Ni elastic scattering system at energies ranging from 13 and up to 42 MeV are studied utilizing different phenomenological as well as microscopic potentials. Data analysis utilizing the Sao Paulo potential revealed that in order to reproduce the data, the strength of the real folded potential had to be reduced by ~ 36 %. While, data analysis utilizing the double folding CDM3Y6 potential with and without the rearrangement term revealed that the potential strength needed to be reduced by ~ 63 and 62 %, respectively. Cluster folding model based on the t + α cluster structure for 7Li is applied to reproduce the considered data. Similar results were obtained showing the necessity to reduce real cluster folding potential strength by about 49 %. The reported reduction in potential strength from the different implemented potentials supports the strong 7Li break-up impact. Finally, the full microscopic continuum discretized coupled channels approach is applied with a great success in reproducing the considered data. \u0000 ","PeriodicalId":21538,"journal":{"name":"Revista Mexicana De Fisica","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48154621","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

Bright optical spatial solitons in a photovoltaic photorefractive waveguide exhibiting the two photon photorefractive effect 具有双光子光折变效应的光伏光折变波导中的明亮光空间孤子

IF 1.7 4区物理与天体物理

Revista Mexicana De Fisica Pub Date : 2023-03-01 DOI: 10.31349/revmexfis.69.021301

Aavishkar Katti

引用次数: 0

Designing high sensitivity surface plasmon resonance sensor using a left-handed material layer 利用左手材料层设计高灵敏度表面等离子体共振传感器

IF 1.7 4区物理与天体物理

Revista Mexicana De Fisica Pub Date : 2023-03-01 DOI: 10.31349/revmexfis.69.021002

A. Bezza, A. Cherifi, B. bouhafs

{"title":"Designing high sensitivity surface plasmon resonance sensor using a left-handed material layer","authors":"A. Bezza, A. Cherifi, B. bouhafs","doi":"10.31349/revmexfis.69.021002","DOIUrl":"https://doi.org/10.31349/revmexfis.69.021002","url":null,"abstract":"In this contribution, we propose a new plasmonic configuration that can be functionalized in two wavelength regimes to generate a single interface mode or multiple interface modes. The structure comprises a negative metamaterial or Left-Handed Material (LHM) coated on 2S2G-glass prism and adjacent with a sensing medium. According to the results, the negative metamaterial thickness affects significantly the potential of the structure to operate as conventional plasmonic structured formed by Fabry-Perot cavities. Additionally, we, also show that the structure can be used as a plasmonic refractive index sensor defined in the range of 1 to 1.53 refractive index unit (RIU) where the full width at half maximum (FWHM) of the SPR curve on the characteristic’s manipulation such that FWHM of p-reflectivity decreases for thick LHM layer. To understand the obtained results, the optical response from the proposed waveguide was numerically predicted by the use of the transfer matrix method (TMM) and Fresnel’s theory. In addition, the potentials of the designed waveguide as an optical modulator and Fabry-Perot interferometer are also presented.","PeriodicalId":21538,"journal":{"name":"Revista Mexicana De Fisica","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46233297","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

Sm2O3: Eu3+ sol-gel ceramics obtained by the citrate sol-gel method 柠檬酸盐溶胶-凝胶法制备Sm2O3: Eu3+溶胶-凝胶陶瓷

IF 1.7 4区物理与天体物理

Revista Mexicana De Fisica Pub Date : 2023-03-01 DOI: 10.31349/revmexfis.69.021001

A. García Murillo, L. E. Francisco Martínez, F. C. Carrillo Romo

引用次数: 0

Desing of grating couplers for submicron optical waveguides 亚微米光波导光栅耦合器的设计

IF 1.7 4区物理与天体物理

Revista Mexicana De Fisica Pub Date : 2023-03-01 DOI: 10.31349/revmexfis.69.021303

Paola Góngora Lugo, E. E. García-Guerrero, E. Inzunza-González, E. Chaikina, Heriberto Márquez Becerra

引用次数: 0

Effect of Ce3+ on the morphology, composition, and thermal properties of single and core-shell polyethylene oxide electrospun fibers Ce3+对单层和核壳型聚环氧乙烷电纺纤维形态、组成和热性能的影响

IF 1.7 4区物理与天体物理

Revista Mexicana De Fisica Pub Date : 2023-03-01 DOI: 10.31349/revmexfis.69.021003

Luis A. Hoyos-Lima, V. Altuzar, Josué F. Perzábal-Domínguez, S. Muñoz-Aguirre, A. Y. Tenorio-Barajas, M. Palomino-Ovando, C. Mendoza-Barrera

{"title":"Effect of Ce3+ on the morphology, composition, and thermal properties of single and core-shell polyethylene oxide electrospun fibers","authors":"Luis A. Hoyos-Lima, V. Altuzar, Josué F. Perzábal-Domínguez, S. Muñoz-Aguirre, A. Y. Tenorio-Barajas, M. Palomino-Ovando, C. Mendoza-Barrera","doi":"10.31349/revmexfis.69.021003","DOIUrl":"https://doi.org/10.31349/revmexfis.69.021003","url":null,"abstract":"Cerium polymeric composites have novel applications in fuel cells, optical devices, gas sensors, catalysis, ultraviolet absorbers, hydrogen storage materials, and biomedicines. This study reports the fabrication of low-cost electrospun single and core-shell polyethylene oxide (PEO) doped with Cerium fibers fabricated in two moisture ambients. Scanning electron microscopy and atomic force microscopy revealed that obtaining the thinnest average fiber diameter requires 47-52 %RH and 2 % Cerium dopant. Using a PEO capping (shell fiber) allows the increment of Cerium in the inner matrix (core-fiber) to produce non-beading continuous fibers with 3.5% of the dopant. The undoped single or core-shell fibers presented a 52.7 to 54.2 % crystallinity, indecently of relative humidity used during the fabrication process. In contrast, the use of Cerium dopant up to 2% induces an increase in their crystallinity due to the formation of Ce-O species, enhancing their thermal properties, regardless of the moisture during manufacturing as was found with Fourier transform infrared spectroscopy, differential scanning calorimetry, and thermogravimetric analysis.","PeriodicalId":21538,"journal":{"name":"Revista Mexicana De Fisica","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48265734","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

On the critical behavior of the spin-s Ising model 关于spin-s-Ising模型的临界行为

IF 1.7 4区物理与天体物理

Revista Mexicana De Fisica Pub Date : 2023-03-01 DOI: 10.31349/revmexfis.69.021701

M. Amin, M. Mubark, Y. Amin

引用次数: 1

Topologically nontrivial phase in Na2CuX (X= As, Sb, Sn and Bi) full Heusler compounds: Insights from DFT-based computer simulation Na2CuX（X=As，Sb，Sn和Bi）全Heusler化合物中的拓扑非平凡相：基于DFT的计算机模拟的见解

IF 1.7 4区物理与天体物理

Revista Mexicana De Fisica Pub Date : 2023-03-01 DOI: 10.31349/revmexfis.69.020501

A. Youcef, N. Bettahar, O. Cheref, S. Benalia, ‪Djamel Rached‬, N. Benkhettou, D. Bezzerga

引用次数: 0

Molecular dynamics simulations of CBD and THC with a DPPC / DPPG monolayer membrane: Comparative study with morphine and lidocaine DPPC/DPPG单层膜对CBD和THC的分子动力学模拟：与吗啡和利多卡因的比较研究

IF 1.7 4区物理与天体物理

Revista Mexicana De Fisica Pub Date : 2023-01-03 DOI: 10.31349/revmexfis.69.011401

Gonzalo Rafael Vargas Castañeda, J. Gonzalez, G. Espinosa

{"title":"Molecular dynamics simulations of CBD and THC with a DPPC / DPPG monolayer membrane: Comparative study with morphine and lidocaine","authors":"Gonzalo Rafael Vargas Castañeda, J. Gonzalez, G. Espinosa","doi":"10.31349/revmexfis.69.011401","DOIUrl":"https://doi.org/10.31349/revmexfis.69.011401","url":null,"abstract":"In recent years, the discussion about using marijuana to treat some specific diseases has been the reason for several studies to determine how Cannabis could affect or benefit the human body, such as chronic pain. However, the legal status of marijuana in different parts of the world remains a problem when conducting experiments for academic purposes. In this way, algorithms based on molecular dynamics are of great help to study the change in the physical properties of membranes, which is our first defense barrier, in the presence of external agents. Here we used equilibrium molecular dynamics to study the interactions of a DPPC/DPPG monolayer membrane with CBD and THC, these two molecules being one of the main components of Cannabis, and compare the interactions with morphine and lidocaine which are drugs with well-known anesthetic properties. We also used the umbrella sampling method to determine the variations of the potential of mean forces as every single drug crosses the membrane obtaining an approximation of the hydration free energy, we obtained a value of 57 kJ mol-1 for CBD and 5 kJ mol-1 for THC; values reported for the first time using molecular dynamics.","PeriodicalId":21538,"journal":{"name":"Revista Mexicana De Fisica","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44923562","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