Journal of Physics and Its Applications最新文献_第3页

Analysis of Porous Silicon Formation on N-type Si (100) using Laser-Assisted Electrochemical Anodization Method 激光辅助电化学阳极氧化法在n型Si(100)上形成多孔硅的分析

Journal of Physics and Its Applications Pub Date : 2022-02-16 DOI: 10.14710/jpa.v4i2.12664

R. Suryana, Nabila Qurrota Aini

引用次数: 1

Layer deposition of titanium dioxide (TiO2) using DC-sputtering method with variation of deposition time: study of microstructure and coating hardness 随沉积时间变化的直流溅射法沉积二氧化钛(TiO2)的微观结构和镀层硬度研究

Journal of Physics and Its Applications Pub Date : 2021-11-27 DOI: 10.14710/jpa.v4i1.12331

Uli Aprilia Mukaromah, W. Andriyanti, H. Sutanto, Nuha Nazilah Sahabudin

{"title":"Layer deposition of titanium dioxide (TiO2) using DC-sputtering method with variation of deposition time: study of microstructure and coating hardness","authors":"Uli Aprilia Mukaromah, W. Andriyanti, H. Sutanto, Nuha Nazilah Sahabudin","doi":"10.14710/jpa.v4i1.12331","DOIUrl":"https://doi.org/10.14710/jpa.v4i1.12331","url":null,"abstract":"The A thin layer of titanium dioxidehas been deposited using the DC-Sputtering method at various time of deposition of 30 minutes, 60 minutes, 90 minutes, 120 minutes and 150 minutes. This study aims to grow a layer of TiO2 on the surface of stainless steel 316L with a certain time variation to determine the characterization of the microstructure, hardness, and properties of the coating to the water contact angle. The XRD test results show that the titanium dioxide (TiO2) thin layer has a TiO2-monoclinicstructure corresponding to the planes (133), (133), (220), (133) and (133), while the crystallite size can be determined using Debye-scherrer Equation were ~14.34318 nm, ~17.09422 nm, ~18.94568 nm, ~14.04389 nm, and ~7.90887 nm, respectively. The hardness value was obtained through the Vickers Hardness Test and it is known that the TiO2 layer can increase the hardness value by ~48.175% with a maximum hardness value of 170.105 VHN at a deposition time of 90 minutes. Observations from the contact angle test can be seen that the TiO2 layer is hydrophilic.","PeriodicalId":280868,"journal":{"name":"Journal of Physics and Its Applications","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126241488","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: 1

Optimization of linear taper design of a silicon-slab waveguide 硅板波导线性锥度设计的优化

Journal of Physics and Its Applications Pub Date : 2021-11-25 DOI: 10.14710/jpa.v4i1.12495

W. P. Tresna, U. Ahmad, Alexander William Setiawan Putra

引用次数: 1

Development of in-house phantoms from polyester resin and methyl ethyl ketone peroxide materials with various diameters:Investigation their CT numbers for various tube voltages and field of views 用不同直径的聚酯树脂和甲基乙基酮过氧化物材料开发内部幻影:研究它们在不同管电压和视野下的CT数

Journal of Physics and Its Applications Pub Date : 2021-11-23 DOI: 10.14710/jpa.v4i1.12254

Luthfi Nurrahma Shofiana, C. Anam, H. Sutanto, R. Asiah, Riski Nihayati, Ansory Khaerul, G. Dougherty

{"title":"Development of in-house phantoms from polyester resin and methyl ethyl ketone peroxide materials with various diameters:Investigation their CT numbers for various tube voltages and field of views","authors":"Luthfi Nurrahma Shofiana, C. Anam, H. Sutanto, R. Asiah, Riski Nihayati, Ansory Khaerul, G. Dougherty","doi":"10.14710/jpa.v4i1.12254","DOIUrl":"https://doi.org/10.14710/jpa.v4i1.12254","url":null,"abstract":"Development phantoms with various sizes reflecting the variation among patients to investigate the accuracy size-specific dose estimate (SSDE)is essential. The aim of this work was to develop in-house phantoms from polyester resin (PR) and methyl ethyl ketone peroxide (MEKP) for various diameters and investigate the CT numbers of the phantoms with various tube voltages and reconstructed field of views (FOV). In-house phantoms with diameters of 8, 16, 24, and 32 cm were developed. The phantoms were made from the PR and MEKP materials. The composition of MEKP was 0.3 wt% and PR was 99.7%. The phantoms were scanned with a Siemens SOMATOM Emotion 6 CT scanner with various tube voltage (i.e. 80, 110, and 130 kVp), and various field of views (FOVs) (i.e. 35, 40, 45, 50 cm). CT numbersof the phantoms for various diameters, tube voltages and FOVs were investigated. It was found that the CT number was in range of 86 HU to 147 HU. The CT number increased with the increases of diameter and tube voltage. However, the CT number was independent with the FOV. The in-house phantom based on PR andMEKP with various diameters from 8 cm to 32 cm have been successfully developed. The CT numbers of the phantoms depend on diameter and tube voltage,but do not depend with the FOV.","PeriodicalId":280868,"journal":{"name":"Journal of Physics and Its Applications","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134318832","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

Characteristics of colloid silver solution based on changes in concentration and electric field using electrooptic equipment 基于浓度和电场变化的胶体银溶液的电光特性

Journal of Physics and Its Applications Pub Date : 2021-11-19 DOI: 10.14710/jpa.v4i1.12419

H. Sugito, K. S. Firdausi, A. Khumaeni, Syifa Azahra

{"title":"Characteristics of colloid silver solution based on changes in concentration and electric field using electrooptic equipment","authors":"H. Sugito, K. S. Firdausi, A. Khumaeni, Syifa Azahra","doi":"10.14710/jpa.v4i1.12419","DOIUrl":"https://doi.org/10.14710/jpa.v4i1.12419","url":null,"abstract":"Research on the characteristics of colloidal silver solutions based on changes in concentration and electric field using electrooptic devices has been carried out. The purposes of this study was to determine the characteristic of colloidal silver solution based on variations in concentration and electrooptic effects. Electrooptics work based on changes in the polarization angle of the sample. The sample used is a colloidal silver solution with various concentrations. The colloidal silver solution was obtained by laser ablation method and then dissolved in aquabidest. The light source used is a laser pointer with = 532 nm. The electric field applied to the sample is 0-9 kV. The results showed that colloidal silver solution at an angle of 0º showed active plasmon resonance at the peak of polarization with concentrations of 1.9 ppm, 2.28 ppm, and 3.8 ppm. An angle of 90º also shows active plasmon resonance at the peak of polarization with a concentration of 3.8 ppm. From the results, it can be concluded that the characteristics of colloidal silver solution on change in the polarization angle due to an electric field show non-linier properties with increasing concentration.","PeriodicalId":280868,"journal":{"name":"Journal of Physics and Its Applications","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125589219","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: 1

Clustering of seismicity in the Indonesian Region for the 2018-2020 Period using the DBSCAN Algorithm 使用DBSCAN算法对印度尼西亚地区2018-2020年期间地震活动进行聚类

Journal of Physics and Its Applications Pub Date : 2021-11-06 DOI: 10.14710/jpa.v4i1.11884

Akrima Amalia, U. Harmoko, G. Yuliyanto

引用次数: 0

Zinc Oxide Nanoparticles (ZnONPs) Photocatalyst using Pulse Laser Ablation Method for Antibacterial in Water Polluted 脉冲激光烧蚀法制备氧化锌纳米粒子光催化剂在水污染中的抗菌作用

Journal of Physics and Its Applications Pub Date : 2020-06-06 DOI: 10.14710/jpa.v2i2.8001

Fatkhiyatus Sa’adah, Rizka Zakiyatul Miskiyah, A. Khumaeni

{"title":"Zinc Oxide Nanoparticles (ZnONPs) Photocatalyst using Pulse Laser Ablation Method for Antibacterial in Water Polluted","authors":"Fatkhiyatus Sa’adah, Rizka Zakiyatul Miskiyah, A. Khumaeni","doi":"10.14710/jpa.v2i2.8001","DOIUrl":"https://doi.org/10.14710/jpa.v2i2.8001","url":null,"abstract":"Synthesis of zinc oxide nanoparticles by pulse laser ablation method has been successed carried out. Synthesis was carried out in aquades medium with a repetition rate variation of 5 Hz, 10 Hz and 15 Hz pulse laser yielding brown colloids. The higher laser repetition rate, the colloidal color will be more dark brown. Characterization of zinc oxide nanoparticles includes UV-Vis, SEM-EDX, FTIR and XRD. The image of SEM shows that zinc oxide nanoparticles have a round shape. Measurement of particle distribution with imageJ software from SEM images showed that ZnO nanoparticles were 23.63 nm, 12.13 nm and 5.59 nm for 5 Hz, 10 Hz and 15 Hz shots. The EDX spectrum analysis results show that only Zn and O atoms in the ZnO nanoparticles colloid are synthesized. FTIR results showed that sprocket ZnO was formed at wave number 457 cm-1 and 545 cm-1. The XRD analysis results also show some peaks known as the ZnO phase. This indicates that ZnO nanoparticles have been formed. The testing of the antibacterial activity of ZnO nanoparticles using a liquid dilution method with nanoparticle concentrations of 40 ppm, 60 ppm and 80 ppm. The test results showed the percentage of degradation of Escherichia coli bacteria at concentrations of 40 ppm, 60 ppm and 80 ppm respectively at 89.60%, 97.76% and 98, 70%.","PeriodicalId":280868,"journal":{"name":"Journal of Physics and Its Applications","volume":"621 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123956076","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: 1

Identification of "WS" geothermal field system by analyzing TE, TM, and TE-TM of 2D magnetotelluric inversion models 通过分析二维大地电磁反演模型的TE、TM和TE-TM识别“WS”地热田系统

Journal of Physics and Its Applications Pub Date : 2019-06-20 DOI: 10.14710/JPA.V1I2.4660

Triana Triana, T. Yulianto, U. Harmoko, I. Takodama

{"title":"Identification of \"WS\" geothermal field system by analyzing TE, TM, and TE-TM of 2D magnetotelluric inversion models","authors":"Triana Triana, T. Yulianto, U. Harmoko, I. Takodama","doi":"10.14710/JPA.V1I2.4660","DOIUrl":"https://doi.org/10.14710/JPA.V1I2.4660","url":null,"abstract":"Magnetotelluric data has been carried out at the \"WS\" geothermal field to analyze the resistivity model resulting from 2D inversion of magnetotelluric data in TE, TM and TE-TM modes. Base on the three models produced, the mode is determined to produce the most representative model to assist in the interpretation of the \"WS\" geothermal system. There is a step of modes separation, namely TE (Tranverse Electric) and TM (Transverse Magnetic) modes in processing MT data. Each mode produces a 2D model with different conductivity properties. The analysis results of the three modes explain that TE mode is dominated by low resistivity with a range of values of 10-35 Ωm and medium resistivity with a value range of 35-250 Ωm and a vertical resistivity contrast. The TM mode describes the high resistivity in the Southwest and the center of the track with a value of more than 470 sehinggam resulting in lateral resistivity contrast. While the TE-TM mode produces a model that is not much different from TM mode, only the distribution of the resistivity value is a combination with TE mode. This mode describes the distribution of resistivity both vertically and laterally. Based on the analysis of the three modes, it can be concluded that the TE-TM mode is the mode that produces the most representative model. Interpretation model shows that from the TE-TM mode we have a low resistivity distribution (10-35 Ωm) represent a cap rock zone, reservoir rock with a medium resistivity distribution (35-380 Ωm), resistive zone with a high resistivity distribution (more than 380 Ωm), and the existence of the three of faults structures ro be a controller system of the \"WS\" geothermal.","PeriodicalId":280868,"journal":{"name":"Journal of Physics and Its Applications","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124867550","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

Some studies on Lorentz transformation matrix in non-cartesian co-ordinate system 非笛卡儿坐标系中洛伦兹变换矩阵的一些研究

Journal of Physics and Its Applications Pub Date : 2019-06-20 DOI: 10.14710/JPA.V1I2.4951

Mukul Chandra Das, R. Misra

引用次数: 0

Transduction matrix to enable sensor-less application of DC motor 转导矩阵，使直流电机无传感器的应用

Journal of Physics and Its Applications Pub Date : 2019-06-20 DOI: 10.14710/JPA.V1I2.4627

I. Tanra, S. Ling

引用次数: 0