THE Coatings最新文献_第6页

Effect of Annealing Temperature on Microstructure and Resistivity of TiC Thin Films 退火温度对TiC薄膜微观结构和电阻率的影响

THE Coatings Pub Date : 2021-04-15 DOI: 10.3390/COATINGS11040457

Litipu Aihaiti, K. Tuokedaerhan, B. Sadeh, M. Zhang, Xiangqian Shen, Abuduwaili Mijiti

{"title":"Effect of Annealing Temperature on Microstructure and Resistivity of TiC Thin Films","authors":"Litipu Aihaiti, K. Tuokedaerhan, B. Sadeh, M. Zhang, Xiangqian Shen, Abuduwaili Mijiti","doi":"10.3390/COATINGS11040457","DOIUrl":"https://doi.org/10.3390/COATINGS11040457","url":null,"abstract":"Titanium carbide (TiC) thin films were prepared by non-reactive simultaneous double magnetron sputtering. After deposition, all samples were annealed at different temperatures under high-vacuum conditions. This paper mainly discusses the influence of deposition methods and annealing temperatures on microstructure, surface topography, bonding states and electrical resistivity of TiC films. XRD (X-ray diffraction) results show that TiC thin films can still form crystals without annealing, and the crystallinity of thin films is improved after annealing. The estimated grain size of the TiC films varies from 8.5 nm to 14.7 nm with annealing temperature. It can be seen from SEM (scanning electron microscope) images that surfaces of the films are composed of irregular particles, and when the temperature reaches to 800 °C, the shape of the particles becomes spherical. Growth rate of film is about 30.8 nm/min. Oxygen-related peaks were observed in XPS (X-ray photoelectron spectroscopy) spectra, which is due to the absorption of oxygen atoms on the surface of the film when exposed to air. Raman spectra confirm the formation of TiC crystals and amorphous states of carbon. Resistivity of TiC films decreases monotonically from 666.73 to 86.01 μΩ·cm with the increase in annealing temperature. In brief, the TiC thin films prepared in this study show good crystallinity, thermal stability and low resistivity, which can meet the requirements of metal gate applications.","PeriodicalId":22482,"journal":{"name":"THE Coatings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76253549","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: 9

Enhancing Lithium Manganese Oxide Electrochemical Behavior by Doping and Surface Modifications 通过掺杂和表面改性增强锰酸锂的电化学行为

THE Coatings Pub Date : 2021-04-15 DOI: 10.3390/COATINGS11040456

Alexandru-Horațiu Mărincaş, P. Ilea

引用次数: 12

Alloyed High-k-Based Resistive Switching Memory in Contact Hole Structures 接触孔结构中的合金高基电阻开关存储器

THE Coatings Pub Date : 2021-04-14 DOI: 10.3390/COATINGS11040451

B. Kim, C. Mahata, Hojeong Ryu, M. Ismail, Byung‐Do Yang, Sungjun Kim

引用次数: 4

Gold, Silver, and Electrum Electroless Plating on Additively Manufactured Laser Powder-Bed Fusion AlSi10Mg Parts: A Review 激光粉末床熔合AlSi10Mg零件的化学镀金、银和铜的研究进展

THE Coatings Pub Date : 2021-04-06 DOI: 10.3390/COATINGS11040422

D. Ashkenazi, A. Inberg, Y. Shacham-Diamand, A. Stern

{"title":"Gold, Silver, and Electrum Electroless Plating on Additively Manufactured Laser Powder-Bed Fusion AlSi10Mg Parts: A Review","authors":"D. Ashkenazi, A. Inberg, Y. Shacham-Diamand, A. Stern","doi":"10.3390/COATINGS11040422","DOIUrl":"https://doi.org/10.3390/COATINGS11040422","url":null,"abstract":"Additive manufacturing (AM) revolutionary technologies open new opportunities and challenges. They allow low-cost manufacturing of parts with complex geometries and short time-to-market of products that can be exclusively customized. Additive manufactured parts often need post-printing surface modification. This study aims to review novel environmental-friendly surface finishing process of 3D-printed AlSi10Mg parts by electroless deposition of gold, silver, and gold–silver alloy (e.g., electrum) and to propose a full process methodology suitable for effective metallization. This deposition technique is simple and low cost method, allowing the metallization of both conductive and insulating materials. The AlSi10Mg parts were produced by the additive manufacturing laser powder bed fusion (AM-LPBF) process. Gold, silver, and their alloys were chosen as coatings due to their esthetic appearance, good corrosion resistance, and excellent electrical and thermal conductivity. The metals were deposited on 3D-printed disk-shaped specimens at 80 and 90 °C using a dedicated surface activation method where special functionalization of the printed AlSi10Mg was performed to assure a uniform catalytic surface yielding a good adhesion of the deposited metal to the substrate. Various methods were used to examine the coating quality, including light microscopy, optical profilometry, XRD, X-ray fluorescence, SEM–energy-dispersive spectroscopy (EDS), focused ion beam (FIB)-SEM, and XPS analyses. The results indicate that the developed coatings yield satisfactory quality, and the suggested surface finishing process can be used for many AM products and applications.","PeriodicalId":22482,"journal":{"name":"THE Coatings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75989011","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: 13

Heat Transfer in Nanomaterial Suspension (CuO and Al2O3) Using KKL Model 基于KKL模型的纳米悬浮液(CuO和Al2O3)传热研究

THE Coatings Pub Date : 2021-04-04 DOI: 10.3390/COATINGS11040417

M. Awais, Saeed Ehsan Awan, M. Raja, M. Nawaz, Wasim Ullah Khan, Muhammad Yousaf Malik, Yigang He

引用次数: 17

High Stability of Liquid-Typed White Light-Emitting Diode with Zn0.8Cd0.2S White Quantum Dots Zn0.8Cd0.2S白量子点液体型白光二极管的高稳定性

THE Coatings Pub Date : 2021-04-02 DOI: 10.3390/COATINGS11040415

Chin-Chuan Huang, Kuo-Hsiung Chu, C. Sher, Chunliang Lin, Y. Su, Chia-Wei Sun, H. Kuo

引用次数: 3

Improve the Performance of SONOS Type UV TD Sensors Using IOHAOS with Enhanced UV Transparency ITO Gate 利用具有增强UV透明度ITO栅极的IOHAOS改善SONOS型UV TD传感器的性能

THE Coatings Pub Date : 2021-04-01 DOI: 10.3390/COATINGS11040408

W. Hsieh, Fun-Cheng Jong, Wei-Ting Tseng

{"title":"Improve the Performance of SONOS Type UV TD Sensors Using IOHAOS with Enhanced UV Transparency ITO Gate","authors":"W. Hsieh, Fun-Cheng Jong, Wei-Ting Tseng","doi":"10.3390/COATINGS11040408","DOIUrl":"https://doi.org/10.3390/COATINGS11040408","url":null,"abstract":"This research demonstrates that an indium tin oxide–silicon oxide–hafnium aluminum oxide-silicon oxide–silicon device with enhanced UV transparency ITO gate (hereafter E-IOHAOS) can greatly increase the sensing response performance of a SONOS type ultraviolet radiation total dose (hereafter UV TD) sensor. Post annealing process is used to optimize UV optical transmission and electrical resistivity characterization in ITO film. Via nano-columns (NCols) crystalline transformation of ITO film, UV transparency of ITO film can be enhanced. UV radiation causes the threshold voltage VT of the E-IOHAOS device to increase, and the increase of the VT of E-IOHAOS device is also related to the UV TD. The experimental results show that under UV TD irradiation of 100 mW·s/cm2, ultraviolet light can change the threshold voltage VT of E-IOHAOS to 12.5 V. Moreover, the VT fading rate of ten-years retention on E-IOHAOS is below 10%. The VT change of E-IOHAOS is almost 1.25 times that of poly silicon–aluminum oxide–hafnium aluminum oxide–silicon oxide–silicon with poly silicon gate device (hereafter SAHAOS). The sensing response performance of an E-IOHAOS UV TD sensor is greatly improved by annealed ITO gate.","PeriodicalId":22482,"journal":{"name":"THE Coatings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76891304","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

Application of Nanotechnology in Immunity against Infection 纳米技术在抗感染免疫中的应用

THE Coatings Pub Date : 2021-04-01 DOI: 10.3390/COATINGS11040430

Jingxin Zhang, Weiyue Shi, Q. Ma, H. Cui, Liang Zhang

{"title":"Application of Nanotechnology in Immunity against Infection","authors":"Jingxin Zhang, Weiyue Shi, Q. Ma, H. Cui, Liang Zhang","doi":"10.3390/COATINGS11040430","DOIUrl":"https://doi.org/10.3390/COATINGS11040430","url":null,"abstract":"The immune system has a physiological defense function, protecting the body from infectious diseases. Antibiotics have long been one of the most important means to treat infectious diseases, but in recent years, with the emergence of more and more multidrug-resistant (MDR) bacteria, it has become urgent to find new ways or drugs to treat infectious diseases. Nanoparticles (NPs) have attracted extensive attention owing to the special properties within the particle size range of 1–100 nanometers. In addition, NPs also have special shape symmetry and relative structural stability. The emergence of nanotechnology has brought new light to the widespread existence of MDR by its different antibacterial mechanisms. In addition to antibiotic nanocarriers being able to improve the antibacterial effect of antibiotics, some NPs also have certain antibacterial effect. What is more interesting is that linking functional groups on the surface of NPS as coatings can improve the stability of the whole system and improve the biocompatibility. The present review overviews the development of antimicrobial agents, so as to better understand the causes and mechanisms of antibiotic resistance in most microbial species, and to better think and explore new strategies to solve the problem. At the same time, this review introduces how nanotechnology can be applied to anti-infection immunity and its practical application and advantages in the treatment of infection.","PeriodicalId":22482,"journal":{"name":"THE Coatings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75378937","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: 7

Study of the Annealing Effect on the γ-Phase Aluminum Oxide Films Prepared by the High-Vacuum MOCVD System 高真空MOCVD系统制备γ相氧化铝膜的退火效应研究

THE Coatings Pub Date : 2021-03-29 DOI: 10.3390/COATINGS11040389

Zhaohan Li, Yangmei Xin, Yunyan Liu, Huiqiang Liu, Dan Yu, J. Xiu

{"title":"Study of the Annealing Effect on the γ-Phase Aluminum Oxide Films Prepared by the High-Vacuum MOCVD System","authors":"Zhaohan Li, Yangmei Xin, Yunyan Liu, Huiqiang Liu, Dan Yu, J. Xiu","doi":"10.3390/COATINGS11040389","DOIUrl":"https://doi.org/10.3390/COATINGS11040389","url":null,"abstract":"γ-phase aluminum oxide (γ-Al2O3) films are grown on MgO (100) wafers by metal organic chemical vapor deposition (MOCVD). Post-annealing process is conducted to study the influence of annealing temperature on the properties of the films. Structural analyses indicate that all the deposited and annealed films present a preferred growth orientation of γ-Al2O3 (220) along the MgO (200) direction. And the film annealed at 1100 °C exhibits the best film quality compared with those of the films grown and annealed at other temperatures. Scanning electron microscopy measurements also imply the best surface morphology for the γ-Al2O3 film annealed at 1100 °C, which is in good accordance with the structural analyses. Optical transmittance spectra show good transparency for all the deposited and annealed films in the visible wavelength region with an average transmittance value of 83.5%. The optical bandgaps are estimated to be in the range of 5.56–5.79 eV for the deposited and annealed films. Semiconductor films with high optical transmittance in the visible region as well as wide bandgaps are appropriate for the manufacture of transparent optoelectronic devices and ultraviolet optoelectronic devices.","PeriodicalId":22482,"journal":{"name":"THE Coatings","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87607874","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: 7

High Entropy Alloy Coatings and Technology 高熵合金涂层与技术

THE Coatings Pub Date : 2021-03-24 DOI: 10.3390/COATINGS11040372

Ashutosh Sharma

引用次数: 39