Surface Innovations最新文献_第4页

Surface modifications and optical studies of irradiated flexible PDMS materials 辐照柔性PDMS材料的表面改性及光学研究

IF 3.5 4区材料科学

Surface Innovations Pub Date : 2023-02-09 DOI: 10.1680/jsuin.22.01089

B. M. Alotaibi, M. Atta, E. Abdeltwab, A. Atta, M. Abdel-Hamid

{"title":"Surface modifications and optical studies of irradiated flexible PDMS materials","authors":"B. M. Alotaibi, M. Atta, E. Abdeltwab, A. Atta, M. Abdel-Hamid","doi":"10.1680/jsuin.22.01089","DOIUrl":"https://doi.org/10.1680/jsuin.22.01089","url":null,"abstract":"This work aimed to modify the surface properties of polydimethylsiloxane (PDMS) for used in optoelectronic devices utilizing handmade ion source. The films were exposed to hydrogen fluence of 6x1017, 9x1017, and 12x1017 ions/cm2. XRD as well as FTIR were used to reveal the changes in PDMS after irradiation. Similarly, SEM is employed to examine the morphological alterations of irradiated surfaces. The band gap and band tail of pristine and treated films were estimated using Tauc’s methodology. By raising hydrogen fluence from 6x1017 ions/cm2 to 12x1017 ions/cm2, the band gap is lowered from 5.06 eV to 4.86 eV. Furthermore, the band tail energy is improved from 0.53 eV for PVA to 0.55 eV for 6x1017 and to 0.63 eV for 9x1017 ions/cm2. In addition, the dispersion characteristics of were estimated using the Wemple Di-Domenico method. Moreover, the extinction coefficients and refractive index were calculated. The recorded relaxation time is reduced from 2.06x10−7 sec to 1.65x10−7 sec respectively, by enhancing ion fluence from 6x1017 to 12x1017 ions/cm2. According to the finding results, ion beam irradiation is induced modification in the irradiated films for used in optical devices.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48681574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Prediction of Escherichia coli concentration from wetting properties of beach sand using machine learning models 利用机器学习模型从沙滩的润湿特性预测大肠杆菌浓度

IF 3.5 4区材料科学

Surface Innovations Pub Date : 2023-02-03 DOI: 10.1680/jsuin.22.01087

Md Syam Hasan, Alma Nunez, Michael Nosonovsky, Marcia R. Silva

引用次数: 0

Surface Innovations: Referees 2022 表面创新:裁判员2022

4区材料科学

Surface Innovations Pub Date : 2023-02-01 DOI: 10.1680/jsuin.2023.11.1.210

引用次数: 0

Wetting stability of flexible superamphiphobic surfaces under stretching loading 拉伸载荷下柔性超双疏表面的润湿稳定性

4区材料科学

Surface Innovations Pub Date : 2023-02-01 DOI: 10.1680/jsuin.21.00079

Shuangshuang Xu, Qing Wang, Ning Wang, Lei Qu

{"title":"Wetting stability of flexible superamphiphobic surfaces under stretching loading","authors":"Shuangshuang Xu, Qing Wang, Ning Wang, Lei Qu","doi":"10.1680/jsuin.21.00079","DOIUrl":"https://doi.org/10.1680/jsuin.21.00079","url":null,"abstract":"Wetting stability is important for superamphiphobic surfaces used in oil–water environments. Maintaining the wetting stability of flexible superamphiphobic surfaces under stretching is challenging. Here, flexible surfaces with stable superamphiphobicity under stretching were fabricated by covering flexible polydimethylsiloxane substrates with superamphiphobic powders. Superamphiphobic powders composed of micro- and nanoparticles were prepared by a chemical substitution reaction and modification treatment. The fabricated flexible surfaces possessed contact angles for water, kerosene and peanut oil of 155, 152 and 153°, respectively, exhibiting superhydrophobicity and superoleophobicity. The self-cleaning properties of the fabricated flexible surface were studied by removing contaminants from the surfaces using water and oil droplets. Also, the wettability and morphology of the fabricated flexible surface under stretching were investigated. It was found that the fabricated flexible surface maintained stable superhydrophobicity and superoleophobicity when the stretching strain reached 60% due to the fact that it still kept micro–nano double-scale structures after being stretched. The fabricated flexible surface coated with superamphiphobic powders with wetting stability is expected to be used in the field of liquid repellency.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":"189 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135659037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Award-winning paper in 2021 2021年获奖论文

4区材料科学

Surface Innovations Pub Date : 2023-02-01 DOI: 10.1680/jsuin.2023.11.1.209

引用次数: 0

Mask-assisted chemical processing methods to fabricate wettability patterns on copper substrates for liquid manipulation 掩模辅助化学处理方法在铜衬底上制造用于液体操作的润湿性图案

IF 3.5 4区材料科学

Surface Innovations Pub Date : 2023-01-26 DOI: 10.1680/jsuin.22.01075

Wangyu Liu, Zhen Liang, Weigui Xie, Guangwen Huang, Yuanqiang Luo

{"title":"Mask-assisted chemical processing methods to fabricate wettability patterns on copper substrates for liquid manipulation","authors":"Wangyu Liu, Zhen Liang, Weigui Xie, Guangwen Huang, Yuanqiang Luo","doi":"10.1680/jsuin.22.01075","DOIUrl":"https://doi.org/10.1680/jsuin.22.01075","url":null,"abstract":"Extreme wettability-patterned surfaces have attracted great attentions due to their excellent application prospects for liquid manipulation. However, developing a simple and universal method to fabricate wettability patterns on a variety of metals remains a great challenge. In this work, we developed three specific preparation approaches to fabricate wettability patterns on copper substrate using chemical processing combined with mask technology. Surface wettability can be suitably controlled by changing the solution concentration and immersing time. The surface has good stability and low pollution under external action. Three preparation methods have differences in preparation process, wettability and mask function. On the basis of these approaches, various complex wettability patterns could be prepared on different metal substrates using designed masks. Furthermore, various wettability-patterned surfaces were successfully fabricated for liquid manipulating applications, such as controlling fluid shape and water transport. These methods proposed is expected to have promising application potential in patternable printing, water collection and heat-dissipation devices.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43401370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and corrosion resistance of KTNT-waterborne polyurethane coatings ktnt水性聚氨酯涂料的制备及其耐腐蚀性能

IF 3.5 4区材料科学

Surface Innovations Pub Date : 2023-01-16 DOI: 10.1680/jsuin.20.00054

Xia Wang, Xiong Li, Ling Feng Xu, Q. Zhang, Yue Gu

{"title":"Preparation and corrosion resistance of KTNT-waterborne polyurethane coatings","authors":"Xia Wang, Xiong Li, Ling Feng Xu, Q. Zhang, Yue Gu","doi":"10.1680/jsuin.20.00054","DOIUrl":"https://doi.org/10.1680/jsuin.20.00054","url":null,"abstract":"In this study, titanate nanotubes (TNTs) were prepared via the hydrothermal method and then modified with γ-aminopropyltriethoxysilane (KH550) to obtain KTNTs with good dispersion properties. A KTNT-WPU composite coating was prepared by blending KTNTs with waterborne polyurethane (WPU). Fourier transform infrared spectroscopy (FT-IR) was used to characterize TNT compositions before and after modification. Thermogravimetric analysis (TGA) and electrochemical impedance spectroscopy (EIS) were used to test the thermal stability and corrosion resistance of the composite coating. The results showed that KH550 was successfully connected to the TNT surface. This improved thermal stabilities and corrosion resistances of the KTNT-WPU coatings. The fastest thermal decomposition rate for the 0.5% KTNT composite coating was 2%/min lower than that of the pure WPU coating. At the same time, the impedance of the composite coating could reach 7.58×107 Ω·cm2, the corrosion current density was 3.20×10−9 A·cm-2, and the corrosion inhibition rate reached 99.87%. The composite coating had an effective corrosion protection time of 120 h and the protective effect of the coating weakened when the immersion time exceeded 360 h.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48350485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modifying optical properties of hydrogen beam irradiated flexible PVA polymeric films 氢束辐照柔性聚乙烯醇聚合物薄膜光学性能的改性

IF 3.5 4区材料科学

Surface Innovations Pub Date : 2023-01-11 DOI: 10.1680/jsuin.22.01078

B. M. Alotaibi, A. Atta, M. Atta, E. Abdeltwab, M. Abdel-Hamid

{"title":"Modifying optical properties of hydrogen beam irradiated flexible PVA polymeric films","authors":"B. M. Alotaibi, A. Atta, M. Atta, E. Abdeltwab, M. Abdel-Hamid","doi":"10.1680/jsuin.22.01078","DOIUrl":"https://doi.org/10.1680/jsuin.22.01078","url":null,"abstract":"In this study, Polyvinyl alcohol (PVA) films were irradiated with hydrogen beam of fluence 8x1017, 16x1017, and 24x1017 ions/cm2 using handmade cold beam ion source. The resulting changes in the structure characteristics and functional groups of irradiated PVA films were studied using XRD and FT-IR methods respectively. In addition, the optical band gaps and Urbach energies of untreated and irradiated PVA were calculated using Tauc’s equation. The tail is 1.29 eV for PVA, improved to 1.59 eV and 4.17 eV when PVA was exposed to 8x1017 and 24x1017 ions/cm2, respectively. Furthermore, the parameters including refractive index, extinction coefficient, conductivities, and permittivity for untreated and treated samples have been calculated. Furthermore, the dispersion characteristics of un-irradiated and treated films are evaluated. With increasing hydrogen fluence of 8x1017 to 24x1017 ions/cm2, the relaxation time is reduced from 2.75x10−14 sec to 0.045x10−14 sec. On the other hand, the optical susceptibility of pure and treated PVA has been calculated. The modification which induced in the optical characteristics of the irradiation films suggests these films to apply in a different uses like optoelectronics devices.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47957513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Effects of asymmetric cooling and surface wettability on the orientation of the freezing tip 非对称冷却和表面润湿性对冻结尖端取向的影响

IF 3.5 4区材料科学

Surface Innovations Pub Date : 2023-01-10 DOI: 10.1680/jsuin.22.01081

A. Starostin, V. Strelnikov, L. Dombrovsky, S. Shoval, O. Gendelman, E. Bormashenko

{"title":"Effects of asymmetric cooling and surface wettability on the orientation of the freezing tip","authors":"A. Starostin, V. Strelnikov, L. Dombrovsky, S. Shoval, O. Gendelman, E. Bormashenko","doi":"10.1680/jsuin.22.01081","DOIUrl":"https://doi.org/10.1680/jsuin.22.01081","url":null,"abstract":"Freezing of water droplets placed on the bare and superhydrophobic surfaces of polymer wedges is studied both experimentally and computationally. Two-dimensional numerical calculations of the transient temperature field in a chilled polymer wedge show that the direction of heat flux from the droplet through the thermal contact region with the wedge differs significantly from the normal to the wedge surface. A novel approximate computational model is proposed that takes into account the variable area of the water freezing front in the droplet. This model gives a quantitative estimate of the faster freezing of the droplet on the bare surface. The obtained numerical results agree with the laboratory measurements. The velocity of the crystallization front and the droplet deformation including the so-called freezing tip formation are monitored in the experiment. The direction of the freezing cone axis appears to be noticeably different for the cases of bare and superhydrophobic wedge surfaces. This is explained by the fact that the direction of the freezing cone axis is controlled by the local direction of the heat flux. For a hydrophobic wedge surface, the deviation of the freezing tip from the vertical is smaller, because the reduced thermal contact area reduces the influence of the heat flux direction at the wedge surface.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43168096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Suppression of Leidenfrost instability of a large drop using multiple rods and rectangular mesh elements 用多杆和矩形网格单元抑制大液滴的Leidenfrost不稳定性

IF 3.5 4区材料科学

Surface Innovations Pub Date : 2023-01-09 DOI: 10.1680/jsuin.22.01085

Xiang Wang, Manjarik Mrinal, Z. Han, C. Luo

{"title":"Suppression of Leidenfrost instability of a large drop using multiple rods and rectangular mesh elements","authors":"Xiang Wang, Manjarik Mrinal, Z. Han, C. Luo","doi":"10.1680/jsuin.22.01085","DOIUrl":"https://doi.org/10.1680/jsuin.22.01085","url":null,"abstract":"Large Leidenfrost drops may be unstable when their diameters exceed a critical value. Via theoretical and experimental investigations, this study explored the feasibility of suppressing Leidenfrost instability in a large container, by meshing the container or its central portion into rectangular elements. Thin rods were used to construct these rectangular elements. Thin rods were used to construct these rectangular elements. Leidenfrost instability was considered in four rectangular configurations. They were also the rectangular mesh elements that might be used. There were two findings. First, the diameter of the largest inscribed cylinder in a rectangular configuration was the critical dimension to determine Leidenfrost instability. Second, the threshold value of this diameter in a rectangular configuration with rod(s) was 8.9 ± 0.7λ, where λ was the capillary length of water. It was larger than its counterparts in both a rectangular container (without the presence of a rod) and a circular container (with or without the presence of a rod), due to the strong effect of the rod in a rectangular configuration. Based on these two findings, a large rectangular container was meshed into rectangular elements using thin rods, with the diameter of the largest inscribed cylinder in each element below the threshold value. This mesh method suppressed the Leidenfrost instability in the large container.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46485979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0