Open Material Sciences最新文献

Improvement of the photoinduced birefringence in azopolymer PAZO doped with TiO2 nanoparticles via thermal treatment 通过热处理改善掺杂TiO2纳米粒子的偶氮聚合物PAZO的光致双折射

Open Material Sciences Pub Date : 2019-01-01 DOI: 10.1515/oms-2019-0001

G. Mateev, L. Nedelchev, A. Georgiev, D. Nazarova

引用次数: 5

Particle contamination monitoring in the backscattering light experiment for LISA LISA背向散射光实验中粒子污染监测

Open Material Sciences Pub Date : 2019-01-01 DOI: 10.1515/oms-2019-0002

S. Di Pace, A. Dabbech, V. Khodnevych, M. Lintz, Nicoleta Dinu-Jaeger

引用次数: 0

Surface plasmon-polaritons in deformed graphene excited by attenuated total internal reflection 衰减全内反射激发形变石墨烯表面等离子体极化子

Open Material Sciences Pub Date : 2019-01-01 DOI: 10.1515/oms-2019-0004

M. Usik, I. Bychkov, V. Shavrov, D. Kuzmin

引用次数: 2

Plasmon-enhanced Förster energy transfer in Langmuir-Blodgett films based on organic dyes 基于有机染料的Langmuir-Blodgett薄膜中等离子体增强Förster能量转移

Open Material Sciences Pub Date : 2019-01-01 DOI: 10.1515/oms-2019-0003

N. Ibrayev, E. Seliverstova, N. Zhumabay

引用次数: 0

Preparation and characterization of sintered clay ceramic membranes water filters 烧结粘土陶瓷膜滤水器的制备与表征

Open Material Sciences Pub Date : 2019-01-01 DOI: 10.1515/oms-2019-0005

E. Zereffa, Tegene Desalegn

{"title":"Preparation and characterization of sintered clay ceramic membranes water filters","authors":"E. Zereffa, Tegene Desalegn","doi":"10.1515/oms-2019-0005","DOIUrl":"https://doi.org/10.1515/oms-2019-0005","url":null,"abstract":"Abstract Metal oxide ceramic is getting more attention in current times due to their unique pore structures, hydrophilic surfaces, high chemical, thermal and mechanical stabilities which offer avenues for application in water treatment. This paper presents the results of an experimental study on the effects of different ratios of clay, grog, sawdust and bone char on efficiency of ceramic composite water filters. Filter of different designs were developed from clay (50, 60, 70, 75 and 80) |%|, sawdust (15, 25, and 35) |%|, grog (5 and 15) |%| bone char and 5|%| ratios by volume and sintered at temperature of 900°C for 6 hours. The Phase and functional group identification of sintered filter investigated with x-ray diffraction and infrared spectroscopy revealed the presence of mixed phase and hydroxyl functional group on the surface of sintered filter. Field emission scanning electron microscopy (FESEM) revealed the porous nature of the microstructures of the sintered filter elements. The superior ceramic water filter design (C900-50-15-35) with total porosity 35.89±0.04|%|, flow rate 2.05±0.41|%| and the percent E coli, nitrite and fluoride removal efficiency: 99.6±0.40 |%|, 81.17±0.22|%| and 96.4±0.42|%| were obtained from this work. Porosity evaluated by BET study for C900-50-15-35 demonstrated an average pore size and surface area of 5 |nm | and 7.30|m2/g|, respectively.","PeriodicalId":157396,"journal":{"name":"Open Material Sciences","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126870007","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: 3

Crystallographically Defined Silicon Macropore Membranes 晶体学定义的硅大孔膜

Open Material Sciences Pub Date : 2018-09-01 DOI: 10.1515/oms-2018-0004

Shannon Knight, Bret A. Unger, K. Kolasinski

{"title":"Crystallographically Defined Silicon Macropore Membranes","authors":"Shannon Knight, Bret A. Unger, K. Kolasinski","doi":"10.1515/oms-2018-0004","DOIUrl":"https://doi.org/10.1515/oms-2018-0004","url":null,"abstract":"Abstract Laser ablation with nanosecond-pulsed Nd:YAG laser irradiation combined with anisotropic alkaline etching of Si wafers creates 4-20 μm macropores that extend all the way through the wafer. The walls of these macropores are crystallographically defined by the interaction of the anisotropy of the etchant with the orientation of the single-crystal silicon substrate: rectangular/octagonal on Si(001), parallelepiped on Si(110), triangular/hexagonal on Si(111). Laser ablation can create pillars with peak-tovalley heights of over 100 μm. However, with nanosecondpulsed irradiation at 532 nm, the majority of this height is created by growth above the original plane of the substrate whereas for 355 nm irradiation, the majority of the height is located below the initial plane of the substrate. Repeated cycles of ablation and alkaline etching are required for membrane formation. Therefore, irradiating with 355 nm maintained better the crystallographically defined nature of the through-pores whereas irradiation at 532 nm led to more significant pore merging and less regularity in the macropore shapes. Texturing of the substrates with alkaline-etching induced pyramids or near-field modulation of the laser intensity by diffraction off of a grid or grating is used to modulate the growth of ablation pillars and the resulting macropores. Texturing causes the macropores to be more uniform and significantly improves the yield of macropores. The size range of these macropores may make them useful in single-cell biological studies.","PeriodicalId":157396,"journal":{"name":"Open Material Sciences","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127880821","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

Optical interferometry and photoacoustics as in-situ techniques to characterize the porous silicon formation: a review 光学干涉和光声作为原位技术表征多孔硅地层:综述

Open Material Sciences Pub Date : 2018-07-01 DOI: 10.1515/oms-2018-0003

C. F. Ramirez-Gutierrez, J. D. Castaño-Yepes, M. Rodriguez-Garcia

{"title":"Optical interferometry and photoacoustics as in-situ techniques to characterize the porous silicon formation: a review","authors":"C. F. Ramirez-Gutierrez, J. D. Castaño-Yepes, M. Rodriguez-Garcia","doi":"10.1515/oms-2018-0003","DOIUrl":"https://doi.org/10.1515/oms-2018-0003","url":null,"abstract":"Abstract Porous Silicon (PSi) is a groundbreaking material because its physicochemical properties can be customized through its porosity. This means that monitoring and control of the growing parameters allows the fabrication of PSi-based systems with controlled properties. Interferometry and photoacoustics are non -invasive, non - contact, real-time (in-situ) techniques used to characterize the phenomena that takes place during the formation of PSi. This work presents the mathematical and experimental aspects related to the implementation of the techniques mentioned above, which are meant to characterize the PSi growth in fluoride-based electrolyte media. These methods can determine macroscopic parameters of PSi such as thickness, porosity profile trough effective medium approximation (EMA), refractive index, etching rate, and RMS roughness under 100 nm. The monitoring ability of these techniques is strongly dependent on the wavelength of radiation used. However, it is possible to monitor thickness from λ0/4 to ∼ 1/ α0, where α0 is the optical absorption coefficient at λ0. Also, these techniques can be implemented as feedback control on the etching processes for fabrication of PSi.","PeriodicalId":157396,"journal":{"name":"Open Material Sciences","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129415322","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

Covalent grafting of graphene oxide on functionalized macroporous silicon 氧化石墨烯在功能化大孔硅上的共价接枝

Open Material Sciences Pub Date : 2018-05-01 DOI: 10.1515/oms-2018-0002

R. Moretta, M. Terracciano, P. Dardano, M. Casalino, I. Rea, L. de Stefano

引用次数: 5

Porous Materials for Immune Modulation 免疫调节用多孔材料

Open Material Sciences Pub Date : 2018-04-21 DOI: 10.1515/oms-2018-0001

M. Jeong, Hansol Kim, Ji-Ho Park

引用次数: 2

Oxidized porous silicon as a non-interfering support for luminescent dyes 氧化多孔硅作为发光染料的非干扰载体

Open Material Sciences Pub Date : 2016-12-23 DOI: 10.1515/mesbi-2016-0008

G. Santamaria-Juarez, E. Gómez-Barojas, E. Quiroga‐González, E. Sánchez-Mora, J. Luna-López

引用次数: 5