Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics最新文献_第3页

Fabrication of Poly(ethylene glycol) Hydrogel Structures for Pharmaceutical Applications using Electron beam and Optical Lithography. 用电子束和光刻技术制备医药用聚乙二醇水凝胶结构。

IF 1.5 4区工程技术

Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics Pub Date : 2010-12-03 DOI: 10.1116/1.3517716

Misuk Bae, Ralu Divan, Kamlesh J Suthar, Derrick C Mancini, Richard A Gemeinhart

{"title":"Fabrication of Poly(ethylene glycol) Hydrogel Structures for Pharmaceutical Applications using Electron beam and Optical Lithography.","authors":"Misuk Bae, Ralu Divan, Kamlesh J Suthar, Derrick C Mancini, Richard A Gemeinhart","doi":"10.1116/1.3517716","DOIUrl":"10.1116/1.3517716","url":null,"abstract":"Soft-polymer based microparticles are currently being applied in many biomedical applications, ranging from bioimaging and bioassays to drug delivery carriers. As one class of soft-polymers, hydrogels are materials, which can be used for delivering drug cargoes and can be fabricated in controlled sizes. Among the various hydrogel-forming polymers, poly(ethylene glycol) (PEG) based hydrogel systems are widely used due to their negligible toxicity and limited immunogenic recognition. Physical and chemical properties of particles (i.e., particle size, shape, surface charge, and hydrophobicity) are known to play an important role in cell-particle recognition and response. To understand the role of physicochemical properties of PEG-based hydrogel structures on cells, it is important to have geometrically precise and uniform hydrogel structures. To fabricate geometrically uniform structures, we have employed electron beam lithography (EBL) and ultra-violet optical lithography (UVL) using PEG or PEG diacrylate polymers. These hydrogel structures have been characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), optical microscopy, and attenuated total reflection Fourier-transform infrared spectroscopy (ATR-FTIR) confirming control of chemistry, size, and shape.","PeriodicalId":38110,"journal":{"name":"Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics","volume":"28 6","pages":"C6P24-C6P29"},"PeriodicalIF":1.5,"publicationDate":"2010-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3060791/pdf/nihms277969.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"29757348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanostructured silicon membranes for control of molecular transport. 控制分子运输的纳米结构硅膜。

4区工程技术

Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics Pub Date : 2010-11-01 Epub Date: 2010-12-02 DOI: 10.1116/1.3518911

Bernadeta R Srijanto, Scott T Retterer, Jason D Fowlkes, Mitchel J Doktycz

引用次数: 9

Optically anisotropic infinite cylinder above an optically anisotropic half space: Dispersion interaction of a single-walled carbon nanotube with a substrate. 光学各向异性半空间上的无限圆柱体:单壁碳纳米管与衬底的色散相互作用。

4区工程技术

Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics Pub Date : 2010-05-01 Epub Date: 2010-04-27 DOI: 10.1116/1.3416904

A Siber, R F Rajter, R H French, W Y Ching, V A Parsegian, R Podgornik

{"title":"Optically anisotropic infinite cylinder above an optically anisotropic half space: Dispersion interaction of a single-walled carbon nanotube with a substrate.","authors":"A Siber, R F Rajter, R H French, W Y Ching, V A Parsegian, R Podgornik","doi":"10.1116/1.3416904","DOIUrl":"https://doi.org/10.1116/1.3416904","url":null,"abstract":"A complete form of the van der Waals dispersion interaction between an infinitely long anisotropic semiconducting/insulating thin cylinder and an anisotropic half space is derived for all separations between the cylinder and the half space. The derivation proceeds from the theory of dispersion interactions between two anisotropic infinite half spaces as formulated in Phys. Rev. A 71, 042102 (2005). The approach is valid in the retarded as well as nonretarded regimes of the interaction and is coupled with the recently evaluated ab initio dielectric response functions of various semiconducting/insulating single wall carbon nanotubes, enables the authors to evaluate the strength of the van der Waals dispersion interaction for all orientation angles and separations between a thin cylindrical nanotube and the half space. The possibility of repulsive and/or nonmonotonic dispersion interactions is examined in detail.","PeriodicalId":38110,"journal":{"name":"Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics","volume":"28 3","pages":"C4AC4A17-C4AC4A24"},"PeriodicalIF":0.0,"publicationDate":"2010-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1116/1.3416904","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32427584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Direct thermal-UV nanoimprint of an iron-containing organometallic hybrid film. 含铁有机金属杂化膜的直接热紫外纳米压印。

4区工程技术

Journal of Vacuum Science and Technology B:Nanotechnology and Microelectronics Pub Date : 2010-01-01 Epub Date: 2010-01-11 DOI: 10.1116/1.3271337

Huilan Han, Abhinav Bhushan, Frank Yaghmaie, Cristina E Davis

引用次数: 4