نتایج جستجو برای: Ordered Nanoporous

تعداد نتایج: 55415  

2017
Paskalis Sahaya Murphin Kumar Thiripuranthagan Sivakumar Takeshi Fujita Ramasamy Jayavel Hideki Abe

Nanoporous Au-Fe alloy was synthesized via a wet chemistry route using ordered nanoporous silica as a hard template. The nanoporous Au-Fe consisted of aligned arrays of nanopores that were uniform in composition and ordered in hexagonal lattice, whereas Au-Fe nanoparticles synthesized without templates exhibited broad dispersions in the chemical composition and/or particle size. Nanoporous Au-F...

Journal: :journal of nanostructures 2012
a. r. badiei g. mohammadi ziarani a. r. abbasi m. jafarabadi

the phenylthiourea-substituted triethoxysilane as a silane agent was synthesized and grafted on highly ordered nanoporous silica (lus-1) with a textured morphology and hexagonal array. this material (tu-lus-1) contained 0.8 mmol/g of soft base phenylthiourea group and surface area 760 m2g-1 and was able to adsorb 0.75 mmolhg/g of tu-lus-1 in endothermic reaction.

Journal: :Nanotechnology 2010
Mazhar E Nasir Duncan W E Allsopp Christopher R Bowen Graham Hubbard Keith P Parsons

This paper describes the formation of mono-domain highly ordered nanoporous alumina on the scale of a 2 inch diameter silicon wafer by anodization of aluminium evaporated on a patterned SiO(2) mask on a silicon substrate. The position of the ordered pores correlates with holes in the SiO(2) mask, which guide the electric field during anodization and initiates pore nucleation. The technique is s...

2003
J. Y. Chen F. M. Pan A. T. Cho K. J. Chao T. G. Tsai B. W. Wu C. M. Yang Li Chang

Microstructural and mechanical properties of organic surfactant templated nanoporous thin silica films have been studied by X-ray diffraction, Fourier transform infrared spectroscopy, and nanoindentation. Compared with many other porous low-k dielectrics, the self-assembled molecularly templated nanoporous silica films demonstrate better mechanical properties. This is ascribed to the presence o...

2006
Danilo Zschech Dong Ha Kim Alexey P Milenin Sigrid Hopfe Roland Scholz Petra Göring Reinald Hillebrand Stephan Senz Craig J Hawker Thomas P Russell Martin Steinhart Ulrich Gösele

Ordered gold nanoparticle arrays with high lateral density of 6.87 × 1010 nanoparticles cm−2, which are stable up to temperatures of 600 ◦C, were fabricated. To this end, nanoparticles formed by thermal vacuum evaporation of Au were immobilized within the pores of nanoporous silicon wafers prepared by block copolymer lithography coupled with dry plasma etching. Even after high-temperature treat...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2014
mansoor anbia morteza khazaei

in this paper, the possibility of using a new ordered nanoporous carbon as a new fiber in headspace solid phase microextraction (hs-spme) to determine of mononitrotoluenes (mnts) in waste water is demonstrated. the structural order and textural properties of the ordered nanoporous carbon were studied by x ray diffraction (xrd), scanning electron microscopy (sem) images and nitrogen adsorption i...

Journal: :Nanoscale 2012
Jaime Martín Marisol Martín-González

Large area silicon nitride (SiN(x)) nanoporous surfaces are fabricated using poly(ether-ether-ketone) (PEEK) nanorod arrays as a template. The procedure involves manipulation of nanoporous anodic aluminum oxide (AAO) templates in order to form an ordered array of PEEK nanopillars with high temperature resistant characteristics. In this context, self-ordered AAO templates are infiltrated with PE...

2013
Arash Nikoubashman Christos N. Likos Gerhard Kahl

Title: Homogeneous crystallization and local dynamics of poly(ethylene oxide) (PEO) confi ned to nanoporous alumina Bulk PEO crystallizes via heterogeneous nucleation at defects and impurities whereas PEO confi ned in self-ordered nanoporous alumina (AAO) crystallizes mainly via homogeneous. PAPER Arash Nikoubashman et al. Computer simulations of colloidal particles under fl ow in microfl uidic...

2005
V. M. Prida D. Navas K. R. Pirota M. Hernandez-Velez A. Menéndez N. Bordel R. Pereiro A. Sanz-Medel B. Hernando M. Vázquez

During the last decade, a great variety of nanostructures (nanotubes, nanofibers or nanowires) based on metals, carbons, polymers or semiconductors, have been synthesized following different synthesis procedures by using nanoporous anodic alumina membranes (AAM) as templates [1]. The principal reason for using templates of nanoporous AAM as precursor patterns lies on the possibility to obtain, ...

Journal: :Beilstein Journal of Nanotechnology 2012

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