نتایج جستجو برای: surface imprinting technique

تعداد نتایج: 1208324  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده شیمی 1389

in this thesis, a new optically active poly(amide-imide) (pai) was synthesized by the indirect polycondensation reaction of the l-phenylalanine based diacid chloride and 4,4?-diaminodiphenylether in the presence of triethylamine in n-methyl-2-pyrrolidone. the formation of pai was confirmed by ftir, 1h nmr and elemental analysis. in next step, the surface of titanium dioxide (tio2) nanoparticles...

Journal: :Chemosensors 2021

Surface imprinting used for template recognition in nanocavities can be controlled and improved by surface morphological changes. Generally, the lithographic technique is patterning concerning sensing signal amplification molecularly imprinted polymer (MIP) thin films. In this paper, we describe effects of silanized silica molds on properties MIP Porous poly(MAA–co–EGDMA) films were lithographi...

2013
Siti Farhana Abdul Raof Sharifah Mohamad Mhd Radzi Abas

A molecularly imprinted silica gel sorbent for selective removal of 2-Hydroxybenzoic acid (2-HA) was prepared by a surface imprinting technique with a sol-gel process. The 2-HA molecularly imprinted silica gel (2-HA-MISG) sorbent was evaluated by various parameters, including the influence of pH, static, kinetic adsorption and selectivity experiments. The optimum adsorption capacity to the 2-HA...

2012
Hsin Chu Chen Kuo Ju Chen Chao Hsun Wang Chien Chung Lin Chia Chi Yeh Hsin Han Tsai Min Hsiung Shih Hao Chung Kuo Tien Chang Lu

We have successfully demonstrated the enhanced luminous flux and lumen efficiency in white light-emitting diodes by the randomly textured phosphor structure. The textured phosphor structure was fabricated by a simple imprinting technique, which does not need an expensive dry-etching machine or a complex patterned definition. The textured phosphor structure increases luminous flux by 5.4% and 2....

2012
Usman Latif Franz L. Dickert

Chemically sensitive coatings via supra-molecular chemistry are preferably combined with mass-sensitive devices. Thus, the quartz-crystal-balance (QCM) and the surface acoustic wave (SAW) oscillator allow monitoring inclusion phenomena from nanogram down to the sub-femto-gram range. A deeper insight into the inclusion process of analytes by e.g. cyclodextrines, calixarenes and paracyclophanes i...

2017
Ze Liu

Controlled fabrication of metallic nanostructures plays a central role in much of modern science and technology, because changing the dimensions of a nanocrystal enables tailoring of its mechanical, electronic, optical, catalytic and antibacterial properties. Here we show direct superplastic nanoimprinting (SPNI) of crystalline metals well below their melting temperatures, generating ordered na...

2013
Mahboobeh Manoochehri Homayon Ahmad Panahi Meghdad Karimi M. Manoochehri

Mahboobeh Manoochehri*, Homayon Ahmad Panahi, Meghdad Karimi Department of Chemistry, Islamic Azad University, Tehran Central Branch, Tehran, Iran. (Received 10 May 2012; Final version received 23 Nov. 2012) Abstract A new Pb(II) imprinted mercapto functionalized Montmorillonite was synthesize by an easy one step reaction by combining a surface imprinting technique for selective phase extractio...

Journal: :Nano letters 2011
Judson D Ryckman Marco Liscidini J E Sipe S M Weiss

This work describes a technique for one-step, direct patterning of porous nanomaterials, including insulators, semiconductors, and metals without the need for intermediate polymer processing or dry etching steps. Our process, which we call "direct imprinting of porous substrates (DIPS)", utilizes reusable stamps with micro- and nanoscale features that are applied directly to a porous material t...

Journal: :Nanotechnology 2010
Bo Cui Chris Keimel Stephen Y Chou

We report a method of one-step direct patterning of metallic nanostructures. In the method, termed laser assisted direct imprinting (LADI), the surface of a metal film on a substrate is melted by a single excimer laser pulse and subsequently imprinted within approximately 100 ns using a transparent quartz mold, while the substrate is kept at a low temperature and in a solid phase. Using LADI, w...

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