نتایج جستجو برای: nano patterning

تعداد نتایج: 69492  

2017
Ibtihel Chaabane Debika Banerjee Oualid Touayar Sylvain G. Cloutier

Due to its high refractive index, reflectance is often a problem when using Germanium for optoelectronic devices integration. In this work, we propose an effective and low-cost nano-texturing method for considerably reducing the reflectance of bulk Germanium. To do so, uniform V-shape pit arrays are produced by wet electroless chemical etching in a 3:1 volume ratio of highly-concentrated hydroc...

Journal: :Physical review letters 2012
K R Elder G Rossi P Kanerva F Sanches S-C Ying E Granato C V Achim T Ala-Nissila

Thin heteroepitaxial overlayers have been proposed as templates to generate stable, self-organized nanostructures at large length scales, with a variety of important technological applications. However, modeling strain-driven self-organization is a formidable challenge due to different length scales involved. In this Letter, we present a method for predicting the patterning of ultrathin films o...

Journal: :Nature nanotechnology 2010
P Ferraro S Coppola S Grilli M Paturzo V Vespini

Manipulating and dispensing liquids on the micrometre- and nanoscale is important in biotechnology and combinatorial chemistry, and also for patterning inorganic, organic and biological inks. Several methods for dispensing liquids exist, but many require complicated electrodes and high-voltage circuits. Here, we show a simple way to draw attolitre liquid droplets from one or multiple sessile dr...

2004
R. Alejandra Lukaszew Zhengdong Zhang Dave Pearson Antonio Zambano

We have attempted to clarify possible domain-wall processes present in the recently reported large ballistic magnetoresistance effects in nano-contacts. To that effect we have used e-beam lithography applied to epitaxial Ni films to fabricate nano-bridges in more controlled geometry than electrochemical deposition. Our preliminary results indicate that magnetic domains do play a role in the mag...

2016
A. A. Vasin N. V. Klassen A. M. Likhter

Water suspensions of in-organic (metals and oxides) and organic nano-objects (chitozan and collagen) were subjected to the treatment of direct and alternative electrical fields. In addition to quasi-periodical spatial patterning resonance-like performance of spatial distributions of these suspensions has been found at low frequencies of alternating electrical field. These resonances are explain...

2015
Ying Min Wang Liangxing Lu Bharathi Madurai Srinivasan Mohamed Asbahi Yong Wei Zhang Joel K. W. Yang

We introduce an approach to fabricate ordered arrays of 10-nm-scale silica-filled apertures in a metal film without etching or liftoff. Using low temperature (<400°C) thermal dewetting of metal films guided by nano-patterned templates, apertures with aspect ratios up to 5:1 are demonstrated. Apertures form spontaneously during the thermal process without need for further processing. Although th...

Journal: :Methods in cell biology 2007
Joachim P Spatz Benjamin Geiger

Engineering of the cellular microenvironment has become a valuable means to guide cellular activities such as spreading, motility, differentiation, proliferation, or apoptosis. This chapter summarizes recent approaches to surface patterning such as topography and chemical patterning from the micrometer to the nanometer scale, and illustrates their application to cellular studies. Particular att...

Journal: :Journal of the Royal Society, Interface 2010
Xiang Li Garrit Koller Jie Huang Lucy Di Silvio Tara Renton Minoo Esat William Bonfield Mohan Edirisinghe

Surface topography is well known to play a crucial role in influencing cellular responses to an implant material and is therefore important in bone tissue regeneration. A novel jet-based patterning technique, template-assisted electrohydrodynamic atomization spraying, was recently devised to control precisely the surface structure as well as its dimensions. In the present study, a detailed inve...

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