نتایج جستجو برای: micro positioning

تعداد نتایج: 159175  

2008
Seok Woo Lee Jung A Lee Seung S. Lee

Top-down approach for vertically aligned CNWs has not reported yet although it is necessary for immediate integration of CNWs with micro and nano systems. In this paper, vertically aligned pyrolyzed carbon nanowires (CNWs) is fabricated by photolithography with modification and pyrolysis as a top-down approach which the control of shape and position of CNWs is reliable. Subμm high aspect ratio ...

2014
Karan V. I. S. Kaler Ravi Prakash

Droplet microfluidics (DMF) is a fluidic handling technology that enables precision control over dispensing and subsequent manipulation of droplets in the volume range of microliters to picoliters, on a micro-fabricated device. There are several different droplet actuation methods, all of which can generate external stimuli, to either actively or passively control the shape and positioning of f...

شریفی, محمدعلی, صمدزادگان, فرهاد, فرزانه, سعید,

Celestial positioning has been used for navigation purposes for many years. Stars as the extra-terrestrial benchmarks provide unique opportunity in absolute point positioning. However, astronomical field data acquisition and data processing of the collected data is very time-consuming. The advent of the Global Positioning System (GPS) nearly made the celestial positioning system obsolete. The n...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2012
Sun Choi Arash Jamshidi Tae Joon Seok Ming C Wu Tarek I Zohdi Albert P Pisano

We report a fast, high-throughput method to create size-tunable micro/nanoparticle clusters via evaporative assembly in picoliter-scale droplets of particle suspension. Mediated by gravity force and surface tension force of a contacting surface, picoliter-scale droplets of the suspension are generated from a nanofabricated printing head. Rapid evaporative self-assembly of the particles on a hyd...

2006
Som Chattopadhyay

High precision applications, such as, semiconductor manufacturing and diamond turning of optical elements require positioning accuracy within nanometers and therefore require very precise motion control of machine tool axes. The frictional behavior at the slides is a result of very complex interaction between the contacting surfaces and lubricants. No accurate quantitative prediction of the fri...

2017
Christian Enders Eva-Maria Braig Kai Scherer Jens U. Werner Gerhard K. Lang Gabriele E. Lang Franz Pfeiffer Peter Noël Ernst Rummeny Julia Herzen

Due to limited X-ray contrast, the use of micro-CT in histology is so far not as widespread as predicted. While specific staining procedures-mostly using iodine-address this shortcoming, long diffusion times restrict its use in the often time-constrained daily routine. Recently, a novel staining protocol has been proposed using a biochemical preconditioning step, which increases the permeabilit...

Journal: :Micromachines 2023

In order to achieve the high-precision and high-efficiency machining of micro-channels for hard brittle materials, authors innovatively proposed a new technology called template-based electrophoretically assisted micro-ultrasonic (TBEPAMUSM). This transfers micro-channel shape punch-pin workpiece material through form micro-channel. At same time, it uses electrophoretic properties ultra-fine ab...

2011
Chandra S. Sharma Hari Katepalli Ashutosh Sharma Marc Madou

We demonstrate a simple, efficient and novel self-assembly based method to fabricate arrays of suspended polymeric nanofibers of polyacrylonitrile and SU-8 negative photoresist by electrospinning on micro-fabricated posts of resorcinol–formaldehyde (RF) gel. The suspended electrospun nanofibers together with the RF gel posts were subsequently pyrolyzed in an inert atmosphere to yield large area...

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