نتایج جستجو برای: micromanufacturing

تعداد نتایج: 55  

Journal: :international journal of advanced design and manufacturing technology 0
mohammad tahmasebipour faculty of new sciences & technologies, university of tehran, tehran, iran *corresponding author y. tahmasebipour micro/nano-manufacturing technologies development laboratory, faculty of new sciences & technologies, university of tehran, iran a. shabani micro/nano-manufacturing technologies development laboratory, faculty of new sciences & technologies, university of tehran, iran m. boujari aliabadi faculty of new sciences & technologies, university of tehran, tehran, iran

the micro wire electrical discharge machining (micro wire-edm) process is a modern machining process with various applications in manufacturing micro-parts. the recast layer remaining on the machined surfaces is an inevitable complication of this process. this layer can subsequently affect the machined parts performance. to optimize the recast layer in the micro wire-edm of the molybdenum micro...

2013
David C. Wyld Gaurav Singh Naruka Niharika Jha Himanshu Dutt Sharma

A microcontroller based control system to drive the Physik Instrumente (PI ) piezoelectric ultrasonic nano-positioning (PUN) stage for a micro-factory has been proposed by the author. The tuning parameters of the PI Line Controller are chosen such that the PUN stage shows optimum step response. The microcontroller i.e. LPC2478R provides the user with the choices of operations on the 3.2” QVGA L...

Journal: :Advanced Optical Materials 2022

Highly reproducible manufacturing of organic optical crystals with well-defined geometry and dimension is important to realize industrially relevant all-organic microelectronic nanophotonic components photonic integrated circuits. Here, programmed shape size alteration square-shaped perylene crystal resonators into circular disk rectangular geometries demonstrated using the focused-ion-beam mil...

Journal: :Virtual and Physical Prototyping 2022

Metamaterials are engineered materials conceived and designed to achieve very special or even unique physical properties, which depend on the micro nanostructures, more than chemical composition of raw employed for their fabrication. Normally metamaterials made periodic repetitions unit cells Boolean combinations lattices porous building blocks. Metasurfaces quasi-two-dimensional version genera...

Journal: :Micromachines 2016
Gunjan Agarwal Carol Livermore

A technique for shape-selective directed assembly of anisotropic, deformable, chemically-identical microcomponents onto patterned rigid templates based on shape and size differences is modeled and demonstrated. The assembly method not only controls the selective placement of the components, but also aligns the components with the assembly sites. Unlike the assembly of isotropic (spherical) micr...

Journal: :Micromachines 2012
Francesco Venturini Maurizio Sansotera Rebeca Martinez Vazquez Roberto Osellame Giulio Cerullo Walter Navarrini

Femtosecond laser irradiation followed by chemical etching (FLICE) with hydrogen fluoride (HF) is an emerging technique for the fabrication of directly buried, three-dimensional microfluidic channels in silica. The procedure, as described in literature, consists of irradiating a silica slab followed by chemical etching using hydrogen fluoride. With aqueous HF the etching process is diffusion-li...

2012
Markus Dickerhof Sabino Azcarate Attila Temun

The paper describes a comprehensive approach for the modelling and description of technologies available within a European Research Infrastructure consisting of distributed research infrastructures all over Europe. The resulting knowledge management system integrates the partial approaches of several European research activities in this area to a comprehensive description format for technical c...

2017
T. J. Ferreira A. R. Farinha T. G. Santos R. Miranda C.C.C.R. Carvalho M. T. Vieira

Micromanufacturing has increased rapidly at scientific, technological and industrial levels. However, this evolution has not been followed by a parallel development of Non Destructive Testing (NDT) techniques. The available techniques are, generally, unable to detect microdefects. In this work, two types of microgeometries were produced by Micro Powder Inj stainless steel AISI316L: specimens fo...

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