Smart Platform for Rapid Prototyping: A First Solution Approach to Improve Time-to-Market and Process Control in Low-Volume Device Fabrication

AbstractPyrometry Interferometry (PI) is a powerful technique for in-situ sensing of the wafer temperature and growth rate. Evaluation of the two parameters would allow exact process control required for sophisticated device fabrication and material processing. The PI technique analyzes the interference patterns of the thermal radiation from the growing layer with a changing thickness d at growth temperature T. Since it is non-contact, applicable to all semiconductor materials and insensitive to wafer motion, the method is an ideal candidate for real time process control. We use a reflection assisted method to aid real time computation of these parameters. One could select the wavlength of interest to optimize the temperature and layer thickness resolution. We present data on MBE grown quarter wavelength stacks of GaAs and AlAs, and silicon oxidation to show P1 is extremely useful for growth of surface emitting laser and for silicon processing.

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A Research on Remanufacturing Products Quality Control

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.314-316.2162 ◽

2011 ◽

Vol 314-316 ◽

pp. 2162-2167

Author(s):

Yun Liu ◽

Bin Shi Xu ◽

Pei Jing Shi ◽

Bo Hai Liu

Keyword(s):

Quality Control ◽

Process Control ◽

Production Process ◽

Control Chart ◽

Product Certification ◽

Low Volume ◽

Posterior Analysis

The quality of remanufacturing products, which is always restricting the development of remanufacturing industry, is one of sixty-four-dollar questions. By detecting the cores, process control in remanufacturing production and certificating remanufacturing products, quality control of remanufacturing products is studied. Because of cores different in original states, remanufacturing is in low-volume on the whole. Based on Bayesian posterior analysis, the paper improves the control chart and uses the previous data to monitor the production process. Finally, some advances are given to remanufacturing product certification.

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Rapid Prototyping Systems: Types, Case Studies, and Integration in a Mechanical Engineering Technology Program

Innovations in Engineering Education: Mechanical Engineering Education, Mechanical Engineering/Mechanical Engineering Technology Department Heads ◽

10.1115/imece2005-80478 ◽

2005 ◽

Author(s):

Mohammad S. Davoud

Keyword(s):

Rapid Prototyping ◽

Case Studies ◽

Mechanical Engineering ◽

Technology Curriculum ◽

Engineering Technology ◽

Time To Market ◽

Technology Program ◽

Development Costs ◽

Manufacturing Methods ◽

Traditional Manufacturing

This paper describes the current types and applications of rapid prototyping (RP) systems. The capabilities of various types of RP systems are outlined, as are the benefits these systems offer when compared to traditional manufacturing methods, case studies are presented to show how some companies have reduced development costs and time-to-market by implementing RP technology. Finally, it outlines a plan for implementation of a RP system in a Mechanical Engineering Technology curriculum.

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Rapid Prototyping and Low-volume Manufacture

Laser Material Processing ◽

10.1007/978-1-84996-062-5_8 ◽

2010 ◽

pp. 349-369 ◽

Cited By ~ 3

Author(s):

William M. Steen ◽

Jyotirmoy Mazumder

Keyword(s):

Rapid Prototyping ◽

Low Volume

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Negligible-cost microfluidic device fabrication using 3D-printed interconnecting channel scaffolds

PLoS ONE ◽

10.1371/journal.pone.0245206 ◽

2021 ◽

Vol 16 (2) ◽

pp. e0245206

Author(s):

Harry Felton ◽

Robert Hughes ◽

Andrea Diaz-Gaxiola

Keyword(s):

Rapid Prototyping ◽

Point Of Care ◽

Low Cost ◽

Microfluidic Channel ◽

Microfluidic Devices ◽

Device Fabrication ◽

Appropriate Technology ◽

Channel Cross Section ◽

Microfluidic Systems ◽

3D Printed

This paper reports a novel, negligible-cost and open-source process for the rapid prototyping of complex microfluidic devices in polydimethylsiloxane (PDMS) using 3D-printed interconnecting microchannel scaffolds. These single-extrusion scaffolds are designed with interconnecting ends and used to quickly configure complex microfluidic systems before being embedded in PDMS to produce an imprint of the microfluidic configuration. The scaffolds are printed using common Material Extrusion (MEX) 3D printers and the limits, cost & reliability of the process are evaluated. The limits of standard MEX 3D-printing with off-the-shelf printer modifications is shown to achieve a minimum channel cross-section of 100×100 μm. The paper also lays out a protocol for the rapid fabrication of low-cost microfluidic channel moulds from the thermoplastic 3D-printed scaffolds, allowing the manufacture of customisable microfluidic systems without specialist equipment. The morphology of the resulting PDMS microchannels fabricated with the method are characterised and, when applied directly to glass, without plasma surface treatment, are shown to efficiently operate within the typical working pressures of commercial microfluidic devices. The technique is further validated through the demonstration of 2 common microfluidic devices; a fluid-mixer demonstrating the effective interconnecting scaffold design, and a microsphere droplet generator. The minimal cost of manufacture means that a 5000-piece physical library of mix-and-match channel scaffolds (100 μm scale) can be printed for ~$0.50 and made available to researchers and educators who lack access to appropriate technology. This simple yet innovative approach dramatically lowers the threshold for research and education into microfluidics and will make possible the rapid prototyping of point-of-care lab-on-a-chip diagnostic technology that is truly affordable the world over.

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