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Overview [PhoCam]


Fig.1: Digital Light Processing

Lithography based additive manufacturing technologies (AMT) are capable of fabricating parts with excellent surface quality, good feature resolution and precision. With recent developments in the field of ultra-short-pulse lasers and light engines based on light emitting diodes, robust and economical light sources have become available. This project aims at developing integrated lithography-based additive manufacturing systems which will, for the first time, facilitate the processing of photopolymer-based materials for the factory of the future. The focus of the project is to unite industrial know-how in the field of supply chain and quality management, software development, photopolymers and ceramics, high-performance light-sources, system integration and end-users in order to provide a fully integrated process chain at the end of the project. The consortium will rely on two core-technologies for the processing of the evisaged radiation curable materials:

(1) Digital light processing (DLP) based processes will be used to process ceramic-filled photopolymers, leading to fully dense ceramic parts at the end of the process chain.

(2) Two photon polymerization (2PP) will be used to fabricate high-resolution structures with features in the range of 100-200nm.

Both processes will be tuned to reduce system costs, and significantly increase throughput and reliability at the same time. Goal is to deliver “first-time-right” strategies for the involved end-users. This necessitates the development of supply chains with integrated quality sensors. Targeted applications include thread guides for textile machinery, ceramic moulds for the fabrication of high-performance turbine blades and microstructures for computer tomography equipment.

Fig.2: A selection of biomechanical parts made by 2PP. (a) Microvalve designed to prohibit the reversal of blood flow in human veins. Only part of the valve cover was built, to enable visualization of the interior. (b)Scanning electron microscope image of high-porosity tissue engineering scaffold. (c ) Test micro-needle array for transdermal drug delivery
start.txt · Last modified: 2010/11/15 10:47 (external edit)
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