Fabrication of narrow pitch grating for optical communication has been optimized using Near Field Holographic technique. Grating phase mask with pitch period of 240 nm has been used to produce grating patterns in photo resist on Si substrates using the i-line of a conventional mercury lamp as exposure light. Control of duty cycle and uniformity of the nearfield holographic gratings have been de...

A novel laser beam guided patterning technique for deposition of nanoparticle clusters of various materials on movable substrates and fabrication of microstructures is described. An example of the technique’s application, the fabrication of gold microstrips of under 100-150 μm in width, is discussed. Microstrip patterning is achieved by making use of gold thiolate nanoparticles (7-20 nm). The e...

implant-supported craniofacial prostheses are made to restore defective areas in the face and cranium. this clinical report describes a technique for fabrication of an orbital prosthesis with three adjacent implants in the left lateral orbital rim of a 60-year-old woman. selection of appropriate attachment system (individual magnetic abutments versus bar-clip attachment) for implant-supported o...

Traditional fabrication techniques include pick-and-place, roll-to-roll, molding, patterning and more. Current research in fabrication includes algorithmic assembly [3] , programmed assembly[9], self-assembly[1,2] , assembly by folding [4] as well as guided self-assembly [2]. The above research studies the methods of assembly rather than the nature of the materials they are using for assembly. ...

In this paper we report a novel fabrication technique for silicon photonic waveguides with sub-micron dimensions. The technique is based upon the Local Oxidation of Silicon (LOCOS) process widely utilised in the fabrication of microelectronics components. This approach enables waveguides to be fabricated with oxide sidewalls with minimal roughness at the silicon/SiO2 interface. It is also suffi...

We demonstrate a simple process for the fabrication of rigid plastic master molds for soft lithography directly from (poly)dimethysiloxane devices. Plastics masters (PMs) provide a cost-effective alternative to silicon-based masters and can be easily replicated without the need for cleanroom facilities. We have successfully demonstrated the use of plastics micromolding to generate both single a...

We report a technique for fabricating metallic electrodes on insulating substrates with separations on the 1 nm scale. The fabrication technique, which combines lithographic and electrochemical methods, provides atomic resolution without requiring sophisticated instrumentation. The process is simple, controllable, reversible, and robust, allowing rapid fabrication of electrode pairs with high y...

Designing for the freeform fabrication of heterogeneous tissue scaffold is always a challenge in Computer Aided Tissue Engineering. The difficulties stem from two major sources: 1) limitations in current CAD systems to assembly unit cells as building blocks to form complex tissue scaffolds, and 2) the inability to generate tool paths for freeform fabrication of unit cell assemblies. To overcome...