Delivering the third dimension: There is nothing like seeing models as they really are in 3D, especially when they are based on real world objects

Article Abstract:

It has become easier to design in true stereoscopic 3D with a new concept that removes the need for headset or glasses. The new system involves holographic technology coupled to an LCD screen, and was developed by David Trayner and Edwina Orr, directors of RealityVision. The holographic element directs light from a light source and two diffusers direct light from alternate screen pixel lines to the left eye, and light from the interlacing pixel lines to the right eye.

Design and construction, Three-dimensional display systems, Three dimensional displays, Holography

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Deformable structures allow hot mismatching

Article Abstract:

GEC Alsthom's Engineering Research Centre, Stafford, England is developing a metal/ceramic bonding process that withstands temperatures over 800 degrees centigrade. A flexible interlayer between the two surfaces allows differential heating and cooling. Existing bonding processes using silver copper alloys are inadequate for high temperatures. Further research will examine the use of nickel-based braze alloy processes.

Research, Ceramic to metal bonding, GEC Alsthom

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Micropumps and valves offer big impact: tiny, electrically driven pumps and valves are being developed with useful flows and pressure capabilities for a wide range of potential applications

Article Abstract:

A prototype microvalve using an internal piezoelectric actuator which pushes a hollow struct on the opposite side of a membrane has been developed by the Graunhofer Institutes in Germany. It has the ability to pump in one direction when driven at up to 800 Hz or in the reverse direction when driven at 2Khz to 6kHz. Applications include miniature, portable chemical analysers for military use.

Valves

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