Metrigraphics' new family of coils is classified by two groups --
single- and multiple-layer forms. Single layer multiple-turn electroformed
coils are available in a variety of sizes, both in round and square
configurations for ease of fit into specific applications. Multi-layer
coils offer greater field density for more high-end applications. Based on
Metrigraphics unmatched precision manufacturing technology, the new coils
provide the following advantages over traditional offerings:
* The materials will not react with body fluids, thereby reducing any
potentially harmful effects.
* The production process yields high volumes of coils per sheet produced.
* The induction coils permit passive devices, with power being obtained
through induction only when required. This feature eliminates the need
for internal batteries.
* The elimination of control and power wires being passed through the
The new micro-induction coils are also available in a variety of
substrates. The coils are produced using electroformed nickel cobalt
over-plated with pure gold, or with hard gold depending on the application.
Coils can also be produced using copper. The process starts with a
photolithographic image of the desired shape in photo resist, and then
either electroplated for a thicker coil material, or sputtered for
extremely fine coils. Individual traces can be fabricated as small as three
microns, but more typically in the five- to ten-micron range, with metal
thicknesses equal to the trace width. Aspect ratios of 2.5 to 1 are also
being fabricated and higher ratios are possible. Current samples have been
fabricated on glass for ease of handling, but other substrates are possible
and include silicon, alumina, cast polyimide and other sheet materials for
|SOURCE Dynamics Research Corporation|
Copyright©2008 PR Newswire.
All rights reserved