Electroforming Versus Photochemical Machining

Posted by Shawn Martin on 6/14/16 11:12 AM

Both methods employ photolithography to fabricate nano-scale structures. But where one adds material to exposed surfaces, the other subtracts — with far different results.


For a very long time component makers have widely applied photolithography as the go-to technique for fabricating extremely small features. The tiny circuits in a computer chip are the most obvious example. One reason is simplicity.

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Topics: electroforming, photolithography

Why Additive Beats Subtractive in Ultra-Miniature Circuits

Posted by Shawn Martin on 6/11/14 11:07 AM

Sputtering and photolithography vs. chemical etching―the advantages are clear.

Device makers have a choice of whether to specify an additive or subtractive process for fabricating the micron-scale circuits used in their products. Knowing the basic differences between the two is important because choosing the right one can make a big difference in the whether a circuit will perform as required.

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Topics: photolithography