New 'stamping' process to pattern biomolecules at high resolution developed

Researchers have used rubber stamps to pattern biomolecules in a new way. Instead of using molecular "inks" transferred from the stamps to substrates, the new method removes molecules already in place on the surface, by having them react with the stamp surface. In the new "subtractive" printing process, the rubber stamps selectively remove patterns from molecular monolayers with much higher pattern fidelity than with conventional soft lithography and can be used over and over again.

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