Micro-Contact-Printing - The Process

  • First step: Inking (Wet or dry) of the PDMS stamp, the sample is to dispense on the ink slide. The dry ink option uses a PDMS coated ink slide for gentle inking of submicrometer structures
  • One of up to four stamps is picked up by µ-CP3.0
  • The deflected PDMS-stamp membrane goes in a convex shape
  • The convex stamp-membrane is positioned in the direction of the substrate to generate an initial bond contact between stamp and substrate
  • The convex stamp travels in µ-meter step resolution into the substrate direction to create the bond wave (Second part of the video)
  • The stamp motion finishes when the whole stamp-membrane gets in contact to the substrate. The pressure controlled stamp chamber and the homogeneous contact between stamp and substrate cause isostatic force effects that are given over the whole stamp, which is controlled using the pressure in the stamp chamber. This "roof collapse effect" ensures very accurate printing

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