Simultaneous Printing of Two Inks by Contact Lithography

David Moore, Ravi F. Saraf

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Microcontact printing (μCP) is a valuable technique used to fabricate complex patterns on surfaces for applications such as sensors, cell seeding, self-assembled monolayers of proteins and nanoparticles, and micromachining. The process is very precise but is typically confined to depositing a single type of ink per print, which limits the complexity of using multifunctionality patterns. Here we describe a process by which two inks are printed concomitantly in a single operation to create an alternating pattern of hydrophobic and hydrophilic characteristics. The hydrophobic ink, PDMS, is deposited by evaporation on the noncontact region, while the hydrophilic polyelectrolyte is transferred on contact. We demonstrate that there is no gap between the two patterns using an optical-electrochemical method. We describe some potential applications of this method, including layer-by-layer deposition of polyelectrolytes for sensors and creation of a scaffold for cell culture.

Original languageEnglish (US)
Pages (from-to)14193-14199
Number of pages7
JournalACS Applied Materials and Interfaces
Volume10
Issue number16
DOIs
StatePublished - Apr 25 2018

Keywords

  • cell culture
  • microcontact printing
  • noncontact printing
  • soft lithography
  • surface patterning
  • wetting modulation

ASJC Scopus subject areas

  • Materials Science(all)

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