Inkjet printing as a fabrication method for hydrophobic surfaces

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Abstract:

Inkjet printing is an ideal manufacturing method for challenging applications. It is compatible with many kinds of fluids and substrates and it enables accurate deposition of non-conventional inks. This paper presents the use of inkjet printing to fabricate hydrophobic surfaces. Hydrophobic surfaces are needed for example in diagnostic applications for screening purposes, but also other uses can be found.

Inkjet printed hydrophobic surfaces have been demonstrated. Two different inks have been manufactured – one amorphous fluoropolymer (Teflon) and one polydimethylsiloxane (PDMS) based – and inkjet printed on a polystyrene substrate. The first ink produced a contact angle of approximately 116° and the second one 108° thus indicating a hydrophobic surface. Several methods were also tested to increase the contact angle to near 180°, but most likely the high solvent content in the inks prevented this.

Document Type: Research Article

Publication date: January 1, 2007

More about this publication?
  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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