A new UV-curing elastomeric substrate for rapid prototyping of microfluidic devices

Jafar Alvankarian, Burhanuddin Yeop Majlis

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Rapid prototyping in the design cycle of new microfluidic devices is very important for shortening time-to-market. Researchers are facing the challenge to explore new and suitable substrates with simple and efficient microfabrication techniques. In this paper, we introduce and characterize a UV-curing elastomeric polyurethane methacrylate (PUMA) for rapid prototyping of microfluidic devices. The swelling and solubility of PUMA in different chemicals is determined. Time-dependent measurements of water contact angle show that the native PUMA is hydrophilic without surface treatment. The current monitoring method is used for measurement of the electroosmotic flow mobility in the microchannels made from PUMA. The optical, physical, thermal and mechanical properties of PUMA are evaluated. The UV-lithography and molding process is used for making micropillars and deep channel microfluidic structures integrated to the supporting base layer. Spin coating is characterized for producing different layer thicknesses of PUMA resin. A device is fabricated and tested for examining the strength of different bonding techniques such as conformal, corona treating and semi-curing of two PUMA layers in microfluidic application and the results show that the bonding strengths are comparable to that of PDMS. We also report fabrication and testing of a three-layer multi inlet/outlet microfluidic device including a very effective fluidic interconnect for application demonstration of PUMA as a promising new substrate. A simple micro-device is developed and employed for observing the pressure deflection of membrane made from PUMA as a very effective elastomeric valve in microfluidic devices.

Original languageEnglish
Article number035006
JournalJournal of Micromechanics and Microengineering
Volume22
Issue number3
DOIs
Publication statusPublished - Mar 2012

Fingerprint

Polyurethanes
Methacrylates
Rapid prototyping
Microfluidics
Curing
Substrates
elastomeric
Microfabrication
Spin coating
Fluidics
Microchannels
Molding
Lithography
Contact angle
Swelling
Surface treatment
Demonstrations
Thermodynamic properties
Resins
Optical properties

ASJC Scopus subject areas

  • Mechanical Engineering
  • Electrical and Electronic Engineering
  • Mechanics of Materials
  • Electronic, Optical and Magnetic Materials

Cite this

A new UV-curing elastomeric substrate for rapid prototyping of microfluidic devices. / Alvankarian, Jafar; Yeop Majlis, Burhanuddin.

In: Journal of Micromechanics and Microengineering, Vol. 22, No. 3, 035006, 03.2012.

Research output: Contribution to journalArticle

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