Integrating biosensors and drug delivery: A step closer toward scalable responsive drug-delivery systems

Han Kuan Anthony Tsai, Elizabeth A. Moschou, Sylvia Daunert, Marc Madou, Lawrence Kulinsky

Research output: Contribution to journalArticle

34 Scopus citations


The integration of a biosensor for glucose employing glucose oxidase immobilized on a hydrogel contained with microfabricated vials of a device, was studied. The drug delivery system can be manufactured in two parts, universal substrate and individually controllers drug release valves. The molded PDMS reservoir with dimensions of 17.8mm × 12.7mm × 0.5mm was filled with insulin and sealed to silicon substrate. The substrate for the drug-delivery device was produced from a single-crystal silicon wafer covered with a 200nm thick silicon dioxide through plasma enhanced chemical vapor deposition (PECVD) process. The study demonstrated the possibility of both independent sensing and drug delivery from the microwaves. The experiment resulted the increase in sensitivity of biosensor's to glucose with a dynamic linear response, suitable for use in hypoglycemic as well as hyperglycemic conditions.

Original languageEnglish (US)
Pages (from-to)656-660
Number of pages5
JournalAdvanced Materials
Issue number6
StatePublished - Feb 9 2009


ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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