Surface Modification of Integrated Optical MZI Sensor Arrays Using Inkjet Printing Technology. (2016)

• Record Type: Journal Article
• Authors: Melnik, Eva; Strasser, Florian; Muellner, Paul; Heer, Rudolf; Mutinati, Giorgio C.; Koppitsch, Guenther; Lieberzeit, Peter; Laemmerhofer, Michael; Hainberger, Rainer
• Is Part Of: Procedia engineering. Volume 168(2016)
• Page Start: 337
• Page End: 340
• Publication Date: 2016
• Subjects: photonic senensors -- hydrogel -- polymers -- inkjet printing -- surface modification; Engineering -- Congresses; Engineering -- Periodicals; Engineering; Conference proceedings; Periodicals; 620.005
• DOI: 10.1016/j.proeng.2016.11.113
• Languages: English
• ISSNs: 1877-7058

Abstract

Abstract: In order to enable local functionalisation of label-free optical waveguide biosensors in a cost effective mass-fabrication compatible manner, we investigate surface modification employing inkjet printing of a) functional polymers (biotin-modified polyethyleneimine (PEI-B)) to implement high receptor densities at the surface and b) UV-curable benzophenone dextran (benzo-dextran) to form a voluminous porous hydrogel matrix. The combination of these approaches on a single chip is promising for the detection of biomolecules. We evaluate these functional polymers and hydrogels on an integrated four-channel silicon nitride (Si3 N4 ) waveguide based Mach-Zehnder interferometric (MZI) sensor platform operating at a wavelength of 850nm (TM-Mode).