Next Article in Journal
Microfabricated Electrochemical Cell-Based Biosensors for Analysis of Living Cells In Vitro
Previous Article in Journal
Enzyme-Gelatin Electrochemical Biosensors: Scaling Down
Biosensors 2012, 2(2), 114-126; doi:10.3390/bios2020114
Article

Optical Gratings Coated with Thin Si3N4 Layer for Efficient Immunosensing by Optical Waveguide Lightmode Spectroscopy

1,2,†,* , 1,2,3,‡
, 4
, 1
, 2,3
 and 1,2,3
Received: 1 February 2012; in revised form: 14 March 2012 / Accepted: 5 April 2012 / Published: 10 April 2012
View Full-Text   |   Download PDF [573 KB, uploaded 10 April 2012]   |   Browse Figures
Abstract: New silicon nitride coated optical gratings were tested by means of Optical Waveguide Lightmode Spectroscopy (OWLS). A thin layer of 10 nm of transparent silicon nitride was deposited on commercial optical gratings by means of sputtering. The quality of the layer was tested by x-ray photoelectron spectroscopy and atomic force microscopy. As a proof of concept, the sensors were successfully tested with OWLS by monitoring the concentration dependence on the detection of an antibody-protein pair. The potential of the Si3N4 as functional layer in a real-time biosensor opens new ways for the integration of optical waveguides with microelectronics.
Keywords: silicon nitride; optical gratings; waveguide; biosensor silicon nitride; optical gratings; waveguide; biosensor
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Export to BibTeX |
EndNote


MDPI and ACS Style

Diéguez, L.; Caballero, D.; Calderer, J.; Moreno, M.; Martínez, E.; Samitier, J. Optical Gratings Coated with Thin Si3N4 Layer for Efficient Immunosensing by Optical Waveguide Lightmode Spectroscopy. Biosensors 2012, 2, 114-126.

AMA Style

Diéguez L, Caballero D, Calderer J, Moreno M, Martínez E, Samitier J. Optical Gratings Coated with Thin Si3N4 Layer for Efficient Immunosensing by Optical Waveguide Lightmode Spectroscopy. Biosensors. 2012; 2(2):114-126.

Chicago/Turabian Style

Diéguez, Lorena; Caballero, David; Calderer, Josep; Moreno, Mauricio; Martínez, Elena; Samitier, Josep. 2012. "Optical Gratings Coated with Thin Si3N4 Layer for Efficient Immunosensing by Optical Waveguide Lightmode Spectroscopy." Biosensors 2, no. 2: 114-126.


Biosensors EISSN 2079-6374 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert