Effect of the Refractive Index of Buffer Solutions in Evanescent Optical Biosensors
Evanescent field optical biosensors are label free sensors that measure the variation of the refractive index of the adsorbed layer onto a chip surface and translate this variation into surface concentration of the adsorbed molecule. The evanescent field based techniques depend on a theoretical model of the waveguide to determine the desired parameters of the adsorbed layer. As this layer is not only composed by the biomolecules, but also by some amount of the buffer solution, in this study, we have developed a new calibration method to take into account the refractive index buffer changes. We report a new methodology to characterize each sensor chip before the measurements and we present the refractive indexes of different buffer solutions considering the most common ones used in biosensor applications. This work will set the calibration bases for any optical grating biosensor instrument.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
Document Type: Research Article
Publication date: October 1, 2009
More about this publication?
- The growing interest and activity in the field of sensor technologies requires a forum for rapid dissemination of important results: Sensor Letters is that forum. Sensor Letters offers scientists, engineers and medical experts timely, peer-reviewed research on sensor science and technology of the highest quality. Sensor Letters publish original rapid communications, full papers and timely state-of-the-art reviews encompassing the fundamental and applied research on sensor science and technology in all fields of science, engineering, and medicine. Highest priority will be given to short communications reporting important new scientific and technological findings.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Terms & Conditions
- Ingenta Connect is not responsible for the content or availability of external websites