An improved optical method for surface plasmon resonance experiments

Lenferink, A.T.M. and Kooyman, R.P.H. and Greve, J. (1991) An improved optical method for surface plasmon resonance experiments. Sensors and Actuators B: Chemical, 3 (4). pp. 261-265. ISSN 0925-4005

Preview

PDF
398Kb

Abstract:	In this paper an inexpensive optical device is described, which is capable of measuring the optical reflectance at different angles, while keeping the laser spot stationary at one point of the surface. This is accomplished by applying cylindrical optics. Its use is demonstrated in a surface plasmon resonance (SPR) sensor. A coil-operated vibrating mirror is used to obtain an angle scan of about 4 degrees. The angle of minimum reflectance can be detected with an accuracy of approximately 2 × 10−3 degrees. Despite the use of simple optical components, disturbance of laser beam parallelism is no more than 0.02 degrees. Displacement of the laser spot at the surface during the angle scan is kept within 0.2 mm. The device eliminates disturbances due to surface irregularities in measurements.
Item Type:	Article
Copyright:	© 1991 Elsevier
Faculty:	Science and Technology (TNW)
Research Group:	Nano-Biophysics (NBP)
Link to this item:	http://purl.utwente.nl/publications/72669
Official URL:	http://dx.doi.org/10.1016/0925-4005(91)80015-C
Export this item as:	BibTeX EndNote HTML Citation Reference Manager

Show download statistics for this publication

Repository Staff Only: item control page

Metis ID: 129485