Llobera A., Wilke R., Büttgenbach S.
Institut für Mikrotechnik, DE
Keywords: laser induced fluorescence, micro total analysis systems, optical detection
A new robust and compact system, which comprises a PDMS-based hollow Abbe prism and microlenses, together with self-alignment channels for optical fibre positioning, is presented. This optical detection method has two different regimes for signal transduction, namely absorption and refractive index shift. µM concentrations of fluorescein are detected with this system using standard equipment (SLED and photodetector). The results clearly show the regions in which each physical effect is significant.
Journal: TechConnect Briefs
Volume: 1, Technical Proceedings of the 2004 NSTI Nanotechnology Conference and Trade Show, Volume 1
Published: March 7, 2004
Pages: 390 - 393
Industry sectors: Advanced Materials & Manufacturing | Sensors, MEMS, Electronics
Topic: MEMS & NEMS Devices, Modeling & Applications
ISBN: 0-9728422-7-6