Title :
Micropatterning of Streptavidin-Functionalized Magnetic Beads on Glass using Electrostatic Self-Assembly
Author :
Sivagnanam, V. ; Sayan, A. ; Vandevyver, C. ; Gijs, M.A.M.
Author_Institution :
Ecole Polytech. Fed. de Lausanne, Lausanne
Abstract :
We demonstrate a simple and fast method for micropatterning streptavidin-functionalized magnetic beads on glass by combining conventional microfabrication techniques and electrostatic self- assembly. We create micropatterns of a positively-charged aminosilane on a glass surface using the lift-off technique and use them as templates for streptavidin-functionalized magnetic bead patterning through electrostatic self-assembly. Micropatterning of streptavidin-functionalized magnetic beads is realized over large surface areas (4 inch wafer area) with high reproducibility and in a very short processing time (~30 minutes).
Keywords :
electrostatic devices; magnetic devices; micromechanical devices; electrostatic self-assembly; glass surface; microfabrication techniques; micropatterning streptavidin-functionalized magnetic beads; positively-charged aminosilane; streptavidin-functionalized magnetic beads; Electrostatic self-assembly; Glass; Joining processes; Magnetic materials; Microelectronics; Micromagnetics; Permanent magnets; Reproducibility of results; Resists; Surface treatment; electrostatic self-assembly; magnetic beads; micropatterned beads; streptavidin;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems Conference, 2007. TRANSDUCERS 2007. International
Conference_Location :
Lyon
Print_ISBN :
1-4244-0841-5
DOI :
10.1109/SENSOR.2007.4300183
