Large-scale parallel surface functionalization of goblet-type whispering gallery mode microcavity arrays for biosensing applications

Abstract

A novel surface functionalization technique is presented for large-scale selective molecule deposition onto whispering gallery mode microgoblet cavities. The parallel technique allows damage-free individual functionalization of the cavities, arranged on-chip in densely packaged arrays. As the stamp pad a glass slide is utilized, bearing phospholipids with different functional head groups. Coated microcavities are characterized and demonstrated as biosensors.

Keywords: aligned microcontact stamping; biosensing; microlasers; multiplexed surface functionalization; whispering gallery mode resonators.