Optofluidic Approaches for Enhanced Microsensor Performances

Abstract

Optofluidics is a relatively young research field able to create a tight synergy between optics and micro/nano-fluidics. The high level of integration between fluidic and optical elements achievable by means of optofluidic approaches makes it possible to realize an innovative class of sensors, which have been demonstrated to have an improved sensitivity, adaptability and compactness. Many developments in this field have been made in the last years thanks to the availability of a new class of low cost materials and new technologies. This review describes the Italian state of art on optofluidic devices for sensing applications and offers a perspective for further future advances. We introduce the optofluidic concept and describe the advantages of merging photonic and fluidic elements, focusing on sensor developments for both environmental and biomedical monitoring.

Keywords

• optofluidics
• sensors
• microfluidic
• ring resonator
• Mach-Zehnder
• liquid core waveguides
• lab-on-a-chip (LOC)
• micro total analysis systems (µTAS)