Abstract
For realizing an opto-fluidic system without any mechanical moving part, opto-fluitlic controlling element using a photoacoustic cell as the control port of a laminar proportional amplifier was investigated. Carbon black was used as a light absorber of the photoacoustic cell.
Effects of incident light intensity, light modulating frequency, light aqsorber thickness, and cell length on photoacoustic pressure amplitude are clarified. Conversion characteristics of the opto-fluidic converter employing the opto-fluidic controlling element, a laminar proportional amplifier gain block and a rectifier are also reported.
