Mold free and additive embedding of quasi-spatial filter (QSF) for simple optical detection was proposed. With a conceptof “silicone optical technology (SOT)” we proposed, fully flexible and digitally fabrication of compact optical module forflow-injection analysis (FIA) was demonstrated. It was attained by combining silicone 3D printed rough-frame andinjecting & coating method for embedding SOT-QSF that can trap unexpected light signal as tilted incidence. SOT-QSF’scoaxial cylindrical structure of PDMS core and carbon-dispersed-PDMS clad was fabricated by injecting and coatingmethod. The coating properties and optical trapping performance was evaluated. These embedding technique and methoddevelopmentwill be useful for on-site applications with general FIA researches and for rapid on-demand-fabrication basedon researcher’s idea.
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