PDMS — LTCC lab on chip for photocatalytic effect analysis

The purpose of this research is to provide a tailor made tool for analysis of photocatalytic activity in quantum dot colloids (e.g. zinc oxide and titanium dioxide). It should be autonomous, easy and inexpensive to manufacture and use small quantities of analyte. A lab on chip device was developed using a hybrid polymer-ceramic technology for microreactor and inexpensive PCB (Printed Circuit Board) technology for electronic components. The spectrophotometric analysis was replaced with cheaper selective measurement using light emitting diodes (LEDs) and photodetectors. The device provides reliable absorbance measurement despite using simplified method. The expected photocatalytic effect is observable. Moreover, an unexpected photoluminescence phenomenon has probably been detected.