Disposable point-of-use optical biosensor for multiple biomarker detection

This work explored the viability of a new miniaturized fluorescence measurement-based sensor architecture using organic light emitting diode (OLED) display and photodiode active matrix array technology for point-of-use diagnosis of multiple disease biomarkers in a low cost disposable configuration. Sensor feasibility and optical performance were evaluated using a bright 0.3mW/mm² 2 × 2 mm, 455nm blue OLED emitter test structure configured first with orthogonally crossed linear polarizing film; and second, with band-pass and long-pass optical filters. Preliminary measurement results indicated that this type of sensor architecture requires optical filters to approach the sensitivity of laboratory fluorescence-based instrumentation.