Optical microsensor for counting food substance particles in lab-on-a-chips
Dixon, A. J., Kouzani, A. Z., Kaynak, A. and Sexton, B. A. 2009, Optical microsensor for counting food substance particles in lab-on-a-chips, in Proceedings of the IEEE International Conference on Systems, Man and Cybernetics, IEEE, New York, N. Y., pp. 4628-4633.
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Integrated optical detection is considered to be an important operation in lab-on-a-chips. This paper presents an optical fiber-based micro-sensor that is capable of detecting food substance particles in a lab-on-a-chip. The system consists of a microcontroller and associated circuitry, a laser emitter, a laser receiver, fiber optic cables, a microfluidics chip, and the food substance samples to be tested. When the particles flow through the microfluidic channel in the chip, the receiver’s output voltage varies due to the particles blocking the passage of the laser ray. The changes in the collected signals are analyzed to count the number of particles. Experiments are conducted on several food substance samples including talcum powder, ground ginger, and soy sauce. The experimental results are presented and discussed.
Field of Research
090699 Electrical and Electronic Engineering not elsewhere classified 090605 Photodetectors, Optical Sensors and Solar Cells 030107 Sensor Technology (Chemical aspects)
Socio Economic Objective
860199 Processed Food Products and Beverages (excl. Dairy Products) not elsewhere classified
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