The current ways of finding a substance’s concentration in a solution are time-consuming,
difficult to access, and quite expensive. In this project, we have begun to use
ultrasensitive colorimetric plasmonic sensing technologies to develop a mobile-based
colorimetric-sensing system that would allow a cost-effective method of concentration
detection in any location with a working mobile device.
Ultimately, detections would only require placing a drop of solution on the
plasmonic sensor. By shining a high-intensity light through the semi-transparent sensor,
the mobile device can capture the refraction color from the solution. By image analysis
and interpolations, the system is able to calculate the concentration of the substance within
the solution. Above all, this research produces a high-yield, high-portability, and low-cost
solution which is a suitable immediate application of the ultrasensitive colorimetric
plasmonic sensing technique.
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