Fast Optical pH Manipulation
and Imaging
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Abstract
We describe a complete system for optical pH manipulation
and imaging.
The system consists of a photoactive Ruthenium complex capable of
inducing a change of more than 5 pH units at the nanosecond time scale.
A compatible imaging system acquires microscopic pH images at 1200
fps using a nonexpensive commercial digital camera and an LED illumination
system. We use the system as a superb tool to investigate flow in
Flow Injection Analysis (FIA) models
