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A Photoelectrochemical Method for Determining the Kinematics of Moving Particles Using an Array of Individually Addressable Electrodes
Author(s) -
Rees Neil V.,
Compton Richard G.
Publication year - 2009
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.200900126
Subject(s) - spheres , photocurrent , electrode , ball (mathematics) , kinematics , photoelectrochemistry , trajectory , optics , materials science , shadow (psychology) , physics , geometry , electrochemistry , classical mechanics , mathematics , psychology , quantum mechanics , astronomy , psychotherapist
We present the novel use of photoelectrochemistry to detect and monitor the trajectory of moving spheres. Using an array of individually addressable electrodes under illumination and potentiostatted so that a photocurrent is generated, the motion of a sphere is detected by means of measuring “dark” transients as the shadow cast by the moving sphere passes over each electrode. The method can used to determine the size and velocity of a single ball, or simultaneously track two spheres in collision.