We introduce for the first time the implementation of optofluidic lock-in spectroscopy of sub-nanoliter analyte on a microfluidic chip. Two methods, spatial modulation and pneumatic modulation with integrated optofluidic modulator, were demonstrated. (C) 2009 Optical Society of America
Martinus Gijs, Thomas Lehnert, Lin Sun
Christoph Merten, Jatin Panwar
Davide Ferri, Oliver Kröcher, Rob Jeremiah G. Nuguid