  In this work, all-silicon, integrated optofluidic platforms, fabricated by
electrochemical micromachining technology, making use of vertical,
one-dimensional high-aspect- ratio photonic crystals for flow-through
(bio)sensing applications are reviewed. The potential of such platforms for
point-of-care applications is discussed for both pressure-driven and
capillarity- driven operations with reference to refractometry and biochemical
sensing.
