  The combination of microfluidic technology and optical fluids
characterization techniques has been recently applied to produce lab-on-a-chip
systems. In the present work, bringing together the imaging technique called
photoacoustic imaging (PAI) and microfluidic technology were implemented to
obtain micro-scale imaging. Laser-induced ultrasound signals were measured from
microdroplets produced in a simple T-junction microfluidic system. Single pulse
laser images were produced as a result of the combination of the aforementioned
techniques, allowing to obtain of geometrical information of the microdroplets
and its spatial position.
