ABSTRACT: This work presents a novel and facile method
for fabricating paper-based microfluidic devices by means of
coupling of hydrophobic silane to paper fibers followed by
deep UV-lithography. After filter paper being simply immersed
in an octadecyltrichlorosilane (OTS) solution in n-hexane for
5 min, the hydrophilic paper became highly hydrophobic
(water contact angle of about 125°)