Nanofluidic Channels in Photopolymer Materials: Fabrication, Surface Charge, Wetting, Fouling and Transport

Nanofluidic channels in photopolymer materials operate in a regime where channel dimensions, wall chemistry and electrical double layers jointly control transport. This review focuses on fabrication, surface charge, wetting, fouling and ionic/molecular transport rather than treating a nanochannel as a scaled microchannel. General printed-microfluidics literature defines additive fabrication constraints, while dedicated nanofluidic work shows that surface charge and electroosmotic flow become primary state variables under strong confinement. Qualification therefore requires channel-size and continuity metrology, wall-surface characterisation, ionic conductance or electroosmotic measurements, wetting/adsorption controls and stability under the intended electrolyte. The framework distinguishes geometric occlusion from charge-driven transport changes and from fouling, because all three can reduce flow or conductance. A transport model should be tested against measured channel and surface state rather than fitted to an unknown effective geometry.

ER-340 · Version 0.4.