Nanofluidics is the study of phenomena involving fluid motion in channels or around structures measuring less than 100 nm in at least one dimension. At this scale, the physics and chemistry at the interface of the fluid and the nanochannel surface play a very important role. In this study, we are specifically interested in the patterned grafting of charged moieties onto nanochannel walls to fabricate nanofluidic diodes, transistors and logic circuits. Surface patterning of the nanochannels will be accomplished through photochemical reactions of alkenes with grafted surface thiols. Two different alkenes will be grafted in sequence, one bearing a positive charge and the other a negative charge. Masks will be employed during the photochemical reaction for the patterned grafting of charged moieties. After fabrication, the performance of the devices will be evaluated through conductivity measurements at different experimental conditions.

Photochemical patterning of surface charges in fluidic channels

254th National Meeting (2017)

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