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. Author manuscript; available in PMC: 2022 Feb 8.
Published in final edited form as: J Chromatogr A. 2021 Jan 8;1638:461892. doi: 10.1016/j.chroma.2021.461892

Figure 3.

Figure 3.

(A) Water contact angle of COC 5010 measured at different UV/O3 exposure times using a power density of 22 mW/cm2. The data points named as with cover plate were obtained by keeping a cover plate on top of the substrate and then exposing it with UV/O3 through the cover plate. After exposure, the contact angle of the underlying substrate was measured by removing the cover plate, which was not thermally bonded to the underlying substrate. (B) EOF mobility of COC/COC nanochannel devices as a function of UV/O3 exposure time. The dimensions of the nanochannels were 110 nm x 110 nm (depth x width). The substrate was COC 5010 that was sealed with a COC 8007 cover plate. The UV/O3 activation was done through the cover plate following device assembly. Error bars represent the standard deviations (n = 5).