Hydrophobic patterning

Handique K, Burke DT, Mastrangelo CH, Burns MA (2000) Nanoliter liquid metering in microchannels using hydrophobic patterns. Anal Chem 72 4100-4109... 

Liquid evaporation was employed for liquid pumping in Si-glass microchannels. With hydrophobic patterning at the outlet reservoir, the evaporation rate at the liquid meniscus was controlled to produce a flow rate of 5 nL/min. The hydro-phobic region was patterned by an A1 mask using a silane solution (FDTS) [146]. 

Keywords Adsorption Capillary forces Cationic surfactant Hydrophobizing Pattern collapse... 

Hydrophobicity is believed to play a major role in organizing the self-assembly of protein molecules. Patterns of hydrophobic versus hydrophilic side chains are very in predicting secondary and tertiary structure simply by virtue of their preferential occurrence on the inside versus outside of various structural features. Those hydrophobicity patterns... 

FIGURE 5.5.7 Schematic of stamp-and-spin-cast. Hydrophobic patterns are created by (a) pCP or (b) subtractively removing hydrophobic molecules by UV-ozone irradiation through a shadow mask. An aqueous PANl dispersion is spin-coated on the patterned substrate. PANl features selectively deposit in the hydrophilic regions immediately after the spin-coating. (From K. S. Lee et al., Appl. Phys. Lett., 86, 074102, 2005.)... 

Fig. 20 Multilayer deposition on a hydrophilically/hydrophobically patterned gold substrate. Upper AFM images height (left) and friction force (right) images of patterned methyl- and hydroxyl- alkanethiol self-assembled monolayers. Adsorption of poly(ferrocenylsilane) polyions (5/7, 12 bUayers) occms selectively on the broad methyl-terminated stripes (lower AFM images). Reprinted with permission from [94]. Copyright 2002, American Chemical Society...

Hydrophilic and Hydrophobic Patterning Surface-Tension-Driven Flow... 

Hydrophilic and Hydrophobic Patterning Microfluidics for Stem Cell Therapy... 

Electrowetting, Applications Hydrophilic and Hydrophobic Patterning Self-Assembled Monolayer... 

Since the next generation of immersion lithography will potentially require high index of refraction liquids, the dynamic performance of one such liquid, bicyclohexyl, was examined. First, wafer 4 was tested in the perpendicular direction because it was shown to have the most hydrophobic pattern with water. However, extremely... 

Photocatalytic systems based on the plasmon-induced charge separation can be used for oxidation of alcohols, aldehydes, and phenol [8, 13] mineralization of carboxylic acids [14] oxidation of benzene to phenol [15] release of hydrogen from alcohols and ammonia [16] and oxidation and reduction of water (but not water splitting) [17]. The photocatalytic system can also be applied to hydrophilic/hydrophobic patterning based on photocatalytic removal of a hydrophobic thiol adsorbed on metal nanoparticles [18]. 

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