Computer Science
Scientific paper
Jan 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994sci...263...60k&link_type=abstract
Science, Volume 263, Issue 5143, pp. 60-62
Computer Science
24
Scientific paper
Heterogeneous, patterned surfaces comprising well-defined hydrophobic and hydrophilic regions and having micrometer-scale periodicities were prepared by patterning the adsorption of ω-functionalized alkanethiolates in self-assembled monolayers (SAMs) on gold. Condensation of water on such surfaces resulted in drops that followed the patterns in the SAMs. These patterned condensation figures (CFs) acted as optical diffraction gratings for reflected (or transmitted) light from a helium-neon laser (wavelength of 632.8 nanometers). Under an atmosphere of constant relative humidity, the development of the condensation figure was monitored quantitatively, as the temperature of the surface was lowered, by following the change in intensity of a first-order diffraction spot. This experimental technique may be useful in the development of new types of optical sensors that respond to their environment by changing the reflectivity of patterned regions and for studying phenomena such as drop nucleation, contact angle hysteresis, and spontaneous dewetting and breakup of thin liquid films.
Kumar Amit
Whitesides George M.
No associations
LandOfFree
Patterned Condensation Figures as Optical Diffraction Gratings does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Patterned Condensation Figures as Optical Diffraction Gratings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Patterned Condensation Figures as Optical Diffraction Gratings will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1686272