Accession Number:

ADA254887

Title:

Manipulation of the Wettability of Surfaces on the 0.1 to 1 Micrometer Scale Through Micromachining and Molecular Self-Assembly

Descriptive Note:

Interim rept.,

Corporate Author:

HARVARD UNIV CAMBRIDGE MA DEPT OF CHEMISTRY

Report Date:

1992-07-01

Pagination or Media Count:

17.0

Abstract:

Micromachining allows the formation of micrometer-sized regions of bare gold on the surface of a gold film supporting a self-assembled monolayer SAM of alkanethiolate. A second SAM forms on the micromachined surfaces on exposing the entire system--the remaining undisturbed gold-supported SAM and the micromachined features of bare gold--to a solution of dialkyldisulfide. By preparing an initial hydrophilic SAM from HS CH2 15COOH, micromachining features into this SAM, and covering these features with a hydrophobic SAM formed from CH3CH211S2, it is possible to construct micrometer-scale hydrophobic lines in a hydrophilic surface. These lines provide new structures with which to manipulate the shapes of liquid drops.

Subject Categories:

  • Inorganic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE