Article

High-fidelity chemical patterning on oxide-free germanium.

California NanoSystems Institute and Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA.
Journal of Physics Condensed Matter (impact factor: 2.55). 04/2012; 24(16):164214. DOI:10.1088/0953-8984/24/16/164214 pp.164214
Source: PubMed

ABSTRACT Oxide-free germanium can be chemically patterned directly with self-assembled monolayers of n-alkanethiols via submerged microcontact printing. Native germanium dioxide is water soluble; immersion activates the germanium surface for self-assembly by stripping the oxide. Water additionally provides an effective diffusion barrier that prevents undesired ink transport. Patterns are stable with respect to molecular exchange by carboxyl-functionalized thiols.

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Keywords

effective diffusion barrier
 
molecular exchange
 
n-alkanethiols
 
Native germanium dioxide
 
oxide
 
Oxide-free germanium