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Patterned Functional Arrays by Selective De-Wetting

Published online by Cambridge University Press:  01 February 2011

Hongyou Fan ,
Dhaval Doshi ,
Yunfeng Lu ,
Gabriel P. Lopez  and
C. Jeffrey Brinker
Hongyou Fan
Affiliation:
The University of New Mexico/NSF Center for Micro-Engineered Materials, The Advanced Materials Laboratory, 1001 University Blvd, NM 87106, Sandia National Laboratories, Albuquerque, NM 87185.
Dhaval Doshi
Affiliation:
The University of New Mexico/NSF Center for Micro-Engineered Materials, The Advanced Materials Laboratory, 1001 University Blvd, NM 87106, Sandia National Laboratories, Albuquerque, NM 87185.
Yunfeng Lu
Affiliation:
The University of New Mexico/NSF Center for Micro-Engineered Materials, The Advanced Materials Laboratory, 1001 University Blvd, NM 87106, Sandia National Laboratories, Albuquerque, NM 87185.
Gabriel P. Lopez
Affiliation:
The University of New Mexico/NSF Center for Micro-Engineered Materials, The Advanced Materials Laboratory, 1001 University Blvd, NM 87106, Sandia National Laboratories, Albuquerque, NM 87185.
C. Jeffrey Brinker
Affiliation:
The University of New Mexico/NSF Center for Micro-Engineered Materials, The Advanced Materials Laboratory, 1001 University Blvd, NM 87106, Sandia National Laboratories, Albuquerque, NM 87185.
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Abstract

Using a micro-Contact Printing (μ-CP) technique, substrates are prepared with patterns of hydrophilic, hydroxyl-terminated SAMs and hydrophobic methyl-terminated SAMs. Beginning with a homogeneous solution of silica, surfactant, ethanol, water, and functional silane, preferential ethanol evaporation during dip-coating, causes water enrichment and selective de-wetting of the hydrophobic SAMs. Correspondingly, film deposition occurs exclusively on the patterned hydrophilic SAMs. In addition, by co-condensation of tetrafunctional silanes (Si(OR)4) with tri-functional organosilanes ((RO)3Si(CH2)3NH2), we have selectively derived the silica framework with functional amine NH2 groups. A pH sensitive, micro-fluidic system was formed by further conjugation reactions with pH sensitive dye molecules.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 628: Symposium CC – Hybrid Organic/Inorganic Materials , 2000 , CC6.33
Copyright
Copyright © Materials Research Society 2000

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References

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