Journal ArticleDOI
Features of gold having micrometer to centimeter dimensions can be formed through a combination of stamping with an elastomeric stamp and an alkanethiol ‘‘ink’’ followed by chemical etching
Amit Kumar,George M. Whitesides +1 more
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TLDR
In this paper, a technique for patterning a self-assembled monolayer (SAM) on a gold substrate using an elastomer stamp was described, followed by selective etching in an aqueous, basic solution of cyanide ion and dissolved dioxygen (1M KOH, 0.1 M KCN).Abstract:
This letter describes a technique that can be used to produce well‐defined features of gold. The technique involves patterning of a self‐assembled monolayer (SAM) on a gold substrate using an elastomer stamp (fabricated either from a phenol‐formaldehyde polymer or polydimethylsiloxane), followed by selective etching in an aqueous, basic solution of cyanide ion and dissolved dioxygen (1M KOH, 0.1 M KCN). Electrically conductive structures of gold with dimensions as small as 1 μm have been produced using this procedure. Once a rubber stamp is fabricated, patterning and etching of gold substrates is straightforward. This method is convenient, does not require routine access to clean rooms and photolithographic equipment, and can be used to produce multiple copies of a pattern.read more
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Control of antigen mass transfer via capture substrate rotation: an absolute method for the determination of viral pathogen concentration and reduction of heterogeneous immunoassay incubation times.
Jeremy D. Driskell,Karen M. Kwarta,Robert J. Lipert,Ann Vorwald,John D. Neill,Julia F. Ridpath,Marc D. Porter +6 more
TL;DR: The use of rotating capture substrates to increase the flux of antigen to the surface, thereby reducing the incubation time is examined, and results are presented that show this strategy can be used to determine antigen concentrations without standards and establish the numerical relationship between quantal concentration units.
Journal ArticleDOI
Interface interaction controlled transport of CdTe nanoparticles in the microcontact printing process.
TL;DR: High-quality CdTe nanoparticles stabilized with thioglycolic acid (TGA) are patterned on SiO2/Si surfaces using microcontact printing (microCP), and new structures such as nanowires form under certain conditions.
Journal ArticleDOI
Preparation of Hydroxy-PAAm Hydrogels for Decoupling the Effects of Mechanotransduction Cues
TL;DR: A detailed experimental protocol to rapidly and easily generate biologically relevant hydrogels for the independent tuning of mechanotransduction cues in vitro is presented and a novel PAAm hydrogel, called hydroxy-PAAm, is obtained, which permits immobilization of any desired nature of ECM proteins.
Journal ArticleDOI
Rapid and convenient method for preparing masters for microcontact printing with 1–12 μm features
Lloyd W. Zilch,Ghaleb A. Husseini,Yit Yian Lua,Michael V. Lee,Kevin R. Gertsch,Bennion R. Cannon,Robert M. Perry,Eric T. Sevy,Matthew C. Asplund,Adam T. Woolley,Matthew R. Linford +10 more
TL;DR: In this paper, replica molding elastomeric copies of these scribed surfaces are created that function as stamps for microcontact printing, making this method particularly straightforward and accessible to a large technical community that does not need to work in a particle free environment.
Journal ArticleDOI
Self-aligned patterns of multiple biomolecules printed in one step
TL;DR: An adaptation of the microcontact printing technique for generating self-aligned patterns of two different molecules in one printing step is described and the fabrication of 1 μm wide biomolecular patterns aligned into 5 μm wide patterns of another biomolecule is demonstrated.
References
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Book
Advanced Inorganic Chemistry
TL;DR: Cotton and Wilkinson's Advanced Inorganic Chemistry (AIC) as discussed by the authors is one of the most widely used inorganic chemistry books and has been used for more than a quarter century.
Journal ArticleDOI
The use of self-assembled monolayers and a selective etch to generate patterned gold features
TL;DR: Using a number of techniques, such as micromachining, microwriting, electron-beam lithography, ion-beam, and ion beam, it is possible to form patterns of SAMs on the Au surface.