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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Lithographic Processes for the Scalable Fabrication of Micro- and Nanostructures for Biochips and Biosensors
TL;DR: In this paper, the authors present a review of the lithographic methods that are capable of large-scale and mass fabrication of biochips and biosensors, including those allowing patterning of large areas from 10 cm2 to m2, maintaining cost effectiveness, high throughput (>100 cm2 h-1), high resolution (from micrometer down to nanometer scale), accuracy, and reproducibility.
Journal ArticleDOI
Subpattern formation during condensation processes on structured substrates
TL;DR: In this paper, the authors investigate the temporal and spatial development of condensation patterns on chemically patterned substrates and find that droplets condense preferentially on lyophilic sites and are surrounded by a depletion zone where no further nucleation occurs.
Journal ArticleDOI
Surface Chemical Reactions Probed with Scanning Force Microscopy
TL;DR: In this paper, the authors used scanning force microscopy (SFM) with chemical specificity to study surface chemical reactions with polyethylene films upon etching with chromic acid, and applied this technique to analyze surface modifications.
Journal ArticleDOI
Emergent Soft Lithographic Tools for the Fabrication of Functional Polymeric Microstructures.
TL;DR: Emergent soft lithographic methods that make use of masters that are self-forming, dynamic in their geometric and chemical properties, 3D in architecture, and/or sacrificial are explored, addressing their operational principles and the application space they can impact.
Journal ArticleDOI
Highly conductive carbon nanotube matrix accelerates developmental chloride extrusion in central nervous system neurons by increased expression of chloride transporter KCC2.
Wolfgang Liedtke,Michele Yeo,Hongbo Zhang,Yiding Wang,Michelle Gignac,Sara E. Miller,Ken Berglund,Jie Liu +7 more
TL;DR: It is shown that primary CNS neurons originating from the cerebral cortex, cultured on highly-conductive few-walled-CNT (fwCNT) have a strikingly accelerated chloride shift caused by increased KCC2 expression, which illustrates how fwCNTs can promote low neuronal chloride in individual neurons and thus inhibitory transmission in neural circuits.
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.