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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Wetting characteristics of liquid drops at heterogeneous surfaces
TL;DR: In this paper, the authors measured the contact angles for water drops with the strips both tangential to and normal to the three-phase contact line and showed that when the strips were normal to a drop edge, the contact angle was lower by 7-16° than those calculated from the Cassie equation.
Journal ArticleDOI
Acid-base properties and the chemical imaging of surface-bound functional groups studied with scanning force microscopy
TL;DR: In this article, a scanning force microscopy (SFM) study on electrostatic and hydrogen-bonding interactions between chemically modified SFM probes and surface functional groups was presented. pH-dependent lateral force imaging was found to directly map the ionization state of surface-bound functional groups.
Patent
High-Speed, High-Resolution Electrophysiology In-Vivo Using Conformal Electronics
TL;DR: In this paper, biomedical devices and methods of making and using biomedical devices for sensing and actuation applications are described. But, they do not specify any specific applications of these devices.
Journal ArticleDOI
Oligothiophene-Functionalized Truxene: Star-Shaped Compounds for Organic Field-Effect Transistors
TL;DR: In this article, the electronic and optical properties of compounds with increasing numbers of thiophene rings at each of the three branches were investigated using scanning electron microscopy (SEM), X-ray diffraction measurements, and ultraviolet-visible (UV-vis) and photoluminescence spectroscopies.
Journal ArticleDOI
Design and fabrication of a multilayered polymer microfluidic chip with nanofluidic interconnects via adhesive contact printing
Bruce R. Flachsbart,Kachuen Wong,Jamie M. Iannacone,Edward Abante,Robert L. Vlach,Peter A. Rauchfuss,Paul W. Bohn,Jonathan V. Sweedler,Mark A. Shannon +8 more
TL;DR: The results indicate that the mixed polymer micro-nanofluidic multilayer chip has electrical characteristics needed for use in microanalytical systems.
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.