Gold Substrate Patterning
Gold Substrate Patterning - Related Videos
08:36
Creating Two-Dimensional Patterned Substrates for Protein and Cell Confinement
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Cited by 5 •
2011
Self-assembled monolayers (SAMs) formed from long chain alkane thiols on gold provide well-defined substrates for the formation of protein patterns and cell confinement. Microcontact printing of hexadecanethiol using a polydimethylsiloxane (PDMS) stamp followed by backfilling with a glycol-terminated alkane thiol monomer produces a pattern where protein and cells adsorb only to the stamped hexadecanethiol region.
13:02
Microfabrication of Nanoporous Gold Patterns for Cell-material Interaction Studies
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Cited by 16 •
2013
We report on techniques to micropattern nanoporous gold thin films via stencil printing and photolithography, as well as methods to culture cells on the microfabricated patterns. In addition, we describe image analysis methods to characterize morphology of the material and the cultured cells using scanning electron and fluorescence microscopy techniques.
09:24
Micropunching Lithography for Generating Micro- and Submicron-patterns on Polymer Substrates
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Cited by 1 •
2012
A micropunching lithography approach is developed to generate micro- and submicron-patterns on top, sidewall and bottom surfaces of polymer substrates. It overcomes the obstacles of patterning conducting polymers and generating sidewall patterns. This method allows rapid fabrication of multiple features and is free of aggressive chemistry.
07:19
Cell Patterning on Photolithographically Defined Parylene-C: SiO2 Substrates
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Cited by 9 •
2014
This protocol describes a microfabrication-compatible method for cell patterning on SiO2. A predefined parylene-C design is photolithographically printed on SiO2 wafers. Following incubation with serum (or other activation solution) cells adhere specifically to (and grow according to the conformity of) underlying parylene-C, whilst being repulsed by SiO2 regions.
05:51
Large Area Substrate-Based Nanofabrication of Controllable and Customizable Gold Nanoparticles Via Capped Dewetting
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Cited by 1 •
2019
This protocol details a novel nano-manufacturing technique that can be used to make controllable and customizable nanoparticle films over large areas based on the self-assembly of dewetting of capped metal films.
FAQs
Both routes begin with lithographic pattern definition, but they remove different material after gold deposition. In lift-off, the deposited gold remains only where the pattern permits it, whereas selective etching removes gold from chosen regions after deposition. This process choice determines which areas retain conductive or chemically functional gold and therefore affects the final surface architecture.
Pattern dimensions establish the spatial relationship between gold and the supporting material. Changing feature size or spacing can alter where cells adhere, how they are guided, and how device regions interact with biological systems. Dimensions also connect the physical layout of a substrate to measurement performance, making geometry an important design variable in engineered interfaces.
Self-assembled monolayers provide a surface treatment that can control molecular binding on exposed gold regions. By changing chemical functionality at the interface, they help distinguish areas that support or limit particular molecular interactions. This added chemical control complements the physical pattern and is especially relevant when substrate behavior depends on selective binding or cell-material interactions.
A typical workflow defines the desired microscale or nanoscale geometry with lithography, deposits gold onto the prepared supporting material, and then uses lift-off or selective etching to establish the final features. Surface treatment may follow, including formation of self-assembled monolayers. The resulting substrate combines a designed layout with controlled conductivity, adhesion, or chemical functionality.
The approach is useful when researchers need a substrate that combines defined physical regions with tailored biological or electrical behavior. Applications described for bioengineering include guiding cells, fabricating biosensors, developing microelectrodes, and examining cell-material interactions. In each case, patterned regions help relate surface design to biological response or to the performance of a measurement device.
These substrates can reveal how surface geometry, conductivity, adhesion, and chemical functionality influence biological interactions. Comparing regions with different patterns or treatments helps connect device architecture with cell behavior, molecular binding, or measurement performance. Consequently, the same platform can support both engineered device development and studies of how cells respond to designed material surfaces.