Gold Substrate
Gold Substrate - Related Videos
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.
08:21
Fabrication of Periodic Gold Nanocup Arrays Using Colloidal Lithography
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Cited by 1 •
2017
We demonstrate the fabrication of periodic gold nanocup arrays using colloidal lithographic techniques and discuss the importance of nanoplasmonic films.
05:02
Growth of Gold Dendritic Nanoforests on Titanium Nitride-coated Silicon Substrates
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Cited by 5 •
2019
This study presents a feasible procedure for synthesizing gold dendritic nanoforests on titanium nitride/silicon substrates. The thickness of gold dendritic nanoforests increases linearly within 15 min of a synthesis reaction.
07:08
In Situ Synthesis of Gold Nanoparticles without Aggregation in the Interlayer Space of Layered Titanate Transparent Films
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Cited by 1 •
2017
Here, we present a protocol for the in situ synthesis of gold nanoparticles (AuNPs) within the interlayer space of layered titanate films without the aggregation of AuNPs. No spectral change was observed even after 4 months. The synthesized material has expected applications in catalysis, photo-catalysis, and the development of cost-effective plasmonic devices.
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.
FAQs
Sulfur-containing thiol groups bind strongly to gold, allowing molecules to arrange into self-assembled monolayers. These organized molecular layers create a controlled interfacial chemistry rather than leaving the surface chemically undefined. By selecting the molecules in the layer, researchers can adjust wettability, provide sites for biomolecule attachment, and regulate how biological materials interact with the engineered surface.
Gold's chemically inert bulk material provides a stable foundation while its surface remains available for deliberate modification. This separation between material stability and surface tunability helps researchers change interfacial properties without substantially altering the supporting platform. As a result, gold substrates can provide reproducible conditions for studying molecular interactions, cell adhesion, and sensing responses.
Gold substrates can conduct electrical signals and interact with light through plasmonic effects, in which surface-associated optical behavior supports signal generation or detection. These properties allow the same platform concept to support electrochemical measurements and optical biosensing. The selected readout determines whether molecular or biological events are monitored through electrical changes, optical responses, or both.
Researchers form a self-assembled monolayer by presenting thiol-containing molecules to the gold surface, allowing gold-sulfur bonding to anchor and organize them. The resulting layer can tune wettability and create a controlled chemical environment for attaching biomolecules. This approach converts a stable gold surface into an interface whose properties are selected for a particular bioengineering measurement or interaction.
They are useful when a device must connect biological recognition or interaction with an electrical or optical readout. Conductivity supports electrochemical biosensors, while plasmonic interactions support optical biosensors. Their modifiable surfaces also help position or attach relevant molecules, making these platforms suitable for measuring molecular interactions in diagnostic and other bioengineering systems.
In cell studies, researchers modify the surface chemistry to examine how cells adhere to an engineered interface. The same controllable platform can be incorporated into microfabricated devices or used to connect biological materials with measurement systems. These capabilities support investigations relevant to tissue-engineering platforms, as well as the design of diagnostic and therapeutic technologies.