Gold Nanostructure Etching
Gold Nanostructure Etching - Related Videos
12:35
Atomically Traceable Nanostructure Fabrication
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Cited by 4 •
2015
We report a protocol for combining the atomic metrology of the Scanning Tunneling Microscope for surface patterning with selective Atomic Layer Deposition and Reactive Ion Etching. Using a robust process involving numerous atmospheric exposures and transport, 3D nanostructures with atomic metrology are fabricated.
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.
11:17
Fundamental Technical Elements of Freeze-fracture/Freeze-etch in Biological Electron Microscopy
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Cited by 6 •
2014
Basic techniques and refinements of freeze-fracture processing of biological specimens and nanomaterials for examination by transmission electron microscopy are described. This technique is a preferred method for revealing ultrastructural features and specializations of biological membranes and for obtaining ultrastructural level dimensional and spatial data in materials sciences and nanotechnology products.
13:37
Template Directed Synthesis of Plasmonic Gold Nanotubes with Tunable IR Absorbance
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Cited by 1 •
2013
Solution-suspendable gold nanotubes with controlled dimensions can be synthesized by electrochemical deposition in porous anodic aluminum oxide (AAO) membranes using a hydrophobic polymer core. Gold nanotubes and nanotube arrays hold promise for applications in plasmonic biosensing, surface-enhanced Raman spectroscopy, photo-thermal heating, ionic and molecular transport, microfluidics, catalysis and electrochemical sensing.
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.
FAQs
The oxidizing agent converts metallic gold into soluble gold species, enabling atoms to leave the nanostructure. Ligands or related reagents stabilize those dissolved products and can influence how readily removal proceeds. Their combined action therefore affects both the chemical progress of etching and the structural result, rather than simply determining how much gold is removed.
Ligand interactions and reaction conditions can favor removal from particular crystal facets or regions of a nanostructure. This selectivity allows researchers to change surface structure, dimensions, or shape without treating every part identically. The resulting differences are important because nanoscale optical, catalytic, and electronic behavior depends on the structure produced by that selective reaction.
These variables regulate the extent and character of gold removal. Increasing or decreasing reagent concentration, changing temperature, or adjusting exposure time can shift the result toward different sizes, shapes, surface structures, or compositions. Controlling them is therefore essential for reproducibility, because the same starting material can produce different nanostructures under different chemical conditions.
A basic workflow begins with selecting a gold nanomaterial, such as a nanoparticle or nanorod, and exposing it to an oxidizing system containing suitable stabilizing ligands or reagents. Researchers then control concentration, temperature, and exposure time while the reaction proceeds. Finally, they evaluate the modified size, shape, surface structure, or composition to determine whether the intended architecture formed.
Researchers choose the method when the starting gold structure does not provide the desired nanoscale properties or architecture. Controlled removal can tune dimensions and surface features, alter composition, and support fabrication of more complex structures. These changes are useful when optical, catalytic, or electronic behavior must be adjusted through chemical control of nanoscale structure.
The process can produce modified nanoparticles, nanorods, and related materials whose size, shape, surface structure, or composition differs from the starting material. Such changes provide a way to investigate how nanoscale structure affects reactivity and properties. In chemistry and nanomaterials research, the resulting structures support studies of optical, catalytic, and electronic behavior.
Gold nanostructure etching connects chemical reactivity with nanoscale structure. Researchers can examine how oxidizing agents, soluble gold species, ligands, and reaction conditions govern selective material transformation. This makes the method useful not only for fabricating nanomaterials but also for studying structure-dependent reactivity, where changes in surface or geometry influence the behavior of the resulting material.