What are Silver and Gold Nanoparticles?

The scientific discipline of nanotechnology is rapidly expanding and has a wide range of critical sub-fields. Research and development (R&D) at the nanoscale is the foundation for several technologies, including thin-film engineering, microelectromechanical systems (MEMS), advanced treatments, and many more.

What are Silver and Gold Nanoparticles?

Image Credit: Nikalyte Ltd.

Many of these innovations depend on new materials, particularly nanoparticles. Colloidal nanoparticles have a variety of uses, and, as production methods develop, so do the options for the underlying materials. Research applications, however, frequently require metallic nanoparticles, notably silver and gold.

What are Silver and Gold Nanoparticles?

Nanoparticles typically range in size from 1 to 100 nanometers (nm). Any bigger would cause the substance to move into the macro-scale, while any smaller would bring it into the atomic scale. Materials in the nanoscale, especially conductive metals, have a wide range of advantageous size-dependent features.

Gold particles.

Image Credit: Nikalyte Ltd.

Gold nanoparticles (AuNPs) are stable and versatile objects frequently made in various sizes, structures, and shapes. The size and shape of the nanoparticles play a crucial role in the application in which they are used.

AgNPs, or silver nanoparticles, are generally used in biological applications to detect cancer. They are also employed in the agricultural, medical, and industrial fields.

Silver particles.

Image Credit: Nikalyte Ltd.

Silver and Gold Nanoparticle Synthesis Techniques: Deposition

Bottom-up chemical techniques, commonly called “wet” chemistry, are frequently used to create nanoparticles. Solvents are employed to form nanoscale structures from clusters of starter materials. These methods include hydrothermal synthesis, electrodeposition, sol-gel synthesis, and precipitation.

These techniques, however, frequently require numerous difficult and time-consuming stages with elements that are potentially dangerous and hostile to the environment.

Chemical synthesis can be unreliable since it is challenging to tightly control key qualities, which results in poor reproducibility and a lack of homogeneity in composition and size.

A vacuum nanoparticle deposition technology created by Nikalyte ensures the nanoparticles are homogeneous, free of hydrocarbons, and ultra-pure.

A convenient way to deposit ultra-pure, non-agglomerated nanoparticles onto substrates is through vacuum nanoparticle deposition.

Nikalyte deploys magnetron sputtering to create metallic vapor followed by terminated gas condensation to produce a beam of nanoparticles under vacuum conditions with extremely fine deposition control. Substrates can be made of plastic, glass, paper, silicon wafers, and other materials, and surfaces can be rough or uneven.

What are the Advantages of Deposition?

Compared to conventional chemical procedures, the deposition approach to making gold nanoparticles has several benefits. These are:

Consistent Results

The nanoparticles created through the vacuum deposition technique have enhanced sensitivity for detecting ppm and ppb levels.


The deposition process ensures that nanoparticles are devoid of ligands and hydrocarbons.

Safer Materials

As no poisonous or hazardous materials are used during the deposition process, it is safer to carry out.


Users can add nanoparticles to any substrate and adjust the layer density and thickness.

Interested in Nanoparticle Deposition?

Nanoparticle synthesis should be simple and convenient, leading Nikalyte to create the NL50 system, an advanced deposition tool for specialists in the industry working with the complete spectrum of nanotechnology applications.

This information has been sourced, reviewed, and adapted from materials provided by Nikalyte Ltd.

For more information on this source, please visit Nikalyte Ltd.


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