Product Name
Name:a>Silver Nanopowder
Product Overview
The particle size of nano silver powder is usually between 1-100 nanometers. Compared with macroscopic silver particles, the particle size of nano silver powder is extremely small, which gives it unique physical and chemical properties. For example, when the particle size of silver particles decreases to the nanometer level, the proportion of surface atoms increases significantly, and the surface effect is significantly enhanced.
The particle size also affects the color of the nano silver powder. Generally speaking, as the particle size decreases, the color of nano silver powder gradually changes from silver white to yellow or even brown, due to the surface plasmon resonance effect of the nanoparticles. The absorption and scattering characteristics of silver nanoparticles with different particle sizes in the visible light region are different, resulting in different colors. Silver is an excellent conductive material, and due to its nanoscale effect, silver nanoparticles also have some special electrical properties while maintaining the good conductivity of silver. For example, the resistance of nano silver powder increases with the decrease of particle size, because the reduction of nanoparticle size leads to a decrease in the average free path of electrons, and the transmission of electrons in nano silver powder is subject to more scattering and obstruction.
Nano silver powder may exhibit quantum phenomena such as quantum tunneling at low temperatures. When the distance between silver nanoparticles is small enough, electrons can be transmitted between particles through quantum tunneling effect, which makes silver nanoparticles have potential application value in some nanoelectronic devices, such as preparing conductive connections and quantum dot contacts in nanocircuits. Nano silver powder has unique optical properties, mainly due to its surface plasmon resonance effect. When the frequency of incident light matches the oscillation frequency of free electrons on the surface of nano silver powder, strong absorption and scattering phenomena occur. This surface plasmon resonance effect endows nano silver powder with strong optical absorption and scattering capabilities in the visible and near-infrared light regions.
Technical Parameter
Purity:~96.5wt%
tap density:¡ãC.5 g/cm3
particle size:60-150 nm
BET¡ãC m2/g
Product Features
Excellent conductivity: Nano silver powder has excellent conductivity and is an important material in the field of microelectronics.
Excellent antibacterial performance: Nano silver powder has strong inhibitory and killing effects on dozens of pathogenic microorganisms such as Escherichia coli, Neisseria gonorrhoeae, and Chlamydia trachomatis, and does not develop drug resistance. Its antibacterial performance is directly related to its particle size, and theoretically, the smaller the particle size, the stronger the bactericidal performance.
Excellent thermal conductivity: Nano silver powder also exhibits excellent thermal conductivity and can be used to prepare thermal interface materials to improve thermal conductivity efficiency.
Application Fields
High end silver paste: In the field of electronic technology, nano silver powder is widely used in the preparation of high-end silver paste, providing efficient conductive function for electronic devices
Conductive coating: Nano silver powder can be used to prepare conductive coatings, which theoretically can be applied in fields such as transparent conductive electrodes, anti-static coatings, electromagnetic shielding, etc.
Medical field: In the medical field, nano silver powder can theoretically be applied to medical devices, wound dressings, disinfectants and other products due to its excellent antibacterial properties, effectively inhibiting bacterial growth and reducing the risk of infection
Other fields: In addition, nano silver powder can also be used in various fields such as catalytic materials, new energy, electroplating industry, as well as green household appliances and home products
Related Information
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