Analysis of Gold nanoparticles (AuNPs) by Nanoparticle tracking analysis (NTA) (CAT#: STEM-MB-0750-WXH)

Introduction

Gold nanoparticles (AuNPs) are small gold particles with a diameter of 1 to 100 nm which, once dispersed in water, are also known as colloidal gold. Gold nanoparticles are used in resonance scattering dark-field microscopy for the detection of microbial cells and their metabolites, the bio-imaging of tumor cells, and for the detection of receptors on their surface, and for the study of endocytosis.

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Principle Applications Procedure Materials Notes Related Products

Principle

Nanoparticle tracking analysis (NTA) is a method for visualizing and analyzing particles in liquids that relates the rate of Brownian motion to particle size. The rate of movement is related only to the viscosity and temperature of the liquid; it is not influenced by particle density or refractive index. NTA allows the determination of a size distribution profile of small particles with a diameter of approximately 10-1000 nanometers (nm) in liquid suspension.

Applications

NTA has been used by commercial, academic, and government laboratories working with nanoparticle toxicology, drug delivery, exosomes, microvesicles, bacterial membrane vesicles, and other small biological particles, virology and vaccine production, ecotoxicology, protein aggregation, orthopedic implants, inks and pigments, and nanobubbles.

Procedure

1. Sample preparation
2. Nanoparticle Tracking Analysis
3. NTA Data Processing, Display, and Interpretation

Materials

• Nanoparticle Tracking Analysis (NTA) instrument
• NanoSight instrument
• Nanoparticle Analyzer

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