The preparation of nanopowders is generally categorized into Physical Methods and Chemical Methods. Below is a detailed comparison list highlighting their characteristics: Comparison Table: Physical vs. Chemical Synthesis of Nanopowders Feature Physical Methods (Top-down) Chemical Methods (Bottom-up) Basic Principle Top-down: Bulk materials are broken down into nanoparticles using p...
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Gold nanoparticles refer to ultrafine gold particles with a particle size between 1 and 100 nanometers. Unlike macroscopic gold, nanoscale gold exhibits significant surface plasmon resonance (SPR) effects, quantum size effects, and a huge specific surface area. These characteristics endow it with excellent optical, electrical, and catalytic properties in complex biological environments. In additio...
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