抄録
A photon correlation spectroscopy (PCS) apparatus has been developed for measuring nanoparticles with diameters below 10nm by improving the individual components and the data reduction methods. The PCS is capable of sampling and storing photon counting data with multi-bit capability at the same time interval on each channel. We evaluated the performance of the new PCS apparatus: (1) accuracy of average size measurement as compared with a conventional PCS apparatus, (2) accuracy of particle size distribution measurement at a constant flow rate, and (3) ability for in-situ hydrodynamic diameter measurement for metallic single nanoparticles. Experimental results show that the newly developed PCS has an improved performance over the conventional PCS system for in-situ hydrodynamic diameter measurement for nanoparticles below 10nm in diameter.
