Measurement of Time-dependent Change of Metal Nanoparticles – Application of Ultrafast Scanning Speed of UV-1900

Metal nanoparticles have the unique properties and are applied to various fields. The relationship between particle size distribution/particle shape and optical properties of gold nanoparticles was demonstrated in Application News No.534. This time, absorption spectra of gold nanoparticles and silver nanoparticles used as antibacterial coating were measured with the newly developed UV-1900 UV-VIS spectrophotometer. The light reduction phenomenon which was caused by their clumping after adding a salt solution to them was also measured with it. “Survey” (about 29,000 nm/min) is added to the wavelength scanning speed of the UV-1900 and allows the spectrum measurement in the long wavelength range only in a few seconds. It is effective for the investigation of the light reduction phenomenon which is shown in this report and needs the spectrum measurement in the long wavelength range in a short time.

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Application News
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Molecular Spectroscopy, UV-Vis Spectrophotometers
nanoparticles, ultrafast scanning speed, time-dependent, wavelength, uv-1900
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