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Measuring Size of Light Absorbing Materials with Dynamic Light Scattering

Particle Characterization

Samples that absorb certain light wavelengths can pose problems with measurement on dynamic light scattering systems, as the technique relies on the 激光器 signal being scattered by the 纳米颗粒 being measured, rather than absorbed. Nanogold is an example of a sample that can be tricky to measure due to the surface plasmon resonance effect that leads to stronger than normal absorbance, drastically reducing the scattering signal.

In this 应用笔记, a ~26 nm nanogold sample was measured with two different setups of 检测器 angle and 检测器 position using the HORIBA SZ-100V2 nanoparticle analyzer. One setup was with the 90° 检测器 and cell center position, and the other setup was with the 173° 检测器 and cell wall position. The absorption spectrum of the nanogold was also confirmed using a HORIBA Duetta Fluorescence and Absorbance Spectrometer.

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Measuring Size of Light Absorbing Materials with Dynamic Light Scattering
In this 应用笔记, a ~26 nm nanogold sample was measured with two different setups of 检测器 angle and 检测器 position using the SZ-100V2 nanoparticle analyzer. One setup was with the 90° 检测器 and cell center position, and the other setup was with the 173° 检测器 and cell wall position. The absorption spectrum of the nanogold was also confirmed using a Duetta Fluorescence and Absorbance Spectrometer.
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