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In a paper in the Journal of Nanoparticle Research (Volume 5, Issue 10), Malvern scientists proposed an experimental scheme to measure particles with a hydrodynamic particle size of less than 1 nanometer with accuracy Reached 0.1 nm.
The measurement method uses the Malvern Zetasizer particle characterization system, which uses dynamic light scattering technology (DLS) to measure the particle size. Its optical configuration combines a highly sensitive detector with an optimized fiber configuration, which is the key factor for the system to achieve excellent sensitivity.
Experiments with sucrose as the sample material showed that accurate and verifiable sub-nanoscale measurements can be achieved. The thesis is titled "Using Dynamic Light Scattering Techniques to Measure Sub-Nanometer Sizes". The author Kaszuba, M. et al. Is currently open on the Internet, and a related application manual is also provided on the Malvern website It is free for users to download.
Particle size is a key factor to measure the quality of quality in many applications. With the advancement of science and technology, higher requirements are placed on the control of smaller and smaller particles and molecules. For example, in the field of drug development, proteins are often used as active pharmaceutical ingredients. At the same time, there is a growing demand for technologies that have sufficient sensitivity to measure nano-sized particles. Sucrose is an extreme example, allowing users to generate sufficient confidence in the ability of the system and technology to be within specifications.
DLS analyzes the time-varying fluctuations of the laser light scattering intensity to measure the diffusion coefficient and particle size. This study shows that after careful sample preparation and proper optical configuration, Zetasizer Nano S can accurately measure the particle size with sub-nanometer specifications. This result is of great significance for all current and future applications requiring small molecule quality management.
To download the application manual, please visit: http: //
To download published papers, please visit:
http: //? p = 9f9d3498756141dba9f6d89ed5be64ac & pi = 10
Malvern, Malvern Instruments and Zetasizer are registered trademarks of Malvern Instruments Ltd.
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