Scientist Malvin proposes measuring the experimental new scheme of the inferior nanometer particle graininess
Until " whether nanometer particle study the magazine " ' Vol. 10 of number 5) One piece thesis in,put forward the Malvin Company one scientists by experimental scheme, with less than nanometer of particles, go on and measure to the intersection of fluid mechanics and particle diameter, precision reaches 0.1 nanometers.
This measuring way adopts Malvin Zetasizer particle attribute system, use of this system Dynamic light scattering Technological ' DLS )Measure particle size. Its optics disposes the optic fibre disposition combining the high sensitive probe and optimizing, this is a key factor of outstanding degree of sensitivity of this system implementation.
Regard cane sugar as the sample material and run an experiment, the result shows, rigorous, verifiable inferior nanometer measurement can well be realized. The thesis question, for " uses the inferior nanometer size of commercial measurement of the dynamic light scattering ", author Kaszuba, M. Et al. already opened the access permission on the net at present, offered a associated application specification on the websites of Malvin Company at the same time, suitable for user's free download.
The particle graininess weighs the key factor with good and bad quality in much application, with the progress of science and technology, have proposed more high requirement for increasingly small particle and molecular control. For example, develop the field in medicines, protein is usually used as the active medicine composition. To enough degree of sensitivity, technical demand that can measure the nanometer size particle are increasing constantly tooing at the same time. The cane sugar is an extreme example, make users restrain the inner ability of the range from producing sufficient confidence to this system and technology in the specification.
DLS is right Light scattering of laser The time varying of the intensity fluctuates and analyzes, in order to measure diffusion coefficient and particle size. This research shows, after the meticulous sample is prepared and appropriate optics is disposed, Zetasizer Nano S can measure the particle size accurately with the inferior and nanometer specification. To need little member should be by having a very important meaning in quality control all future at present result this.
