09,08,2026 8 views
Zeta potential and nanoparticle size analyzer particle size measurement: dynamic light backscattering technology and full-scale Mie theory processing molecular weight measurement: hydraulic diameter or Debye curve technology: membrane electrode, micro electric field potential measurement, "Y '- type fiber probe design, out of phase Doppler frequency shift, controllable reference method, fast Fourier transform algorithm, non spherical particle correction factor.
Optical system:
A 3mW780nm semiconductor fixed position laser is used to directly irradiate the sample through a gradient stepping fiber, and a silicon photodiode is used to receive the backscattered light signal at a fixed position without correcting the optical path.
The Zeta potential and nanoparticle size analyzer mainly has the following characteristics:
1. The dynamic light scattering technology is adopted, and the concept of energy is introduced to replace the traditional photon correlation spectroscopy method with the "Y '- type fiber optic system. Through the sapphire measurement window, the particle size distribution in the suspended system is directly measured. Under the loading current, a micro electric field is generated corresponding to the membrane electrode to measure the Zeta potential of the same system, avoiding sample cross contamination and concentration changes.
2. By using the out of phase Doppler frequency shift technique, the optical signal intensity is several orders of magnitude higher than traditional methods, improving the reliability of analysis results. The controllable reference method (CRM) of * can finely analyze the energy spectrum generated by the Doppler frequency shift, ensuring the sensitivity of the analysis.
3. The design of the scattering path length of ultra short particles in suspension reduces the interference of multiple scattering phenomena, ensuring the accuracy of nanoparticle testing in high concentration solutions.
4. The Fast Fourier Transform (FFT) algorithm is used to quickly process the energy spectrum obtained by the detection system, reducing analysis time.
5. Membrane electrode design to avoid thermal effects and accurately measure particle electrophoresis speed.
6. No need for colorimetric dishes, capillary electrophoresis cells, or external electrode cells. Simply click the Zeta potential operation button to obtain analysis results within one minute.
7. Eliminate the interference of various spatial hindrance factors on scattered light signals, such as transmission losses between different optical components in the optical path, errors caused by different positions of the sample pool, refraction and contamination of the colorimetric dish wall, influence of dispersed media, attenuation of multiple scattering, etc., to improve sensitivity.
