Simultaneous determination of the size and concentration of fine bubbles in water by laser-light scattering

Abstract

The preparation of nanoscale fine bubbles in water is an innovative technology, but no precise method for simultaneously measuring the size and concentration of such bubbles had previously been developed. We have developed a method for simultaneously determining the size and concentration of fine bubbles in water by a light-scattering technique. Dynamic light scattering gives the diffusion constant and particle size of fine bubbles, whereas static light scattering provides their concentration or molar mass. Static light scattering also provides the radius of gyration of the bubbles, thereby providing a means for validating measurements of the sizes of the fine bubbles.

Particle size analysis of transformer oil pollutants using dynamic light scattering technique

“…It has the advantages of simple sample preparation, non-invasive, high automation, *weili@hust.edu.cn; phone 15337239902 high accuracy, fast speed, non-contact, etc. It has been widely used in fields such as biology and medicine, such as characterizing the size of bubbles in liquids 7 , measuring the characteristics of individual macromolecular solutes 8 , with a measurement range of 1nm~5μm. Applying DLS to particle size analysis2 of TO can supplement the shortcomings of light obscuration, extend the lower limit of particle size measurement to the submicron level, and quickly and accurately obtain particle size distribution.…”

Dynamic relaxation process of a 3D super crystal structure in a Cu:KTN crystal

“…A 3D super crystal is essentially dynamic relaxation, which can be illustrated by some kinds of relaxation functions with a main characteristic relaxation time [19,[25][26][27] . The technique used in this experiment is dynamic light scattering (DLS), a technique that has been applied in the field of particle diameter measurement or size distribution profile in a suspension or polymers in a solution [28][29][30][31] , also known as photon correlation spectroscopy (PCS) or quasi-elastic light scattering (QELS).…”

“…The whole process works in the following way [29,30] . Initially, a laser beam goes through a polarizer and enters the crystal sample, and then suffers a diffraction effect caused by the 3D super crystal [26] .…”