light scatteringparticle size measurementoptical particle counteraplanatic singlet lensWe have designed and constructed w white light optical snesor for optical particle counter (OPC). The optical system of the sensor is a right-angle scattering type optics. It consists of an illumination system and ...
The optical properties and particle sizes for spheres are determined by comparing the measured light scattering profiles (intensity versus angle) with Mie theory. This is accomplished by suspending single spheres in a laser beam, recording the intensity of the scattered light as a function of angle...
Determination of particle size distribution - Single particle light interaction methods - Part 1: Light scattering aerosol spectrometer
To evaluate quantitatively the influence exerted by the shape and structure of nonspherical, nonideal particles on the results of single-particle scattered-light size analysis, measurements were conducted with individual particles of different materials (glass, limestone, and quartz). For this purpose, ...
The fast characterization of micrometric particle is becoming of increasing importance. The measurement of shape and the index of refraction of a particle allows very accurate characterization of the analysed material. A CCD-camera based small angle light scattering (SALS) apparatus has been developed...
Light scattering by nanoscale objects is a fundamental physical property defined by their scattering cross-section and thus polarizability. Over the past decade, a number of studies have demonstrated single-molecule sensitivity by imaging the interferenc
This requires rotation at the angle θ given by \(\tan (2\theta )=2{\epsilon }_{xy}/({\epsilon }_{xx}-{\epsilon }_{yy})\) which eliminates shear strain and brings \(\hat{\epsilon }\) to the diagonal form. The difference of the principal strains \(\delta \epsilon=\sqrt{{(...
Dynamic light scattering (DLS) measurements were based on three repetitions of 70 accumulation times. Samples were analyzed at 25 °C with a scattering angle of 165° and at 660 nm, diode laser, based on a dispersant refractive index (RI) of 1.33, a viscosity of 0.8878 and a ...
These mean values agree with the values measured by the dynamic light scattering experiment performed in this work (see below) and by small-angle X-ray scattering, nuclear magnetic resonance, and capillary electrophoresis reported in literature (Supplementary Tables 1, 2). The mean charge is also...
{\rm{ast}}}\) are the average defocus value and effective astigmatism which is half of the difference between defocuses in major and minor axes, Θast is the angle between the major axis and the x-axis, and Θk is the angle between the scattering vector and x-axis13,41,42,43. We...