A particle characterization apparatus comprising: a light source for illuminating a sample with a light beam; a detector arranged to detect scattered light from the interaction of the light beam with the sample; and a focus tuneable lens arranged to collect the scattered light for the detector from a scattering volume and/or to direct the light beam into the sample.

A device for characterizing particles dispersed in a liquid medium includes a fibered light emission source, a fibered optical detector, and a measurement probe intended to be hermetically submerged in the liquid medium. The measurement probe includes: a confinement tube intended to pass through at least one wall of the probe in a sealed manner and suitable for receiving a sample of the liquid medium, as well as an optical measurement head including a focusing optics for the focusing of an illumination light beam in the confinement tube and a collection optics for the collection toward the optical detector of a beam of light backscattered by the dispersed particles. The characterization device also includes a processing unit suitable for the characterization of the particles based on the backscattered-light beam.

Laser speckle microrheology is used to determine a mechanical property of a biological tissue, namely, an elastic modulus. Speckle frames may be acquired by illuminating a coherent light and capturing back-scattered rays in parallel and cross-polarized states with respect to illumination. The speckle frames may be analyzed temporally to obtain diffuse reflectance profiles (DRPs) for the parallel-polarized and cross-polarized states. A scattering characteristic of particles in the biological tissue may be determined based on the DRPs, and a displacement characteristic may be determined based at least in part on a speckle intensity autocorrelation function and the scattering characteristic. A size characteristic of scattering particles may be determined based on the DRP for the parallel polarization state. The mechanical property may be calculated using the displacement and size characteristics.

Provided herein are particle detection systems, and related methods configured to characterize a liquid sample, comprising: a first probe configured to determine a first parameter set of a plurality of first particles in a liquid sample, the first particles characterized by a size characteristic selected from a first size range; wherein the first parameter set comprises a first size distribution and a first concentration; and a second probe configured to determine a second parameter set of one or more second particles in the liquid sample, the second particles being characterized by a size characteristic selected from a second size range; wherein the second parameter set comprises a second size distribution and a second concentration.

Provided is a dynamic light scattering type particle size distribution measuring apparatus 100 capable of accurately measure the particle sizes of a sample obtained from slurry or the like. The dynamic light scattering type particle size distribution measuring apparatus 100 is configured to include: a filter member 6 that is interposed between any adjacent two of a light source 4, a cell 2, and a photodetector 5 and attenuates light passing therethrough; and an information processing device 8 that measures a particle size distribution multiple times with time and combines particle size distributions obtained at respective times of measurement to thereby calculate the particle size distribution of the whole of portions of the sample introduced at the respective times of measurement. In addition, the filter member 6 is also configured to be changeable to one having a different attenuation level at every time of measurement.

An instrument for measuring characteristics of particles. A particle sample is introduced into a sample cell. The sample particles are subjected to gravitational or centrifugal forces wherein particle motion is dependent upon particle characteristics. The particles are illuminated by an illumination device to produce light scattered by the particles. The light is detected by at least one detector. Characteristics of the particles are determined from the detector signals.

The present disclosure describes a computer implemented method, a system, and a computer program product of calculating molar mass values of components of and molar concentration values of conjugate molecules/particles.

A method of characterising particles in a sample, comprising: obtaining a scattering measurement comprising a time series of measurements of scattered light from a detector, the scattered light produced by the interaction of an illuminating light beam with the sample; producing a corrected scattering measurement, comprising compensating for scattering contributions from contaminants by reducing a scattering intensity in at least some time periods of the scattering measurement; determining a particle characteristic from the corrected scattering measurement.

A biomimetic ice growth inhibition material is prepared. by constructing a library for structures of compound molecules, with the compound molecules comprising a hydrophilic group and an ice-philic group, by evaluating the spreading performance of each compound molecule at an ice-water interface by adopting molecular dynamics simulation (MD simulation), and by screening the compound molecules with the desired affinities for ice and water. The present invention firstly provides the mechanism of the affinities of the ice growth inhibition material for ice and water, introduces MD simulation into the molecular structure design of the ice growth inhibition material, evaluates the affinities of the designed ice growth inhibition material for ice and water through MD simulation, predicts the ice growth inhibition performance of the ice growth inhibition material, and can realize the optimization of the structure.

A glittery ink contains glittery pigment particles, resin particles, and an organic solvent, wherein the following relationships are satisfied: a≤c≤b and a<b, where a represents the particle diameter of the resin particles corresponding to the minimum of two or more peaks in a particle size distribution as measured by a dynamic light scattering particle size distribution measuring device, b represents the particle diameter of the resin particles corresponding to the maximum of the two or more peaks in the particle size distribution, and c represents the particle diameter of the glittery pigment corresponding to a maximum number of particles in a particle size distribution as measured by the dynamic light scattering particle size distribution measuring device.