Method and apparatus of ultrafast particle dynamics measurement based on photon ensemble correlation spectroscopy

a particle dynamics and photon ensemble technology, applied in the field of optical measurement, can solve the problems of more complicated and costly measuring devices, unusable optical properties of submicron and nanometer particulate materials, and achieve the effects of effective restraint of multiple scattering, ensuring reliability and accuracy of statistical measurement results, and increasing the reliability and accuracy of statistical calculation

Active Publication Date: 2019-03-21
ZHEJIANG UNIV
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is a particle detection technology that uses low coherence interference and dynamic light scattering to improve detecting accuracy. The technology can detect scattered signals from particles in multiple dimensions (spatial, spectral, angular, and polarization) simultaneously, and combines the amplitude and phase information to obtain a time correlation function. This increases the reliability and accuracy of statistical calculation of signal correlation with decay over time. Compared to conventional methods, the technology can obtain sufficient samples of scattered signals in parallel, and the single measurement time can be shortened to several milliseconds, which is fast enough for rapid detection of particle information.

Problems solved by technology

In addition, optical properties of submicron and nanometer particulate materials are beyond the ordinary.
However, the above-mentioned PCS method is only for single-scattering particle samples, such as low concentration suspensions.
In addition, the measuring device is more complicated and costly.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045]The specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings, which form a part hereof. It should be noted that these descriptions and examples are merely exemplary and should not be construed as limiting the scope of the present invention which is defined by the appended claims. Any modifications based on the claims of the present invention are within the protection scope of the present invention.

[0046]For easily understanding the embodiment of the present invention, operations are described as a plurality of discrete operations. However, the order of description does not represent the order in which the operations are performed.

[0047]This description uses a representation of mathematical variables for the measurement space. This description is for the purpose of promoting discussion only and is not intended to limit the application to the embodiment of the present invention, wherein: z denotes a depth directio...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
focal lengthaaaaaaaaaa
full width at half maximumaaaaaaaaaa
central wavelengthaaaaaaaaaa
Login to view more

Abstract

An apparatus of ultrafast particle dynamics measurement based on photon ensemble correlation spectroscopy include steps of: dispersing a particle sample to be detected; establishing a plurality of sampling volumes, and collecting dynamic scattered light signals in parallel; and constructing sample ensembles based on scattered signals of the sampling volumes, analyzing time correlations between the sample ensembles, and detecting particle dynamic characteristics. A period for a single measurement of particles according to the method can be in the range of several milliseconds to several tens of milliseconds, which is conducive to real-time detection. More accurate and reliable correlation characterization can be obtained by combining the detected complex-valued scattered signals with both amplitude and phase information. Furthermore, the particle detection is able to be spatially resolved, so as to achieve spatially resolved particle dynamic characteristics.

Description

CROSS REFERENCE OF RELATED APPLICATION[0001]This is a U.S. National Stage under 35 U.S.C 371 of the International Application PCT / CN2017 / 073113, filed Feb. 8, 2017, which claims priority under 35 U.S.C. 119(a-d) to CN 200710028185.0, filed Jan. 13, 2017.[0002]BACKGROUND OF THE PRESENT INVENTIONField of Invention[0003]The present invention relates to a technical field of optical measurement, and more particularly to a method and apparatus of ultrafast particle dynamics measurement based on photon ensemble correlation spectroscopy, which can be used in industrial production and other aspects for detecting size, viscosity and other information of submicron and nanometer particles.Description of Related Arts[0004]Particles, which are small dispersed substances, are ubiquitous in nature, manufacturing process and human daily life and other aspects in solid, gas or liquid state forms. Information on particles such as size (particle size) and viscosity is closely related to the properties ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(United States)
IPC IPC(8): G01N15/02G01N11/02
CPCG01N15/0211G01N11/02G01N2011/008G01N2015/0038G01N2015/0046G01N2015/0053G01N2015/03G01N11/00G01N15/00G01N2015/0222
Inventor LI, PENGLI, PEI
Owner ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap