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Nanoparticle particle size measurement system

A nanoparticle and measurement system technology, applied in the field of measurement, can solve problems such as inaccurate measurement results, and achieve the effect of improving accuracy

Pending Publication Date: 2019-11-15
NAT INST OF METROLOGY CHINA
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Problems solved by technology

[0004] Based on this, it is necessary to provide a nanoparticle size measurement system for the inaccurate measurement results of the traditional nanoparticle size measurement system

Method used

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Embodiment Construction

[0035] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail through the following embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.

[0036] The serial numbers assigned to components in this document, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. The "connection" and "connection" mentioned in this application all include direct and indirect connection (connection) unless otherwise specified. In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom"...

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Abstract

The invention provides a nanoparticle particle size measurement system. A first light blocking structure and a second light blocking structure are placed in a matching liquid. The first light blockingstructure is arranged on the forward extension line of an incident light beam and is used for absorbing and reflecting the light beam, so that the light beam cannot reach the junction of the wall surface of a matching pool and the air to be reflected. The second light blocking structure is arranged on the reverse extension lines of scattered light beams received by a plurality of scattered lightthrough holes and is used for absorbing and reflecting the scattered light beams at the complementary angle of a measurement receiving angle, so that the scattered light beams cannot reach the junction of the wall surface of the matching tank and the air to be reflected. By means of the matching liquid, the first light blocking structure and the second light blocking structure, the influence of reflection light on the wall surface of a sample pool in the traditional nanoparticle particle size measurement system can be greatly reduced, and reflection light information is prevented from being mixed into the scattered light signals at the receiving angle of the plurality of scattered light through holes, so that the accuracy of the measurement result is greatly improved.

Description

technical field [0001] The present application relates to the field of measurement technology, in particular to a system for measuring the particle size of nanoparticles. Background technique [0002] The particle size measurement of nanoparticles mainly includes electron microscopy and a variety of dynamic light scattering nanoparticle particle size measurement methods developed based on the theory of dynamic light scattering. This motion of particles is called Brownian motion. When the nanoparticles do Brownian motion in the liquid, the light scattered by the nanoparticles will pulsate. Since the pulsation frequency is related to the diffusion coefficient of nanoparticles, and the diffusion coefficient is related to the particle size of nanoparticles, the dynamic light scattering method can be used to measure the particle size of nanoparticles. [0003] However, in the traditional nanoparticle size measurement system, the beam after the incident beam passes through the s...

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Application Information

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IPC IPC(8): G01N15/02
CPCG01N15/0211G01N2015/0222
Inventor 黄鹭高思田施玉书李伟李琪
Owner NAT INST OF METROLOGY CHINA
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