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Liquid refractive index measuring device and system

A liquid refractive index, measuring device technology, applied in the direction of phase influence characteristic measurement, etc., can solve the problems of low measurement accuracy, high measurement cost, complex measurement device, etc., and achieve the effect of high measurement accuracy

Inactive Publication Date: 2020-12-01
刘翡琼
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the measurement accuracy of the above method is generally low, and the measurement device is complicated and the measurement cost is high

Method used

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  • Liquid refractive index measuring device and system
  • Liquid refractive index measuring device and system
  • Liquid refractive index measuring device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] figure 1 A structural diagram of a liquid refractive index measuring device provided for an embodiment of the present invention, such as figure 1 As shown, the measuring device includes a plurality of measuring units arranged periodically. The measurement unit includes a substrate 1 and a dielectric block 2 and a metal block 3 arranged on the substrate 1. The substrate 1 has a rectangular parallelepiped structure, the dielectric block 2 has an L-shaped structure, and the metal block 3 has a rectangular parallelepiped structure. The dielectric block 2 includes four outer sides and two inner sides, each outer side is equal to the side of the substrate corresponding to each outer side, and the two inner sides are perpendicular to each other. The metal block 3 is arranged at the junction of the two inner surfaces. Each measuring unit is fixedly connected through the substrate in each measuring unit. figure 2 Structural diagram of the measuring unit provided for Embodime...

Embodiment 2

[0038] This embodiment provides a liquid refractive index measurement system, including the measurement device in Embodiment 1 and a spectrum measurement device connected thereto. The spectrum measuring device was used to measure the transmission spectrum of the measuring device in Example 1. Wherein, the light emitted by the spectroscopic measurement device is circularly polarized light.

[0039] According to the specific embodiments provided by the invention, the invention discloses the following technical effects:

[0040] (1) The device measures the refractive index of the liquid to be measured by using the difference between the transmission spectrum and the circular dichroism spectrum of the device caused by the liquid to be measured with different refractive indices, and the measurement accuracy is high.

[0041] (2) The device does not need to build a complex optical path, has a simple structure and low measurement cost.

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PUM

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Abstract

The invention relates to a liquid refractive index measuring device and a liquid refractive index measuring system. The measuring device comprises a plurality of periodically arranged measuring units,wherein each measurement unit comprises a substrate, a dielectric block and a metal block, the dielectric block and the metal block are arranged on the substrate, the substrate is of a cuboid structure, the dielectric block is of an L-shaped structure, and the metal block is of a cuboid structure; each dielectric block comprises four outer side faces and two inner side faces, each outer side faceis flush with the side face, corresponding to each outer side face, of the substrate, and the two inner side faces are perpendicular to each other; each metal block is arranged at the junction of twoinner side faces; and the measuring units are fixedly connected through the substrates in the measuring units. According to the device, the characteristic that surface plasmon generated on a chiral structure is extremely sensitive to the surrounding environment is utilized, and when to-be-measured liquid with different refractive indexes is poured into the device, a transmission spectrum and a circular dichroism spectrum of the device can generate very sensitive changes, so that the measurement precision of the device is high.

Description

technical field [0001] The invention relates to the technical field of liquid refractive index measurement, in particular to a liquid refractive index measurement device and system. Background technique [0002] Since the measurement of liquid refractive index can provide important physical, biological and chemical information, it can indirectly obtain other widely used parameters, such as solution concentration, biomedical markers, salinity and fermentation kinetic parameters. The detection method ensures the reliability and real-time performance of detection results, and minimizes sample preparation without fluorescent labeling. In addition, the refractive index can also be used as an indicator to monitor the dynamic change process of the liquid. In many industrial sectors and scientific researches such as chemical industry, medicine, petroleum, etc., it is very necessary and important to measure the refractive index of some liquids. [0003] After long-term research on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/41
CPCG01N21/41
Inventor 不公告发明人
Owner 刘翡琼