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A micro-quartz hollow tube composite optical fiber structure for detecting glucose concentration

A technology of glucose concentration and hollow tube, which is applied to measurement devices, material analysis by optical means, instruments, etc., can solve the problems of low sensitivity, long detection time, low degree of intelligence, etc., and achieve the effect of improving sensitivity and easy perception.

Active Publication Date: 2018-03-16
NORTHEASTERN UNIV LIAONING
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Problems solved by technology

[0004] The invention solves the problems of long detection time, low sensitivity, and low intelligence in the glucose concentration detection devices commonly used in medicine at present, and provides a composite optical fiber structure of a miniature quartz hollow tube for detecting glucose concentration

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  • A micro-quartz hollow tube composite optical fiber structure for detecting glucose concentration
  • A micro-quartz hollow tube composite optical fiber structure for detecting glucose concentration
  • A micro-quartz hollow tube composite optical fiber structure for detecting glucose concentration

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Embodiment Construction

[0015] The essential features and remarkable progress of the present invention will be clarified below through specific embodiments.

[0016] A micro-quartz hollow tube composite optical fiber structure for detecting glucose concentration. Compared with the traditional glucose concentration detection structure, the optical sensing method is used to realize the rapid detection of glucose concentration. Micron-sized quartz hollow tubes and gold balls are selected as sensing elements. , and introduce the evanescent field effect and the surface plasmon resonance effect to improve the sensor sensitivity. Among them, the evanescent field effect means that when light is incident into the sub-wavelength dielectric waveguide structure, the light wave will not be completely confined in the waveguide, but will escape to the outside of the waveguide and form a light field envelope around the waveguide. the optical evanescent field. Since the evanescent field is in direct contact with the...

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Abstract

The invention discloses a composite optical fiber structure of a miniature quartz hollow tube for detecting glucose concentration, comprising a visible light source 1, a sealed cavity 2, a detector 3, a liquid inlet nozzle 4, a liquid outlet nozzle 5, a coupling lens 6, and an output lens 7 , the first isolation sleeve 8, the second isolation sleeve 9, the micron gold ball 10, and the micron quartz hollow tube 11. The invention improves the sensitivity of the sensor by using the evanescent field effect generated by the light incident on the micron quartz hollow fiber and the surface plasmon resonance effect produced by the light incident on the surface of the micron gold ball. Experimental results show that the structure can continuously measure the change of glucose concentration, has good linearity, and the sensitivity of concentration detection can reach 5.6 μmol / L, which can realize the detection of glucose concentration in blood and body fluids. At the same time, the structure can be integrated into a microchip, reducing the space required to mount the device.

Description

technical field [0001] The invention relates to an integrable high-sensitivity sensing structure for detecting the concentration of micro glucose, in particular to a composite optical fiber structure of a micro quartz hollow tube. Background technique [0002] In recent years, micro-nano-sized optical fiber sensing structures based on evanescent field effects and surface plasmon resonance effects have the advantages of small size, light weight, high sensitivity, and no electromagnetic interference, and have been used to measure refractive index, velocity, pressure, Strain, gas concentration, liquid concentration, and are widely concerned in the fields of biological, chemical and environmental detection. Glucose concentration detection is an important means of human health monitoring and disease diagnosis. At present, the commonly used glucose concentration detection devices in medicine have the disadvantages of long detection time, low sensitivity and low intelligence. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/17
Inventor 李晋张亚男陈飞
Owner NORTHEASTERN UNIV LIAONING
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