Multi-optical-fiber surface plasm resonance probe with temperature correction

A technology of surface plasma and temperature correction, which is applied in the direction of material analysis, phase influence characteristic measurement, and instrumentation by optical means, which can solve the problems of complex structure, great influence, and large volume.

Inactive Publication Date: 2009-12-09
HENAN AGRICULTURAL UNIVERSITY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

At present, only prism-type SPR sensors have entered the market from the laboratory, but these products have common shortcomings: large volume, complex structure, not easy to carry, high price, especially the ambient temperature has a great influence on the measurement results
At present, only the prism-coupled SPR sensors and analytical instruments produced by Bicore have temperature control to ensure a constant temperature on the surface of the sensor, while the fiber optic SPR sensor is an open test system that cannot, like the prism-coupled SPR sensor, internal Embedded temperature controller

Method used

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  • Multi-optical-fiber surface plasm resonance probe with temperature correction
  • Multi-optical-fiber surface plasm resonance probe with temperature correction
  • Multi-optical-fiber surface plasm resonance probe with temperature correction

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Embodiment

[0013] Example: such as Figure 1-3 In the shown multi-fiber SPR probe with temperature correction, a 30nm-100nm thick Au film 6 is grown on the arc surface of the hemispherical prism 5. In this embodiment, the thickness of the Au film 6 is 50nm, which is not easy if the thickness is too small. If the thickness is too large, it will affect the penetration of light. There are two groups of optical fiber bundles 1, 2 and 3, 4 coupled to the end faces of the prism 5 in the vertical direction, and the corresponding spherical surfaces in the direction vertical to the end faces of the two groups of optical fiber bundles are respectively provided with a biochemically sensitive film 7 and a temperature sensitive film 10, Different thicknesses are set according to specific conditions, within the range of 50 nm to 200 μm. Two groups of optical fiber bundles are respectively located at two groups of light incident points and light reflection points on the end face of the prism 5. One gr...

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Abstract

A multioptical-fiber SPR probe with temperature calibration is prepared for arranging Au film on surface of semispherical prism, setting two sets of optical fiber bundles to be coupled with prism end surface at vertical direction on end surface of said prism, separately curing biochemical sensitive film and temperature sensitive film on spherical Au film in corresponding to vertical end surface directions of two said bundles, using SPR to detect temperature of liquid to be detected in realtime and substituting detected temperature in calibration model to calibrate influence of temperature on test result.

Description

technical field [0001] The invention relates to a temperature-corrected multi-fiber bundle SPR probe, especially an SPR probe with multi-fiber channels that is sensitive to temperature and the object to be measured, effectively solving the problem of SPR detection stability caused by temperature And test accuracy issues, this multi-fiber bundle SPR probe with temperature correction is of great significance in the fields of agricultural environmental protection, biomedicine and food safety. Background technique [0002] Surface plasmon resonance (SPR) is a resonant wave that affects the propagation of electromagnetic waves and is formed on the interface between metals and dielectrics excited by electromagnetic waves. Under the excitation of light waves, an evanescent wave is generated at the interface between the metal and the medium. When the wave vector of the incident light along the direction parallel to the interface is equal to the wave vector of the surface plasmon wav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/41
CPCG01N21/553G01N21/8507
Inventor 胡建东贾伟胡小宁李伟姚传安赵向阳
Owner HENAN AGRICULTURAL UNIVERSITY
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