Spr sensor cell, and SPR sensor

A sensor element and sensor technology, applied in optical components, instruments, scientific instruments, etc., can solve the problems of fixing the analysis sample to the optical fiber and difficulty in forming a metal film, etc., and achieve the effect of excellent detection sensitivity

Inactive Publication Date: 2013-12-18
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In an SPR sensor including an optical fiber, the tip portion of the optical fiber has a minute cylindrical shape, and thus there are problems in that it is difficult to form a metal thin film and to fix an analysis sample to the optical fiber.

Method used

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  • Spr sensor cell, and SPR sensor
  • Spr sensor cell, and SPR sensor
  • Spr sensor cell, and SPR sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] like image 3 of (a) to image 3 (e), the optical waveguide is formed by using a stamping system. Specifically, a fluorine-based UV-curable resin (“OP38Z” (trade name) produced by DIC Corporation) as a material for forming the under cladding layer was applied to a mold having protrusions corresponding to the core layer forming portions of the under cladding layer , and the resin is cured with ultraviolet rays to form an undercladding layer. The refractive index of the thus obtained lower cladding layer was 1.372. The lower cladding layer had a length of 80 mm, a width of 80 mm, and a thickness of 150 μm, and a groove portion for forming a core layer having a width of 50 μm and a thickness (depth) of 50 μm was formed in the lower cladding layer. After the lower cladding layer is peeled off from the mold, the groove portion is filled with the core layer forming material to form the core layer. By stirring and dissolving 60 parts by weight of a fluorine-based UV curabl...

Embodiment 2

[0069] Except for forming a core layer having a refractive index of 1.399 and a refractive index of 2.90×10 by using a fluorine-based UV-curable resin (“OP40Z” (trade name) produced by DIC Corporation) as a material for forming the core layer -2 (mm -1 ), the SPR sensor element and the SPR sensor were fabricated in the same manner as in Example 1, except for the core layer of the absorption coefficient. The SPR sensor thus obtained was evaluated in the same manner as in Example 1. Table 1 shows the results.

Embodiment 3

[0071] Except that by using 70 parts by weight of UV-curable resin (“FNR-061” produced by Nagase ChemteX Corporation), 30 parts by weight of UV-curable resin (“FNR-062” produced by Nagase ChemteX Corporation) and 1 part by weight of light An acid agent ("CPI-200K" produced by San-Apro Ltd.) was stirred and dissolved to prepare a composition as a material for forming a core layer to form a composition having a refractive index of 1.414 and a refractive index of 8.46×10 -2 (mm -1 ), the SPR sensor element and the SPR sensor were fabricated in the same manner as in Example 1, except for the core layer of the absorption coefficient. The SPR sensor thus obtained was evaluated in the same manner as in Example 1. Table 1 shows the results.

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Abstract

Provided is an SPR sensor cell having exceptional detection accuracy, and an SPR sensor. This SPR sensor cell is equipped with a detection unit, and a sample arrangement portion adjacent to the detection unit. The detection unit has: an underclad layer; a core layer provided so that at least a portion thereof is adjacent to the underclad layer; and a metallic layer covering the core layer. The refractive index of the core layer is at most 1.43, and the absorption index is at most 9.5*10-2(mm-1).

Description

technical field [0001] The present invention relates to SPR sensor elements and SPR sensors. More specifically, the present invention relates to an SPR sensor element comprising an optical waveguide and an SPR sensor. Background technique [0002] So far, surface plasmon resonance (SPR) sensors including optical fibers have been used in chemical analysis, biochemical analysis, and the like. In the SPR sensor including the optical fiber, a metal thin film is formed on the outer peripheral surface of the distal end portion of the optical fiber, and the analysis sample is fixed to the optical fiber to which the light is guided. Among the guided light, light with a specific wavelength generates surface plasmon resonance in the metal thin film, and its light intensity is attenuated. In such an SPR sensor, the wavelength of light generating surface plasmon resonance generally differs according to the refractive index of the analysis sample fixed to the optical fiber. Therefore,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/27G01N21/03
CPCG01N21/03G01N21/553G01N2021/0346G02B6/1226G01N21/41
Inventor 绀谷友广
Owner NITTO DENKO CORP
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