CN206132611U - Alcohol concentration optical fiber sensor based on oxidation graphite alkene - Google Patents
Alcohol concentration optical fiber sensor based on oxidation graphite alkene Download PDFInfo
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- CN206132611U CN206132611U CN201621194450.XU CN201621194450U CN206132611U CN 206132611 U CN206132611 U CN 206132611U CN 201621194450 U CN201621194450 U CN 201621194450U CN 206132611 U CN206132611 U CN 206132611U
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- light
- alcohol concentration
- change
- graphene oxide
- spectrophotometer
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- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The utility model discloses an alcohol concentration optical fiber sensor based on oxidation graphite alkene comprises tungsten lamp, spectrophotometer, multimode fiber, computer, cell, wherein multimode fiber contains two tapered fiber sensing head structures, has plated oxidation graphene films on two tapered fiber sensing heads. Oxidation graphene films has very regular cellular texture because of its surface for this material absorbs organic molecule very easily. Oxidation graphene films absorbs ethanol molecule inflation, and release then can the deswelling, and corresponding refracting index also can change. After light passed through two tapered fiber sensing heads, the light of most low order modes was revealed, and the light of higher order mode is because the change between external refracting index and the fiber core refractive index produces in various degree revealing, and partial mode light hardly satisfies the total reflection condition, passs through the fluorescence light intensity through the monitoring, can obtain the change volume of refracting index to reach the change of surveying external concentration, provide a realistic plan for alcohol concentration's detection.
Description
Technical field
The utility model proposes the alcohol concentration Fibre Optical Sensor based on graphene oxide, belongs to optical fiber sensing technology neck
Domain.
Background technology
Graphene is a kind of new two-dimentional material with carbon element, with specific surface area it is big, that heat conductivity is high, mechanical strength is big etc. is excellent
Benign energy.Graphene oxide belongs to the most important derivant of Graphene, and it generally has very big in the sensory field of electrochemistry
Development space.
Graphene oxide can detect different types of chemical substance such as ethanol, and it has higher thermal conductivity,
Very high surface-to-volume ratio.Double-tapered fiber sensor probe is set to plate graphene oxide by the method for heated drying thin
Film so as to can firmly adsorb in optical fiber surface, can be made into ethanol Fibre Optical Sensor for detecting the ethanol of variable concentrations.
The content of the invention
For the deficiencies in the prior art, the purpose of this utility model is to propose based on the alcohol concentration light of graphene oxide
Fiber sensor, the freeze-day with constant temperature for carrying out certain hour by the graphene oxide to absorption on bipyramid sensor probe surface is processed,
Graphene oxide film can be uniformly plated in the side surface of sensing arrangement.The thin film has Absorption to Organic substance, absorbs swollen
Characteristic that is swollen and being dried deswelling, corresponding film refractive index also can change, and be that the detection of alcohol concentration proposes one kind
New scheme.
The utility model proposes the alcohol concentration Fibre Optical Sensor based on graphene oxide, it is characterised in that：By tungsten lamp
(1), spectrophotometer (2), multimode fibre (3), computer (6), cuvette (7) are constituted；Wherein multimode fibre (3) contains biconial
Optical fiber sensor head (5) structure, is coated with graphene oxide film (4) on double-tapered fiber sensing head (5)；Tungsten lamp (1) and multimode light
Fine (3) left side is connected, and multimode fibre (3) right side is connected with spectrophotometer (2) light-emitting window, computer (6) and spectrophotometer (2)
Data terminal is connected, and cuvette (7) is in spectrophotometer (2).
The cladding diameter of described multimode fibre (3) is 125 μm, and core diameter is 62.5 μm.
Described multimode fibre (3) waist cone is a diameter of 50 μm, and length is 5mm.
Described double-tapered fiber sensing head (5) is placed in cuvette (7), and is totally submerged the sensing with ethanol solution
Head.
Operation principle of the present utility model is：Incident illumination when through the big end of double-tapered fiber sensing head (5) to small end,
Angle of incidence of the light on fibre core and clad interface reduces with the increase of order of reflection, for the optical fiber of certain communication mode
Characteristic angle gradually increases with the increase of order of reflection, from refraction theorem：
Wherein δ represents the cone angle of conical fiber, and n represents refraction number of times.
β=n1k0cosθn (3)
β represents propagation constant in formula (3), it can be seen that when light from the small end of double-tapered fiber sensing head (5) to
Can increase with the increase of reflection during big end transmission, light also has low order mode to change to higher mode, and total reflection condition is not easy
Reach, a part of light can be leaked out.Light often reflects between fibre core and covering will once change Once dissemination pattern.
This utility model uses graphene oxide film (4), because there is fairly regular alveolate texture on its surface.
Therefore, the material is easy to absorb organic molecule.Graphene oxide film (4) absorbs ethanol molecule and can expand, and release then can disappear
Swelling, corresponding refractive index also can change.Spectrum passes through after double-tapered fiber sensing head (5), the light of most low step modes
Reveal, the light of higher order mode is due to the different degrees of leakage of the change generation between extraneous refractive index and ray refractive index, part
Mode light is difficult to meet total reflection condition, by the variable quantity for monitoring transmitted spectrum light intensity, can obtain the knots modification of refractive index,
So as to reach the change of the extraneous concentration of detection.
The beneficial effects of the utility model are：Propose that particularly sensitive graphene oxide film will be changed to chemical substance
(4) as sensitive membrane, the sensor sensitivity that to external world alcohol concentration changes will be remarkably reinforced, and be that the detection of ethanol is proposed
A kind of easy, method that efficient, sensitivity is high.
Description of the drawings
Fig. 1 is the alcohol concentration Fibre Optical Sensor characterizing arrangement schematic diagram based on graphene oxide of the present utility model.
Fig. 2 is biconical fiber structure chart of the present utility model.
Fig. 3 is that fluorescence intensity of the optical fiber for not plating graphene oxide film of the present utility model in different alcohol concentrations is intended
Close curve chart.
Fig. 4 is the fluorescence intensity for being coated with the optical fiber of graphene oxide film under different alcohol concentrations of the present utility model
Matched curve figure.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is described in further detail with specific embodiment.
Referring to accompanying drawing 1, based on the biconical fiber structure chart of the alcohol concentration Fibre Optical Sensor of graphene oxide, its feature exists
In：It is made up of tungsten lamp (1), spectrophotometer (2), multimode fibre (3), computer (6), cuvette (7)；Wherein multimode fibre (3)
Containing double-tapered fiber sensing head (5) structure, graphene oxide film (4), tungsten lamp are coated with double-tapered fiber sensing head (5)
(1) with multimode fibre (3) left side be connected, multimode fibre (3) right side be connected with spectrophotometer (2) light-emitting window, computer (6) and divide
Light photometer (2) data terminal is connected, and cuvette (7) is in spectrophotometer (2).Double-tapered fiber sensing head (5) utilizes multimode
Optical fiber (3) is made, and optical fiber to draw cone machining model GXP 3000 of employing is serial, and program is arranged using a drawing interface dish
Single, the physical parameter of taper needed for simple input, the grand generation of low-level Mechanical course can automatically draw target size.
In this utility model, by the method for heated drying so that double-tapered fiber sensing head (5) is heated under 70 degrees Celsius
After 20 minutes, by the graphene oxide submergence of the 1mg/mol conical position, then double-tapered fiber sensing head (5) is put back into 70
Heat in the environment of degree Celsius 1 hour and be obtained；It is made using multimode fibre (3) in fig 2, the optical fiber to draw cone machining of employing
Model GXP 3000 is serial, and program is arranged using a drawing interface menu, the physical parameter of taper needed for simple input, and one
The grand generation of individual low-level Mechanical course can automatically draw target size, and the cladding diameter of the multimode fibre (3) after stretching is
125 μm, core diameter is 62.5 μm, and waist cone is a diameter of 50 μm, and lumbar vertebra length is 5mm.It can be seen that transducing part plating in accompanying drawing 4
The fluorescence intensity detected after the graphene oxide of upper 1.0mg/mol presents and significantly successively decreases as the concentration of ethanol increases
Gesture, and the sensing arrangement of accompanying drawing 3 fluorescence intensity that no plating graphene oxide is not detected under identical condition then seems miscellaneous
Disorderly without chapter.
Claims (3)
1. the alcohol concentration Fibre Optical Sensor of graphene oxide is based on, it is characterised in that：By tungsten lamp (1), spectrophotometer (2),
Multimode fibre (3), computer (6), cuvette (7) are constituted；Wherein multimode fibre (3) containing double-tapered fiber sensing head (5) structure,
Graphene oxide film (4) is coated with double-tapered fiber sensing head (5), tungsten lamp (1) is connected with multimode fibre (3) left side, multimode
Optical fiber (3) right side is connected with spectrophotometer (2) light-emitting window, and computer (6) is connected with spectrophotometer (2) data terminal, cuvette
(7) in spectrophotometer (2).
2. the alcohol concentration Fibre Optical Sensor based on graphene oxide according to claim 1, it is characterised in that：Described
The cladding diameter of multimode fibre (3) is 125 μm, and core diameter is 62.5 μm.
3. the alcohol concentration Fibre Optical Sensor based on graphene oxide according to claim 1, it is characterised in that：Described
Multimode fibre (3) waist cone is a diameter of 50 μm, and length is 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621194450.XU CN206132611U (en) | 2016-11-02 | 2016-11-02 | Alcohol concentration optical fiber sensor based on oxidation graphite alkene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621194450.XU CN206132611U (en) | 2016-11-02 | 2016-11-02 | Alcohol concentration optical fiber sensor based on oxidation graphite alkene |
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| Publication Number | Publication Date |
|---|---|
| CN206132611U true CN206132611U (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621194450.XU Expired - Fee Related CN206132611U (en) | 2016-11-02 | 2016-11-02 | Alcohol concentration optical fiber sensor based on oxidation graphite alkene |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106442409A (en) * | 2016-11-02 | 2017-02-22 | 中国计量大学 | Alcohol concentration optical fiber sensor based on graphene oxide |
| CN111257285A (en) * | 2020-03-11 | 2020-06-09 | 西安石油大学 | Optical fiber sensor and preparation method thereof |
-
2016
- 2016-11-02 CN CN201621194450.XU patent/CN206132611U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106442409A (en) * | 2016-11-02 | 2017-02-22 | 中国计量大学 | Alcohol concentration optical fiber sensor based on graphene oxide |
| CN111257285A (en) * | 2020-03-11 | 2020-06-09 | 西安石油大学 | Optical fiber sensor and preparation method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 Termination date: 20211102 |
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| CF01 | Termination of patent right due to non-payment of annual fee |