CN102928388A - Graphene gas sensor based on surface plasma resonance - Google Patents
Graphene gas sensor based on surface plasma resonance Download PDFInfo
- Publication number
- CN102928388A CN102928388A CN2012104358596A CN201210435859A CN102928388A CN 102928388 A CN102928388 A CN 102928388A CN 2012104358596 A CN2012104358596 A CN 2012104358596A CN 201210435859 A CN201210435859 A CN 201210435859A CN 102928388 A CN102928388 A CN 102928388A
- Authority
- CN
- China
- Prior art keywords
- surface plasma
- graphene
- gas molecule
- sensor based
- resonant vibration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention relates to a graphene gas sensor based on surface plasma resonance. The graphene gas sensor based on the surface plasma resonance comprises a light source system, a total reflection system, a luminous intensity measurement system, a metal film system and a gas molecule adsorption system. After the gas molecule adsorption system adsorbs gas molecules so as to influence conditions of resonance occurred on an interface between the gas molecule adsorption system and the metal film system. The graphene gas sensor has the advantages of being high in detection sensitivity, good in device stability, rapid in response speed, compact in structure, simple in process, low in cost and particularly suitable for low-concentration gas molecule detection.
Description
Affiliated technical field
The present invention relates to gas detecting instrument, particularly utilize photoelectricity instrument meter surface plasma on the interface, whether to resonate to determine the sensor whether gas molecule exists.
Background technology
Graphene (graphene) is the two dimensional crystal that is made of carbon atom, is the basic comprising unit of other material with carbon element allotrope.2004, Andre professor Geim of University of Manchester leader's research group found Graphene and has caused immediately the extensive concern of science and industry member that the discoverer of Graphene has more obtained Nobel Prize in physics in 2010 at first.Because Graphene has high specific surface area (2630m
2/ g), therefore gas molecule is had extraordinary suction-operated.
Surface plasma body resonant vibration (SPR:Surface Plasmon Resonance) is a kind of physical optics phenomenon.Electromagnetic wave (such as light wave) can excitating surface plasma vibration.Surface plasma resonance can be observed by Attenuated Total Reflectance.Owing to will destroy the condition of full emission when producing surface plasma body resonant vibration, cause energy of reflection light sharply to descend, resonance peak appears in reflectance spectrum.This phenomenon is highly susceptible to observation, so surface plasma body resonant vibration obtains widespread use at sensory field.
At present, the gas sensor based on Graphene has been seen in report.Representative implementation is to utilize the variation of Graphene conductivity/resistance before and after adsorption gas molecule to determine whether that gas molecule is attached to the Graphene surface.The device sensitivity that utilizes the method to realize is not high, and need to make conductive electrode at graphene film, and complex process is difficult to accomplish scale production.
Summary of the invention
Not high in order to solve existing Graphene gas sensitivity, the problem of complicated process of preparation the invention provides a kind of Graphene gas sensor based on surface plasma body resonant vibration, and this sensor possesses high detection sensitivity, the simple characteristics of technique.
For reaching above purpose, the technical solution adopted for the present invention to solve the technical problems is: this sensor comprises light-source system, full reflected system, luminous intensity measurement system, metallic film system, gas molecule adsorption system.
The present invention's its specific inductive capacity after the gas molecule adsorption system has been adsorbed gas molecule changes, thereby affects the condition that resonance occurs on the interface between gas molecule adsorption system and the metallic film system.Gas molecule adsorption system and metallic film system join, but form the interface of transfer surface plasma wave, metallic film system and full reflected system join, but form the interface of total reflection, but total reflection forms the interface that the fast ripple that dies will cross total reflection and enters the metallic film system, after the light-source system work, whether surface plasma resonates can be determined according to the output intensity of the measured full reflected system output of luminous intensity measurement system easily; Because the attenuated total reflection curve that the luminous intensity measurement systematic survey arrives can form a sharp-pointed absorption peak under the surface plasma body resonant vibration condition, can be used for accordingly the light concentration gas Molecular Detection.
After adopting above technical scheme, the invention has the beneficial effects as follows: this sensor has high detection sensitivity, and device stability is good, fast response time, and compact conformation, technique is simple, and is with low cost.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is principle of the invention synoptic diagram.
Fig. 2 is structural representation of the present invention.
Fig. 3 is Fig. 2 enlarged drawing.
Among Fig. 2: 1. graphene film, 2. gold film, 3. prism, 4. Graphene-Jin interface, 5. gold-prism boundary, 6. light source, 7. collimating element, 8. charge-coupled device (CCD).
Embodiment
According to shown in Figure 1, a kind of Graphene gas sensor based on surface plasma body resonant vibration of the present invention comprises light-source system, full reflected system, luminous intensity measurement system, metallic film system, gas molecule adsorption system.Functions is described below:
1. light-source system: produce the required incident light of full reflected system;
2. full reflected system: make the incident light that provided by light-source system at full reflected system and the metallic film system formed interface that joins total reflection occur, total reflection forms the fast ripple that dies and will cross the interface and enter golden film;
3. luminous intensity measurement system: measure from the emergent light of full reflected system output;
4. metallic film system: for generation of the key modules of surface plasma body resonant vibration.When the gas molecule adsorption system satisfies certain condition, surface plasma will resonate at metallic film system and the gas molecular adsorption system formed interface that joins;
5. gas molecule adsorption system: the gas molecule that is used for adsorbing environment to be measured.After gas molecule is by the absorption of gas molecule adsorption system, the specific inductive capacity of gas molecule adsorption system itself will change, thereby affect the condition that resonance occurs at the interface surface plasma.
The present invention is after the gas molecule adsorption system has been adsorbed gas molecule, and its specific inductive capacity changes institute and causes that the surface plasma body resonant vibration condition changes, and comes gas molecule is detected.
According to shown in Figure 2, gas molecule adsorption system of the present invention and metallic film system join, but form the interface of transfer surface plasma wave; Metallic film system and full reflected system join, but form the interface of total reflection; But described total reflection forms the interface that the fast ripple that dies will cross total reflection and enters the metallic film system; Described light-source system is the incident light that produces total reflection, is comprised of light source 6 and collimating element 7; Described full reflected system is the material that produces total reflection, is made of a prism 3; Described luminous intensity measurement system is the reflected light of measuring from full reflected system output, is made of charge-coupled device (CCD) 8; Described metallic film system is golden film 2, for generation of the material of surface plasma body resonant vibration; Described gas molecule adsorption system is graphene film 1, for the material of the gas molecule that adsorbs environment to be measured.
Can find out that in Fig. 2 the light-source system of sensor is comprised of light source 6 and light collimating element 7; Full reflected system is a prism 3; The luminous intensity measurement system is made of charge-coupled device (CCD) 8; The metallic film system is golden film 2; The gas molecule adsorption system is graphene film 1.
Its specific inductive capacity changes after graphene film 1 has adsorbed gas molecule, thereby affects the condition that resonance occurs on Graphene-Jin interface 4.Graphene film 1 joins with golden film 2, but forms the interface of transfer surface plasma wave; Gold film 2 joins with prism 3, but forms the interface of total reflection, and total reflection forms the fast ripple that dies and will cross gold-prism boundary 5 and enter golden film 2.After light source 6 work, whether surface plasma resonates can be easily determined according to the output intensity of measured prisms 3 outputs of charge-coupled device (CCD) 8; Because the attenuated total reflection curve that charge-coupled device (CCD) 8 measures can form a sharp-pointed absorption peak under the surface plasma body resonant vibration condition, can be used for accordingly the light concentration gas Molecular Detection.
Claims (6)
1. the Graphene gas sensor based on surface plasma body resonant vibration is characterized in that: comprise light-source system, full reflected system, luminous intensity measurement system, metallic film system, gas molecule adsorption system.
2. a kind of Graphene gas sensor based on surface plasma body resonant vibration according to claim 1, it is characterized in that: after the gas molecule adsorption system has been adsorbed gas molecule, its specific inductive capacity changes institute and causes that the surface plasma body resonant vibration condition changes, and comes gas molecule is detected.
3. a kind of Graphene gas sensor based on surface plasma body resonant vibration according to claim 1, it is characterized in that: described gas molecule adsorption system and metallic film system join, but form the interface of transfer surface plasma wave.
4. a kind of Graphene gas sensor based on surface plasma body resonant vibration according to claim 1, it is characterized in that: described metallic film system and full reflected system join, but form the interface of total reflection.
5. a kind of Graphene gas sensor based on surface plasma body resonant vibration according to claim 1 is characterized in that: enter the metallic film system but described total reflection forms the interface that the fast ripple that dies will cross total reflection.
6. a kind of Graphene gas sensor based on surface plasma body resonant vibration according to claim 1 is characterized in that: described light-source system is the incident light that produces total reflection, is comprised of light source (6) and collimating element (7); Described full reflected system is the material that produces total reflection, is made of prism (3); Described luminous intensity measurement system is the reflected light of measuring from full reflected system output, is made of charge-coupled device (CCD) (8); Described metallic film system is golden film (2), for generation of the material of surface plasma body resonant vibration; Described gas molecule adsorption system is graphene film (1), for the material of the gas molecule that adsorbs environment to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104358596A CN102928388A (en) | 2012-11-06 | 2012-11-06 | Graphene gas sensor based on surface plasma resonance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104358596A CN102928388A (en) | 2012-11-06 | 2012-11-06 | Graphene gas sensor based on surface plasma resonance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102928388A true CN102928388A (en) | 2013-02-13 |
Family
ID=47643240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104358596A Pending CN102928388A (en) | 2012-11-06 | 2012-11-06 | Graphene gas sensor based on surface plasma resonance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102928388A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004698A (en) * | 2015-06-09 | 2015-10-28 | 安徽师范大学 | Novel surface plasmon resonance biosensor |
| CN105538812A (en) * | 2015-12-11 | 2016-05-04 | 深圳大学 | High-sensitivity sensing film and surface plasmon resonance sensing detection system |
| CN109490278A (en) * | 2018-09-10 | 2019-03-19 | 桂林电子科技大学 | The rotary SPR of triangle microprism tests optical chip |
| CN109490279A (en) * | 2018-09-10 | 2019-03-19 | 桂林电子科技大学 | The rotary SPR sensorgram chip of D-shaped microtrabeculae mirror |
| CN111272701A (en) * | 2020-03-03 | 2020-06-12 | 电子科技大学中山学院 | Gas sensor based on metal oxide nanocrystals and use method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110138186A (en) * | 2010-06-18 | 2011-12-26 | 성균관대학교산학협력단 | Surface plasmon resonance sensor containing prism deposited metallic carbon nanostructure layer, and preparing method of the same |
| CN102621104A (en) * | 2012-03-15 | 2012-08-01 | 电子科技大学 | Graphene film sensitized D-shaped optical fiber surface plasmon resonance (SPR) sensor and preparation method thereof |
| CN102680527A (en) * | 2012-05-23 | 2012-09-19 | 哈尔滨工业大学 | Method for preparing graphene gas sensors in batches based on nano soft lithography |
-
2012
- 2012-11-06 CN CN2012104358596A patent/CN102928388A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110138186A (en) * | 2010-06-18 | 2011-12-26 | 성균관대학교산학협력단 | Surface plasmon resonance sensor containing prism deposited metallic carbon nanostructure layer, and preparing method of the same |
| CN102621104A (en) * | 2012-03-15 | 2012-08-01 | 电子科技大学 | Graphene film sensitized D-shaped optical fiber surface plasmon resonance (SPR) sensor and preparation method thereof |
| CN102680527A (en) * | 2012-05-23 | 2012-09-19 | 哈尔滨工业大学 | Method for preparing graphene gas sensors in batches based on nano soft lithography |
Non-Patent Citations (3)
| Title |
|---|
| F. SCHEDIN ET AL: "Detection of individual gas molecules adsorbed on graphene", 《NATURE MATERIALS》 * |
| WU L. ET AL: "Highly sensitive grapheme biosensors based on surface Plasmon resonance", 《OPTICS EXPRESS》 * |
| 宋大千等: "表面等离子体共振传感器Ⅱ：实验装置与仪器", 《分析仪器》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004698A (en) * | 2015-06-09 | 2015-10-28 | 安徽师范大学 | Novel surface plasmon resonance biosensor |
| CN105004698B (en) * | 2015-06-09 | 2018-01-09 | 安徽师范大学 | A kind of Biosensors Based on Surface Plasmon Resonance device |
| CN105538812A (en) * | 2015-12-11 | 2016-05-04 | 深圳大学 | High-sensitivity sensing film and surface plasmon resonance sensing detection system |
| CN109490278A (en) * | 2018-09-10 | 2019-03-19 | 桂林电子科技大学 | The rotary SPR of triangle microprism tests optical chip |
| CN109490279A (en) * | 2018-09-10 | 2019-03-19 | 桂林电子科技大学 | The rotary SPR sensorgram chip of D-shaped microtrabeculae mirror |
| CN111272701A (en) * | 2020-03-03 | 2020-06-12 | 电子科技大学中山学院 | Gas sensor based on metal oxide nanocrystals and use method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102928388A (en) | Graphene gas sensor based on surface plasma resonance | |
| CN104865192B (en) | A kind of optic fibre cantilev microphone and preparation method for optoacoustic spectroscopy detection | |
| CN102621104A (en) | Graphene film sensitized D-shaped optical fiber surface plasmon resonance (SPR) sensor and preparation method thereof | |
| CN103398997A (en) | Rapid preparation method of nano-grade conical SERS active substrate | |
| CN103675460A (en) | Measurement device of capacitive coupling type non-contact conductance based on phase-sensitive demodulation and method thereof | |
| CN101609113A (en) | Non-contact conductivity measuring device and method based on double shield structure and series resonance | |
| CN110186875A (en) | Surface plasmon resonance optical-fiber type pH value measurement method and sensor | |
| Saggu et al. | Ultrasensitive room-temperature NO2 detection using SnS2/MWCNT composites and accelerated recovery kinetics by UV activation | |
| CN103063619A (en) | Graphene molecule sensor based on localized surface plasma resonance | |
| CN202285017U (en) | On-line methane monitoring analyzer | |
| CN103308488A (en) | Monocrystal palladium nanowire surface plasma hydrogen sensor and preparation method and application thereof | |
| CN204302180U (en) | A kind of trace-gas sensors light path system and air chamber | |
| CN204422413U (en) | A kind of fuel tank oxygen concentration testing system | |
| CN203432907U (en) | Graphene molecular sensor based on localized surface plasmon resonance | |
| CN1313824C (en) | Portable gas hydrocarbon detector | |
| CN101504360A (en) | Organic gas sensing method | |
| CN205014967U (en) | Aperture detector | |
| JP5136008B2 (en) | Sensor | |
| CN103743445A (en) | Oxygen flow concentration detection device | |
| CN102937582A (en) | Graphene and attenuated total reflection based gas molecule detection system and detection method using system | |
| CN103557904B (en) | Potential ruler continuous material level measures system and method | |
| Duan et al. | Measurement of the void fraction of gas-liquid two-phase CO 2 flow using laser attenuation techniques | |
| MY164288A (en) | Method for quantitatively detecting 8-oxo 2'-deoxyguanosine in aqueous sample solution with high sensitivity | |
| CN201788144U (en) | Ammonia gas sensor based on nano porous reflecting and sensing materials | |
| CN101819143A (en) | Gas refractive index sensing element and sensing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130213 |