CN113030054A - Hollow multilayer film for gas concentration detection and preparation method thereof - Google Patents
Hollow multilayer film for gas concentration detection and preparation method thereof Download PDFInfo
- Publication number
- CN113030054A CN113030054A CN202110312519.3A CN202110312519A CN113030054A CN 113030054 A CN113030054 A CN 113030054A CN 202110312519 A CN202110312519 A CN 202110312519A CN 113030054 A CN113030054 A CN 113030054A
- Authority
- CN
- China
- Prior art keywords
- layer
- film
- film layer
- gas concentration
- gain
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000002356 single layer Substances 0.000 claims abstract description 42
- 239000012528 membrane Substances 0.000 claims abstract description 14
- 239000010410 layer Substances 0.000 claims description 107
- 239000000758 substrate Substances 0.000 claims description 16
- 230000003287 optical effect Effects 0.000 claims description 13
- 239000001856 Ethyl cellulose Substances 0.000 claims description 11
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims description 11
- 229920001249 ethyl cellulose Polymers 0.000 claims description 11
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 11
- 239000011521 glass Substances 0.000 claims description 11
- 239000004793 Polystyrene Substances 0.000 claims description 9
- 229920002223 polystyrene Polymers 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 7
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 230000010287 polarization Effects 0.000 claims description 5
- 238000004528 spin coating Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- NJDNXYGOVLYJHP-UHFFFAOYSA-L disodium;2-(3-oxido-6-oxoxanthen-9-yl)benzoate Chemical compound [Na+].[Na+].[O-]C(=O)C1=CC=CC=C1C1=C2C=CC(=O)C=C2OC2=CC([O-])=CC=C21 NJDNXYGOVLYJHP-UHFFFAOYSA-L 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000010791 quenching Methods 0.000 abstract description 15
- 230000000171 quenching effect Effects 0.000 abstract description 15
- 230000035945 sensitivity Effects 0.000 abstract description 9
- 239000012491 analyte Substances 0.000 abstract description 5
- 230000002457 bidirectional effect Effects 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 125
- 239000007789 gas Substances 0.000 description 21
- 230000004044 response Effects 0.000 description 5
- 238000000295 emission spectrum Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- GNBHRKFJIUUOQI-UHFFFAOYSA-N fluorescein Chemical compound O1C(=O)C2=CC=CC=C2C21C1=CC=C(O)C=C1OC1=CC(O)=CC=C21 GNBHRKFJIUUOQI-UHFFFAOYSA-N 0.000 description 2
- 229940020947 fluorescein sodium Drugs 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 238000001338 self-assembly Methods 0.000 description 1
- 238000011896 sensitive detection Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
- G01N21/643—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes" non-biological material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N2021/6417—Spectrofluorimetric devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
- G01N2021/6432—Quenching
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention belongs to the technical field of gas concentration detection, and particularly relates to a hollow multilayer film for gas concentration detection and a preparation method thereof. Due to the use of the hollow multilayer membrane, the probability of analyte molecules diffusing into the membrane through the channels is greatly increased. And meanwhile, the bidirectional permeation is performed for many times, which is superior to the unidirectional permeation from the surface of a single-layer film. Therefore, the invention obviously improves the quenching efficiency, obtains extremely high sensitivity and can also greatly improve the detection speed of the gas concentration.
Description
Technical Field
The invention belongs to the technical field of gas concentration detection, and particularly relates to a hollow multilayer film for gas concentration detection and a preparation method thereof.
Background
Organic solid-state lasers based on thin films have great potential in the fields of photonic devices and sensitive detection platforms. The laser action of small molecules and semiconducting organic polymers is opening the door to a new gas detection method. This is because high sensitivity can be produced by utilizing the amplification characteristic of the laser action. Is an effective enhancement mechanism to amplify the difference in radiation caused by non-radiative deactivation, which is quenched by electron transfer mechanisms or other interactions when the analyte binds to the surface of the membrane. Therefore, as the proportion of the inactivation in the entire film increases, the sensitivity also increases. To date, all sensing devices for sensitive gas detection have been based on single layer membranes, and the thickness of the membrane has been reduced to achieve high sensitivity and sensing efficiency.
The method of reducing the thickness of a single layer film in order to obtain high sensitivity is limited, mainly because the thickness of the film determines the optical storage capacity of the optical feedback structure. Therefore, the sensitivity of sensing detection is limited, and the most fatal weakness is that if the film thickness is lower than the normal level of laser generation, laser action is not easily generated, resulting in failure of sensing detection. Furthermore, as the thickness of the monolayer film decreases, the requirements for laser pumping energy become higher and higher, and one limitation of these organic materials is the lack of durability under the harsh conditions of high pumping power, which is necessary for many sensing applications. It is worth mentioning that if the organic matter is not resistant to high temperature, it will be damaged under high pumping energy, and the detection will also fail. In addition, in order to reduce the pump power and improve the sensitivity with a reduced single layer film thickness, high Q optical feedback structures, such as DFB and micro-loops, are currently required. However, these optical feedback structures still do not fully compensate for the inherent deficiencies of single layer films, while being incompatible with simple manufacturing and good beam quality.
Fabry-perot (FP) cavity structures exhibit many advantages in the field of optoelectronics, such as ease of implementation, provision of bulk interaction between the electromagnetic field and the gain medium, and good beam quality with some directionality. They also have flexibility and compatibility with generally simple processing techniques, however, to date, FP cavities limited by Q-factor have not been introduced into thin film lasers to enable detection of gases.
Furthermore, for gas concentration detection based on a solid state laser, the accuracy of detection is related to the number of gain media and their quenching efficiency. The single layer film is used as a gain medium, if the single layer film is too thin, the quenching efficiency is theoretically high, but the gain medium in the film is too little, and the detection purpose is difficult to achieve. If the thickness is too thick, the detection can be achieved, but the detection precision is low.
Disclosure of Invention
The invention overcomes the defects of the prior art, and solves the technical problems that: a hollow multi-layer film for detecting gas concentration and a preparation method thereof are provided to improve the accuracy and efficiency of gas concentration detection.
In order to solve the technical problems, the invention adopts the technical scheme that: a hollow multilayer film for detecting gas concentration comprises a plurality of single-layer gain film layers and a support film layer arranged between the single-layer gain film layers, wherein a strip-shaped channel penetrating the support film layer deeply is arranged on the support film layer.
The single-layer gain film layer is made of materials with the mass ratio of 100: 0.6-100: 1.4, mixing the ethyl cellulose with sodium fluorescein, wherein the material of the support body film layer is the ethyl cellulose.
The width 200um 20um of bar passageway.
The thickness of the support body film layer is 9-15 times of that of the single-layer gain film layer.
The number of the single-layer gain film layers is 5-20.
In addition, the invention also provides a preparation method of the hollow multilayer film for detecting the gas concentration, which comprises the following steps:
s1, respectively spin-coating and spin-coating a sacrificial layer on the two glass substrates, then respectively preparing a single-layer gain film layer and a support film layer on the sacrificial layer, and scribing a strip-shaped channel on the support film layer;
s2, peeling the single gain film layer and the support film layer from the glass substrate;
and S3, alternately stacking the single gain film layers and the support film layers, alternately depositing the single gain film layers and the support film layers on the film-coated substrate, aligning the strip-shaped channels on the support film layers, drying the strip-shaped channels, and adhering the strips to form the hollow multilayer film.
In the step S1, the sacrificial layer is made of polystyrene;
in step S2, the glass substrate obtained in step S1 is placed in cyclohexane, so that the polystyrene sacrificial layer is dissolved in cyclohexane, and the single gain film layer and the support film layer are released from the polystyrene sacrificial layer, thereby obtaining the single gain film layer and the support film layer.
The invention further provides a gas concentration detection device, which comprises the hollow multilayer film, a solid laser, an optical component, a spectrometer and an FP cavity, wherein the hollow multilayer film is arranged in the FP cavity, light emitted by the solid laser enters the FP cavity after passing through the optical component, and laser emitted by the FP cavity is collected by the spectrometer and analyzed.
The optical assembly comprises a diaphragm, a half wave plate, a polarization beam splitter prism and a biconvex lens.
Compared with the prior art, the invention has the following beneficial effects: the invention provides a hollow multilayer film for detecting gas concentration and a preparation method thereof, which adopts a hollow multilayer film comprising a single-layer gain film layer and a support film layer, wherein a strip-shaped channel is arranged in the support film layer, the possibility that analyte molecules enter the film through diffusion of the channel is greatly improved, and the hollow multilayer film can perform multiple bidirectional permeation simultaneously and is superior to the unidirectional permeation from the surface of a single-layer film, so that the quenching efficiency is obviously improved, and the extremely high sensitivity is obtained.
Drawings
Fig. 1 is a schematic structural diagram of a hollow multi-layer film for gas concentration detection according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of the fabrication of a single layer gain film and a support film in an embodiment of the invention;
FIG. 3 is a schematic view of a hollow multi-layer film according to a second embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a gas concentration detection apparatus according to a third embodiment of the present invention;
FIG. 5 is a plot of the integral of emission spectra as a function of pump energy density for samples before quenching and after complete quenching for a 2700nm thick monolayer film and a 270 nm thick hollow multilayer film;
FIG. 6 is laser emission spectra of 2700nm thick single layer film and 270 nm thick hollow multi-layer film at two times the threshold pump energy for different response times (0s, 360s, 720s and 840 s);
FIG. 7 is a graph of fluorescence sensing efficiency as a function of the number of thin films.
In the figure: the laser comprises a solid laser 1, a diaphragm 2, a half wave plate 3, a polarization beam splitter prism 4, a beam splitter prism 5, a reflector 6, a lenticular lens 7, an FP (Fabry-Perot) cavity 8, a hollow multilayer film 9, a coated substrate 91, a single-layer gain film 92, a support film 93, a strip channel 94, a sacrificial layer 95 and a glass substrate 96.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1, an embodiment of the present invention provides a hollow multilayer film for gas concentration detection, including a coated substrate 91, on which a single-layer gain film layer 92 and a support film layer 93 are alternately disposed, and on the support film layer 93, a strip-shaped channel 94 is disposed, which penetrates the support film layer deeply.
Specifically, in the present embodiment, the single gain film layer 92 is made of a mixture of Ethyl Cellulose (EC) and fluorescein sodium in a mass ratio of 100:0.6 to 100:1.4, and further, the mass ratio is preferably 100:1. The support film layer 93 is made of ethyl cellulose.
Specifically, in the present embodiment, the strip-shaped channel 94 is disposed at the center of the support film layer 93, and has a width of 200um ± 20um and a length of 15mm ± 3mm, and in addition, the length of the strip-shaped channel can be adjusted according to the size of the support film layer 93 as long as the strip-shaped channel does not separate the film layer. The thickness of the support film layer 93 is 9-15 times of that of the gain film layer. The thickness of the single-layer gain film may be several tens to several hundreds nm.
Specifically, in this embodiment, the number of the single gain film layers 92 and the number of the support film layers 93 may be set as required, for example, the number of the single gain film layers may be 5 to 20, where the number of the single gain film layers 92 is one more than that of the support film layers 93.
Example two
The embodiment provides a preparation method of a hollow multilayer film for detecting gas concentration, which comprises the following steps:
s1, as shown in fig. 2, two kinds of films were respectively spin-coated on two kinds of glass substrates: a single-layer gain film (thickness 270 nm) and a support film (thickness 2.8 μm) consisting of Ethyl Cellulose (EC). Before this, a layer of Polystyrene (PS) was first spin-coated as a sacrificial layer on a substrate glass substrate in order to strip the prepared film. Subsequently, a channel having a width of 200 μm was scribed on the support film to a depth penetrating the support film and the sacrificial layer. Wherein, the single-layer gain film is formed by mixing Ethyl Cellulose (EC) with 1% of fluorescein sodium in a mass ratio of 100:1.
S2, peeling the single-layer gain film layer 92 and the support film layer 93 from the glass substrate; the stripping method comprises the following steps: the glass substrate obtained in step S1 is placed in cyclohexane, so that the polystyrene sacrificial layer is dissolved in cyclohexane, and the single-layer gain film layer 92 and the support film layer 93 are released from the polystyrene sacrificial layer, so as to obtain the single-layer gain film layer 92 and the support film layer 93.
S3, self-assembly: as shown in fig. 3, the single gain film layers 92 and the support film layers 93 are alternately stacked to be alternately deposited on the coated base sheet 91 with the strip-shaped channels 94 on all the support film layers 93 aligned, and then dried to be self-adhered to form a hollow multilayer film as shown in fig. 1.
EXAMPLE III
As shown in fig. 4, the present embodiment provides a gas concentration detection apparatus, which includes a solid-state laser 1, an optical component, a spectrometer, and an FP cavity 8, where a hollow multilayer film 9 is disposed in the FP cavity 8 as a gain medium, and the structure of the FP cavity is as shown in fig. 1, light emitted by the solid-state laser 1 enters the FP cavity 8 after passing through the optical component, and laser emitted by the FP cavity is collected by the spectrometer 10 and analyzed.
Specifically, in the present embodiment, the optical assembly includes a diaphragm 2, a half-wave plate 3, a polarization splitting prism 4, and a lenticular lens 7. Laser emitted by the solid laser 1 passes through the diaphragm 2, the half-wave plate 3, the polarization beam splitter prism 4 and the biconvex lens 7 and then enters the FP cavity 8, and the laser incidence direction is vertical to the film plane direction of the hollow multilayer film 9.
The hollow multi-layer film was compared with the single-layer film prepared by the spin coating method in terms of both emission intensity response and time response, as measured by the apparatus shown in fig. 4. Wherein the parameters of the hollow multilayer film are as follows: the gain membrane comprises 10 single-layer gain membrane layers and 9 support membrane layers, wherein the 9 support membrane layers are positioned between the 10 single-layer gain membrane layers and are alternately arranged. The thickness of the single-layer gain film layer is 270 nm, the thickness of the film layer of the support body film layer is 2.8 mu m, and the width of the channel is 200 um. The thickness of the monolayer film was 2700 nm.
The experimental steps are as follows:
1, detecting the threshold value of the sample by a spectrometer before introducing no gas.
After obtaining the threshold, the energy of the pump light was adjusted to twice the threshold, and the laser intensity at that time was recorded (0 second in the figure).
And 3, introducing gas. Data is recorded at intervals.
Fig. 5 shows the integral of the emission spectrum of the sample before and after quenching as a function of the pump energy density. For a monolayer film of 2700nm thickness, the laser threshold before and after quenching is from 20.5uJ/mm2Increased to 28.5uJ/mm2The threshold was raised 1.425 times (a in fig. 5). For a hollow multilayer film with a monolayer thickness of 270 nm, the laser threshold before quenching and after complete quenching is 51uJ/mm2Increased to 316uJ/mm2The threshold value is increased by 264 uJ/mm2(B in FIG. 5).
Fig. 6 shows laser emission spectra for single layer films (a in fig. 6) and hollow multilayer films (B in fig. 6) of 2700nm thickness at different response times (0s, 360s, 720s, and 840s) at twice the threshold pump energy. As the response time increases, the laser intensity decreases, and after a certain time (720 s), the laser intensity does not change. The results show that the complete quenching times of both films are the same. And after complete exposure, the laser intensity of the hollow multilayer film is zero, which indicates that the multilayer film structure is quenched more thoroughly. I.e. the structure of the hollow multilayer film is better.
To be provided with
The intensity of the emission before quenching is indicated,
indicating the emission intensity after quenching. The calculation formula is as follows:
where A is a constant, P is the pump beam density, and Q is the quenching efficiency. α is the absorption coefficient at the pump wavelength and d is the thickness of each film. z is the penetration depth of the analyte molecules in each membrane. n is the number of layers of the single gain film layer 92.
The expression of the sensing efficiency η is:
fig. 7 shows the dependence of fluorescence sensing efficiency on the number of films for α =0.00003672, Q =100%, and z =70 nm. It can be seen that the hollow multilayer film of the present invention has better sensing efficiency than the single layer film.
In summary, the present invention provides a hollow multi-layer film for detecting gas concentration and a method for preparing the same, wherein the hollow multi-layer film is adopted, so that the possibility of analyte molecules diffusing into the film through the channel is greatly improved. And meanwhile, the bidirectional permeation is performed for many times, which is superior to the unidirectional permeation from the surface of a single-layer film. Therefore, the invention obviously improves the quenching efficiency and obtains extremely high sensitivity.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The hollow multilayer film for detecting the gas concentration is characterized by comprising a plurality of single-layer gain film layers (92) and a support film layer (93) arranged between the single-layer gain film layers (92), wherein strip-shaped channels (94) penetrating the support film layer deeply are arranged on the support film layer (93).
2. The hollow multilayer film for detecting gas concentration as claimed in claim 1, wherein the single gain film layer (92) is made of materials with a mass ratio of 100: 0.6-100: 1.4, the ethyl cellulose is mixed with sodium fluorescein, and the material of the support film layer (93) is the ethyl cellulose.
3. The hollow multi-layer membrane for gas concentration detection according to claim 1, wherein the width of the strip-shaped channel (94) is 200um ± 20 um.
4. The hollow multilayer film for gas concentration detection according to claim 1, wherein the thickness of the support membrane layer (93) is 9 to 15 times the thickness of the single gain membrane layer (92).
5. The hollow multilayer film for gas concentration detection according to claim 1, wherein the number of the single gain film layers (92) is 5 to 20.
6. A preparation method of a hollow multilayer film for detecting gas concentration is characterized by comprising the following steps:
s1, respectively spin-coating and spin-coating a sacrificial layer on the two glass substrates, then respectively preparing a single-layer gain film layer (92) and a support film layer (93) on the sacrificial layer, and scribing a strip-shaped channel (94) on the support film layer (93);
s2, peeling the single-layer gain film layer (92) and the support film layer (93) from the glass substrate;
s3, alternately stacking the single-layer gain film layer (92) and the support film layer (93) to be alternately deposited on the coated substrate (91), aligning the strip-shaped channels (94) on the support film layer (93), and then drying and self-adhering to form the hollow multilayer film.
7. The method according to claim 6, wherein in step S1, the sacrificial layer is made of polystyrene;
in step S2, the glass substrate obtained in step S1 is placed in cyclohexane, so that the polystyrene sacrificial layer is dissolved in the cyclohexane, and the single gain film layer (92) and the support film layer (93) are released from the polystyrene sacrificial layer, thereby obtaining the single gain film layer (92) and the support film layer (93).
8. A gas concentration detection device, which comprises the hollow multilayer film of any one of claims 1 to 5, and further comprises a solid laser (1), an optical component, a spectrometer and an FP cavity (8), wherein the hollow multilayer film is arranged in the FP cavity (8), light emitted by the solid laser (1) enters the FP cavity (8) after passing through the optical component, and laser emitted by the FP cavity is collected and analyzed by the spectrometer (10).
9. The gas concentration detection apparatus according to claim 8, wherein the optical assembly includes a diaphragm (2), a half-wave plate (3), a polarization splitting prism (4), and a lenticular lens (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110312519.3A CN113030054B (en) | 2021-03-24 | 2021-03-24 | Hollow multilayer film for detecting gas concentration and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110312519.3A CN113030054B (en) | 2021-03-24 | 2021-03-24 | Hollow multilayer film for detecting gas concentration and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113030054A true CN113030054A (en) | 2021-06-25 |
| CN113030054B CN113030054B (en) | 2024-01-30 |
Family
ID=76473247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110312519.3A Active CN113030054B (en) | 2021-03-24 | 2021-03-24 | Hollow multilayer film for detecting gas concentration and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113030054B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040076204A1 (en) * | 2002-10-16 | 2004-04-22 | Kruschwitz Brian E. | External cavity organic laser |
| US20100098126A1 (en) * | 2008-10-21 | 2010-04-22 | Kenneth Singer | Co-extruded multilayer polymers films for all-polymer lasers |
| CN104698531A (en) * | 2015-02-10 | 2015-06-10 | 山东交通学院 | Device and method for preparing long-periodic fiber bragg grating by femtosecond laser Talbot effect |
| CN104831363A (en) * | 2015-04-24 | 2015-08-12 | 中国科学技术大学先进技术研究院 | Three-dimensional photonic crystals based on polymer thin film layer |
| BR102014022045A2 (en) * | 2014-09-05 | 2016-04-26 | Vitopel Do Brasil Ltda | Multilayer bioriented polypropylene film, use of a multilayer bioriented polypropylene film and product |
| CN105668559A (en) * | 2016-01-29 | 2016-06-15 | 中国科学院重庆绿色智能技术研究院 | Method for preparing graphene films on multiple substrates in batch |
| CN107887787A (en) * | 2017-12-19 | 2018-04-06 | 东南大学 | A kind of flexible quanta accidental laser based on PDMS polymer |
| CN108808448A (en) * | 2018-06-12 | 2018-11-13 | 南京邮电大学 | A kind of organic laser thin-film device and preparation method thereof |
| CN109580725A (en) * | 2018-12-10 | 2019-04-05 | 华中科技大学 | Two-dimentional transient metal sulfide gas sensor and preparation based on antenna structure |
| CN109580585A (en) * | 2019-01-07 | 2019-04-05 | 重庆大学 | Characteristic of transformer gas Raman spectrum detection device and detection method |
| CN111603945A (en) * | 2020-06-08 | 2020-09-01 | 天津工业大学 | Ionic liquid functionalized cerium fluoride porous nanosheet, preparation method and application thereof, mixed matrix membrane, preparation method and application thereof |
-
2021
- 2021-03-24 CN CN202110312519.3A patent/CN113030054B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040076204A1 (en) * | 2002-10-16 | 2004-04-22 | Kruschwitz Brian E. | External cavity organic laser |
| US20100098126A1 (en) * | 2008-10-21 | 2010-04-22 | Kenneth Singer | Co-extruded multilayer polymers films for all-polymer lasers |
| BR102014022045A2 (en) * | 2014-09-05 | 2016-04-26 | Vitopel Do Brasil Ltda | Multilayer bioriented polypropylene film, use of a multilayer bioriented polypropylene film and product |
| CN104698531A (en) * | 2015-02-10 | 2015-06-10 | 山东交通学院 | Device and method for preparing long-periodic fiber bragg grating by femtosecond laser Talbot effect |
| CN104831363A (en) * | 2015-04-24 | 2015-08-12 | 中国科学技术大学先进技术研究院 | Three-dimensional photonic crystals based on polymer thin film layer |
| CN105668559A (en) * | 2016-01-29 | 2016-06-15 | 中国科学院重庆绿色智能技术研究院 | Method for preparing graphene films on multiple substrates in batch |
| CN107887787A (en) * | 2017-12-19 | 2018-04-06 | 东南大学 | A kind of flexible quanta accidental laser based on PDMS polymer |
| CN108808448A (en) * | 2018-06-12 | 2018-11-13 | 南京邮电大学 | A kind of organic laser thin-film device and preparation method thereof |
| CN109580725A (en) * | 2018-12-10 | 2019-04-05 | 华中科技大学 | Two-dimentional transient metal sulfide gas sensor and preparation based on antenna structure |
| CN109580585A (en) * | 2019-01-07 | 2019-04-05 | 重庆大学 | Characteristic of transformer gas Raman spectrum detection device and detection method |
| CN111603945A (en) * | 2020-06-08 | 2020-09-01 | 天津工业大学 | Ionic liquid functionalized cerium fluoride porous nanosheet, preparation method and application thereof, mixed matrix membrane, preparation method and application thereof |
Non-Patent Citations (3)
| Title |
|---|
| TAI-SHUNG CHUNG等: "Fabrication of multi-layer composite hollow fiber membranes for gas separation", 《JOURNAL OF MEMBRANE SCIENCE》 * |
| VAISHAKHI MOHANTA等: "Layer-by-Layer Assembled Thin Films and Microcapsules of Nanocrystalline Cellulose for Hydrophobic Drug Delivery", 《ACS APPLIED MATERIALS & INTERFACES》 * |
| 宣理静等: "层层自组装聚电解质多层膜的制备及在膜分离中的应用", 《化学进展》, vol. 18, no. 7 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113030054B (en) | 2024-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhang et al. | Green anti‐solvent processed planar perovskite solar cells with efficiency beyond 19% | |
| CN101665231B (en) | Structure of thin film device manufactured by means of double-faced opposite-penetrated corrosion based on (100) silicon chip and method thereof | |
| US9667035B1 (en) | Method for preparing organic polymer thin film laser | |
| KR101592241B1 (en) | Method of fabricating a device having an array of nano particles, surface plasmon based sensor, and method of assaying substances using the sensor | |
| CN111025690B (en) | Graphene plasmon device for all-optical modulation and preparation method thereof | |
| JP5920734B2 (en) | Transmitted light control device | |
| Geske et al. | Deterministic nucleation for halide perovskite thin films with large and uniform grains | |
| WO2020042259A1 (en) | Display panel and manufacturing method therefor | |
| US20200075861A1 (en) | Resin substrate laminate and manufacturing method for electronic device | |
| CN113030054B (en) | Hollow multilayer film for detecting gas concentration and preparation method thereof | |
| CN109873047A (en) | A kind of novel heterojunction photon type infrared detector and preparation method and application | |
| Farag et al. | Utilizing niobium plasmonic perfect absorbers for tunable near-and mid-IR photodetection | |
| Tian et al. | Triangular Micro‐Grating via Femtosecond Laser Direct Writing toward High‐Performance Polarization‐Sensitive Perovskite Photodetectors | |
| US20070078051A1 (en) | Method for manufacturing electrode layer for fuel cell | |
| CN113336184A (en) | MEMS infrared light source with closed membrane structure and preparation method thereof | |
| Qin et al. | Scalable Graphene‐on‐Organometal Halide Perovskite Heterostructure Fabricated by Dry Transfer | |
| KR101838844B1 (en) | Manufacturing method of the interlayer of solar cell Novel compound and solar cell via stamping transfer | |
| CN107359217A (en) | A kind of quick response ultraviolet light detector and preparation method | |
| EP2802416B1 (en) | Improved patch area cell adhesion | |
| CN113758907A (en) | Gas sensor element and gas detection device using same | |
| Alarslan et al. | Thin patterned lithium niobate films by parallel additive capillary stamping of aqueous precursor solutions | |
| Wang et al. | Fabrication of novel conjugated polymer nanostructure: porphyrins and fullerenes conjugately linked to the polyacetylene backbone as pendant groups | |
| CN109596572B (en) | Gas sensor and preparation method thereof | |
| CN106868461A (en) | A kind of RF board bar CO2Laser electrode method for plating film on surface | |
| Zhao et al. | Novel 3D printing encapsulation strategies for perovskite photodetectors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |