CN110658152A - Nano-pore or sub-micro-pore film for enhancing surface absorption and method - Google Patents
Nano-pore or sub-micro-pore film for enhancing surface absorption and method Download PDFInfo
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- CN110658152A CN110658152A CN201911005064.XA CN201911005064A CN110658152A CN 110658152 A CN110658152 A CN 110658152A CN 201911005064 A CN201911005064 A CN 201911005064A CN 110658152 A CN110658152 A CN 110658152A
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- film
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- nano
- holes
- nanoporous
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 27
- 230000002708 enhancing effect Effects 0.000 title claims abstract description 18
- 239000011148 porous material Substances 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 238000000862 absorption spectrum Methods 0.000 claims abstract description 6
- 229910052755 nonmetal Inorganic materials 0.000 claims abstract description 6
- 239000004020 conductor Substances 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000007747 plating Methods 0.000 claims description 5
- 239000011343 solid material Substances 0.000 claims description 2
- 239000010408 film Substances 0.000 description 28
- 239000010409 thin film Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 210000002381 plasma Anatomy 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004415 surface enhanced infrared absorption spectroscopy Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000005234 chemical deposition Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012982 microporous membrane Substances 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000010944 silver (metal) Substances 0.000 description 1
- 230000003595 spectral effect Effects 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3577—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing liquids, e.g. polluted water
Abstract
The invention discloses a film with nano holes or sub-micro holes for enhancing surface absorption, which comprises a film substrate with the thickness of micron level, wherein the film substrate is distributed with nano or sub-micron level circular nano holes or sub-micro holes, and the film substrate is plated with a metal or non-metal conductive material. The invention also discloses a method for enhancing surface absorption by using the film with the nano holes or the sub-micro holes, which comprises the following steps: (1) placing the sample on a film, or enabling a solution containing the sample to pass through the film, wherein the liquid part in the solution flows through nano holes or sub-micro holes on the film, solutes with the size larger than the pore size of the nano holes or the sub-micro holes can be enriched on the film, and the sample to be detected can be intensively attached to the film after filtration; (2) placing the film with or attached to the sample to be detected on an objective table; (3) and (4) measuring by using an infrared spectrometer, and collecting the enhanced infrared absorption spectrum signals.
Description
Technical Field
The invention relates to the technical field of optical detection, in particular to a film with nano holes or sub-micro holes for enhancing surface absorption and a method for enhancing surface absorption.
Background
The surface-enhanced infrared absorption means that when a substance with infrared activity is modified on a gold, silver, copper and other metal island-shaped thin films, electrons of the metal island films are excited by infrared light to form surface plasmas, and the surface plasmas are coupled with an incident light electric field, so that the infrared absorption of absorption molecules is greatly enhanced, and a surface-enhanced infrared absorption phenomenon is generated. Therefore, surface enhanced infrared absorption spectroscopy (SEIRAS) is an important analytical detection means for studying the structure and function of interface molecules.
At present, Au, Ag and Cu are adopted to prepare a substrate capable of enhancing infrared absorption through methods such as chemical deposition, and then a sample is required to be attached to the substrate, so that the method has multiple steps, and is difficult to operate when the quantity of substances to be detected is too small or the concentration is too low.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a nano-pore or submicron-pore film for enhancing surface absorption, which comprises a film substrate with the thickness of micron level, wherein nano-level or submicron-level circular nano-pores or submicron-level circular pores are distributed on the film substrate, and a metal or nonmetal conductive material is plated on the film substrate.
Further, the circular nano-pores or sub-micro-pores are uniformly or non-uniformly distributed.
Further, the film substrate is circular.
Further, the film substrate is made of a metal or non-metal solid material.
Furthermore, the aperture of the round nano-pore or the submicron pore is 20-1200 nm.
Furthermore, the thickness of the plating layer is 20-200 nm.
A method for enhancing surface absorption using the nanoporous or sub-nanoporous thin film, comprising the steps of:
(1) placing the sample on a film, or enabling a solution containing the sample to pass through the film, wherein the liquid part in the solution flows through nano holes or sub-micro holes on the film, solutes with the size larger than the pore size of the nano holes or the sub-micro holes can be enriched on the film, and the sample to be detected can be intensively attached to the film after filtration;
(2) placing the film with or attached to the sample to be detected on an objective table;
(3) and (4) measuring by using an infrared spectrometer, and collecting the enhanced infrared absorption spectrum signals.
The gold-plated film with the nano holes or the submicron holes for enhancing the surface absorption and the method for enhancing the surface absorption have simple structure and easy operation, and the effect of enhancing the absorption of the gold-plated film is superposed with the effect of enriching the object to be detected, so that the absorption spectrum is greatly enhanced.
Drawings
FIG. 1 is a schematic diagram of the structure of a nanoporous or sub-microporous membrane for enhanced surface absorption according to the present invention;
FIG. 2 is a cross-sectional view of the film;
FIG. 3 is a top view of the film;
FIG. 4 is a schematic structural diagram of another embodiment of the present invention;
FIG. 5 is a cross-sectional view of another embodiment of the present invention;
FIG. 6 is a top view of another embodiment of the present invention;
fig. 7 is a graph showing optical absorptance of gold-plated thin films with different gold-plating thicknesses.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1 to 6, the nanoporous or sub-microporous thin film with enhanced surface absorption according to the present invention includes a micron-sized thin film substrate 1, the thin film substrate 1 is circular, nanoscale circular nanopores 2 or sub-micron-sized sub-micropores 2 are distributed on the thin film substrate 1, and a metal or non-metal conductive material is plated on the thin film substrate 1. The size of the round nanometer hole or the submicron hole 2 is 20-1200 nm. The thickness of the plating layer on the film substrate 1 is 20-200 nm.
As shown in fig. 7, the effect of the nanoporous films with a thickness of 10-100nm on the spectral absorption is significantly enhanced when the plating is gold.
When the invention is used, a sample is placed on the film, or a solution containing the sample passes through the film, the liquid part in the solution can flow through the nano holes or the sub-micro holes on the film, the solute with the size larger than the pore size of the nano holes or the sub-micro holes can be enriched on the film, after filtration, the sample to be measured can be intensively attached on the film, the film with or attached with the sample to be measured is placed on the objective table, and because the object to be measured has a specific absorption spectrum in an infrared band and the film with the nano holes or the sub-micro holes enhances the surface absorption effect, an infrared spectrometer is used for measurement, and the enhanced infrared absorption spectrum signals can be collected.
Claims (7)
1. A nanoporous or sub-nanoporous film for enhanced surface absorption comprising a film substrate (1) having a thickness in the micron range, characterized in that: round nano holes or submicron holes (2) in a nano level or a submicron level are distributed on the film substrate (1), and a metal or nonmetal conductive material is plated on the film substrate (1).
2. The nanoporous or sub-microporous film for enhancing surface absorption according to claim 1, wherein: the circular nano-pores or sub-micro-pores (2) are uniformly or non-uniformly distributed.
3. The nanoporous or sub-microporous film for enhancing surface absorption according to claim 1, wherein: the film substrate (1) is circular.
4. The nanoporous or sub-microporous film for enhancing surface absorption according to claim 1, wherein: the film substrate (1) is made of a metal or non-metal solid material.
5. The nanoporous or sub-microporous film for enhancing surface absorption according to claim 1, wherein: the aperture of the round nanometer hole or the submicron hole (2) is 20-1200 nm.
6. The nanoporous or sub-microporous film for enhancing surface absorption according to claim 1, wherein: the thickness of the plating layer is 20-200 nm.
7. A method of enhancing surface absorption using the nanoporous or sub-nanoporous film according to any one of claims 1-6, wherein: the method comprises the following steps:
(1) placing the sample on a film, or enabling a solution containing the sample to pass through the film, wherein the liquid part in the solution flows through nano holes or sub-micro holes on the film, solutes with the size larger than the pore size of the nano holes or the sub-micro holes can be enriched on the film, and the sample to be detected can be intensively attached to the film after filtration;
(2) placing the film with or attached to the sample to be detected on an objective table;
(3) and (4) measuring by using an infrared spectrometer, and collecting the enhanced infrared absorption spectrum signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911005064.XA CN110658152A (en) | 2019-10-22 | 2019-10-22 | Nano-pore or sub-micro-pore film for enhancing surface absorption and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911005064.XA CN110658152A (en) | 2019-10-22 | 2019-10-22 | Nano-pore or sub-micro-pore film for enhancing surface absorption and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110658152A true CN110658152A (en) | 2020-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911005064.XA Pending CN110658152A (en) | 2019-10-22 | 2019-10-22 | Nano-pore or sub-micro-pore film for enhancing surface absorption and method |
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| Country | Link |
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| CN (1) | CN110658152A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020056816A1 (en) * | 2000-10-17 | 2002-05-16 | Stark Peter Randolph Hazard | Surface plasmon enhanced illumination system |
| US20110249259A1 (en) * | 2008-12-09 | 2011-10-13 | Katholieke Universiteit Leuven, K.U. Leuven R&D | Single Molecule Optical Spectroscopy in Solid-State Nanopores in a Transmission-Based Approach |
| US20130176563A1 (en) * | 2010-09-29 | 2013-07-11 | Satoshi Ozawa | Biopolymer Optical Analysis Device and Method |
| CN205091244U (en) * | 2015-11-05 | 2016-03-16 | 中国科学院化学研究所 | Two sample rooms infrared spectrum appearance liquid cell with basement of surface reinforcing infrared spectrum |
| US20160161414A1 (en) * | 2011-05-27 | 2016-06-09 | Drexel University | Flexible SERS Substrates With Filtering Capabilities |
-
2019
- 2019-10-22 CN CN201911005064.XA patent/CN110658152A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020056816A1 (en) * | 2000-10-17 | 2002-05-16 | Stark Peter Randolph Hazard | Surface plasmon enhanced illumination system |
| US20110249259A1 (en) * | 2008-12-09 | 2011-10-13 | Katholieke Universiteit Leuven, K.U. Leuven R&D | Single Molecule Optical Spectroscopy in Solid-State Nanopores in a Transmission-Based Approach |
| US20130176563A1 (en) * | 2010-09-29 | 2013-07-11 | Satoshi Ozawa | Biopolymer Optical Analysis Device and Method |
| US20160161414A1 (en) * | 2011-05-27 | 2016-06-09 | Drexel University | Flexible SERS Substrates With Filtering Capabilities |
| CN205091244U (en) * | 2015-11-05 | 2016-03-16 | 中国科学院化学研究所 | Two sample rooms infrared spectrum appearance liquid cell with basement of surface reinforcing infrared spectrum |
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Application publication date: 20200107 |
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