CN207832676U - A kind of sensor with surface-enhanced Raman effects - Google Patents
A kind of sensor with surface-enhanced Raman effects Download PDFInfo
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- CN207832676U CN207832676U CN201721862093.4U CN201721862093U CN207832676U CN 207832676 U CN207832676 U CN 207832676U CN 201721862093 U CN201721862093 U CN 201721862093U CN 207832676 U CN207832676 U CN 207832676U
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- noble metal
- sensor
- enhanced raman
- substrate
- triangular plate
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Abstract
The utility model discloses a kind of sensor with surface-enhanced Raman effects, including the substrate made of ferroelectric material, being generated on substrate has at least one noble metal triangular plate, deposition has noble metal granule on noble metal triangular plate, it uses the utility model has the beneficial effects that using lithium niobate monocrystal piece as substrate, it can be used repeatedly, and service life is very long (if being used always without breakage), experimental cost is greatly saved, and total is simple, signal enhancing effect is good.
Description
Technical field
The utility model is related to field of molecular detection, and in particular to a kind of sensing with surface-enhanced Raman effects
Device.
Background technology
Raman scattering spectrum is referred to as the fingerprint of substance, can differentiate type even intermolecularization of molecule using it
The vibration information of key is learned, however the intensity of Raman diffused light is very weak, only accounts for the 10 of total scattering luminous intensity-6-10-10, it is very difficult to it obtains and divides
The Raman signal of son.Research is found：Surface Enhanced Raman Scattering Spectrum (SERS) i.e. by Molecular Adsorption your noble metal granule such as
Silver, gold or copper particle surface, or are adsorbed on the rough surface of these sheet metals, and the intensity of sample its Raman spectrum adsorbed can
Improve 103-106Times.It is generally believed that vibrating more violent, rough surface in coarse surface substrate top surface plasma
It can be coupled out very strong electromagnetic field, this is very prominent for the contribution of Raman scattering enhancing.Usually prepare Raman scattering enhancing lining
Bottom method has magnetron sputtering method, chemical etching method, photoetching process etc., although these technologies have developed relative maturity, there are techniques
The shortcomings of condition is harsh, complicated for operation, cost is excessively high, the severe constraints application of Surface enhanced Raman scattering (SERS) substrate.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of sensor with surface-enhanced Raman effects.
Technical solution is as follows：A kind of sensor with surface-enhanced Raman effects, key are：Including by ferroelectricity material
Expect manufactured substrate, being generated on the substrate has at least one noble metal triangular plate, your gold is deposition have on the noble metal triangular plate
Metal particles.Stronger electromagnetic field can be coupled out under laser using above-mentioned technical proposal noble metal triangular plate and noble metal granule,
The electromagnetic field of this enhancing can be with the electronics inelastic scattering signal in amplification molecule, so as to collect Raman signal, this
Utility model is simple in structure, and Raman signal enhancing effect is good.
As preferred：
Above-mentioned noble metal triangular plate is Golden Triangle piece.
Above-mentioned noble metal granule is gold nano grain.
Above-mentioned substrate is lithium niobate monocrystal piece, and being generated on the positive plane of polarization of the lithium niobate monocrystal piece has the noble metal three
Cornual plate.
There are at least two noble metal triangular plates on above-mentioned substrate, being deposited at least one noble metal triangular plate has
The noble metal granule.
Above-mentioned noble metal triangular plate is equilateral triangle, and its side length is 400nm-4 μm.
The thickness of above-mentioned substrate is 0.3mm.
The grain size of above-mentioned gold nano grain is 30-200nm.
Advantageous effect：It uses the utility model has the beneficial effects that using lithium niobate monocrystal piece as substrate, can make repeatedly
With service life is very long (if being used always without breakage), and experimental cost, and entire sensor structure letter is greatly saved
List, signal enhancing effect are good.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the A-A ' sectional views of Fig. 1；
Fig. 3 is the Raman diffused light spectrogram of the utility model.
Specific implementation mode
With reference to embodiment and attached drawing, the utility model is described in further detail.
As illustrated in fig. 1 and 2, a kind of sensor with surface-enhanced Raman effects, including served as a contrast made of ferroelectric material
Bottom 1, generating on the substrate 1 has at least one noble metal triangular plate 2, and deposition has noble metal granule on the noble metal triangular plate 2
3。
The substrate 1 is lithium niobate monocrystal piece, thickness 0.3mm, on the positive plane of polarization of the lithium niobate monocrystal piece
Generation has the noble metal triangular plate 2, the surface smoothness of the lithium niobate monocrystal piece to reach optics rank.
The noble metal triangular plate 2 is Golden Triangle piece, has at least two noble metal triangular plates 2 on the substrate 1, until
It is gold nano grain, institute that deposition, which has the noble metal granule 3, the noble metal granule 3, on a few noble metal triangular plate 2
It is equilateral triangle to state noble metal triangular plate 2, and its side length is 400nm-4 μm, the grain size of the gold nano grain is 30-200nm.
By prepare based on Golden Triangle piece, gold nano grain sensor for, it is above with surface-enhanced Raman effects
Sensor can be prepared in the following way：
Congruent melting component ratio lithium niobate monocrystal, edge is taken to cut to obtain lithium niobate monocrystal thin slice perpendicular to crystallographic axis c-axis direction,
It is 0.3mm that the thin slice, which is polished to thickness, and surface smoothness reaches optics rank, using the lithium niobate monocrystal thin slice after polishing as
The substrate 1, upward by the positive plane of polarization (faces+Z) of the substrate 1, and the chlorine of dropwise addition 10mmol/l is golden on the forward direction plane of polarization
Then acid solution carries out photochemical precipitation reaction, after reaction with the ultraviolet light vertical irradiation chlorauric acid solution of 280-400nm
It first uses alcohol rinse substrate surface twice, rinses one minute, then rinse twice with clean water every time, rinse one minute every time,
It is finally dried up with nitrogen, obtains multiple Golden Triangle pieces on the substrate 1, Golden Triangle on piece, which also deposits, the Jenner
Rice grain.
4NBT is adsorbed on the sensor provided by the utility model with surface-enhanced Raman effects, using 633nm
Laser acquire Raman spectrum, the study found that having the place of Au nano particles that can collect this in Golden Triangle on piece deposition
The Raman signal (as shown in B location in Fig. 3) of molecule, this is because Au nano particles and Au nanometers of triangular plates both can be
Be coupled out stronger electromagnetic field under laser, this stronger electromagnetic field can with the electronics inelastic scattering signal in amplification molecule,
So as to collect Raman；In addition the Raman signal of enhancing can be also collected between two neighboring noble metal triangular plate, and
Raman signal is not acquired but in simple Golden Triangle on piece (in such as Fig. 3 shown in location A).
Finally, it should be noted that foregoing description is only the preferred embodiment of the utility model, the common skill of this field
Art personnel are under the enlightenment of the utility model, under the premise of without prejudice to the utility model aims and claim, can make
Expression, such transformation are each fallen within the scope of protection of the utility model as multiple types.
Claims (8)
1. a kind of sensor with surface-enhanced Raman effects, it is characterised in that：Including the substrate made of ferroelectric material
(1), being generated on the substrate (1) has at least one noble metal triangular plate (2), your gold is deposition have on the noble metal triangular plate (2)
Metal particles (3).
2. a kind of sensor with surface-enhanced Raman effects according to claim 1, it is characterised in that：Your gold
It is Golden Triangle piece to belong to triangular plate (2).
3. a kind of sensor with surface-enhanced Raman effects according to claim 1 or 2, it is characterised in that：It is described
Noble metal granule (3) is gold nano grain.
4. a kind of sensor with surface-enhanced Raman effects according to claim 3, it is characterised in that：The substrate
(1) it is lithium niobate monocrystal piece, being generated on the positive plane of polarization of the lithium niobate monocrystal piece has the noble metal triangular plate (2).
5. a kind of sensor with surface-enhanced Raman effects according to claim 1 or 2, it is characterised in that：It is described
There are at least two noble metal triangular plates (2) on substrate (1), is deposited at least one noble metal triangular plate (2)
State noble metal granule (3).
6. a kind of sensor with surface-enhanced Raman effects according to claim 5, it is characterised in that：Your gold
It is equilateral triangle to belong to triangular plate (2), and its side length is 400nm-4 μm.
7. a kind of sensor with surface-enhanced Raman effects according to claim 1, it is characterised in that：The substrate
(1) thickness is 0.3mm.
8. a kind of sensor with surface-enhanced Raman effects according to claim 3, it is characterised in that：The Jenner
The grain size of rice grain is 30-200nm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711207677 | 2017-11-27 | ||
| CN2017112076772 | 2017-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207832676U true CN207832676U (en) | 2018-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721862093.4U Expired - Fee Related CN207832676U (en) | 2017-11-27 | 2017-12-27 | A kind of sensor with surface-enhanced Raman effects |
| CN201810723772.6A Active CN109837531B (en) | 2017-11-27 | 2018-07-04 | Preparation method of gold nano triangular plate with surface enhanced Raman effect |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810723772.6A Active CN109837531B (en) | 2017-11-27 | 2018-07-04 | Preparation method of gold nano triangular plate with surface enhanced Raman effect |
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| CN (2) | CN207832676U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111573812B (en) * | 2020-05-13 | 2022-04-22 | 重庆科技学院 | Method for directly reducing hexavalent chromium by gold nanosheet/lithium niobate composite material through photoinduction |
| CN111847571B (en) * | 2020-07-14 | 2022-04-22 | 重庆科技学院 | Method for photoinduced degradation of anionic dye by nano-gold-lithium niobate composite material |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1715326A1 (en) * | 2005-04-22 | 2006-10-25 | Universität Heidelberg | Sensor chip with connected non-metallic particles comprising a metallic coating |
| US7772013B2 (en) * | 2006-08-21 | 2010-08-10 | Virginia Tech Intellectual Properties, Inc. | Enhancement of second-order non-linear optical susceptibilities in organic film materials using non-centrosymmetric nanoparticles |
| JP4779118B2 (en) * | 2006-09-04 | 2011-09-28 | 国立大学法人九州大学 | Method for producing noble metal nanosheet |
| JP6146898B2 (en) * | 2012-06-29 | 2017-06-14 | 国立研究開発法人物質・材料研究機構 | Surface enhanced Raman spectroscopic (SERS) substrate, manufacturing method thereof, biosensor using the same, and microchannel device using the same |
| CN102921961B (en) * | 2012-11-30 | 2016-01-20 | 南京大学 | A kind of femtosecond laser prepares the method for metal nano material |
| CN104308179A (en) * | 2014-10-16 | 2015-01-28 | 苏州大学 | Method for quickly preparing high-yield gold triangular nanoprisms |
| US20160214902A1 (en) * | 2015-01-28 | 2016-07-28 | Sandia Corporation | Piezoelectric-effect-induced heterogeneous electrochemical reactions |
| CN104677957B (en) * | 2015-02-11 | 2017-07-18 | 安徽理工大学 | A kind of golden titanium niobic acid layered nanocomposites enzyme sensor and its preparation, application |
| CN105789432B (en) * | 2016-04-17 | 2018-10-23 | 重庆科技学院 | A kind of micro-nano magnetoelectric coupling device based on ferroelectric thin film and self assembly magnetic nanoparticle structure |
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- 2017-12-27 CN CN201721862093.4U patent/CN207832676U/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN109837531B (en) | 2023-05-23 |
| CN109837531A (en) | 2019-06-04 |
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