CN107255532A - A kind of SMD luminance temperature of metal phasmon and infrared ray sensor - Google Patents
A kind of SMD luminance temperature of metal phasmon and infrared ray sensor Download PDFInfo
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- CN107255532A CN107255532A CN201710316593.6A CN201710316593A CN107255532A CN 107255532 A CN107255532 A CN 107255532A CN 201710316593 A CN201710316593 A CN 201710316593A CN 107255532 A CN107255532 A CN 107255532A
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/12—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance
- G01K11/16—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance of organic materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2211/00—Thermometers based on nanotechnology
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Radiation Pyrometers (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The present invention is a kind of SMD luminance temperature of metal phasmon and infrared sensor device, there is layer of metal nano particle (4) in flexible transparent substrate (6), the luminescent substance (5) of core shell structure is located at around metal nanoparticle, polymer molecule layer (3) is located above metal nanoparticle, its bottom connects substrate or metal nanoparticle, by metal nanoparticle, polymer molecule, the cellular construction of luminescent substance composition repeats multilayer, flexible transparent film (1) is located at around said structure, transparency liquid (2) is filled between polymer molecule and flexible transparent film, paster (7) is located at below bottom flexible transparent membrane and is close to film.By the gel paster of the sensor base by this sensor docile in testee surface, and with uviol lamp direct irradiation paster upper surface.The glow color of SMD temperature sensor can be directly observed or shot with camera with human eye, it is adaptable to rule, the object of irregular surface.
Description
Technical field
It is SMD in particular to a kind of metal phasmon the invention belongs to temperature and infrared ray sensor field
Luminance temperature and infrared ray sensor, more particularly to flexible, luminous SMD temperature and infrared ray sensor.
Background technology
Current temperature sensor, mainly there is traditional temperature sensor, including thermistor and thermocouple.Thermistor
Using the resistance-temperature characterisitic of itself, temperature change, resistance value also changes, but it has had a strong impact on it from thermal phenomenon
Temperature measurement accuracy.Thermocouple utilizes pyroelectric effect, and the temperature difference at galvanic couple two ends is converted into Electromotive Difference Of Potential, but its sensitivity compared with
Under low, less stable, high temperature the temperature characterisitic of its own it is non-linear clearly, limit its temperature measurement accuracy.The above two
Traditional temperature sensor is planted, material is hard, profile is regular, can not realize the temperature survey to irregularly shaped object surface, also
Electromagnetic interference can be produced, therefore the application of this kind of sensor is very limited.In addition, red needed for current infrared temperature sensor
External detector, it is basic to use low-gap semiconductor material mercury cadmium telluride (HgCdTe) material, each imaging sensor Charge-
Coupled Device, CCD prices are millions of, sufficiently expensive.
Local plasmon resonance Localized Surface Plasmon Resonance, LSPR are metal nano knots
The resonance enhancement that structure triggers in the range of sub-wavelength with the strong interaction of light intensity, can be by light local in depth sub-wavelength
In the range of, various effects can be brought thereupon.1. producing hot spot-effect, local surface of metal nanoparticle etc. is from resonance effect
The distribution of light intensity of particle surface should be able to be caused to significantly increase.2. when the local plasmon resonance peak and quantum dot of metallic particles
Deng embedded photoluminescent material luminous peak match when, the photoluminescence efficiency of the materials such as quantum dot can be strengthened.3. metal nano
Change of the absworption peak of the local plasmon resonance of grain to its surrounding medium refractive index is very sensitive, and the pattern of nano particle
Longer, corner angle are sharper, the bigger gold nano branch 703nm/RIU of response sensitivity changed to medium refraction index.This effect is non-
Highly sensitive sensor is often suitable as, for example：After metal nano material is added in temperature sensor, due to metal nano
The Old plant that the photoluminescence enhancement effect of material changes with refractive index, will be more easily by luminescent spectrum and color
Change reflect the change of temperature.
Higher requirement is proposed to temperature sensor in current real industrial production occasion：1. in measurement ordinary temp
Meter or can not be difficult to part, the outer surface such as outer surface of the object with irregular contour and the environment of threat to life measured
During middle object temperature, it is desirable to which sensor can fit its shape, accurately measure body surface temperature；2. in measurement larger object
During temperature, it is desirable to which the contact area of sensor and testee is as big as possible, and more than spot measurement；3. it is related to electricity in measurement
During instrument temperature in terms of magnetic, such as Medical Devices, the inflammable and explosive scene of oil gas tank, frequency microwave equipment and power transformer etc.
Strong electromagnetic radiation equipment, it is desirable to which sensor does not produce electromagnetic interference, is not also afraid of electromagnetic interference.
In summary, the temperature sensor for meeting higher application requirement is realized, key is before measurement accuracy is ensured
Put, the realization to features such as sensor flexibility, large access areas.In current sensor, difficulty have and meanwhile meet high flexibility, it is big
The structure of the requirements such as contact area, zero electromagnetic interference, low cost, and the solution of this critical bottleneck problem, to realizing a new generation
Flexible sensor technology and its application are most important.
The content of the invention
Technical problem：The invention aims to overcome the weak point of prior art, it is proposed that a kind of metal etc. from
The SMD luminance temperature of excimer and infrared ray sensor, it is adaptable to multiple material and the object under test of shape, improve the standard of measurement
True property and flexibility, so as to realize the accurate measurement to irregularity temperature.
Technical scheme：A kind of SMD luminance temperature of metal phasmon and infrared ray sensor of the present invention, based on office
Field surface phasmon strengthens mechanism, and the SMD luminance temperature of metal phasmon and infrared ray sensor are by flexible and transparent
Film, transparency liquid, polymer molecule layer, metal nanoparticle, the luminescent substance of core shell structure, flexible transparent substrate, paster
Composition, its position relationship is as follows：There is layer of metal nano particle in flexible transparent substrate, the luminescent substance of core shell structure is located at gold
Around metal nano-particle, polymer molecule layer is located above metal nanoparticle, its bottom connection substrate or metal nanoparticle,
The cellular construction being made up of metal nanoparticle, polymer molecule, luminescent substance repeats multilayer, and flexible transparent film is located at upper
Structure periphery is stated, transparency liquid is filled between polymer molecule and flexible transparent film, paster is located at bottom flexible transparent membrane
Simultaneously it is close to film in lower section.
The material of the flexible transparent film be polyethylene terephtalate, polythene PE, polyvinylchloride,
PEN PEN, polydimethylsiloxane or SU-8 photoresists, its thickness range are 10 to 1000 micro-
Rice, the shape of its upper and lower surface is square, rectangle, circle, ellipsoidal structure, the areal extent of its upper and lower surface be 1 to
200 square centimeters.
The material of the transparency liquid is colourless deionized water, ethanol, isopropanol, the water white transparency non-electrolyte of ethylene glycol
Liquid, is filled between polymer molecule and in the space full of flexible transparent film formation, for compensating polymer molecule brush material
Expect the spatial volume change caused by state change.
The polymer molecule layer is flexible polymer molecular brush material layer, by high thermo-optical coeffecient and in physiological temp model
The thermally sensitive polymeric with swelling transition characteristic is formed in enclosing, and is polyacrylic acid PAA, polymethyl methacrylate for material selection
PMMA, poly-N-isopropyl acrylamide NIPAAm, polymethylacrylic acid MAA, poly- 4- benzophenonemethyls acrylate BPMA
Flexible material and its mixture；Or doping high transmission rate, the grapheme material of high heat conductance, the polymer molecule brush material layer
Thickness range is 100 to 1000 nanometers.
The material of the metal nanoparticle is gold, silver, platinum or palladium metal material；Its pattern is with arrowband synergism characteristic
Nanostructured, the metal nanoparticle has a high local plasmon resonance response sensitivity, and scope is 150 to 400 to receive
Rice/refractive index unit；The metal nanoparticle is individual layer, in monodisperse status, and particle size range is 20 to 150 nanometers,
Grain spacing scope is 100 to 300 nanometers.
The nanostructured with arrowband synergism characteristic is set square, decahedron, nanometer rods, nano-rings, nanometer star, received
Meter Shu Zhi, nanometer flag.
The material of the flexible substrate is polyethylene terephtalate, polythene PE, polyvinylchloride, poly- naphthalene
Naphthalate PEN, polydimethylsiloxane or SU-8 Other substrate materials, its thickness range are 10 to 100 millimeters.
The luminescent substance of the core shell structure is made up of core, shell, and the material of core is：Quantum dot light electroluminescent material, Luo Dan
Bright or coumarin derivative fluorescent dye, its luminous peak position is in visible ray near infrared band；The material of shell is silicon, polyethylene pyrrole
Pyrrolidone PVP, cetyl trimethylammonium bromide CTAB or sodium citrate.
The formation paster be available for repeated adhering easily to tear in testee surface, flexibility, easy sticker, it is white, opaque
Gel paster.
The SMD luminance temperature of metal phasmon of the present invention and the preparation method of infrared ray sensor are：Exist first
Self assembly layer of metal nano particle in flexible transparent substrate, the luminescent substance of redeposited core shell structure is then spin coated onto a strata
Adduct molecule layer, is repeated by metal nanoparticle, polymer molecule layer, the cellular construction that the luminescent substance of core shell structure is constituted
Multilayer, then wraps up flexible transparent film around it, then filling transparency liquid and seals, finally in bottom spin coating gel rubber material
Form paster.
The thermometric mode of sensor：The SMD luminance temperature of metal phasmon and infrared ray sensor both can be straight
Measurement object temperature is connect, infrared ray can be detected by ultrared fuel factor again.Have to temperature and ultrared sensing outcome
Two kinds of processing modes：1. human eye directly observes the glow color of SMD temperature sensor, according to sensor colors and temperature
Corresponding relation determines the temperature of testee.2. SMD temperature sensor light-emitting area is taken pictures using digital camera, by image
In incoming computer, the pixel color information in photo is extracted by computer, according to：Color --- local plasmon resonance peak
The corresponding relation of position --- medium refraction index --- temperature, determines the temperature or infrared ray of testee.
Beneficial effect：The present invention has the following advantages that compared with prior art：
1. this method uses a series of flexible materials, temperature sensor of inflexibility hard compared to traditional material,
The sensor is flexible, can docile in irregularly shaped object surface, realize the accurate measurement to object temperature.Compared to traditional
Energy single-point or the temperature sensor of small area measurement, the SMD temperature and infrared ray sensor can be with testee large area
Contact, thus the temperature of same object different parts can be measured in real time.With the infrared temperature sensor for the CCD for needing sky high cost
Compare, this method using metal nanoparticle local plasmon resonance characteristic reflection temperature change, only need human eye directly perceived or
Taken pictures and analyzed with computer by general camera, cost is low.In addition, the temperature sensor phase with traditional utilization electrical principles
Than this method is by light wave sensing temperature information, and radiation resistance is good, is particularly suitable for inflammable, explosive, space strictly limited
And used under the adverse circumstances such as strong electromagnetic.
2. this method uses polymer molecule brush material as the part of heat-sensitive sensor, with other borosilicic acid salts without
Machine material, SU-8 materials are compared, and thermo-optical coeffecient improves two orders of magnitude, thus variations in refractive index to the response of temperature change more
Plus substantially, the precision of the SMD temperature and infrared ray sensor is higher.In addition, polymer molecule layer add high transmission rate,
The grapheme material of high heat conductance, can improve the sensitivities to testee temperature while sensor light transmittance is ensured
Can, so as to improve the SMD temperature and the response speed and accuracy of infrared ray sensor.
3. temperature sensor is fixed on testee surface by this method by gel paster, gel paster easy sticker is easily torn,
It is reusable without causing damage to testee, be more applicable to it is soft, bend, the measurement of flexible biological tissue.
4. this method uses passive SMD temperature and infrared ray sensor, itself is not also produced without power attenuation
Significantly from thermal phenomenon.It is also very low as the ultraviolet light power consumption of excitation source, therefore the SMD temperature and infrared ray sensor
It is low in energy consumption, energy-conserving and environment-protective.
Brief description of the drawings
When Fig. 1 is flexible luminance temperature sensing paster schematic cross-section low temperature；
When Fig. 2 is flexible luminance temperature sensing paster schematic cross-section high temperature；
Fig. 3 is metal nanoparticle, luminescent substance, polymer molecule combination diagram；
Fig. 4 is that the flexibility formed by metal nanoparticle, polymer molecule, luminescent substance cellular construction repetition multilayer lights
During TEMP paster schematic cross-section low temperature；
Fig. 5 is that the irregular object under test of profile uses effect diagram before and after this flexible luminance temperature sensing paster.
Embodiment
A kind of SMD luminance temperature of metal phasmon and infrared ray sensor of the present invention, including：
The SMD luminance temperature of metal phasmon and infrared ray sensor are strengthened based on local surface phasmon
Mechanism, the SMD luminance temperature of metal phasmon and infrared ray sensor are gathered by flexible transparent film 1, transparency liquid 2
Adduct molecule layer 3, metal nanoparticle 4, the luminescent substance 5 of core shell structure, flexible transparent substrate 6, paster 7 is constituted, its position
Relation is as follows：There is layer of metal nano particle 4 in flexible transparent substrate 6, the luminescent substance 5 of core shell structure is located at metal nano
Around grain, polymer molecule layer 3 is located above metal nanoparticle, its bottom connection substrate or metal nanoparticle, by metal
Nano particle, polymer molecule, the cellular construction of luminescent substance composition repeat multilayer, and flexible transparent film 1 is located at above-mentioned knot
Around structure, transparency liquid 2 is filled between polymer molecule and flexible transparent film, and paster 7 is located under bottom flexible transparent membrane
Simultaneously it is close to film in side.
The SMD luminance temperature of metal phasmon of the present invention and the preparation method of infrared ray sensor are：First soft
Self assembly layer of metal nano particle 4 in property transparent substrates 6, the luminescent substance 5 of redeposited core shell structure is then spin coated onto a strata
Adduct molecule layer 3, by metal nanoparticle 4, polymer molecule layer 3, the cellular construction that the luminescent substance 5 of core shell structure is constituted can
Multilayer is repeated, flexible transparent film 1 is then wrapped up around it, then filling transparency liquid 2 and is sealed, it is finally solidifying in bottom spin coating
Glue material formation paster 7.
The thermometric mode of sensor：The SMD luminance temperature of metal phasmon and infrared ray sensor both can be straight
Measurement object temperature is connect, infrared ray can be detected by ultrared fuel factor again.Have to temperature and ultrared sensing outcome
Two kinds of processing modes：1. human eye directly observes the glow color of SMD temperature sensor, according to different colours and pair of temperature
The temperature for determining testee should be related to.2. SMD temperature sensor light-emitting area is taken pictures using digital camera, by calculating
Machine extracts pixel color information in photo, according to：Color-local plasmon resonance peak position-medium refraction index-temperature
Corresponding relation, determine the temperature or infrared ray of testee.
In the present invention, outside introduces ultraviolet light, by upper strata transparent membrane, is irradiated on luminescent substance, luminescent substance exists
Energy is absorbed under the exciting of ultraviolet light and occurs energy level transition, the electronics in excitation state is unstable to be returned to ground state and discharge light extraction
Son so that the photoluminescent process produces the fluorescence of wide spectrum.Because metal nanoparticle has arrowband synergism characteristic, fluorescence warp
Cross metal nanoparticle resonant check and form arrowband photoluminescence spectra.Because testee temperature is different, polymer is caused
The diastole of molecule brush material or contraction state are different, further result in the dielectric layer variations in refractive index around metallic particles, i.e., warm
The refractive index of degree and polymer molecule brush material has the corresponding relation of determination.Again because local surface etc. of metal nanoparticle from
Excimer absorption spectra peak position is corresponding related to its surrounding medium refractive index, therefore the local surface phasmon of metal nanoparticle
Absorption spectra peak position can produce corresponding change with the change of testee temperature.Due to purcell effects, metal nano
Grain surface plasma causes luminescent substance to increase in the local part photoresonance close with metal nanoparticle arrowband peak position
By force, fluorescence color changes, and ultimately causes the glow color change of temperature sensor.
The present invention is further illustrated below by specific embodiment and comparative example：
1. by this TEMP paster docile in object under test surface, use ultra violet lamp chip surface.
2. human eye directly observes the glow color of SMD temperature sensor, according to different colours and the corresponding relation of temperature
Determine the temperature of testee.
3. being taken pictures using digital camera to SMD temperature sensor light-emitting area, pixel face in photo is extracted by computer
Color information, according to：Color --- corresponding relation of local plasmon resonance peak position --- medium refraction index --- temperature, really
Determine the temperature or infrared ray of testee.Determine testee temperature.
In addition, those skilled in the art can also make other changes in spirit of the invention, these are according to present invention essence certainly
The change that god is made, should all be included in scope of the present invention.
Claims (10)
1. a kind of SMD luminance temperature of metal phasmon and infrared ray sensor, it is characterised in that：Described metal etc. is from sharp
The SMD luminance temperature of member and infrared ray sensor, which are based on local surface phasmon, strengthens mechanism, the metal phasmon patch
Chip luminance temperature and infrared ray sensor are by flexible transparent film (1), transparency liquid (2), polymer molecule layer (3), metal
Nano particle (4), the luminescent substance (5) of core shell structure, flexible transparent substrate (6), paster (7) composition, its position relationship is as follows：
There is layer of metal nano particle (4) in flexible transparent substrate (6), the luminescent substance (5) of core shell structure is located at metal nanoparticle
Around, polymer molecule layer (3) is located above metal nanoparticle, its bottom connection substrate or metal nanoparticle, by metal
Nano particle, polymer molecule, the cellular construction of luminescent substance composition repeat multilayer, and flexible transparent film (1) is located at above-mentioned
Structure periphery, transparency liquid (2) is filled between polymer molecule and flexible transparent film, and it is transparent that paster (7) is located at bottom flexible
Simultaneously it is close to film in film lower section.
2. a kind of SMD luminance temperature of metal phasmon and infrared ray sensor as claimed in claim 1, its feature exist
In：The material of the flexible transparent film (1) is polyethylene terephtalate, polythene PE, polyvinylchloride, poly-
(ethylene naphthalate) PEN, polydimethylsiloxane or SU-8 photoresists, its thickness range are 10 to 1000 microns,
The shape of its upper and lower surface is square, rectangle, circle, ellipsoidal structure, and the areal extent of its upper and lower surface is 1 to 200
Square centimeter.
3. a kind of SMD luminance temperature of metal phasmon and infrared ray sensor as claimed in claim 1, its feature exist
In：The material of the transparency liquid (2) is colourless deionized water, ethanol, isopropanol, the water white transparency liquid nonaqueous electrolyte of ethylene glycol
Body, is filled between polymer molecule and in the space full of flexible transparent film formation, for compensating polymer molecule brush material
Spatial volume change caused by state change.
4. a kind of SMD luminance temperature of metal phasmon and infrared ray sensor as claimed in claim 1, its feature exist
In：The polymer molecule layer (3) is flexible polymer molecular brush material layer, by high thermo-optical coeffecient and in Physiological temperatures range
The interior thermally sensitive polymeric with swelling transition characteristic is formed, and is polyacrylic acid PAA, polymethyl methacrylate for material selection
PMMA, poly-N-isopropyl acrylamide NIPAAm, polymethylacrylic acid MAA, poly- 4- benzophenonemethyls acrylate BPMA
Flexible material and its mixture；Or doping high transmission rate, the grapheme material of high heat conductance, the polymer molecule brush material layer
Thickness range is 100 to 1000 nanometers.
5. a kind of SMD luminance temperature of metal phasmon and infrared ray sensor as claimed in claim 1, its feature exist
In：The material of the metal nanoparticle (4) is gold, silver, platinum or palladium metal material；Its pattern is with arrowband synergism characteristic
Nanostructured, the metal nanoparticle (4) has high local plasmon resonance response sensitivity, and scope is received for 150 to 400
Rice/refractive index unit；The metal nanoparticle is individual layer, in monodisperse status, and particle size range is 20 to 150 nanometers,
Grain spacing scope is 100 to 300 nanometers.
6. a kind of SMD luminance temperature of metal phasmon and infrared ray sensor as claimed in claim 1, its feature exist
In：The nanostructured with arrowband synergism characteristic is set square, decahedron, nanometer rods, nano-rings, nanometer star, nanotrees
Branch, nanometer flag.
7. a kind of SMD luminance temperature of metal phasmon and infrared ray sensor as claimed in claim 1, its feature exist
In：The material of the flexible substrate (6) is polyethylene terephtalate, polythene PE, polyvinylchloride, poly- naphthalene two
Formic acid glycol ester PEN, polydimethylsiloxane or SU-8 Other substrate materials, its thickness range are 10 to 100 millimeters.
8. a kind of SMD luminance temperature of metal phasmon and infrared ray sensor as claimed in claim 1, its feature exist
In：The luminescent substance (5) of the core shell structure is made up of core (51), shell (52), and the material of core (51) is：Quantum dot light photoluminescence
Material, rhodamine or coumarin derivative fluorescent dye, its luminous peak position is in visible ray near infrared band；The material of shell (52)
For silicon, polyvinylpyrrolidone PVP, cetyl trimethylammonium bromide CTAB or sodium citrate.
9. a kind of SMD luminance temperature of metal phasmon and infrared ray sensor as claimed in claim 1, its feature exist
In：It is described formed paster (7) be available for repeated adhering easily to tear in testee surface, flexibility, easy sticker, it is white, opaque solidifying
Sticker piece.
10. the preparation side of a kind of SMD luminance temperature of metal phasmon as claimed in claim 1 and infrared ray sensor
Method, it is characterised in that self assembly layer of metal nano particle (4), redeposited core shell structure first in flexible transparent substrate (6)
Luminescent substance (5), be then spin coated onto one layer of polymeric molecular layer (3), by metal nanoparticle (4), polymer molecule layer (3),
The cellular construction of luminescent substance (5) composition of core shell structure repeats multilayer, and flexible transparent film is then wrapped up around it
(1), then filling transparency liquid (2) and seal, finally in bottom spin coating gel rubber material formation paster (7).
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