CN110511024A - A kind of MoO based on thermo-chromic effects3The application of ceramics - Google Patents
A kind of MoO based on thermo-chromic effects3The application of ceramics Download PDFInfo
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- CN110511024A CN110511024A CN201910834686.7A CN201910834686A CN110511024A CN 110511024 A CN110511024 A CN 110511024A CN 201910834686 A CN201910834686 A CN 201910834686A CN 110511024 A CN110511024 A CN 110511024A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 50
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Inorganic materials O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000004321 preservation Methods 0.000 claims abstract description 19
- 230000000694 effects Effects 0.000 claims abstract description 18
- 229910010293 ceramic material Inorganic materials 0.000 claims abstract description 17
- 210000004243 sweat Anatomy 0.000 claims abstract description 10
- 238000010792 warming Methods 0.000 claims abstract description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229960000935 dehydrated alcohol Drugs 0.000 claims abstract description 7
- 238000000227 grinding Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 5
- 229910003208 (NH4)6Mo7O24·4H2O Inorganic materials 0.000 claims description 2
- 238000002845 discoloration Methods 0.000 claims 1
- 238000003825 pressing Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000011148 porous material Substances 0.000 description 4
- 238000000605 extraction Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
- 230000003542 behavioural effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011840 criminal investigation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/495—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on vanadium, niobium, tantalum, molybdenum or tungsten oxides or solid solutions thereof with other oxides, e.g. vanadates, niobates, tantalates, molybdates or tungstates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/1365—Matching; Classification
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9646—Optical properties
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
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Abstract
The present invention relates to a kind of MoO based on thermo-chromic effects3The application of ceramic material belongs to fingerprint collecting and identification technology field.The present invention uses the MoO with thermo-chromic effects3Ceramic material realizes the acquisition and identification of fingerprint, when finger is in MoO3After ceramic surface pressing leaves invisible fingerprints of sweat, low-temperature heat keeps the temperature meeting so that MoO3The invisible fingerprints of sweat of ceramic surface is displayed in the form of blue obvious fingerprint, to realize fingerprint collecting and identification.MoO with thermo-chromic effects3Ceramic material weighs appropriate (NH first4)6H2W12O40·4H2O and dehydrated alcohol mixed grinding are warming up to 100 DEG C of heat preservations 1 hour in air atmosphere and then are cooled to room temperature with furnace temperature, be pressed into the disk that diameter is 18mm；In air atmosphere, it is cooled to room temperature after being warming up to 500 ~ 600 DEG C of heat preservations 2 hours, obtains MoO3Ceramics.Compared with previous fingerprint collecting and identification technology, fingerprint collecting and identification technology based on thermo-chromic effects have many advantages, such as that convenient, stability is good, the holding time is long and accuracy is high.
Description
Technical field
The present invention relates to a kind of MoO based on thermo-chromic effects3The application of ceramics, belongs to fingerprint collecting and identification technology
Field.
Background technique
Characteristics of human body's acquisition and identification technology include many aspects, such as recognition of face, iris identification, writing identification
It is unique using human body, fixed physiology and behavioural characteristic to verify individual identity, because it has peace with fingerprint recognition etc.
Entirely, uniquely e-commerce, communication equipment and financial security field have been widely used in it with the advantages such as convenient.Wherein, fingerprint
Identification is biological identification technology the most convenient, and fingerprint is by skin lines rough on mankind's finger, and fingerprint is early in people
Class has just been formed before birth, it is important that with human physiological's growth change, fingerprint will not change, and every
Personal fingerprint is all different, and general characteristic and local characteristic details difference are obvious, and the fingerprint of different people is in core point, triangle
Point, line number, curvature and node etc. have very big difference, this just provides the foundation for fingerprint recognition.Fingerprint recognition be by
The fingerprint of identification object carries out classification and compares to be differentiated, the first step is exactly the acquisition of fingerprint image.Currently, fingerprint is original
The acquisition of image generally has the optics typing directly pressed, obtains fingerprint image using the reflection of light；In addition there are condenser types
The methods of sensor fingerprint acquisition, temperature sensing acquisition, chip typing, ultrasonic wave typing and electromagnetic wave fingerprint collecting.And it is present
There is also some shortcomings for fingerprint collecting, for example the differences such as objective environment such as temperature, humidity can be to pore shape when fingerprint collecting
State has certain influence, and stamp material may block pore and can not clearly record, and fingerprint recognition pore is faint, residual at the scene
Situations such as lacking, deforming, but also fingerprint manifestation and the increasing of the difficulty of extraction, the especially fingerprint on unlike material difficulty carrier
The extraction difficulty of pore is larger.As fingerprint collecting and identification had played very positive work in terms of criminal investigation in recent years
With；The fast development of wearable device and internet, so that developing a kind of fingerprint knowledge that can be improved acquisition accuracy, stability
Not and acquisition technique has great realistic meaning and potential using value.
Summary of the invention
The purpose of the present invention is the deficiencies for existing acquisition and identification fingerprint stability and accuracy, provide a kind of base
In the MoO of thermo-chromic effects3The application of ceramics, using the MoO with quick thermo-chromic effects3Ceramic material realizes fingerprint
Acquisition and identification, when finger is in MoO3Ceramic surface pressing leaves invisible fingerprints of sweat, and meeting after heating and thermal insulation is so that MoO3Ceramic surface
Invisible fingerprints of sweat displayed in the form of blue obvious fingerprint, to carry out fingerprint collecting and identification.It is adopted with previous fingerprint
Collection is compared with identification technology, and the fingerprint collecting based on thermochromic behavior and identification have convenient, stability with fingerprint recognition
Well, the advantages that holding time is long and accuracy is high.The invention is realized by the following technical scheme.
A kind of MoO based on thermo-chromic effects3The application of ceramic material, using with quick thermo-chromic effects
MoO3Ceramics press with finger MoO3Ceramic material surfaces leave invisible fingerprints of sweat, 200 DEG C of -300 DEG C of heating and thermal insulations, after heating and thermal insulation
MoO3The invisible fingerprints of sweat of ceramic surface is displayed in the form of blue obvious fingerprint, utilizes MoO3The thermo-chromic effects of ceramics
Realize fingerprint collecting and identification.
MoO based on thermo-chromic effects3The preparation method and applications of ceramic material, using with quick thermochromism
The MoO of effect3The preparation method of ceramics, the specific steps are as follows:
(1) first by (NH4)6Mo7O24·4H2O and dehydrated alcohol mixed grinding are warming up to 100 DEG C of heat preservations 1 in air atmosphere
It is cooled to room temperature after hour with furnace temperature, is pressed into disk；
(2) in air atmosphere, room is cooled to the furnace after the disk that step (1) obtains being warming up to 500 ~ 600 DEG C of heat preservations 2 hours
Temperature obtains MoO3Potsherd.
Based on thermo-chromic effects MoO3The diameter of ceramic material is the disk of 18mm
The beneficial effects of the present invention are:
(1) when finger is in MoO3Ceramic surface pressing leaves invisible fingerprints of sweat, and meeting after heating and thermal insulation is so that MoO3The sweat of ceramic surface
Latent fingerprint is displayed in the form of blue obvious fingerprint.
(2) MoO synthesized by the present invention3Ceramic material has excellent photochromic property, has convenient, stability
Well, the advantages that holding time is long and accuracy is high.
(3) preparation process of the present invention is simple, at low cost, is expected to realize industrialization production.
Detailed description of the invention
Fig. 1 is the resulting MoO of present example 1,23Ceramic picture.
Fig. 2 is the resulting MoO of present example 1,23The finger that ceramic surface is presented after fingerprint pressing and light irradiation
Line identifies image.
Fig. 3 is resulting picture after the resulting obvious fingerprint of present example 1,2 is placed 6 months in air.
Specific embodiment
With reference to the accompanying drawings and detailed description, the invention will be further described.
Embodiment 1
MoO based on thermo-chromic effects3The application of ceramics, the MoO of use3Potsherd is by fingerprint pressing and 200 DEG C of heat preservations
MoO afterwards3Ceramics, due to MoO3Thermo-chromic effects show apparent fingerprint.MoO3Potsherd is pressed by fingerprint in sky
Resulting picture is as shown in Figure 2 after placing in gas 6 months.Therefore the MoO based on thermo-chromic effects3The application of ceramics, benefit
Use MoO3The thermo-chromic effects of ceramics realize fingerprint collecting and identification.
MoO based on thermo-chromic effects3The application of ceramic material, using the MoO of thermo-chromic effects3The preparation of ceramics
Specific step is as follows for method:
(1) 1.5g (NH is weighed first4)6Mo7O24·4H25ml dehydrated alcohol is added in O, and grinding obtains mixed material, later in sky
It is warming up to 100 DEG C of heat preservations under gas atmosphere 1 hour and then is cooled to room temperature with furnace temperature, being pressed into diameter with tablet press machine is 18mm's
Disk；
(2) in air atmosphere, 500 DEG C heat preservation 2 hours after cool to room temperature with the furnace, obtain MoO3Potsherd
The MoO that the present embodiment is prepared3Potsherd is as shown in Figure 1, as can be seen from Figure 1 color is grey.
Embodiment 2
MoO based on thermo-chromic effects3The application of ceramics, the MoO of use3Potsherd is by fingerprint pressing and 300 DEG C of heat preservations
MoO afterwards3Ceramics, due to MoO3Thermo-chromic effects show apparent fingerprint.MoO3Potsherd is pressed by fingerprint in sky
Resulting picture is as shown in Figure 2 after placing in gas 6 months.Therefore the MoO based on thermo-chromic effects3The application of ceramics, is adopted
With the MoO of thermo-chromic effects3Ceramics utilize MoO3The thermo-chromic effects of ceramics realize fingerprint collecting and identification.
MoO based on thermo-chromic effects3The application of ceramic material, using the MoO of thermo-chromic effects3The preparation of ceramics
Specific step is as follows for method:
(1) 1.5g (NH is weighed first4)6Mo7O24·4H25ml dehydrated alcohol is added in O, and grinding obtains mixed material, later in sky
It is warming up to 100 DEG C of heat preservations under gas atmosphere 1 hour and then is cooled to room temperature with furnace temperature, being pressed into diameter with tablet press machine is 18mm's
Disk；
(2) in air atmosphere, 500 DEG C heat preservation 2 hours after cool to room temperature with the furnace, obtain MoO3Potsherd
The MoO that the present embodiment is prepared3Potsherd is as shown in Figure 1, as can be seen from Figure 1 color is grey.
Embodiment 3
MoO based on thermo-chromic effects3The application of ceramics, the MoO of use3Potsherd is by fingerprint pressing and 200 DEG C of heat preservations
MoO afterwards3Ceramics, due to MoO3Thermo-chromic effects show apparent fingerprint.MoO3Potsherd is pressed by fingerprint in sky
Resulting picture is as shown in Figure 2 after placing in gas 6 months.Therefore the MoO based on thermo-chromic effects3The application of ceramics, is adopted
With the MoO of thermo-chromic effects3Ceramics utilize MoO3The thermo-chromic effects of ceramics realize fingerprint collecting and identification.
MoO based on thermo-chromic effects3The application of ceramic material, the MoO of the thermo-chromic effects of use3Ceramic system is standby
Specific step is as follows for method:
(1) 1.5g (NH is weighed first4)6Mo7O24·4H25ml dehydrated alcohol is added in O, and grinding obtains mixed material, later in sky
It is warming up to 100 DEG C of heat preservations under gas atmosphere 1 hour and then is cooled to room temperature with furnace temperature, being pressed into diameter with tablet press machine is 18mm's
Disk；
(2) in air atmosphere, 600 DEG C heat preservation 2 hours after cool to room temperature with the furnace, obtain MoO3Potsherd
The MoO that the present embodiment is prepared3Potsherd is as shown in Figure 1, as can be seen from Figure 1 color is light yellow.
Embodiment 4
MoO based on thermo-chromic effects3The application of ceramics, the MoO of use3Potsherd is by fingerprint pressing and 300 DEG C of heat preservations
MoO afterwards3Ceramics, due to MoO3Thermo-chromic effects show apparent fingerprint.MoO3Potsherd is pressed by fingerprint in sky
Resulting picture is as shown in Figure 2 after placing in gas 6 months.Therefore the MoO based on thermo-chromic effects3The application of ceramics, is adopted
With the MoO of thermo-chromic effects3Ceramics utilize MoO3The thermo-chromic effects of ceramics realize fingerprint collecting and identification.
MoO based on thermo-chromic effects3The application of ceramic material, the MoO of the thermo-chromic effects of use3Ceramic system is standby
Specific step is as follows for method:
(1) 1.5g (NH is weighed first4)6Mo7O24·4H25ml dehydrated alcohol is added in O, and grinding obtains mixed material, later in sky
It is warming up to 100 DEG C of heat preservations under gas atmosphere 1 hour and then is cooled to room temperature with furnace temperature, being pressed into diameter with tablet press machine is 18mm's
Disk；
(2) in air atmosphere, 600 DEG C heat preservation 2 hours after cool to room temperature with the furnace, obtain MoO3Potsherd
The MoO that the present embodiment is prepared3Potsherd is as shown in Figure 1, as can be seen from Figure 1 color is light yellow.
The resulting MoO of present example 1-43Ceramics, as shown in Figure 1, as can be seen from Figure 1 sintering temperature is 500 DEG C
The MoO prepared3Ceramic color is grey, 600 DEG C of MoO prepared3Ceramic color is light yellow.
Fig. 2 of the present invention is the resulting MoO after fingerprint pressing and 200 DEG C, 300 DEG C are kept the temperature of example 1-43Ceramics,
Due to MoO3Thermo-chromic effects show apparent fingerprint.
Fig. 3 of the present invention is resulting picture after the resulting obvious fingerprint of example 1-4 is placed 6 months in air.
The resulting MoO of present example 1-43Ceramics, the ceramics obtained when wherein sintering temperature is 500 DEG C and 600 DEG C are
For the potsherd with thermo-chromic effects, and the fingerprint shown according to thermochromic behavior had into convenient, stability
The advantage good, the holding time is long and accuracy is high.Illustrate the MoO with thermochromism3Identification and acquisition neck in fingerprint
Domain is with a wide range of applications.
In conjunction with attached drawing, the embodiment of the present invention is explained in detail above, but the present invention is not limited to above-mentioned
Embodiment within the knowledge of a person skilled in the art can also be before not departing from present inventive concept
It puts and makes a variety of changes.
Claims (3)
1. a kind of MoO based on thermo-chromic effects3The application of ceramic material, it is characterised in that using with quick thermochromism
The MoO of effect3Ceramics press with finger MoO3Ceramic material surfaces leave invisible fingerprints of sweat, 200 DEG C of -300 DEG C of heating and thermal insulations, heating
MoO after heat preservation3The invisible fingerprints of sweat of ceramic surface is displayed in the form of blue obvious fingerprint, utilizes MoO3The thermotropic change of ceramics
Chromatic effect realizes fingerprint collecting and identification.
2. the MoO according to claim 1 based on thermo-chromic effects3The application of ceramic material, it is characterised in that this is thermotropic
The MoO of discoloration effect3The preparation method of ceramics, the specific steps are as follows:
(1) first by (NH4)6Mo7O24·4H2O and dehydrated alcohol mixed grinding are warming up to 100 DEG C of heat preservations 1 in air atmosphere
It is cooled to room temperature after hour with furnace temperature, is pressed into disk；
(2) in air atmosphere, room is cooled to the furnace after the disk that step (1) obtains being warming up to 500 ~ 600 DEG C of heat preservations 2 hours
Temperature obtains MoO3 potsherd.
3. the application of the MoO3 ceramic material according to claim 2 based on thermo-chromic effects, it is characterised in that: described
Disc diameter is 18mm in step (1).
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| CN201910834686.7A CN110511024B (en) | 2019-09-05 | 2019-09-05 | MoO based on thermochromism effect3Application of ceramics |
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| CN201910834686.7A CN110511024B (en) | 2019-09-05 | 2019-09-05 | MoO based on thermochromism effect3Application of ceramics |
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| CN110511024A true CN110511024A (en) | 2019-11-29 |
| CN110511024B CN110511024B (en) | 2021-09-21 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63125389A (en) * | 1986-11-14 | 1988-05-28 | Fuji Photo Film Co Ltd | Thermal recording material |
| CN1671816A (en) * | 2001-05-15 | 2005-09-21 | 欧罗克拉公司 | Thermochromic material |
| MX2010014418A (en) * | 2010-12-21 | 2012-06-21 | Ct Investig Y Estudios Del Ipn | Process for the manufacture of slim films of moo3 doped with znse having photochromic and thermochromic properties. |
| CN103919558A (en) * | 2014-04-13 | 2014-07-16 | 中南民族大学 | Method of adopting fluorescence quenching system to potential fingerprint display |
| CN105160307A (en) * | 2015-08-13 | 2015-12-16 | 江南大学 | Rolling fingerprint acquisition method based on thermochromic principle |
| CN205538681U (en) * | 2016-01-28 | 2016-08-31 | 公安部物证鉴定中心 | Latent impression of hand thermic fluorescent inspection equipment of sweat on paper |
| CN110079315A (en) * | 2019-04-08 | 2019-08-02 | 昆明理工大学 | A kind of thermochromism MoO3: Yb, Er up-conversion phosphor, preparation method and its reversible regulation method of up-conversion luminescence |
-
2019
- 2019-09-05 CN CN201910834686.7A patent/CN110511024B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63125389A (en) * | 1986-11-14 | 1988-05-28 | Fuji Photo Film Co Ltd | Thermal recording material |
| CN1671816A (en) * | 2001-05-15 | 2005-09-21 | 欧罗克拉公司 | Thermochromic material |
| MX2010014418A (en) * | 2010-12-21 | 2012-06-21 | Ct Investig Y Estudios Del Ipn | Process for the manufacture of slim films of moo3 doped with znse having photochromic and thermochromic properties. |
| CN103919558A (en) * | 2014-04-13 | 2014-07-16 | 中南民族大学 | Method of adopting fluorescence quenching system to potential fingerprint display |
| CN105160307A (en) * | 2015-08-13 | 2015-12-16 | 江南大学 | Rolling fingerprint acquisition method based on thermochromic principle |
| CN205538681U (en) * | 2016-01-28 | 2016-08-31 | 公安部物证鉴定中心 | Latent impression of hand thermic fluorescent inspection equipment of sweat on paper |
| CN110079315A (en) * | 2019-04-08 | 2019-08-02 | 昆明理工大学 | A kind of thermochromism MoO3: Yb, Er up-conversion phosphor, preparation method and its reversible regulation method of up-conversion luminescence |
Non-Patent Citations (9)
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