CN104792699A - Multifunctional sample stand applicable to terahertz time-domain spectrum detection system - Google Patents
Multifunctional sample stand applicable to terahertz time-domain spectrum detection system Download PDFInfo
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- CN104792699A CN104792699A CN201510158543.0A CN201510158543A CN104792699A CN 104792699 A CN104792699 A CN 104792699A CN 201510158543 A CN201510158543 A CN 201510158543A CN 104792699 A CN104792699 A CN 104792699A
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Abstract
The invention relates to a multifunctional sample stand applicable to a terahertz time-domain spectrum detection system. The multifunctional sample stand can detect a reference sample and parallel to-be-detected samples simultaneously, so that detection errors caused by environmental changes during sample change one by one are reduced, samples with different thicknesses in different forms can be detected simultaneously, and resources are saved. According to the technical scheme, the multifunctional sample stand applicable to the terahertz time-domain spectrum detection system is characterized by comprising a base mounted on a moving device as well as a front bracket and a back bracket which are fixed on the top surface of the base and are parallel, wherein a row of front clamping fingers capable of moving forwards and backwards are arranged on the front bracket, a row of back clamping fingers are arranged on the back bracket, a plurality of chucks are arranged between the front clamping fingers and the back clamping fingers in one-to-one correspondence, a sample detection window is formed between every two adjacent chucks, a sample carrier is arranged in each sample detection window, and two sides of the sample carrier are clamped on the two adjacent chucks.
Description
Technical field
The present invention relates to Terahertz Technology detection field, particularly relate to a kind of multifunctional sample holder being applicable to terahertz time-domain spectroscopic technology and detecting.
Background technology
THz wave (Terahertz, THz) refers to the electromagnetic radiation (1THz=10 of frequency within the scope of 0.1-10THz
12hz), between microwave and infrared between, have electronics and photonics characteristic concurrently.For a long time, owing to lacking the effective method producing and detect terahertz emission, THz wave is become in electromagnetic wave spectrum, and last, not by the frequency window studied comprehensively, is called as in " Terahertz space ".Along with developing rapidly of ultrafast laser technique, the generation for terahertz pulse provides stable, reliable excitation source, makes Terahertz Science and Technology be able to develop rapidly.
Terahertz time-domain spectroscopic technology is the most representative in recent years is also the Terahertz Technology of most study, be a kind of emerging, very effective coherent detection technology, there is the advantages such as perspectivity, security, broadband property, transient state, high resolving power, high s/n ratio.The molecular weak interaction of many biomolecule, as hydrogen bond, Van der Waals force, in the rotation of dipole and crystal, the low-frequency vibration such as lattice vibration absorbs and usually all appears at THz wave segment limit, terahertz time-domain spectroscopy system is by record reference with through sample or from the terahertz time-domain electric field waveform after sample reflection, the spectrum information of sample is obtained by Fourier transform, the extinction coefficient of sample can be obtained by treatment and analysis frequency-region signal, absorption coefficient, the correlation parameters such as refractive index, thus realize Object Classification and further some important physics and chemistry information obtaining material.
Material, before carrying out terahertz time-domain spectroscopic technology detection, need carry out sample preparation usually, is positioned over by the sample prepared after on specimen holder and can carries out next step detection.For solid sample, conventional preparation method is pressed disc method, mix with certain proportion with the polyethylene powders almost transparent at terahertz wave band by a certain amount of solid sample, pulverize and compressing tablet, the thickness of compressing tablet is determined by pressure size when mixture quality, degree of grinding and compressing tablet; For fluid sample, the good quartz colorimetric utensil of usual employing terahertz wave band permeability loads or drips on quartz slide, the light path of cuvette and the thickness of slide are determined by requirement of experiment, therefore, no matter are that solid sample or fluid sample all have higher requirement to specimen holder.The mode often adopted for the sample of different shape, different size at present changes specimen holder one by one, consuming time and waste resource, and conventional specimen holder once can only place a sample, the detection of multiple sample (comprising reference sample) need change sample one by one.In addition, the environmental factor of terahertz time-domain spectroscopy systems axiol-ogy indoor is one of main sources of noise, and replacing specimen holder and sample can cause the change of sensing chamber's environment one by one, bring the error of detection.
Summary of the invention
The object of the invention is to overcome the deficiency in above-mentioned background technology, there is provided a kind of structure simple, easy to operate sample shelf apparatus, this device can carry out reference sample and detect with while parallel testing sample, decrease the metrical error that when changing sample one by one, environmental change brings, the detection of sample of different-thickness, different shape can be carried out simultaneously, save resource.
For realizing above object, present invention employs following technical scheme:
Be applicable to the multifunctional sample holder of terahertz time-domain spectroscopy detection system, it is characterized in that: comprise installation base on the mobile device, be fixed on base top surface and the fore-stock be parallel to each other and after-poppet; Described fore-stock is provided with a row can fore-aft travel front clamp finger, after-poppet is provided with holding finger after a row, front clamp is pointed one_to_one corresponding between rear holding finger thus is formed several chucks, form a sample detection window between adjacent two chucks, sample carrier to be placed in sample detection window and sandwich on adjacent two chucks.
As preferably, described front clamp finger comprises the sample clamping groove be vertically fixed on fore-stock, be arranged on front sample intermediate plate on rear side of sample clamping groove and the thickness adjusting screw(rod) of sample intermediate plate front and back position before regulating; The notch of described sample clamping groove is arranged backwards, and front sample intermediate plate is vertically arranged in notch, and the front side of sample clamping groove offers screw, and adjusting screw(rod) is resisted against on front sample intermediate plate through after screw.
As preferably, the cell wall of described notch both sides offers separately at least one chute along backward opening, the both sides of described front sample intermediate plate are shaped with corresponding projection respectively and coordinate with chute.
As preferably, described rear holding finger comprises the sample clamping plate be fixed on after-poppet and the rear sample intermediate plate be vertically fixed on front side of sample clamping plate.
As preferably, the spacing of described chuck is equal, thus forms the identical detection window of size.
As preferably, described mobile device is cross slid platform.
As preferably, described sample carrier is solid preform or cuvette or slide.
The invention has the beneficial effects as follows: structure of the present invention is simple, easy to operate, several chucks are formed by the forward and backward holding finger of front and back correspondence, clamping to sample carrier can have been pointed by regulating front clamp, sample detection window is formed between chuck and chuck, multiple sample can be carried out and comprise reference sample and detection while parallel testing sample, decrease the metrical error that when changing sample one by one, environmental change brings, the detection of sample of different-thickness, different shape can be carried out simultaneously, save resource.
Accompanying drawing explanation
Fig. 1 is perspective view of the present invention.
Fig. 2 is the perspective view of fore-stock.
Fig. 3 is the perspective view of front sample intermediate plate.
Fig. 4 is the perspective view of the after-poppet being fixed with rear sample intermediate plate.
Fig. 5 is the perspective view of the present invention when having clamped four solid preform.
Fig. 6 is the perspective view of the present invention when having clamped four cuvettes.
Fig. 7 is the perspective view of the present invention when having clamped a slide.
In figure: 1, fore-stock; 2, after-poppet; 3, front sample intermediate plate; 4, rear sample intermediate plate; 5, thickness adjusting screw(rod); 6, base; 7, mobile device; 8, sample detection window; 9, sample clamping groove; 10, chute; 11, screw; 12, protruding; 13, sample clamping plate; 14a, reference solid preform; 14b, parallel solid preform; 15a, reference cuvette; 15b, parallel cuvette to be measured; 16, slide.
Embodiment
Below in conjunction with Figure of description, the invention will be further described, but the present invention is not limited to following examples.
As shown in Figure 1, the multifunctional sample holder being applicable to terahertz time-domain spectroscopic technology and detecting of the present invention, comprises fore-stock 1, is parallel to that after-poppet 2, correspondence that fore-stock 1 places are arranged on five front sample intermediate plates 3 on fore-stock 1, correspondence is arranged on after-poppet 2 after five sample intermediate plate 4, correspondence are arranged on five thickness adjusting screw(rod)s 5, base 6 and mobile device 7 on fore-stock 2.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, fore-stock 1 is provided with five equally distributed sample clamping grooves 9, and on after-poppet 2, correspondence is provided with five equally distributed sample clamping plates 13.The notch of sample clamping groove is arranged backwards, front sample intermediate plate 3 has vertically been installed in each notch, form front clamp finger, the front side vertical of each sample clamping plate 13 secures rear sample intermediate plate 4, holding finger after forming, front clamp is pointed with rear holding finger one_to_one corresponding thus is formed several chucks, forms sample detection window 8 between chuck and chuck.In Fig. 1, fore-stock 1, after-poppet 2 are parallel to be fixed on base 6, forms four sample detection windows 8, detects while may be used for reference sample testing sample parallel with three, decreases the metrical error that when changing sample one by one, environmental change brings.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, sidewall in each sample clamping groove 9 is equipped with two to parallel chute 10, projection 12 one_to_one corresponding that this chute 10 is arranged with front sample intermediate plate 3 both sides, with coordinating of chute 10, front sample intermediate plate 3 is arranged in sample clamping groove 9 by protruding 12, each rear sample intermediate plate 4 is directly fixed on each sample clamping plate 13, and front sample intermediate plate 3, rear sample intermediate plate 4 can be all polytetrafluoroethylmaterial material.
As shown in Figure 1, Figure 2, shown in Fig. 5, Fig. 6 and Fig. 7, a screw 11 is equipped with in the middle part of the sidewall of each sample clamping groove 9, this screw 11 passes through threaded engagement with thickness adjusting screw(rod) 5, the rear end of thickness adjusting screw(rod) 5 is through the front side being resisted against front sample intermediate plate 3 after screw, by rotating thickness adjusting screw(rod) 5, removable front sample intermediate plate 3, thus the distance between the front sample intermediate plate 3 of adjustment and rear sample intermediate plate 4, realize the clamping of solid preform 14a and 14b to different-thickness, cuvette 15a and 15b and slide 16 and fix.
As shown in Figure 1, Figure 2, shown in Fig. 5, Fig. 6 and Fig. 7, ultimate range between the forward and backward sample intermediate plate 3,4 on each sample detection window 8 both sides is greater than the thickness of conventional solid compressing tablet 14a and 14b, cuvette 15a and 15b and slide 16, the width of each sample detection window 8 is less than the diameter of conventional solid compressing tablet 14a and 14b and the width of cuvette 11, be greater than spot diameter, therefore each described sample detection window 8 both may be used for the detection of compressing tablet solid sample 14a and 14b, also may be used for the detection of the fluid sample of cuvette 15a and 15b or slide 16.
As shown in Figure 1, mobile device 7 is for being generally motor-driven cross slid platform (conventional equipment), the motion of horizontal and vertical both direction can be realized, this mobile device 7 is connected with base 6, for adjusting the position of sample detection window 8, make light spot focus be positioned on sample, simultaneously for switch sample detection window 8, realize the continuous detecting of multiple sample.
Introduce the course of work below in conjunction with figure, detect four solid preform for the present invention being provided with four sample detection windows for terahertz time-domain spectroscopic technology:
As shown in Figure 5, four solid preform are comprised and puts into four sample detection windows 8 successively with reference to solid preform 14a solid preform 14b to be measured parallel with three, by rotating thickness adjusting screw(rod) 5, solid preform 14a and 14b is fixed between forward and backward sample intermediate plate 3,4; Multifunctional sample holder of the present invention is put into terahertz time-domain spectroscopy instrument sensing chamber, drying nitrogen is filled with in sensing chamber, after reducing to 0 Deng sensing chamber's humidity, open the motor of mobile device 7, the position of sample detection window 8 is regulated by mobile device 7, light spot focus is positioned at reference on solid preform 14a, and carries out the spectra collection with reference to solid preform 14a; Detect complete with reference to solid preform 14a, by mobile device 7 switch sample detection window 8, realize the detection of remaining three parallel solid preform 14b to be measured successively; All samples detects complete, oppositely regulates thickness adjusting screw(rod) 5, after thickness adjusting screw(rod) 5 is screwed out certain distance, successively stir the projection 12 at front sample intermediate plate about 3 two ends outward, when reaching ultimate range etc. forward and backward sample intermediate plate 3,4, sample is taken out, detects complete.
As shown in Figure 6, the present invention detects the fluid sample in four cuvette 15a and 15b, comprises the detecting step of reference sample and three parallel sample, consistent with the detecting step that the present invention detects four solid preform 14a and 14b.
As shown in Figure 7, the present invention detects fluid sample on slide 12, when comprising reference sample point testing sample point parallel with three, by slide 12 traverse between front sample intermediate plate 3, rear sample intermediate plate 4, reference sample point on slide 12 testing sample point parallel with three lays respectively at four sample detection windows 8 of this multifunctional sample holder, and all the other steps are consistent with the detecting step that the present invention being provided with four sample detection windows 8 detects four solid preform 14a and 14b.
Obvious the present invention can arrange multiple chuck as required, to adapt to the detection of multiple sample.
Finally, it should be noted that above what enumerate is only specific embodiments of the invention.Obviously, the invention is not restricted to above embodiment, a lot of distortion can also be had.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention, all should think protection scope of the present invention.
Claims (7)
1. be applicable to the multifunctional sample holder of terahertz time-domain spectroscopy detection system, it is characterized in that: comprise the base (6) be arranged on mobile device (7), be fixed on base top surface and the fore-stock be parallel to each other (1) and after-poppet (2); Described fore-stock is provided with a row can fore-aft travel front clamp finger, after-poppet is provided with holding finger after a row, front clamp is pointed one_to_one corresponding between rear holding finger thus is formed several chucks, form a sample detection window (8) between adjacent two chucks, sample carrier to be placed in sample detection window and sandwich on adjacent two chucks.
2. the multifunctional sample holder being applicable to terahertz time-domain spectroscopy detection system according to claim 1, is characterized in that: described front clamp finger comprises the sample clamping groove (9) be vertically fixed on fore-stock, is arranged on the front sample intermediate plate (3) on rear side of sample clamping groove and regulates the thickness adjusting screw(rod) (5) of front sample intermediate plate front and back position; The notch of described sample clamping groove is arranged backwards, and front sample intermediate plate is vertically arranged in notch, and the front side of sample clamping groove offers screw (11), and adjusting screw(rod) is resisted against on front sample intermediate plate through after screw.
3. the multifunctional sample holder being applicable to terahertz time-domain spectroscopy detection system according to claim 2, it is characterized in that: the cell wall of described notch both sides offers separately at least one chute along backward opening (10), the both sides of described front sample intermediate plate are shaped with corresponding projection (12) respectively and coordinate with chute.
4. the multifunctional sample holder being applicable to terahertz time-domain spectroscopy detection system according to any one of claim 1-3, is characterized in that: described rear holding finger comprises the sample clamping plate (13) be fixed on after-poppet and the rear sample intermediate plate (4) be vertically fixed on front side of sample clamping plate.
5. the multifunctional sample holder being applicable to terahertz time-domain spectroscopy detection system according to claim 4, is characterized in that: the spacing of described chuck is equal, thus forms the identical detection window of size.
6. the multifunctional sample holder being applicable to terahertz time-domain spectroscopy detection system according to claim 5, is characterized in that: described mobile device is cross slid platform.
7. the multifunctional sample holder being applicable to terahertz time-domain spectroscopy detection system according to claim 6, is characterized in that: described sample carrier is solid preform (14a, 14b) or cuvette (15a, 15b) or slide (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510158543.0A CN104792699A (en) | 2015-04-03 | 2015-04-03 | Multifunctional sample stand applicable to terahertz time-domain spectrum detection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510158543.0A CN104792699A (en) | 2015-04-03 | 2015-04-03 | Multifunctional sample stand applicable to terahertz time-domain spectrum detection system |
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| CN104792699A true CN104792699A (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510158543.0A Pending CN104792699A (en) | 2015-04-03 | 2015-04-03 | Multifunctional sample stand applicable to terahertz time-domain spectrum detection system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106769993A (en) * | 2016-12-21 | 2017-05-31 | 北京农业信息技术研究中心 | Sample compressing tablet bogey, terahertz light spectral measurement system and measuring method |
| CN108152237A (en) * | 2018-01-18 | 2018-06-12 | 苏州中汽检测技术服务有限公司 | A kind of automobile sun film anti-ultraviolet property test system and test method |
| CN109580536A (en) * | 2018-12-17 | 2019-04-05 | 南京市江宁医院 | Sample arm based on Terahertz detection flesh tissue sample |
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| US4682890A (en) * | 1985-05-31 | 1987-07-28 | Health Research, Incorporated | Microsample holder and carrier therefor |
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| JP2006239810A (en) * | 2005-03-03 | 2006-09-14 | Jatco Ltd | Positioning device for drilling machine |
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| CN203494531U (en) * | 2013-06-07 | 2014-03-26 | 北京工业大学 | Space-intensive type multidimensional sample adjusting frame |
| CN204556486U (en) * | 2015-04-03 | 2015-08-12 | 浙江大学 | Be applicable to the multifunctional sample holder of terahertz time-domain spectroscopy detection system |
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| US4682890A (en) * | 1985-05-31 | 1987-07-28 | Health Research, Incorporated | Microsample holder and carrier therefor |
| US6118582A (en) * | 1999-07-12 | 2000-09-12 | Immuno Concepts, Inc. | Slide holder |
| US7736594B1 (en) * | 2002-01-22 | 2010-06-15 | Grace Bio-Labs, Inc. | Reaction surface array diagnostic apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769993A (en) * | 2016-12-21 | 2017-05-31 | 北京农业信息技术研究中心 | Sample compressing tablet bogey, terahertz light spectral measurement system and measuring method |
| CN108152237A (en) * | 2018-01-18 | 2018-06-12 | 苏州中汽检测技术服务有限公司 | A kind of automobile sun film anti-ultraviolet property test system and test method |
| CN109580536A (en) * | 2018-12-17 | 2019-04-05 | 南京市江宁医院 | Sample arm based on Terahertz detection flesh tissue sample |
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Application publication date: 20150722 |