CN105044046A - Terahertz wave organic matter detection device and method based on disk periodic structure - Google Patents
Terahertz wave organic matter detection device and method based on disk periodic structure Download PDFInfo
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Abstract
The invention provides a Terahertz wave organic matter detection device based on a disk periodic structure. The Terahertz wave organic matter detection device is provided with a substrate and a metal layer, wherein the metal layer is used for acquiring Terahertz waves and detecting organic matter, and comprises a signal acquisition part, a first mode conversion part, a conduction detection part, a second mode conversion part and a signal output part, the signal acquisition part is used for acquiring Terahertz waves from an upper device, and transmitting the Terahertz waves to the first mode conversion part for mode conversion, the Terahertz waves become surface plasma waves which are transmitted in a metal waveguide in the conduction detection part, and can be coupled with a resonant ring in the metal waveguide to produce a resonant peak with a high Q value, and the resonant peak passes through a sample to be detected, is subjected to mode conversion by the second mode conversion part again, and finally is transmitted to a vector network analyzer by the signal output part for data analysis.
Description
Technical field
The invention belongs to THz wave detection field, be specifically related to a kind of THz wave organism pick-up unit based on disk periodic structure.
Background technology
Terahertz (THz) ripple is the electromagnetic wave between microwave and far infrared, has a wide range of applications in biomedicine, safety monitoring, nondestructive detecting, uranology, spectrum and the field such as imaging technique and information science.At visible light wave range, widely use in biology and medical research based on surface plasma excimer sensor.
Surface plasmon resonance is a kind of charge density oscillation eigenmodes being present in metal and dielectric interface.It can excite generation by incident light through prism-coupled, grating coupling or waveguide-coupled.Its principle is: incident light excites metallic film and dielectric interface to produce surface plasma excimer.
Although the surface plasmon resonance sensor of waveguide-coupled and Goubau line structure have been very proven technique at visible light wave range, but the corresponding device being operated in terahertz wave band is also seldom reported, the sensor device that the high sensitivity Terahertz organism that especially Goubau line and resonant ring are formed detects also did not relate to.
Summary of the invention
The present invention carries out for solving the problem, and by providing a kind of THz wave organism pick-up unit based on disk periodic structure, improves the sensitivity of resonant ring sensor in field of biological medicine further.
Present invention employs following technical scheme:
THz wave organism pick-up unit based on disk periodic structure provided by the invention has such technical characteristic, has: substrate; And, be arranged at the metal level on the upper surface of substrate, for obtaining THz wave and detecting organism.
Wherein, metal level comprises: signal acquisition portion, is co-planar waveguide, for obtaining THz wave from epigyny device, and is translated into accurate TEM wave mode, first mode converter section, portion is connected with signal acquisition, comprise Vivaldi antenna and the first metal waveguide, Vivaldi antenna is used for the matches impedances with signal acquisition portion, first metal waveguide is provided with the groove that a plurality of groove depth increases gradually, for excitating surface plasmon, THz wave is converted into surface wave mode by the accurate TEM wave mode of standard, conduction test section, be connected with first mode converter section, conduct for allowing surface wave and pass measuring samples thus organism is detected, comprise and be connected the second metal waveguide with the first metal waveguide, and the resonant ring to be spaced in intervals with the second metal waveguide, measuring samples is placed on described resonant ring, second metal waveguide is provided with the groove of a plurality of fixing groove depth, fixing groove depth is identical with groove depth maximum in the first metal waveguide, resonant ring is the disk being provided with periodically groove structure, be tooth between adjacent two groove structures, waveguide between tooth with groove is relative, second patten transformation portion, symmetrical along conduct the center line of test section with first mode converter section, for THz wave to be as the criterion accurate TEM wave mode by surface wave mode conversion, and signal efferent, be connected with the second patten transformation portion, for THz wave is transferred to the next analytical equipment.
THz wave organism pick-up unit based on disk periodic structure provided by the invention, such feature can also be had, also comprise: vector network analyzer, be connected with signal acquisition portion and signal efferent respectively by two probes, for launching and detection terahertz wave signal.
THz wave organism pick-up unit based on disk periodic structure provided by the invention, such feature can also be had: co-planar waveguide comprises middle its central band and is arranged in its central band both sides and the counterpoise grounding be spaced in intervals with center band, two notches between middle its central band and counterpoise grounding, respectively as the Energy Transfer port of signal acquisition portion and signal receiving portion, are connected with the probe of vector network analyzer.
THz wave organism pick-up unit based on disk periodic structure provided by the invention, can also have such feature: Vivaldi antenna comprises open circuit chamber, the line of rabbet joint and exponential line, and the first metal waveguide extends along the line of rabbet joint to described second metal waveguide place.
THz wave organism pick-up unit based on disk periodic structure provided by the invention, can also have such feature: the described spacing between resonant ring and metal waveguide is 0.5 ~ 1.5 μm.
THz wave organism pick-up unit based on disk periodic structure provided by the invention, can also have such feature: the number of cycles of the groove structure of resonant ring is 20 ~ 60, and measuring samples is placed in groove.
THz wave organism pick-up unit based on disk periodic structure provided by the invention, can also have such feature: the ectonexine radius ratio of resonant ring is 0.2 ~ 1.
THz wave organism pick-up unit based on disk periodic structure provided by the invention, can also have such feature: substrate is made up of any one material in quartz, polyethylene terephthalate and polyimide.
THz wave organism pick-up unit based on disk periodic structure provided by the invention, can also have such feature: sample to be checked is made into flake, is placed on the transparent polyethylene terephthalate material of THz wave.
THz wave organism pick-up unit based on disk periodic structure provided by the invention, such feature can also be had: the organic scope for detecting contains liquid and solid organic matters, fluid organic material preferred cell liquid, the preferred cancer cell of solid organic matters.
Further, the Terahertz organism pick-up unit that present invention also offers based on disk periodic structure detects organic method, it is characterized in that, comprises the following steps:
Step one, after sample to be checked is made into flake, is positioned in the groove structure on resonant ring; Step 2, adopts co-planar waveguide to obtain THz wave from epigyny device, is translated into accurate TEM wave mode, and accurate TEM ripple is transferred to first mode conversion portion; Step 3, adopt the second metal waveguide in first mode converter section that TEM ripple is converted into surface wave, surface wave transmits in the groove array of metal waveguide; Step 4, adopts resonant ring and the second metal waveguide to be coupled, forms harmonic peak; Step 5, harmonic peak adopts the second patten transformation portion to be converted into TEM ripple after there is drift through sample to be checked; Step 6, adopts signal efferent that TEM ripple is transferred to lower level detection apparatus and carries out data analysis.
Invention effect and effect
According to the THz wave organism pick-up unit based on disk periodic structure provided by the invention, due to metal waveguide can with resonance loop coupling produce high q-factor (200 ~ 300) harmonic peak, measuring samples is detected, improve THz wave and detect organic sensitivity, providing a kind of reference for solving the organic sciences problems of detection fast.
Accompanying drawing explanation
Fig. 1 is the structural representation of the THz wave organism pick-up unit based on disk periodic structure of the present invention;
Fig. 2 is the structural representation of the THz wave organism detection chip based on disk periodic structure of the present invention;
Fig. 3 is the structural representation of the metal level of detection chip of the present invention;
Fig. 4 is the process flow diagram that the THz wave organism pick-up unit based on disk periodic structure of the present invention detects organic matter samples;
Fig. 5 is the result figure that pick-up unit of the present invention detects large molecular biosciences organism (cancer cell).
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
Fig. 1 is the structural representation of the THz wave organism pick-up unit based on disk periodic structure of the present embodiment.
As shown in Figure 1, pick-up unit 100 comprises vector network analyzer 200 and detection chip 300.Vector network analyzer 200 is connected with the Energy Transfer port of detection chip 300 with probe 202 respectively by probe 201, for launching and detection terahertz wave signal.Organic matter samples to be checked is placed in detection chip 300.
Fig. 2 is the structural representation of the THz wave organism detection chip based on disk periodic structure of the present embodiment.
As shown in Figure 2, detection chip 300 is made up of substrate 10 and metal level 20.Metal level 20 is adhered to over the substrate 10 by photoetching and plated film.
In the present embodiment, the material of metal level 20 is gold, thickness d
1for 500nm.Substrate 10 is made up of any one material in quartz, polyethylene terephthalate (PEN) and polyimide of substrate, thickness d
2it is 200 μm.
Fig. 3 is the structural representation of the metal level of the detection chip of the present embodiment.
As shown in Figure 3, metal level 20 comprise be linked in sequence signal acquisition portion 1, first mode converter section 2, conduction test section 3, second patten transformation portion 4 and signal efferent 5.Signal acquisition portion 1 for obtaining input terahertz wave signal from vector network analyzer 200, and is translated into accurate TEM wave mode; THz wave, for excitating surface plasmon, is converted into surface wave mode by accurate TEM wave mode by first mode converter section 2; Conduction test section 3 makes it pass measuring samples for conduction surfaces ripple, detects organism; Second patten transformation portion 4 is for being as the criterion THz wave TEM wave mode by surface wave mode conversion; Signal efferent 5 is connected with vector network analyzer 200 by probe 202, and THz wave is transferred to vector network analyzer 200.
Fig. 2 is the side view of Fig. 3, and as shown in FIG. 1 to 3, signal acquisition portion 1 and signal efferent 5 are co-planar waveguide, comprises middle its central band 11 and is arranged in its central band 11 both sides and is spaced in intervals g with its central band 11
1two counterpoise groundings 12.
Two notches between middle its central band 11 and counterpoise grounding 12, respectively as the Energy Transfer port of signal acquisition portion 1 and signal efferent 5, are connected with the probe 201 of vector network analyzer and probe 202.Signal acquisition portion 1 is connected with SMA connector by probe 201, and then obtains input letter by SMA connector from concentric cable; The complete terahertz wave signal of detection is transferred to vector network analyzer 200 by probe 202 by signal efferent 5, carries out interpretation of result.
In the present embodiment, the width w of Energy Transfer port is 0.94 μm, to ensure the impedance matching of port 50 Ω.
First mode converter section 2 is connected with the Energy Transfer port in signal acquisition portion 1, is drawn by the classical indicial equation of Vivaldi antenna.Comprise Vivaldi antenna 21 and the first metal waveguide 22, Vivaldi antenna 21 is for the matches impedances with signal acquisition portion 1, first metal waveguide 22 is provided with the groove that a plurality of groove depth increases gradually, for excitating surface plasmon, THz wave is converted into highly sensitive surface wave mode by the accurate TEM wave mode that sensitivity is low, ensures wide band efficient excitation.
Conduction test section 3 comprises the second metal waveguide 31 and and the resonant ring 32 of the second metal waveguide 31 interval preset space length.Metal waveguide 31 is provided with the groove 311 of a plurality of fixing groove depth h, the groove depth of groove 311 is identical with groove depth maximum in the first metal waveguide 22.Resonant ring 32 is for being provided with the disk of periodically groove structure, and the spacing g of metal waveguide 31
2be 0.5 ~ 1.5 μm, measuring samples is placed in groove structure.
In the present embodiment, resonant ring outer shroud radius r
1be 120 μm, inner ring radius r
2be 60 μm, the trench cycle of resonant ring is 20 ~ 60, and dutycycle is 50%.The groove depth h of metal waveguide further groove is 50 μm, and the bottom of bottom land distance metal level is spaced apart 0.1h.
Second patten transformation portion 4 is symmetrical along the center line conducting test section 3 with first mode converter section 2, comprise the metal waveguide 41 that depth of groove reduces gradually and the Vivaldi antenna 21 be connected with this metal waveguide, for THz wave being as the criterion TEM wave mode by surface wave mode conversion.
Fig. 4 is the process flow diagram of the pick-up unit detection organic matter samples of the present embodiment.
As shown in Figure 4, the THz wave organism pick-up unit based on disk periodic structure detects organic method, comprises the steps:
Step one, sample to be checked is made into flake, is placed on the transparent polyethylene terephthalate material of THz wave, is then placed under the microscope in the groove 311 of resonant ring 31, then device is placed on the electrostatic platform for detecting;
Step 2, co-planar waveguide 1 obtains input terahertz wave signal by probe 201 from vector network analyzer 200, and it is passed to first mode converter section 2 with the form of accurate TEM ripple;
Step 3, first mode converter section 2 excitating surface plasma excimer, is converted to highly sensitive surface wave by accurate TEM ripple low for sensitivity;
Step 4, surface wave is propagated along the groove array in conduction test section 3, the raw harmonic peak of shape under metal waveguide and resonance loop coupling effect, and harmonic peak, through sample to be checked, is changed to TEM ripple by the second patten transformation portion 4 after drifting about, and is transferred to signal efferent 5;
Step 5, TEM ripple is transferred to vector network analyzer by probe 202 by signal efferent 5, and row data analysis to the greatest extent, completes and achieve detection organic in measuring samples.
Fig. 5 is the result figure that the pick-up unit of the present embodiment detects large molecular biosciences organism (cancer cell).
As shown in Figure 5, with sample of normal cells in contrast, because cancer cell is different with Normocellular large molecular dielectric constant, harmonic peak there occurs drift, thus achieves the detection of Terahertz larger molecular organics.
The effect of embodiment and effect
According to the THz wave organism pick-up unit based on disk periodic structure that the present embodiment provides, due to metal waveguide can with resonance loop coupling produce high q-factor (200 ~ 300) harmonic peak, measuring samples is detected, improve THz wave and detect organic sensitivity, providing a kind of reference for solving the organic sciences problems of detection fast.Meanwhile, pick-up unit is easy and simple to handle in actual applications, improves terahertz wave band sensor detection efficiency.
The invention is not restricted to the scope of embodiment; to those skilled in the art; as long as various change to limit and in the spirit and scope of the present invention determined in described claim; these changes are apparent, and all innovation and creation utilizing the present invention to conceive are all at the row of protection.
Claims (10)
1., based on a THz wave organism pick-up unit for disk periodic structure, it is characterized in that having:
Substrate; And
Metal level, is arranged on the upper surface of described substrate, for obtaining described THz wave and detecting described organism,
Wherein, described metal level comprises:
Signal acquisition portion is co-planar waveguide, for obtaining described THz wave from epigyny device, and is translated into accurate TEM wave mode;
First mode converter section, is connected with described signal acquisition portion, comprises Vivaldi antenna and the first metal waveguide,
Described Vivaldi antenna is used for the matches impedances with described signal acquisition portion, described first metal waveguide is provided with the groove that a plurality of groove depth increases gradually, for excitating surface plasmon, described THz wave is converted into surface wave mode by accurate TEM wave mode;
Conduction test section, be connected with described first mode converter section, conduct for allowing described surface wave and pass described measuring samples thus described organism is detected, comprise and be connected the second metal waveguide with described first metal waveguide, and the resonant ring to be spaced in intervals with described second metal waveguide, described measuring samples is placed on described resonant ring
Described second metal waveguide is provided with the groove of a plurality of fixing groove depth, described fixing groove depth is identical with groove depth maximum in described first metal waveguide, described resonant ring is the disk being provided with periodically groove structure, be tooth between adjacent two described groove structures, the waveguide between described tooth with described groove is relative;
Second patten transformation portion, symmetrical along the center line of described conduction test section with described first mode converter section, for described THz wave is converted to described accurate TEM wave mode by described surface wave mode; And
Signal efferent, is connected with described second patten transformation portion, for described THz wave is transferred to the next analytical equipment.
2. the Terahertz organism pick-up unit based on disk periodic structure according to claim 1, is characterized in that, also comprise:
Vector network analyzer, is connected with described signal acquisition portion and described signal efferent respectively by two probes, for launching and detecting described terahertz wave signal.
3. the Terahertz organism pick-up unit based on disk periodic structure according to claim 2, is characterized in that:
Wherein, described co-planar waveguide comprises middle its central band and is arranged in described its central band both sides and the counterpoise grounding be spaced in intervals with described center band,
Two notches between described middle its central band and described counterpoise grounding, respectively as the Energy Transfer port of described signal acquisition portion and described signal efferent, are connected with the probe of described vector network analyzer.
4. the Terahertz organism pick-up unit based on disk periodic structure according to claim 1, is characterized in that:
Wherein, described Vivaldi antenna comprises open circuit chamber, the line of rabbet joint and exponential line, and described first metal waveguide extends along the described line of rabbet joint to described second metal waveguide place.
5. the Terahertz organism pick-up unit based on disk periodic structure according to claim 1, is characterized in that:
Wherein, the described spacing between described resonant ring and described metal waveguide is 0.5 ~ 1.5 μm,
The ectonexine radius ratio of described resonant ring is 0.2 ~ 1.
6. the Terahertz organism pick-up unit based on disk periodic structure according to claim 1, is characterized in that:
Wherein, the number of cycles of the groove structure of described resonant ring is 20 ~ 60,
Described measuring samples is placed in described groove.
7., according to claim 1 based on the Terahertz organism pick-up unit of disk periodic structure, it is characterized in that:
Wherein, described substrate is made up of any one material in quartz, polyethylene terephthalate and polyimide.
8., according to claim 1 based on the Terahertz organism pick-up unit of disk periodic structure, it is characterized in that:
Wherein, described sample to be checked is made into flake, is placed on the transparent polyethylene terephthalate material of described THz wave.
9., according to claim 1 based on the Terahertz organism pick-up unit of disk periodic structure, it is characterized in that:
Wherein, described organism comprises fluid organic material in chemical organic compounds and biological sample and solid organic matters.
10. the Terahertz organism pick-up unit based on disk periodic structure according to claim 1 detects organic method, it is characterized in that, comprises the following steps:
Step one, after described sample to be checked is made into flake, is positioned in the groove structure on described resonant ring;
Step 2, adopts described co-planar waveguide to obtain described THz wave from epigyny device, is translated into accurate TEM wave mode, and described accurate TEM ripple is transferred to described first mode conversion portion;
Step 3, adopt the second metal waveguide in described first mode converter section that described TEM ripple is converted into surface wave, described surface wave transmits in the groove array of described metal waveguide;
Step 4, adopts described resonant ring and described second metal waveguide to be coupled, and forms harmonic peak;
Step 5, described harmonic peak adopts described second patten transformation portion to be converted into described TEM ripple after there is drift through described sample to be checked;
Step 6, adopts described signal efferent that described TEM ripple is transferred to lower level detection apparatus and carries out data analysis.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428774A (en) * | 2015-12-21 | 2016-03-23 | 上海理工大学 | Method for increasing pseudo surface plasma transmission bandwidth |
| CN106099264A (en) * | 2016-05-26 | 2016-11-09 | 上海理工大学 | A kind of multi-channel filter chip based on bent moon periodic structure |
| CN106199269A (en) * | 2016-07-14 | 2016-12-07 | 上海理工大学 | Efficient multi-channel filter detection device and method based on bent moon periodic structure |
| CN107681258A (en) * | 2017-08-04 | 2018-02-09 | 上海交通大学 | Using the low section broad-band antenna of the miniaturization high efficiency uhf band of SPP structures |
| CN109444091A (en) * | 2018-10-11 | 2019-03-08 | 上海理工大学 | A kind of detection method of Terahertz edible oil detection chip and edible oil |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013008713A1 (en) * | 2011-07-13 | 2013-01-17 | 独立行政法人物質・材料研究機構 | Terahertz-wave optical element |
| CN103091340A (en) * | 2013-02-22 | 2013-05-08 | 云南大学 | Micro-strip surface whispering gallery mode sensor |
| CN103280622A (en) * | 2013-04-15 | 2013-09-04 | 东南大学 | Artificial surface plasmon-based annular resonator |
| CN103531876A (en) * | 2013-10-25 | 2014-01-22 | 东南大学 | Efficient transmission line of surface plasmon |
| US20140231648A1 (en) * | 2013-02-20 | 2014-08-21 | Battelle Energy Alliance, Llc | Terahertz imaging devices and systems, and related methods, for detection of materials |
| CN104577270A (en) * | 2015-01-21 | 2015-04-29 | 东南大学 | Broadband filter based on frequency selective surface plasmon |
| US9030286B2 (en) * | 2009-04-08 | 2015-05-12 | New Jersey Institute Of Technology | Metamaterials with terahertz response and methods of making same |
-
2015
- 2015-06-01 CN CN201510292965.7A patent/CN105044046B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9030286B2 (en) * | 2009-04-08 | 2015-05-12 | New Jersey Institute Of Technology | Metamaterials with terahertz response and methods of making same |
| WO2013008713A1 (en) * | 2011-07-13 | 2013-01-17 | 独立行政法人物質・材料研究機構 | Terahertz-wave optical element |
| US20140231648A1 (en) * | 2013-02-20 | 2014-08-21 | Battelle Energy Alliance, Llc | Terahertz imaging devices and systems, and related methods, for detection of materials |
| CN103091340A (en) * | 2013-02-22 | 2013-05-08 | 云南大学 | Micro-strip surface whispering gallery mode sensor |
| CN103280622A (en) * | 2013-04-15 | 2013-09-04 | 东南大学 | Artificial surface plasmon-based annular resonator |
| CN103531876A (en) * | 2013-10-25 | 2014-01-22 | 东南大学 | Efficient transmission line of surface plasmon |
| CN104577270A (en) * | 2015-01-21 | 2015-04-29 | 东南大学 | Broadband filter based on frequency selective surface plasmon |
Non-Patent Citations (3)
| Title |
|---|
| 侯迪波等: "持久性有机物硫丹的太赫兹光谱研究", 《光谱学与光谱分析》 * |
| 流畅 等: "非极性有机溶剂光学参数的太赫兹波精确测量", 《光谱学与光谱分析》 * |
| 马春前等: "有机官能团的太赫兹光谱特征研究", 《光谱学与光谱分析》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428774A (en) * | 2015-12-21 | 2016-03-23 | 上海理工大学 | Method for increasing pseudo surface plasma transmission bandwidth |
| CN106099264A (en) * | 2016-05-26 | 2016-11-09 | 上海理工大学 | A kind of multi-channel filter chip based on bent moon periodic structure |
| CN106099264B (en) * | 2016-05-26 | 2018-08-28 | 上海理工大学 | A kind of multi-channel filter chip based on bent moon periodic structure |
| CN106199269A (en) * | 2016-07-14 | 2016-12-07 | 上海理工大学 | Efficient multi-channel filter detection device and method based on bent moon periodic structure |
| CN107681258A (en) * | 2017-08-04 | 2018-02-09 | 上海交通大学 | Using the low section broad-band antenna of the miniaturization high efficiency uhf band of SPP structures |
| CN107681258B (en) * | 2017-08-04 | 2020-01-07 | 上海交通大学 | Small-sized high-efficiency UHF frequency band low-profile broadband antenna adopting SPP structure |
| CN109444091A (en) * | 2018-10-11 | 2019-03-08 | 上海理工大学 | A kind of detection method of Terahertz edible oil detection chip and edible oil |
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