CN107229087B - A kind of nanometer rods paradigmatic structure of achievable broadband phasmon induction transparent window - Google Patents
A kind of nanometer rods paradigmatic structure of achievable broadband phasmon induction transparent window Download PDFInfo
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- CN107229087B CN107229087B CN201710310808.3A CN201710310808A CN107229087B CN 107229087 B CN107229087 B CN 107229087B CN 201710310808 A CN201710310808 A CN 201710310808A CN 107229087 B CN107229087 B CN 107229087B
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Abstract
A kind of nanometer rods paradigmatic structure of achievable broadband phasmon induction transparent window, using metal-insulator-metal type (MIM) type nanometer rods paradigmatic structure, upper layer metal is the gold nanorods dimer of edge-to-edge's arrangement；Lower metal is gold nanorods；It is silicon dioxide insulating layer between two layers of nanometer rods；To constitute the mim type nanometer rods paradigmatic structure of achievable broadband phasmon induction transparent window.The beneficial effects of the present invention are: metal-insulator-metal type type nanometer rods paradigmatic structure proposed by the invention, can realize that the phasmon in broadband induces transparent window in visible light and near infrared band, this characteristic can be applied to the fields such as photoswitch, slower rays device.
Description
Technical field
The present invention relates to phasmon induction is transparent, especially a kind of achievable broadband phasmon induction transparent window
Nanometer rods paradigmatic structure.
Background technique
Light field can excite local surface plasmon resonance phenomenon (the Localized Surface of metal Nano structure
Plasmon Resonance, LSPR), by rationally design micro-nano structure, can micro-nano size realize to optical signal behaviour
Control.The adjusting to light wave resonant frequency may be implemented in the hydridization of each phasmon oscillation mode, passes so as to be applied to biology
Numerous opto-electronic devices such as sense, waveguide, enhancing Raman scattering.Wherein, phasmon induces transparent (Plasmon-induced
Transparency, PIT) it is similar to the electromagnetic induced transparency (Electromagnetic-induced in atomic system
Transparency, EIT) phenomenon, realized by metal Nano structure.PIT be by exciting light, dark-state magnetic surface etc. from
Excimer (Magnetic surface plasmon, MSP) respectively with bright state local surface phasmon (Localized
Surface Plasmon, LSP) between coupling generate.There is quantum interference cancellation effect between the two transition paths, from
And metal Nano structure is made to show zero absorption phenomenon.This physical phenomenon can be in all various aspects such as photoswitch, slower rays devices
It plays an important role.
Currently, the metal Nano structure of many achievable phasmon induction Transparency Phenomenons has been reported.With nano-pillar, receive
Rice stick paradigmatic structure be representative, such as nanometer rods dimer (publication number: CN104061997A), nanometer rods tripolymer (publication number:
CN104634437A) etc., it can realize that phasmon induces transparent window in visible light and near infrared band.But most nano junction
The phasmon induction transparent window of structure has narrow-band characteristic.
Summary of the invention
The purpose of the present invention is a kind of achievable broadband phasmon induction transparent window there are problem, is provided for above-mentioned
Nanometer rods paradigmatic structure, can realize that the phasmon in broadband induces transparent window in visible light and near infrared band, this is special
Property can be applied to the fields such as photoswitch, slower rays device.
Technical solution of the present invention:
A kind of nanometer rods paradigmatic structure of achievable broadband phasmon induction transparent window, using metal-insulator-gold
Belong to (Metal-Insulator-Metal, MIM) type nanometer rods paradigmatic structure, upper layer metal is the gold nanorods of edge-to-edge's arrangement
Dimer；Lower metal is gold nanorods；It is silicon dioxide insulating layer between two layers of nanometer rods；To constitute achievable broadband
The mim type nanometer rods paradigmatic structure of phasmon induction transparent window.
In the gold nanorods dimer of the upper layer metal, the length of nanometer rods is 240nm, width is 60nm, thickness
For 20nm, 10nm is divided between two nanometer rods；The length of lower layer's gold nanorods is 240nm, width 130nm, with a thickness of 20nm；
The length of silicon dioxide insulating layer is 240nm, width 130nm, with a thickness of 10nm.
Working mechanism of the invention:
By the multiple electric current loops formed between nanometer rods, multiple magnetic surface phasmon dark-state modes (MSPs) are obtained, and
Each MSPs has close resonant wavelength.Exciting light, each MSPs are respectively between bright state local surface phasmon (LSP)
Coupling and interfere counteracting, to realize that the phasmon in broadband induces transparent window in visible light and near infrared band.
The beneficial effects of the present invention are:
Metal-insulator-metal type type nanometer rods paradigmatic structure proposed by the invention, can be in visible light and near infrared band
Realize that the phasmon in broadband induces transparent window.This characteristic can be applied to the fields such as photoswitch, slower rays device.
Detailed description of the invention
Fig. 1 is nanometer rods paradigmatic structure schematic diagram.
Fig. 2 is yz plane nano stick paradigmatic structure schematic diagram.
Fig. 3 is the Spectral Extinction of nanometer rods paradigmatic structure.
In figure: 1. upper layer metal, 2. lower metal, 3. silicon dioxide insulating layer.
Specific embodiment
Embodiment:
A kind of nanometer rods paradigmatic structure of achievable broadband phasmon induction transparent window, as shown in Figure 1, 2, upper layer gold
Belong to 1 for the gold nanorods dimer of edge-to-edge's arrangement, the length of nanometer rods be 240nm, width be 60nm, with a thickness of
10nm is divided between 20nm, two nanometer rods；Lower metal 2 is gold nanorods, and the length of nanometer rods is 240nm, width is
130nm, with a thickness of 20nm；It is silicon dioxide insulating layer 3, length 240nm, width 130nm, thickness between two layers of nanometer rods
For 10nm.
In actual fabrication process, its operability is considered, be substrate, nanometer rods polymerization using silica transparent medium
The periodic arrangement in plane is presented in structure in substrate.
On incident light vertical irradiation to mim type nanometer rods paradigmatic structure, direction of an electric field is distributed the short axle for being parallel to nanometer rods.
Fig. 3 is the Spectral Extinction of nanometer rods paradigmatic structure.It is shown in figure: in 700nm-830nm wave band, nanorod structure
Delustring is 5% hereinafter, i.e. transmissivity is up to 95% or more.This has obvious compared with common phasmon induces transparent window
Broadband property.
The electromagnetic field of 700nm-830nm wave band nanometer rods paradigmatic structure, distribution of charges are analyzed, find its broadband etc.
It is by exciting light and multiple magnetic surface phasmon dark-state modes with close resonant wavelength from excimer induction transparent window
(MSPs) generation is offset with the interference of the bright morphotype formula of local surface phasmon (LSP) of nanostructure jointly.
Electromagnetic field is carried out to 730nm and 780nm wavelength in transparent window respectively and distribution of charges is analyzed.In 730nm and
At 780nm, reversed distribution is presented in the upper and lower Au nanometer rods charge, but lower layer's nanometer rods are that LSP sextupole or octupole are distributed,
To occur small intensity magnetic resonance in a insulating layer.But it has been respectively formed ring current in the nanometer rods dimer of upper layer, to go out
The magnetic surface phasmon dark-state mode (MSPs) of obvious intensity, the especially adjacent in two nanometer rods, and 730nm are showed
With the MSPs opposite in phase at 780nm.The closely-spaced 10nm that wherein appearance of MSP depends on upper layer nanometer rods at 780nm is drawn
It is coupled between the stick risen.So the transparent window of nanometer rods paradigmatic structure 700nm-830nm wave band, is upper layer nanometer rods dimer
Magnetic resonance, incident light and the coefficient result of bottom LSP multi-mode in MSPs, insulating layer.
Claims (1)
1. a kind of nanometer rods paradigmatic structure of achievable broadband phasmon induction transparent window, the structure are exhausted using metal-
Edge body-metal (Metal-Insulator-Metal, MIM) type nanometer rods paradigmatic structure, upper layer metal are the gold of edge-to-edge's arrangement
Nanometer rods dimer；Lower metal is gold nanorods；It is silicon dioxide insulating layer between two layers of nanometer rods；It can be real to constitute
The mim type nanometer rods paradigmatic structure of existing broadband phasmon induction transparent window；It is characterized by: the Jenner of the upper layer metal
In rice stick dimer, the length of nanometer rods is 240nm, width is 60nm, with a thickness of 20nm, is divided between two nanometer rods
10nm；The length of lower layer's gold nanorods is 240nm, width 130nm, with a thickness of 20nm；The length of silicon dioxide insulating layer is
240nm, width 130nm, with a thickness of 10nm.
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| CN108594502B (en) * | 2018-03-30 | 2020-10-27 | 天津理工大学 | Filter of liquid crystal tuning plasmon induced transparent and Fabry cavity hybrid mode |
| CN111323856B (en) * | 2018-12-14 | 2021-03-26 | 北京理工大学 | Preparation method of visible/near-infrared light-regulated plasmon chiral conversion nanostructure |
| CN109752800B (en) * | 2019-01-29 | 2020-07-10 | 湖北工程学院 | All-optical switch based on PIT effect |
| CN109752799B (en) * | 2019-03-05 | 2020-06-19 | 合肥零度光电科技有限公司 | Circular polarization waveguide light source capable of reducing energy loss |
| CN112067673B (en) * | 2020-09-15 | 2021-09-24 | 南京大学 | Electrochemical system and method for changing response mode of plasmon sensor |
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| US7968452B2 (en) * | 2009-06-30 | 2011-06-28 | Intermolecular, Inc. | Titanium-based high-K dielectric films |
| CN104064620A (en) * | 2014-06-03 | 2014-09-24 | 苏州大学 | Surface plasmon enhanced photoelectric detector based on MIM structure |
| CN104061997B (en) * | 2014-06-26 | 2017-10-03 | 天津大学 | A kind of sensor based on gold nanorods dimerization volume array Fano resonance characteristics |
| KR102429868B1 (en) * | 2014-12-04 | 2022-08-05 | 삼성전자주식회사 | Llight interconnection device using a plasmonic via |
| CN104536161B (en) * | 2014-12-25 | 2018-07-27 | 同济大学 | A kind of fixed frequency slow wave tunable arrangement |
| CN104634437A (en) * | 2015-01-27 | 2015-05-20 | 天津理工大学 | Dual-Fano resonant feature array for symmetrical nano-rod tripolymer and sensing application thereof |
| CN104977427B (en) * | 2015-06-29 | 2018-01-02 | 广西师范大学 | A kind of acceleration sensing device of bicylindrical shape metal medium metal surface plasma waveguiding structure |
| CN105973846B (en) * | 2016-05-03 | 2018-06-26 | 天津理工大学 | A kind of mim type nanometer rods dimer that Fano resonance three times can be achieved |
| CN105759353A (en) * | 2016-05-16 | 2016-07-13 | 五邑大学 | Adjustable near-infrared band plasma bi-induction transparent nanometer device |
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