CN102944907A - Modified composite material for layered intercalation and method for realizing negative refraction - Google Patents
Modified composite material for layered intercalation and method for realizing negative refraction Download PDFInfo
- Publication number
- CN102944907A CN102944907A CN2012104487968A CN201210448796A CN102944907A CN 102944907 A CN102944907 A CN 102944907A CN 2012104487968 A CN2012104487968 A CN 2012104487968A CN 201210448796 A CN201210448796 A CN 201210448796A CN 102944907 A CN102944907 A CN 102944907A
- Authority
- CN
- China
- Prior art keywords
- intercalation
- guest materials
- main part
- composite material
- negative refraction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention belongs to the technical field of optical communication and photoelectron, and particularly relates to a modified composite material for layered intercalation and a method for realizing negative refraction. The invention is characterized in that metal nano particles and the like are inserted into a single crystal material of a layered material by intercalation methods such as a direct reaction method, an ion exchange method, a molecular embedding method, a peeling recombination method, a nano-particle direct intercalation method and a nano-particle in-situ generation method, so that the anisotropy of the layered single-crystal material is enhanced, and a dielectric matrix of the layered composite material is a non-positive-definite matrix to realize negative refraction. The invention has the advantages that starting from the basic theory of electromagnetic waves, a new method for realizing negative refraction of the electromagnetic waves is provided, the working frequency can be improved to the optical frequency, simultaneously the preparation process is simplified, the cost is reduced and the academic significance and the application value are important.
Description
Technical field
The invention belongs to optical communication, photoelectron technology field, particularly the method for a kind of stratiform intercalation modifying compound substance and realization negative refraction thereof.
Background technology
Electromagnetic negative refraction refers to when electromagnetic wave incides in the another kind of medium by a kind of medium, lays respectively at the phenomenon of normal homonymy at the interface refract light and incident light, and this phenomenon is proposed in theory by USSR (Union of Soviet Socialist Republics) physicist Veselago the earliest.Requiring specific inductive capacity and the magnetic permeability of material when proposing the earliest is negative simultaneously, at this moment, satisfies " left-hand rule " and claims that this material is left-handed materials because the electromagnetic electric vector E that propagates in satisfying the material of these conditions, magnetic vector H and ripple lose K.
Electric resonance and magnetic resonance that the realization of left-handed materials is based between artificial metal structural unit and the electromagnetic wave more are realized negative permittivity and magnetic permeability simultaneously, thereby the refractive index that obtains bearing.According to the requirement of Effective medium theory, therefore the size of artificial metal structural unit must, just must reduce the size of artificial structure unit if improve operating frequency much smaller than electromagnetic wavelength under the operating frequency, thereby has produced the limitation of preparation.Simultaneously, produced very strong electromagnetic consumable when electric resonance and magnetic resonance.Because artificial structure's above-mentioned limitation, people wish urgently and can realize electromagnetic negative refractive index by other extraordinary electromagnetic medium or nature material.
The people such as Lindell have proposed a kind of electromagnetic wave negative refraction of utilizing strong anisotropic medium (Indefinite medium) to realize non-left hand characteristic.In four electromagnetic components of the DIELECTRIC CONSTANT ε of this strong anisotropic medium and magnetic permeability μ, only one-component need be arranged is negative value, and other component is all greater than zero.At this moment, electromagnetic equifrequency line is hyp form in the medium, and the phase velocity of the refract light that obtains and group velocity can realize so-called electromagnetic wave " light negative refraction " not point-blank, and this theory is also verified by experiment.Someone has reported the medium/metal sandwich construction, and metal nanometer line array etc. utilizes the strong anisotropy of structure to realize negative refraction.
Summary of the invention
For the prior art deficiency, the invention provides the method for a kind of stratiform intercalation modifying compound substance and realization negative refraction thereof.
A kind of stratiform intercalation modifying compound substance, with the intercalation guest materials as conductive layer, by in the intercalation material of main part, inserting the intercalation guest materials, carry out intercalation modifying, obtain conductive layer and the spaced intercalation modifying compound substance with sandwich construction of dielectric layer; The intercalation composite material that obtains has anisotropy, and its dielectric tensors matrix is nonpositive definite matrix, and namely the symbol of dielectric component is inconsistent, and having just has negatively, and its elementary cell is the molecular structure layer, can use at visible light frequency band; When electromagnetic wave was propagated in this kind intercalation composite material, its equifrequency line was hyperbolic curve; Described intercalation material of main part has anisotropy, is the lamellar single crystal material; Described intercalation guest materials will serve as conductive layer, is metal or conductive organic matter material.
Described intercalation material of main part is mica or vermiculite layered silicate material, or MoS
2, NbS
2, VS
2, SnS
2, WS
2, WSe
2, WTe
2The two chalcogenides of stratiform transition metal, or MoO
3, V
2O
5Monocrystal material.
Described intercalation guest materials is gold or silver metal nano particle, or has benzene, naphthalene, the anthracene organic molecule material of large π key.
A kind of method that realizes negative refraction based on the stratified material intercalation modifying, with the intercalation guest materials as conductive layer, by in the intercalation material of main part, inserting the intercalation guest materials, carry out intercalation modifying, obtain conductive layer and the spaced intercalation composite material with sandwich construction of dielectric layer; The intercalation composite material that obtains has anisotropy, and its dielectric tensors matrix is nonpositive definite matrix, and namely the symbol of dielectric component is inconsistent, and having just has negatively, and its elementary cell is the molecular structure layer, can use at visible light frequency band; When electromagnetic wave was propagated in this kind intercalation composite material, its equifrequency line was hyperbolic curve; Described intercalation material of main part has anisotropy, is the lamellar single crystal material; Described intercalation guest materials will serve as conductive layer, is metal or conductive organic matter material; The optical axis of this intercalation composite material is parallel to the plane of incidence and sample surfaces during use, and energy full-shape negative refraction can be realized in the polarization direction of the electric vector of incident light in the plane of incidence.
Described intercalation material of main part is mica or vermiculite layered silicate material, or MoS
2, NbS
2, VS
2, SnS
2, WS
2, WSe
2, WTe
2The two chalcogenides of stratiform transition metal, or MoO
3, V
2O
5Monocrystal material.
Described intercalation guest materials is gold or silver metal nano particle, or has benzene, naphthalene, the anthracene organic molecule material of large π key.
The method that described intercalation guest materials inserts the intercalation material of main part is direct reaction method, ion exchange process, molecule embedding inlay technique, peel off recombination method, the direct graft process of nano particle or nano particle original position method of formation.
Beneficial effect of the present invention is:
Intercalation material of main part of the present invention is laminar crystalline material, can utilize its anisotropy, simultaneously, because intercalation modifying, the anisotropy of intercalation material of main part used in the present invention is significantly strengthened, thereby has strong anisotropy, utilizes the strong anisotropy of this crystal to realize negative refraction.And the periodic structure unit yardstick of the material of the present invention preparation is little, thereby the working frequency range of the prepared material of the present invention can reach optical frequency.The present invention is from the electromagnetic wave basic theories, proposed a kind of method of brand-new realization electromagnetic wave negative refraction, can make frequency of operation bring up to optical frequency, simplified simultaneously preparation technology, reduced cost.
Description of drawings
Fig. 1 is the structural representation after metal nanoparticle inserts between the stratiform crystal material layer, and wherein lines are lamellar single crystal material structure layer, and open circles is metal nanoparticle;
Fig. 2 is the structural representation after organic material with large π key inserts between the stratiform crystal material layer, and wherein long lines are lamellar single crystal material structure layer, and the short-term bar is the organic material molecule;
Fig. 3 is the plan structure schematic diagram (take naphthalene as example) after organic material with large π key inserts stratified material, and wherein rectangle is the structural sheet of laminar crystalline material, and the hexagon that connects together is the naphthalene molecule;
Fig. 4 is the electromagnetic equifrequency line in the laminar composite, wherein V
PiWith V
GiThe ripple that is respectively incident light loses direction and Poynting vector direction, V
PsWith V
GsThe ripple that is respectively refract light loses direction and Poynting vector direction.
Embodiment
The invention provides the method for a kind of stratiform intercalation modifying compound substance and realization negative refraction thereof, the present invention will be further described below in conjunction with the drawings and specific embodiments.
Embodiment 1
Selecting the lamellar single crystal material is the intercalation material of main part, and the metal nanoparticles such as gold, silver are the intercalation guest materials.The structure of the laminar composite that obtains by intercalation modifying as shown in Figure 1.Metal nanoparticle can generate graft process and peels off the method such as recombination method and insert between the stratiform monocrystalline material layer by the direct graft process of nano particle, nano particle original position, and the anisotropy of intercalation material of main part is significantly strengthened.Cause being parallel to the specific inductive capacity of structural sheet direction for negative, perpendicular to the specific inductive capacity of structural sheet direction for just.
Embodiment 2
Selecting the lamellar single crystal material is the intercalation material of main part, has the organic material of large π key as the intercalation guest materials, such as with the benzene of phenyl ring, naphthalene, anthracene etc.By direct reaction method, ion exchange process, molecule embedding inlay technique with peel off the methods such as recombination method and prepare laminar composite.The structure of the laminar composite of preparation as shown in Figure 2 because the coupling between the large π key, the anisotropy of intercalation composite material significantly strengthens.Fig. 3 has provided the vertical view of this compound substance.Cause being parallel to the specific inductive capacity of structural sheet direction for negative, perpendicular to the specific inductive capacity of structural sheet direction for just.
The permittivity tensor matrix that the laminar composite that success prepares has non-positive definite, when the direction of the component with negative permittivity was parallel to the z axle, the electromagnetic equifrequency line in the laminar composite as shown in Figure 4.Dark circles is the equifrequency line of air, and the black hyperbolic curve is corresponding to the equifrequency line of laminar composite, and incident wave loses the component that loses in the z direction with refraction wave and equates, this moment, the ripple of refract light lost direction V
PsLose direction V with the ripple of incident light
PiLay respectively at the both sides of normal, i.e. the refraction angle of ripple mistake is positive; And for the Poynting vector V of refract light
Gs, according to the derivation result of Maxwell system of equations, the Poynting vector of refract light is the outer normal direction of equifrequency line, with the Poynting vector V of incident light
GiBe positioned at the homonymy of normal, namely the refraction angle of Poynting vector is born.Therefore, can determine when the optical axis of laminar composite is parallel to the plane of incidence and sample surfaces, can make electric vector in the incident light generation energy full-shape negative refraction of plane of incidence polarization.
Claims (7)
1. stratiform intercalation modifying compound substance, it is characterized in that: with the intercalation guest materials as conductive layer, by in the intercalation material of main part, inserting the intercalation guest materials, carry out intercalation modifying, obtain conductive layer and the spaced intercalation modifying compound substance with sandwich construction of dielectric layer; The intercalation composite material that obtains has anisotropy, and its dielectric tensors matrix is nonpositive definite matrix, and namely the symbol of dielectric component is inconsistent, and having just has negatively, and its elementary cell is the molecular structure layer, can use at visible light frequency band; When electromagnetic wave was propagated in this kind intercalation composite material, its equifrequency line was hyperbolic curve; Described intercalation material of main part has anisotropy, is the lamellar single crystal material; Described intercalation guest materials will serve as conductive layer, is metal or conductive organic matter material.
2. a kind of stratiform intercalation modifying compound substance according to claim 1, it is characterized in that: described intercalation material of main part is mica or vermiculite layered silicate material, or MoS
2, NbS
2, VS
2, SnS
2, WS
2, WSe
2, WTe
2The two chalcogenides of stratiform transition metal, or MoO
3, V
2O
5Monocrystal material.
3. a kind of stratiform intercalation modifying compound substance according to claim 1, it is characterized in that: described intercalation guest materials is gold or silver metal nano particle, or has benzene, naphthalene, the anthracene organic molecule material of large π key.
4. method that realizes negative refraction based on the stratified material intercalation modifying, it is characterized in that: with the intercalation guest materials as conductive layer, by in the intercalation material of main part, inserting the intercalation guest materials, carry out intercalation modifying, obtain conductive layer and the spaced intercalation composite material with sandwich construction of dielectric layer; The intercalation composite material that obtains has anisotropy, and its dielectric tensors matrix is nonpositive definite matrix, and namely the symbol of dielectric component is inconsistent, and having just has negatively, and its elementary cell is the molecular structure layer, can use at visible light frequency band; When electromagnetic wave was propagated in this kind intercalation composite material, its equifrequency line was hyperbolic curve; Described intercalation material of main part has anisotropy, is the lamellar single crystal material; Described intercalation guest materials will serve as conductive layer, is metal or conductive organic matter material; The optical axis of this intercalation composite material is parallel to the plane of incidence and sample surfaces during use, and energy full-shape negative refraction can be realized in the polarization direction of the electric vector of incident light in the plane of incidence.
5. method according to claim 4, it is characterized in that: described intercalation material of main part is mica or vermiculite layered silicate material, or MoS
2, NbS
2, VS
2, SnS
2, WS
2, WSe
2, WTe
2The two chalcogenides of stratiform transition metal, or MoO
3, V
2O
5Monocrystal material.
6. method according to claim 4, it is characterized in that: described intercalation guest materials is gold or silver metal nano particle, or has benzene, naphthalene, the anthracene organic molecule material of large π key.
7. method according to claim 4 is characterized in that: the method that described intercalation guest materials inserts the intercalation material of main part is direct reaction method, ion exchange process, molecule embedding inlay technique, peel off recombination method, the direct graft process of nano particle or nano particle original position method of formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104487968A CN102944907A (en) | 2012-11-10 | 2012-11-10 | Modified composite material for layered intercalation and method for realizing negative refraction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104487968A CN102944907A (en) | 2012-11-10 | 2012-11-10 | Modified composite material for layered intercalation and method for realizing negative refraction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102944907A true CN102944907A (en) | 2013-02-27 |
Family
ID=47727868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104487968A Pending CN102944907A (en) | 2012-11-10 | 2012-11-10 | Modified composite material for layered intercalation and method for realizing negative refraction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102944907A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018013055A1 (en) * | 2016-07-12 | 2018-01-18 | National University Of Singapore | Composite materials and processes of manufacturing the same for use as high performance catalysts for water splitting |
| CN109368703A (en) * | 2018-11-15 | 2019-02-22 | 厦门大学 | A kind of tungstic acid preparation of sections method |
| CN109928427A (en) * | 2019-03-21 | 2019-06-25 | 暨南大学 | A kind of double ion intercalation molybdenum oxide nanometer sheet, hetero-junctions and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1978517A (en) * | 2005-11-30 | 2007-06-13 | 中国科学院兰州化学物理研究所 | Method for preparing metal silver molybdenum disulfide hybrid composite material |
| CN101245187A (en) * | 2008-01-08 | 2008-08-20 | 上海大学 | Process for preparing molybdenum trioxide/polyaniline laminated composite material |
| CN102568644A (en) * | 2011-12-30 | 2012-07-11 | 中国科学院长春应用化学研究所 | Supercapacitor electrode material and preparation method thereof |
-
2012
- 2012-11-10 CN CN2012104487968A patent/CN102944907A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1978517A (en) * | 2005-11-30 | 2007-06-13 | 中国科学院兰州化学物理研究所 | Method for preparing metal silver molybdenum disulfide hybrid composite material |
| CN101245187A (en) * | 2008-01-08 | 2008-08-20 | 上海大学 | Process for preparing molybdenum trioxide/polyaniline laminated composite material |
| CN102568644A (en) * | 2011-12-30 | 2012-07-11 | 中国科学院长春应用化学研究所 | Supercapacitor electrode material and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018013055A1 (en) * | 2016-07-12 | 2018-01-18 | National University Of Singapore | Composite materials and processes of manufacturing the same for use as high performance catalysts for water splitting |
| CN109368703A (en) * | 2018-11-15 | 2019-02-22 | 厦门大学 | A kind of tungstic acid preparation of sections method |
| CN109368703B (en) * | 2018-11-15 | 2020-01-07 | 厦门大学 | Preparation method of tungsten trioxide thin sheet |
| CN109928427A (en) * | 2019-03-21 | 2019-06-25 | 暨南大学 | A kind of double ion intercalation molybdenum oxide nanometer sheet, hetero-junctions and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Liu et al. | Simultaneous switching at multiple frequencies and triple plasmon-induced transparency in multilayer patterned graphene-based terahertz metamaterial | |
| Gao et al. | Physics of transparent conductors | |
| Luo et al. | Electric field induced structural color changes of SiO 2@ TiO 2 core–shell colloidal suspensions | |
| Zhao | Bottom-up fabrication methods of optical metamaterials | |
| CN102660740B (en) | Graphene and metal nanoparticle composite film preparation method | |
| Papadakis et al. | Field-effect induced tunability in hyperbolic metamaterials | |
| Liu et al. | Near-field radiative heat transfer in hyperbolic materials | |
| Zhou et al. | Wafer-scale integration of inverted nanopyramid arrays for advanced light trapping in crystalline silicon thin film solar cells | |
| Li et al. | Graphene‑Assisted Assembly of Electrically and Magnetically Conductive Ceramic Nanofibrous Aerogels Enable Multifunctionality | |
| CN104528709A (en) | Preparation method of graphene having high Raman scattering intensity | |
| CN102944907A (en) | Modified composite material for layered intercalation and method for realizing negative refraction | |
| Yang et al. | Tunable subwavelength strong absorption by graphene wrapped dielectric particles | |
| Fleer et al. | Elucidating the crystallite size dependence of the thermochromic properties of nanocomposite VO2 thin films | |
| Zhou et al. | Shaping the emission spectral profile of quantum dots with periodic dielectric and metallic nanostructures | |
| Chen et al. | High polarizability enhanced EPR, optical linear & nonlinear and electric conductivity: Role of NiFe2O4 nanocrystals in transparent tellurite glass-ceramics | |
| Gao et al. | Hyperbolic dispersion and negative refraction in a metal-organic framework Cu-BHT | |
| Huang et al. | Topologically protected generation of spatiotemporal optical vortices with nonlocal spatial mirror symmetry breaking metasurface | |
| Yu et al. | Facile boosting light-scattering of ZnO nanorods in broadband spectrum region | |
| Nong et al. | Perfect absorption in transition metal dichalcogenides-based dielectric grating | |
| CN106395732B (en) | A kind of metal micro-nanostructure for realizing light logic gates | |
| Cao et al. | Preparation and characterization of bifunctional ZnO/ZnS nanoribbons decorated by γ-Fe2O3 clusters | |
| Zheng et al. | Multidimensional modulation of light fields via a combination of two-dimensional materials and meta-structures | |
| Huang et al. | Broadband microwave absorption and adaptable multifunctionality of carbonaceous chiral metamaterials under deep subwavelength thickness | |
| Sang et al. | Dispersion and tunable alignment of colloidal silver nanowires in a nematic liquid crystal for applications in electric–optic devices | |
| CN110941127B (en) | Electrochromic intelligent glass composite film group and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130227 |