scholarly journals Infrared non-invasive sub-wavelength microscopy with metamaterials

Eureka ◽  
2012 ◽  
Vol 3 (1) ◽  
pp. 11-18
Author(s):  
Ward D Newman
Keyword(s):  
Effective Medium Theory ◽  
Design Method ◽  
High Spatial Frequency ◽  
Diffraction Limit ◽  
Classical Electrodynamics ◽  
Medium Theory ◽  
Hyperbolic Metamaterials ◽  
Conventional Microscopy ◽  
And Performance ◽  
Sub Wavelength

I demonstrate that hyperbolic metamaterials may provide the solution to the long-standing prob- lem of the fundamental diffraction limit plaguing conventional microscopy and optical imaging sys- tems. Presented here is the formalism of the theory, classical electrodynamics, used to describe the diffraction limit and sub-wavelength imaging using hyperbolic metamaterials. Effective medium theory is then derived and put forth as a design method for such hyperbolic metamaterials. I then outline the design of a planar device based on a hyperbolic metamaterial for use in infrared mi- croscopy, and present numerical simulations to demonstrate the behaviour and performance of the device. The device employs multilayers of InGaAs/AlInAs and is capable of sub-diffraction imaging resolution in the wavelength range of 8.8 - 10.5 μm. I show that high spatial frequency waves, which normally decay in vacuum, are allowed to propagate and reach the far-field in a hyperbolic meta- material. Using a Green’s function formalism to describe optical sources, sub-wavelength imaging capabilities of hyperbolic metamaterials is shown. Finally, potential device applications using the designed metamaterial are motivated.

scholarly journals Anisotropic Photonics Topological Transition in Hyperbolic Metamaterials Based on Black Phosphorus

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1694
Author(s):  
Zengping Su ◽  
Yueke Wang
Keyword(s):  
Effective Medium Theory ◽  
Black Phosphorus ◽  
Full Width ◽  
Half Maximum ◽  
The Finite Element Method ◽  
Medium Theory ◽  
Hyperbolic Metamaterials ◽  
Topological Transition ◽  
Incident Plane ◽  
Plane Anisotropy

Based on in-plane anisotropy of black phosphorus (BP), anisotropic photonics topological transition (PTT) can be achieved by the proposed hyperbolic metamaterials structure, which is composed of alternating BP/SiO2 multilayer. Through effective medium theory and calculated iso-frequency contour, PTT can be found by carefully choosing the incident plane and other parameters. With the finite element method and transfer matrix method, a narrow angular optical transparency window with angular full width at half maximum of 1.32° exists at PTT. By changing the working wavelength, thickness of SiO2, or electron doping of black phosphorus, the incident plane of realizing PTT can be modulated, and anisotropic PTT is achieved.

Optical Properties of DLC-Ag Nanocomposite and Grating Structures on their Base

2014 ◽  
Vol 490-491 ◽  
pp. 53-57 ◽  
Author(s):  
Iryna Yaremchuk ◽  
Asta Tamulevičienė ◽  
Tomas Tamulevičius ◽  
Sigitas Tamulevičius
Keyword(s):  
Effective Medium Theory ◽  
Carbon Film ◽  
Visible Range ◽  
Diamond Like Carbon ◽  
Wave Analysis ◽  
Medium Theory ◽  
Rigorous Coupled Wave Analysis ◽  
Sensing Applications ◽  
Rigorous Coupled Wave ◽  
Sub Wavelength

We present the study based on extended Maxwell-Garnett effective medium theory for the effective dielectric function of the diamond like carbon film with embedded silver nanoparticles (DLC-Ag) and rigorous coupled-wave analysis to evaluate resonance characteristics in a visible range of periodic 1-D grating structure on their base. The relief sub-wavelength grating structures on base DLC-Ag nanocomposite have been investigated for sensing applications.

scholarly journals Hyperbolic metamaterials: beyond the effective medium theory

Optica ◽  
2016 ◽  
Vol 3 (12) ◽  
pp. 1388 ◽  
Author(s):  
Tengfei Li ◽  
Jacob B. Khurgin
Keyword(s):  
Effective Medium Theory ◽  
Effective Medium ◽  
Medium Theory ◽  
Hyperbolic Metamaterials

AN INVERSE DESIGN METHOD FOR METAMATERIAL SHRINKING DEVICE

2013 ◽  
Vol 27 (25) ◽  
pp. 1350182 ◽  
Author(s):  
TINGHUA LI ◽  
MING HUANG ◽  
JINGJING YANG ◽  
JIA ZENG ◽  
JIN LU
Keyword(s):  
Inverse Method ◽  
Effective Medium Theory ◽  
Design Method ◽  
Transformation Function ◽  
Inverse Design ◽  
Medium Theory ◽  
Material Parameters ◽  
Full Wave ◽  
Traditional Design ◽  
Inverse Design Method

In this paper, an inverse method to determine the parameters of metamaterial shrinking device is developed. Different from the traditional design method, of which the transformation function must be known in advance, this method allows us to directly obtain material parameters of device without any knowledge of the corresponding transformation function. Moreover, to further remove the inhomogeneity and anisotropy of material parameters, layered device composed of only homogeneous and isotropic materials is presented based on effective medium theory. The validity of such a method and shrinking effect of designed device are confirmed by full-wave simulations.

Optimal design of sub-wavelength metal rectangular gratings for polarizing beam splitter based on effective medium theory

2009 ◽  
Vol 18 (12) ◽  
pp. 5326-5330 ◽  
Author(s):  
Zhao Hua-Jun ◽  
Peng Yong-Jun ◽  
Tan Ju ◽  
Liao Chang-Rong ◽  
Li Peng ◽  
...  
Keyword(s):  
Optimal Design ◽  
Beam Splitter ◽  
Effective Medium Theory ◽  
Effective Medium ◽  
Medium Theory ◽  
Polarizing Beam Splitter ◽  
Sub Wavelength

scholarly journals Near-Field Heat Transfer between Multilayer Hyperbolic Metamaterials

2017 ◽  
Vol 72 (2) ◽  
pp. 115-127 ◽  
Author(s):  
Svend-Age Biehs ◽  
Philippe Ben-Abdallah
Keyword(s):  
Heat Transfer ◽  
Radiative Heat ◽  
Effective Medium Theory ◽  
Near Field ◽  
Single Layer ◽  
Exact Results ◽  
Medium Theory ◽  
Hyperbolic Metamaterials ◽  
Surface Modes ◽  
The Impact

AbstractWe review the near-field radiative heat flux between hyperbolic materials focusing on multilayer hyperbolic meta-materials. We discuss the formation of the hyperbolic bands, the impact of ordering of the multilayer slabs, as well as the impact of the first single layer on the heat transfer. Furthermore, we compare the contribution of surface modes to that of hyperbolic modes. Finally, we also compare the exact results with predictions from effective medium theory.

scholarly journals A modular design method based on TRIZ and AD and its application to cutter changing robot

2021 ◽  
Vol 13 (7) ◽  
pp. 168781402110343
Author(s):  
Mei Yang ◽  
Yimin Xia ◽  
Lianhui Jia ◽  
Dujuan Wang ◽  
Zhiyong Ji
Keyword(s):  
Modular Design ◽  
Design Method ◽  
Idea Generation ◽  
Design Parameters ◽  
Problem Analysis ◽  
Concept Design ◽  
Functional Requirements ◽  
Shield Tunneling ◽  
Structural Hierarchy ◽  
And Performance

Modular design, Axiomatic design (AD) and Theory of inventive problem solving (TRIZ) have been increasingly popularized in concept design of modern mechanical product. Each method has their own advantages and drawbacks. The benefit of modular design is reducing the product design period, and AD has the capability of problem analysis, while TRIZ’s expertise is innovative idea generation. According to the complementarity of these three approaches, an innovative and systematic methodology is proposed to design big complex mechanical system. Firstly, the module partition is executed based on scenario decomposition. Then, the behavior attributes of modules are listed to find the design contradiction, including motion form, spatial constraints, and performance requirements. TRIZ tools are employed to deal with the contradictions between behavior attributes. The decomposition and mapping of functional requirements and design parameters are carried out to construct the structural hierarchy of each module. Then, modules are integrated considering the connections between each other. Finally, the operation steps in application scenario are designed in temporal and spatial dimensions. Design of cutter changing robot for shield tunneling machine is taken as an example to validate the feasibility and effectiveness of the proposed method.

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