A New Glhuanpii-3 Electromagnetic Invisible Cloak

2018 ◽  
Author(s):  
Jianhua Li ◽  
Feng Xie ◽  
Lee Xie ◽  
Ganquan Xie
Keyword(s):  
Invisible Cloak

scholarly journals Paper-based flexible metamaterial for microwave applications

2021 ◽  
Vol 8 ◽  
pp. 6
Author(s):  
Zidong Zhang ◽  
Yaman Zhao ◽  
Guohua Fan ◽  
Wenjin Zhang ◽  
Yao Liu ◽  
...  
Keyword(s):  
Negative Refraction ◽  
Electromagnetic Properties ◽  
Paper Substrate ◽  
Future Directions ◽  
Microwave Application ◽  
Electromagnetic Devices ◽  
Research Fields ◽  
Invisible Cloak ◽  
Application Fields ◽  
Design Freedom

Metamaterial has become a hotspot in many research fields, including electromagnetism, thermodynamics and mechanics, as it can offers additional design freedom for material to obtain novel properties. Especially for the electromagnetic devices, various interesting electromagnetic properties which cannot be found in nature materials can be realized, such as negative refraction, invisible cloak, etc. Herein, we provide an overview of paper-based metamaterial for microwave application. This work reviews the metamaterial realized on paper substrate, including the fabrication techniques, application fields, as well as the outlook on future directions of the paper-based metamaterial for the readership.

Study on Design and Mechanism of a New Invisible Cloak for Visible Light

2014 ◽  
Vol 1035 ◽  
pp. 514-519
Author(s):  
Jing Bo Zhao ◽  
Hong Yao ◽  
Juan Na Jiang
Keyword(s):  
Visible Light ◽  
Total Internal Reflection ◽  
Low Cost ◽  
Visible Region ◽  
Transformation Method ◽  
Macroscopic Object ◽  
Propagation Of Light ◽  
Invisible Cloak ◽  
New Type ◽  
Macroscopic Objects

In order to realize the macroscopic objects invisible in the visible region, according to the law of refraction, total internal reflection law and symmetry reduction transformation method, a new type of visible light stealth cloak was designed. The cloak was prepared using the ordinary homogeneous and isotropic glass materials, which can guide the light around the hidden region, and the direction of propagation of light has not changed. Thus the macroscopic object achieve the perfect stealth. The invisible cloak in air environment for arbitrary polarized visible light have stealth features, easy processing, low cost, has potential application value.

Optimization of Uniaxial Multilayer Cylinders Used for Invisible Cloak Realization

2010 ◽  
Vol 58 (10) ◽  
pp. 3397-3401 ◽  
Author(s):  
Branimir Ivsic ◽  
Tin Komljenovic ◽  
Zvonimir Sipus
Keyword(s):  
Invisible Cloak

Invisible Cloak Fails

2015 ◽  
Author(s):  
Fu Xiao ◽  
Xiaohui Xie ◽  
Hai Zhu ◽  
Lijuan Sun ◽  
Ruchuan Wang
Keyword(s):  
Invisible Cloak

Analysis of Uniaxial Multilayer Cylinders Used for Invisible Cloak Realization

2009 ◽  
Vol 57 (5) ◽  
pp. 1521-1527 ◽  
Author(s):  
Branimir Ivsic ◽  
Zvonimir Sipus ◽  
Silvio Hrabar
Keyword(s):  
Invisible Cloak

scholarly journals Invisibility Cloak using Color Detection and Segmentation with Open CV

2020 ◽  
Vol 9 (4) ◽  
pp. 1621-1624
Keyword(s):  
Image Processing ◽  
Image Segmentation ◽  
Harry Potter ◽  
Invisibility Cloak ◽  
Invisible Cloak ◽  
The World ◽  
Color Detection ◽  
False Sense ◽  
Collective Imagination ◽  
Science Fantasy

Have you ever thought of making visible things invisible, just like the Harry Potter? Have you ever thought how does one supersede backgrounds and add effects in a movie? The cloak was magical and invisible in Harry Potter, the movie. As we know there is no magic and no invisible cloak which exists in the world. It’s all about the graphics tricks. The concept of an invisibility cloak is a mixture of science, fantasy, and the collective imagination. This paper helps to create one’s own ‘Invisibility Cloak’.It will make use of Python and OpenCV module specifically targeting Image Processing and Image Segmentation to create a false sense of invisibility in the frame. It will explore how an object of a specific color or texture can be manipulated using the OpenCV library of python. To achieve this, initially we’ll be capturing and storing the backdrop frame . Thereafter we’ll be identifying the red coloured fabric by making use of the above mentioned algorithms. Then we’ll segment out the red colored fabric by generating a mask and then finally , we’ll generate the final augmented(magical) output to create Invisibility cloak. These steps are discussed deeper in the paper

scholarly journals Role of nanophotonics in the birth of seismic megastructures

Nanophotonics ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 1591-1605 ◽  
Author(s):  
Stéphane Brûlé ◽  
Stefan Enoch ◽  
Sébastien Guenneau
Keyword(s):  
Photonic Crystals ◽  
Soil Structure ◽  
Soil Structure Interaction ◽  
Striking Similarity ◽  
Structure Interaction ◽  
Invisible Cloak ◽  
Structured Soils ◽  
Complex Phenomena ◽  
Coordinate Transforms

AbstractThe discovery of photonic crystals 30 years ago in conjunction with research advances in plasmonics and metamaterials, has inspired the concept of decameter scale metasurfaces, coined seismic metamaterials for an enhanced control of surface (Love and Rayleigh) and bulk (shear and pressure) elastodynamic waves. These powerful mathematical tools of coordinate transforms, effective medium and Floquet-Bloch theories which have revolutionized nanophotonics, can be translated in the language of civil engineering and geophysics. Experiments on seismic metamaterials made of buried elements in the soil demonstrate that the fore mentioned tools make a possible novel description of complex phenomena of soil-structure interaction during a seismic disturbance. But the concepts are already moving to more futuristic concepts and the same notions developed for structured soils are now used to examine the effects of buildings viewed as above surface resonators in megastructures such as metacities. But this perspective of future should not make us forget the heritage of the ancient peoples. Indeed, we finally point out the striking similarity between an invisible cloak design and the architecture of some ancient megastructures as the antique Gallo-Roman theaters and amphitheatres.

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