Thermal cloak with adaptive heat source to proactively manipulate temperature field in heat conduction process
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Heat and Mass Transfer"
DOI: 10.1016/j.ijheatmasstransfer.2018.07.035
Abstract: Abstract Thermal cloaks can thermally hide an object without disturbing background thermal field. The coordinate transformation method for designing conventional thermal cloaks face some challenges that the physical properties of metamaterials are required to be… read more here.
Keywords: cloak; field; heat source; heat ... See more keywords
Nonlinear transformation-based broadband cloaking for flexural waves in elastic thin plates
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Sound and Vibration"
DOI: 10.1016/j.jsv.2018.12.025
Abstract: Abstract Controlling and guiding elastic waves in solids is more complicated compared with electromagnetic and acoustic waves; design and fabrication of an elastic wave cloak with non-singular, homogeneous, and isotropic material parameters is a challenging… read more here.
Keywords: flexural waves; nonlinear transformation; waves elastic; cloak ... See more keywords
Influences of imperfectness and inner constraints on an acoustic cloak with unideal pentamode materials
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Sound and Vibration"
DOI: 10.1016/j.jsv.2019.06.005
Abstract: Abstract Pentamode materials are elastic solids with vanishing shear modulus, and can be used to cloak underwater sound with solid state and broadband advantages. However, pentamode materials produced with microstructures have inevitable small shear modulus.… read more here.
Keywords: constraints acoustic; pentamode materials; cloak; acoustic cloak ... See more keywords
Infrared Invisibility Cloak Based on Polyurethane-Tin Oxide Composite Microtubes.
Sign Up to like & getrecommendations! Published in 2019 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.8b22535
Abstract: An invisibility cloak based on visible rays with a refractive index similar to that of air can effectively conceal people or objects from human eyes. However, even if an invisibility cloak based on visible rays… read more here.
Keywords: invisibility cloak; cloak based; thermal radiation; cloak ... See more keywords
Metasurface Approach to External Cloak and Designer Cavities
Sign Up to like & getrecommendations! Published in 2018 at "ACS Photonics"
DOI: 10.1021/acsphotonics.7b01362
Abstract: A metasurface, with only a single layer of artificial atoms for ease of fabrication, can become a practical surface-equivalent route to transformation optical (TO) applications. The previous design paradigm for a metasurface carpet cloak is… read more here.
Keywords: approach external; cloak; external cloak; cloak designer ... See more keywords
Controlling frequency dispersion in electromagnetic invisibility cloaks
Sign Up to like & getrecommendations! Published in 2019 at "Scientific Reports"
DOI: 10.1038/s41598-019-42481-7
Abstract: Electromagnetic cloaking, as challenging as it may be to the physicist and the engineer has become a topical subject over the past decade. Thanks to the transformations optics (TO) invisibility devices are in sight even… read more here.
Keywords: frequency dispersion; cloak; frequency; spherical cloak ... See more keywords
Broadband cross circularly polarized carpet invisibility cloak based on Pancharatnam–Berry phase reflective metasurface
Sign Up to like & getrecommendations! Published in 2023 at "Laser Physics Letters"
DOI: 10.1088/1612-202x/acd7e1
Abstract: We present a broadband circularly polarized reflective metasurface carpet cloak. The metasurface unit cell is composed of two crossed H-shaped metal patterns. When the incident wave is left-handed circularly polarization (LCP), the metasurface can achieve… read more here.
Keywords: reflective metasurface; cross; cloak; carpet ... See more keywords
CLOAK: A Stream Cipher Based Encryption Protocol for Mobile Cloud Computing
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Access"
DOI: 10.1109/access.2017.2744670
Abstract: Mobile device and its applications have revolutionized the way we store and share data. It is becoming a warehouse of users personal information. Unluckily, most of these data are stored in an unencrypted format, prone… read more here.
Keywords: protocol; encryption; stream cipher; cloak ... See more keywords
Broadband Carpet Cloak Designed Using Nanocomposite Metamaterials for 3–5-μm Wavelength Range
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Nanotechnology"
DOI: 10.1109/tnano.2016.2625741
Abstract: In this paper, a broadband carpet cloak using nanocomposite layers to operate in whole 3–5-μm wavelength band is designed successfully. For this purpose, spherical nanometals or doped semiconductors with desired plasma frequency are proposed. In… read more here.
Keywords: carpet cloak; using nanocomposite; broadband carpet; cloak ... See more keywords
Target illusion by shifting a distance.
Sign Up to like & getrecommendations! Published in 2018 at "Optics express"
DOI: 10.1364/oe.26.024280
Abstract: A novel homogeneous illusion device with arbitrary polygonal cross section that acts as either invisible cloak or shifting medium has been proposed and designed based on coordinate transformation method. The material parameters of the device… read more here.
Keywords: illusion; cloak; target; shifting distance ... See more keywords
Design and experimental demonstration of Doppler cloak from spatiotemporally modulated metamaterials based on rotational Doppler effect.
Sign Up to like & getrecommendations! Published in 2020 at "Optics express"
DOI: 10.1364/oe.382700
Abstract: Recently, spatiotemporally modulated metamaterial has been theoretically demonstrated for the design of Doppler cloak, a technique used to cloak the motion of moving objects from the observer by compensating for the Doppler shift. Linear Doppler… read more here.
Keywords: cloak; doppler effect; rotational doppler; doppler ... See more keywords