Hiding a realistic object using a broadband terahertz invisibility cloak.

Scientific Reports
Fan ZhouCheng Sun

Abstract

The invisibility cloak has been a long-standing dream for many researchers over the decades. Using transformation optics, a three-dimensional (3D) object is perceived as having a reduced number of dimensions, making it "undetectable" judging from the scattered field12345. Despite successful experimental demonstration at microwave and optical frequencies6789101112, the spectroscopically important Terahertz (THz) domain13141516 remains unexplored due to difficulties in fabricating cloaking devices that are optically large in all three dimensions. Here, we report the first experimental demonstration of a 3D THz cloaking device fabricated using a scalable Projection Microstereolithography process. The cloak operates at a broad frequency range between 0.3 and 0.6 THz, and is placed over an α-lactose monohydrate absorber with rectangular shape. Characterized using angular-resolved reflection THz time-domain spectroscopy (THz-TDS), the results indicate that the THz invisibility cloak has successfully concealed both the geometrical and spectroscopic signatures of the absorber, making it undetectable to the observer.

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Citations

Feb 27, 2016·ACS Nano·Ali K YetisenSeok Hyun Yun
Sep 14, 2016·Scientific Reports·Haifeng WangSonglin Zhuang
Dec 21, 2013·Scientific Reports·Jian Jie LiSong Lin Zhuang
Aug 8, 2013·Scientific Reports·Stefan MühligCarsten Rockstuhl
Nov 2, 2014·Scientific Reports·Lin Xu, Huanyang Chen
Dec 22, 2017·Nano Convergence·Takuo Tanaka, Atsushi Ishikawa
Jan 19, 2012·Advanced Materials·Dachuan LiangWeili Zhang
Oct 24, 2013·Optics Express·XiaoFei ZangXiaoBin Wang
Feb 12, 2014·Optics Express·XiaoFei ZangHaiBin Zhu
Aug 1, 2012·Nanoscale·Yongmin Liu, Xiang Zhang
Apr 2, 2014·Optics Letters·Anshuman KumarNicholas X Fang
Aug 26, 2017·Scientific Reports·U Las HerasE Solano
Feb 8, 2020·Scientific Reports·Paris Ang, George V Eleftheriades
Jul 15, 2020·Scientific Reports·Norhan A SalamaMohamed A Swillam
Sep 15, 2015·Applied Optics·Mathieu NierenbergerPierre Renaud
Apr 8, 2017·Scientific Reports·Yafeng BiJun Yang
May 11, 2013·Advanced Materials·Xiang XiongMu Wang
Nov 3, 2017·Optics Express·Barmak HeshmatRamesh Raskar
Feb 1, 2020·Optics Letters·Shan ZhuYadong Xu
Mar 2, 2012·Optics Letters·Xueqian ZhangWeili Zhang
Aug 6, 2020·Optics Express·Jiu-Sheng Li, Chen Zhou

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Methods Mentioned

BETA
X-ray

Software Mentioned

PμSL
COMSOL Multiphysics

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