All-metal self-supported THz metamaterial--the meta-foil.
Modern metamaterials face functional constraints as they are commonly embedded in or deposited on dielectric materials. We provide a new solution by microfabricating a completely free-standing all-metal self-supported metamaterial. Using upright S-string architecture with the distinctive feature of metallic transverse interconnects, we form a locally stiff, globally flexible space-grid. Infrared Fourier transform interferometry reveals the typical double-peak structure of a magnetically excited left-handed and an electrically excited right-handed pass-band that is maintained under strong bending and heating, and is sensitive to dielectrics. Exploiting UV/X-ray lithography and ultimately plastic moulding, meta-foils can be mass manufactured cost-effectively to serve as optical elements.
Moser
H O
HO
Singapore Synchrotron Light Source (SSLS), National University of Singapore (NUS), 5 Research Link, Singapore 117603. moser@nus.edu.sg
Jian
L K
LK
Chen
H S
HS
Bahou
M
M
Kalaiselvi
S M P
SM
Virasawmy
S
S
Maniam
S M
SM
Cheng
X X
XX
Heussler
S P
SP
bin Mahmood
Shahrain
S
Wu
B-I
BI
D008027:Light; D008420:Manufactured Materials / Q000032:analysis*; D008422:Materials Testing; D008670:Metals / Q000737:chemistry*; D012542:Scattering, Radiation; D055053:Terahertz Radiation
D008670:Metals