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Title: Towards large area THz electromagnetic metamaterials
Authors: Moser, H.O. 
Bahou, M. 
Chen, A. 
Heussler, S.P. 
Jian, L.K. 
Kalaiselvi, S.M.P. 
Liu, G. 
Maniam, S.M. 
Bin Mahmood, S. 
Gu, P.D. 
Wen, L. 
Kong, J.A.
Chen, H.S.
Cheng, X.X.
Wu, B.I.
Casse, B.D.F.
Rockstuhl, C.
Lederer, F.
Keywords: Infrared
Left-handed materials
Microstructure fabrication
Synchrotron radiation
Issue Date: 2008
Citation: Moser, H.O., Bahou, M., Chen, A., Heussler, S.P., Jian, L.K., Kalaiselvi, S.M.P., Liu, G., Maniam, S.M., Bin Mahmood, S., Gu, P.D., Wen, L., Kong, J.A., Chen, H.S., Cheng, X.X., Wu, B.I., Casse, B.D.F., Rockstuhl, C., Lederer, F. (2008). Towards large area THz electromagnetic metamaterials. Proceedings of SPIE - The International Society for Optical Engineering 7029 : -. ScholarBank@NUS Repository.
Abstract: Up to date, electromagnetic metamaterials (EM3) have been mostly fabricated by primary pattern generation via electron beam or laser writer. Such an approach is time-consuming and may have limitations of the area filled with structures. Especially, electron beam written structures are typically confined to areas of a few 100×100 μm2. However, for meaningful technological applications, larger quantities of good quality materials are needed. Lithography, in particular X-ray deep lithography, is well suited to accomplish this task. Singapore Synchrotron Light Source (SSLS) has been applying its LIGA process that includes primary pattern generation via electron beam or laser writer, X-ray deep lithography and electroplating to the micro/nano-manufacturing of high-aspect ratio structures to produce a variety of EM3 structures. Starting with Pendry's split ring resonators, we have pursued structure designs suitable for planar lithography since 2002 covering a range of resonance frequencies from 1 to 216 THz. More recently, string-like structures have also been included. Latest progress made in the manufacturing and characterization of quasi 3D metamaterials having either split ring or string structures over areas of about ≈1 cm2 extension will be described.
Source Title: Proceedings of SPIE - The International Society for Optical Engineering
ISBN: 9780819472496
ISSN: 0277786X
DOI: 10.1117/12.794395
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