期刊
OPTICS EXPRESS
卷 20, 期 15, 页码 16815-16822出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.20.016815
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资金
- NRF [20110017603]
- World-Class University program
- MEST through the NRF of Korea [R31-10026]
- Core Technology Development Program for Next-Generation Solar Cells of the Research Institute for Solar and Sustainable Energies (RISE), GIST
- Ministry of Education, Science & Technology (MoST), Republic of Korea [gist-15] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2011-0017603] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Terahertz (THz) absorbers with surface relief structures (SRSs) were designed and fabricated on a flexible polydimethylsiloxane(PDMS) substrate by using a stamping method. The silicon mold used for the stamping process was prepared by using a crystallographic wet etching method with 45% KOH solution at 80 degrees C. The flexible THz absorber, consisting of micropyramids with a base width of 240 mu m, demonstrated nearly perfect absorbance higher than 99% owing to the dramatically reduced surface reflectance of the SRS. The reflectance of the PDMS with the SRS was less than 1%, which is only 1/100th of that measured from a bare PDMS at frequency higher than 1 THz. (C) 2012 Optical Society of America
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