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LIGHT PROPAGATING IN METAL SUB-WAVELENGTH-HOLE ARRAYS
YONGAN TANG,BRANISLAV VLAHOVIC,DAVID J. BRADY 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2010 NANO Vol.5 No.5
We investigate the light propagating through a sub-wavelength-hole array in a thin gold film. The extraordinary light transmission (ELT) of the metallic array is observed. This ELT is due to the localized plasmon polaritons, whose production are dependent on the polarization of the light, the periodicity of the array, the features of the hole, and the thickness of the gold film. These parameters of the metallic structures are investigated through the finite difference time domain method. It is possible to obtain a desired transmission spectrum from the sub-wavelength-hole array by designing these parameters.
Yongan Yang,Yuangang Wei,Xiaonan Guo,Pengfei Qi,Hailiang Zhu,Wenjian Tang 한국식품과학회 2019 Food Science and Biotechnology Vol.28 No.4
Glycyrrhetic acid monoglucuronide (GAM) isobtained from the natural sweetener glycyrrhizin throughenzymolysis. Its sweetness concentration–response (C–R)behavior in room-temperature in water was determinedusing two-alternative forced choice discrimination tests. The C–R equation of resultant hyperbolic curve relatingsucrose equivalent (SE, %) to GAM concentration([GAM], mg/L) was SE = 19.6 9 [GAM]/(194.8 ? [GAM]). From the C–R function, Pw (2) ofGAM, relative to a 2% (w/v) sucrose reference, is morethan 900, which has much higher potency than its precursorglycyrrhizin. Molecular modeling showed that GAM isfinely bound into protein 1EWK through conventionalhydrogen bonds, p-Alkyl interactions and Van der Waalsbonds, which exhibited better protein inclusion than Glycyrrhizin. Thus, GAM could be developed