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金乾德(Gun-Duk Kim),孫根植(Geun-Sik Son),李鶴淳(Hak-Soon Lee),金基道(K-Do Kim),李相信(Sang-Shin Lee) 대한전기학회 2008 전기학회논문지 Vol.57 No.8
A glucose biosensor using a microdisk resonator in polymeric waveguides was developed by observing either the shift in the resonant wavelength or the variation in the optical power. The deformation in the transfer curve of the vertically coupled resonator sensor resulting from the variation in the disk-to-ring coupling, which was incurred by the application of the target analyte, was suppressed. And the refractive index of the polymeric waveguide was devised to closely follow that of the analyte itself for enhancing the sensitivity of the sensor. The sensitivity and measurement range were observed to be respectively 0.14 pm/(㎎/dL) and 1500 ㎎/dL (theoretically up to 4700 ㎎/dL), for the wavelength shift method and 0.04 ㏈/(㎎/dL) and 140 ㎎/dL the power variation scheme.
김건호,B.S. Kim,C.S. Wi,G. Kim,이종덕,J.J. Lee,강정수,K.J. Kim,S.S. Lee,한상욱 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.48 No.5I
The initial stage of interface formation at Mn/Si at room temperature (RT) and the growth of manganese silicide were studied by using photoemission spectroscopy (PES) and X-ray absorption spectroscopy with synchrotron radiation. The Mn coverage dependence of the relative intensities of the Si 2p and the Mn 3p core-level PES spectra revealed that the growth of Mn on Si(111)-7×7 at RT started in a layer-by-layer growth at a coverage of less than 0.5 ML. The line shape of Mn 3p XAS spectra also showed no reaction between Mn and Si at RT. The valence-band PES spectra of the three manganese-silicide samples, MSS, MSH, and MSP, showed the same metallic emission. The different line shapes of the Si 2p core-level and valence-band spectra of MSS and MSP compared to those of MSR originate from a Si overlayer on the silicide surface.