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카드뮴 셀레나이드 양자점과 단일벽 탄소나노튜브로 구성된 이종 나노 소재를 기반으로 한 광전소자의 제작 및 특성평가
심형철 ( Hyung Cheoul Shim ),정소희 ( So Hee Jeong ),한창수 ( Chang Soo Han ),김수현 ( Soo Hyun Kim ) 한국센서학회 2010 센서학회지 Vol.19 No.2
In this paper, we fabricated the optoelectronic device based on Cadmium selenide(CdSe) nanocrystal quantum dots (NQDs)/single-walled carbon nanotubes(SWNTs) heterostructure using dieletrophoretic force. The efficient charge transfer phenomena from CdSe to SWNT make CdSe-Pyridine(py)-SWNT unique heterostructures for novel optoelectronic device. The conductivity of CdSe-py-SWNT was increased when it was exposed at ultra violet(UV) lamp, and varied as a function of wavelength of incident light.
현경학(Kyung Hak Hyun),김은호(Eun Ho Kim),심형철(Hyung Cheoul Shim),곽윤근(Yoon Keun Kwak) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11
In service robot or personal robot, it is important to recognize human emotion or intend for friendly interaction between human and robot. Many works about emotion features have been reported, however, there are lots of types of features and many combinations of features, so study for feature selection is needed. In this paper, we studied the feature selection based on frequency characteristics and compared it with existing method.