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이돈근,장동리,강영수 한국자기공명학회 2002 Journal of the Korean Magnetic Resonance Society Vol.6 No.2
The photoproduced cation radical of N-methylphenothiazine (PC1) doped into phenyltriethoxysilane (PhiTEOS), vinyltriethoxysilane (VTEOS) and methyltriethoxysilane (METOS) was studied with electron spin resonance (ESR) and electron nuclear double resonance (ENDOR). The photoinduced charge separation efficiency was determined by integration of ESR spectra which correspond to the amount of photoproduced cation radical in the matrices. This was correlatively studied with the polarity and pore size of the gel matrices. The relative polarity of the matrices was determined by measuring max values of PC1 in the different matrices. The relative pore size among the matrices was determined by measuring relative proton matrix ENDOR line widths of the photoproduced cation radical of PC1. The decay kinetic constants of the cation radical of PC1 in the different matrices was relatively studied with fitting the biexponential decay curves after exposure at the ambient condition. This is correlatively interpreted with the polarity and pore size of the matrices 영어논문
ROS2 기반 Map Sharing 을 통한 멀티로봇 제어
이돈근,김윤성,정성훈,문형일,유창승,이강영,최준열 제어로봇시스템학회 2021 제어로봇시스템학회 국내학술대회 논문집 Vol.2021 No.6
In this paper, a method to share maps between robots within the same network domain using ROS2 (Robot Operating System) has been proposed. ROS2 supports communications between robots without edge server using DDS (Data Distribution Service) communication for multi-robot control. For cooperative cleaning between robots, the method to share a coverage map and SLAM data has been defined. To verify the proposed method, we implemented a robot monitoring tool based on Rviz and verified the multi-robot control operation using our cleaning robots.
이돈근,강영수 한국전자통신연구원 2004 ETRI Journal Vol.26 No.3
We formed silver nanocrystallites by the thermal decomposition of a Ag+1-oleate complex, which was prepared by a reaction with AgNO3 and sodium oleate in a water solution. The resulting monodispersed silver nanocrystallites were produced by controlling the temperature (290 °C). Transmission electron microscopic (TEM) images of the particles showed a 2-dimensional assembly of the particles with a diameter of 9.5 ± 0.7 nm, demonstrating the uniformity of these nanocrystallites. An energy-dispersive X-ray (EDX) spectrum and X-ray diffraction (XRD) peaks of the nanocrystallites showed the highly crystalline nature of the silver structure. We analyzed the decomposition of the Ag+1-oleate complex using a Thermo Gravimetric Analyzer (TGA) and observed the crystallization process using XRD.
김진수,이돈근,강영수 한국자기공명학회 2005 Journal of the Korean Magnetic Resonance Society Vol.9 No.2
The interaction of poly(ethylene glycol)(PEG) with cationic dodecyl trimethyl ammonium bromide (DTAB)micelle was studied with electron spin resonance (ESR) by determining line widths of the ESR spectra and coupling constant of nitrogen(AN). The degree of ESR line shape change such as line widths and coupling constant indicated that PEG mixes well with DTAB micelle due to a great hydrophobic interaction with surfactant alkyl chains. This suggests that the PEG can be used as non-ionic surfactant to disperse the exposed oil in the ocean. 영어논문