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Seung Eon Moon,박배호,Eun-Kyoung Kim,류한철,Jong Hyurk Park,Kang-Ho Park,Kwang Yong Kang,Min Hwan Kwak,이수재,Sunglyul Maeng,Young Tae Kim 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.3
Highly oriented polycrystalline nickel-oxide films were grown on Pt (111) substrates moderately heated by using a non-reactive pulsed laser deposition method. The oxygen pressure of the process vacuum was varied from 1 to 200 mTorr to study its effect on the composition with the other parameters fixed. The oxygen-pressure-dependent compositional, structural, and electrical properties of the nickel-oxide films were investigated by using X-ray diffraction, atomic force microscopy, scanning electron microscopy, and current-voltage measurements. From the measurements, the oxygen content during deposition was an important factor for the structural properties and for reproducible resistance-switching characteristics.
Giant enhancement of the Raman response due to one-dimensional ZnO nanostructures.
Shin, Hae-Young,Shim, Ee-Le,Choi, Young-Jin,Park, Jong-Hyurk,Yoon, Seokhyun RSC Pub 2014 Nanoscale Vol.6 No.24
<P>We observed giant enhancement of the Raman intensity from 4-Mpy molecules adsorbed on semiconducting one-dimensional ZnO nanostructures, nanowires and nanocones, without involving any noble metals. Interestingly, the enhancement is strongly dependent on the geometry of ZnO nanostructures and can mainly be explained by the cavity-like structural resonance of the electric field. Our results can be applied to systematically create hot spots for Raman signal enhancement using one-dimensional semiconducting nanomaterials.</P>