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Large-Scale Soft Colloidal Template Synthesis of 1.4 nm Thick CdSe Nanosheets
Son, Jae Sung,Wen, Xiao-Dong,Joo, Jin,Chae, Jungseok,Baek, Sung-il,Park, Kunsu,Kim, Jeong Hyun,An, Kwangjin,Yu, Jung Ho,Kwon, Soon Gu,Choi, Sang-Hyun,Wang, Zhongwu,Kim, Young-Woon,Kuk, Young,Hoffmann, WILEY-VCH Verlag 2009 Angewandte Chemie. international edition Vol.48 No.37
<B>Graphic Abstract</B> <P>Soft as silk: Single-layered (right) and lamellar-structured two-dimensional (2D) CdSe nanocrystals (left) as thin as 1.4 nm can be prepared by a soft colloidal template method. Assembly of the 2D nanocrystals can be controlled by variation of the interaction between organic layers in soft templates. The current synthetic process is relatively easy to scale up, and multigram quantities can be obtained in a single batch. <img src='wiley_img/14337851-2009-48-37-ANIE200902791-content.gif' alt='wiley_img/14337851-2009-48-37-ANIE200902791-content'> </P>
Selective resolution of phonon modes in STM-IETS on clean and oxygen-adsorbed Cu(100) surfaces
Lee, Minjun,Oh, Myungchul,Jeon, Hoyeon,Yi, Sunwouk,Zoh, Inhae,Zhang, Chao,Chae, Jungseok,Kuk, Young Elsevier 2019 Surface science Vol.689 No.-
<P><B>Abstract</B></P> <P>The observation of surface phonon using scanning probe microscopy can provide important information related to local structural and electrical properties. In this study, surface phonon modes on a Cu(100) surface were measured using inelastic tunneling spectroscopy of scanning tunneling microscopy. One phonon mode was measured at 3.6 meV on a clean Cu(100) surface. On an oxygen-adsorbed Cu(100) surface, another phonon mode was measured at 13.5 meV. This phonon mode was considered to be enhanced by the symmetry created by Cu-missing rows. The spatially varying <I>d<SUP>2</SUP>I/dV<SUP>2</SUP> </I> map showed the effect of surface stress relaxation.</P> <P><B>Highlights</B></P> <P> <UL> <LI> We measured the surface phonon modes on a bare Cu(100) surface and two reconstructed oxidized Cu(100) surfaces. </LI> <LI> These measurements were performed with different selection rules owing to the structures of the surfaces and the probing tips. </LI> <LI> A geometrically sharp STM tip was an important factor for resolving many phonon mode peaks on the surface. </LI> <LI> The symmetry of the phonon modes was directly related to the STM-IETS signal strength. </LI> <LI> Broken symmetry due to surface stress relaxation can be another factor determining the STM-IETS signal. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Full-colour quantum dot displays fabricated by transfer printing
Kim, Tae-Ho,Cho, Kyung-Sang,Lee, Eun Kyung,Lee, Sang Jin,Chae, Jungseok,Kim, Jung Woo,Kim, Do Hwan,Kwon, Jang-Yeon,Amaratunga, Gehan,Lee, Sang Yoon,Choi, Byoung Lyong,Kuk, Young,Kim, Jong Min,Kim, Kin Springer Science and Business Media LLC 2011 Nature photonics Vol.5 No.3