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Temperature-Dependent Electron–Electron Interaction in Graphene on SrTiO<sub>3</sub>
Ryu, Hyejin,Hwang, Jinwoong,Wang, Debin,Disa, Ankit S.,Denlinger, Jonathan,Zhang, Yuegang,Mo, Sung-Kwan,Hwang, Choongyu,Lanzara, Alessandra American Chemical Society 2017 NANO LETTERS Vol.17 No.10
<P>The electron band structure of graphene on SrTiO3 substrate has been investigated as a function of temperature. The high-resolution angle-resolved photoemission study reveals that the spectral width at Fermi energy and the Fermi velocity of graphene on SrTiO3 are comparable to those of graphene on a BN substrate. Near the charge neutrality, the energy-momentum dispersion of graphene exhibits a strong deviation from the well-known linearity, which is magnified as temperature decreases. Such modification resembles the characteristics of enhanced electron electron interaction. Our results not only suggest that SrTiO3 can be a plausible candidate as a substrate material for applications in graphene-based electronics but also provide a possible route toward the realization of a new type of strongly correlated electron phases in the prototypical two-dimensional system via the manipulation of temperature and a proper choice of dielectric substrates.</P>
Characteristics of Tee Tube Forming Deformation Zone using Plastic Pressure - Building Medium
Kim, Young Suk,Kim, Sung Tae,Shan, Debin,Lu, Yan,Wang, Cheng Lu 대한금속재료학회(대한금속학회) 2000 METALS AND MATERIALS International Vol.6 No.6
An unconventional forming process using plastic pressure-building medium is presented to manufacture tee tube. A special experimental device was designed and built, and a three-dimensional rigid-plastic FEM code was developed to simulate the forming process. On the basis of the results of FEM simulation and experimental research, the plastic deformation of tee tube is divided into five different zones, which reveals the characteristics of metal deformation during the unconventional forming processes.
Growth of Au and ZnS nanostructures <i>via</i> engineered peptide and M13 bacteriophage templates
Chung, Sungwook,Chung, Woo-Jae,Wang, Debin,Lee, Seung-Wuk,De Yoreo, James J. The Royal Society of Chemistry 2018 SOFT MATTER Vol.14 No.16
<P>We demonstrate directed nucleation of Au and ZnS patterns on templates comprised of functional peptides and an M13 bacteriophage. We discuss the control over nucleation in terms of the interplay between enhanced ion binding and reduced interfacial energy resulting from the presence of the templates.</P>
The electronic correlations in graphene standing on SrTiO₃ and platinum substrates
Jinwoong Hwang,Hyejin Ryu,Hwihyeon Hwang,Min-Jeong Kim,Ji-Eun Lee,Qin Zhou,Debin Wang,Ankit S. Disa,Jonathan Denlinger,Yuegang Zhang,Alessandra Lanzara,Sung-Kwan Mo,Choongyu Hwang 한국진공학회 2018 한국진공학회 학술발표회초록집 Vol.2018 No.2