visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2016-01-26 14:00 
일시 2016/1/26, 2PM 
장소 E6-2, #1323 
연사 Dr. Sergei V. Kalinin (Center for Nanophase Materials Sciences, Oak Ridge National Laboratory) 

Electrochemistry on Nano- and Atomic Levels: Scanning Probe Microscopy Meets Deep Data

 

Jan. 26 (Tue), 2PM,  E6-2. #1323
Dr. Sergei V. Kalinin,  Center for Nanophase Materials Sciences, Oak Ridge National Laboratory

 

Structural and electronic properties of oxide surfaces control their physical functionalities and electrocatalytic activity, and are currently of interest for energy generation and storage applications. In this presentation, I will discuss several examples of high-resolution studies of the electronic and electrochemical properties of oxide surfaces enabled by multidimensional scanning probe microscopies. On the mesoscopic scale, combination of strain- and current sensitive scanning probe microscopies allows to build nanometer-scale maps of local reversible and irreversible electrochemical activities. The use of multivariate statistical methods allows separating the complex multidimensional data sets into statistically significant components which in certain cases can be mapped onto individual physical mechanisms. I will further discuss the use of in-situ Pulsed Laser Deposition growth combined with atomic resolution Scanning Tunneling Microscopy and Spectroscopy to explore surface structures and electrochemical reactivity of oxides on the atomic scale. For SrRuO3, we directly observe multiple surface reconstructions and link these to the metal-insulator transitions as ascertained by UPS methods. On LaxCa1-xMnO3, we demonstrate strong termination dependence of electronic properties and presence of disordered oxygen ad-atoms. The growth dynamics and surface terminations of these films are discussed, along with single-atom electrochemistry experiments performed by STM. Finally, I explore the opportunities for atomically-resolved imaging and property data mining of functional oxides extending beyond classical order parameter descriptions, and giving rise to the deep data analysis in materials research. 
This research is supported by the by the U.S. Department of Energy, Basic Energy Sciences, Materials Sciences and Engineering Division, and was conducted at the Center for Nanophase Materials Sciences, which is sponsored at Oak Ridge National Laboratory by the Scientific User Facilities Division, BES DOE.

 

Contact: Chan-Ho Yang, Physics Dept., (chyang@kaist.ac.kr)

번호 날짜 장소 제목
80 2024-11-21 16:00  자연동(E6) 1323호  Time-resolved photoemission: From bandstructure to orbital movies / Nanophotonics 초세대 협업 연구실 file
79 2019-09-18 16:00  Seminar Room #1323  Fall 2019: Physics Seminar Serises file
78 2019-09-02 16:00  Seminar Room 1501  Fall 2019: Physics Colloquium file
77 2019-08-22 16:00  #1323, E6-2  Physics and Applications in Nanoelectronics and Nonomechanics file
76 2019-07-16 16:00  Rm. 1323 (E6-2)  2019 Physics Distinguished Lecture file
75 2018-09-07 15:00  학술문화관 (E9), 2층 양승택 오디토리움  Recent developments in density functional theory: From new functionals to the nature of the chemical bond file
74 2018-06-22 10:00  E6-6, Lecture Room 119 (1F)  Success in Research Career file
73 2017-03-21 16:00  Seminar Room 1323  Spring 2017: Physics Seminar Serises file
72 2017-03-06 16:00  Seminar Room 1501  Spring 2017: Physics Colloquium file
71 2017-01-09 16:00  Lecture Hall, College of Natural Sciences [#1501,E6-2]  Topological Defects and Phase Transitions" file
» 2016-01-26 14:00  E6-2, #1323  Electrochemistry on Nano- and Atomic Levels: Scanning Probe Microscopy Meets Deep Data
69 2016-01-11 16:00  E6-2, #1323  Mott Physics in the Strong Spin-Orbit Coupling Regime
68 2016-09-29 16:00  E6-2, #1323  2016 Fall, Physics Seminar Serises file
67 2016-09-05 16:00  Natual Scien Bldg.(E6)m #1501  Physics Colloquium : 2016 Fall file
66 2016-03-11 13:30  E6-2, 1501 외  Physics Seminar Serises : 2016 Spring file
65 2016-03-11 16:00  E6-2. 1st fl. #1501  Jan. Switching handedness of of chiral solitons in Z4 topological insulators
64 2016-03-11 13:30  E6-2. 1st fl. #1501  Topological phases of matter in nonequilibrium: Topology of the Wannier-Stark ladder
63 2016-03-07 16:00  E6, 1501  Physics Colloquium : 2016 Spring file
62 2015-12-17 11:00  E4(KI Building), Matrix Hall (2nd fl.)  Wavefront engineering for in-vivo Deep brain imaging
61 2015-12-11 15:45  E6-2, #1323  Dynamical mean field theory studies on heavy fermion system