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Manipulation and Patterning of the Surface Hydrogen Concentration on Pd(111) by Electric Fields
Author(s) -
Mitsui Toshiyuki,
Fomin Evgeni,
Ogletree D. Frank,
Salmeron Miquel,
Nilekar Anand U.,
Mavrikakis Manos
Publication year - 2007
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200604498
Subject(s) - electric field , hydrogen , scanning tunneling microscope , field (mathematics) , palladium , diffusion , surface (topology) , brush , nanotechnology , computer science , materials science , analytical chemistry (journal) , chemistry , physics , chromatography , mathematics , geometry , organic chemistry , catalysis , thermodynamics , composite material , quantum mechanics , pure mathematics
Paint with a field, not a brush : An electric field created by the tip of a scanning tunneling microscope (see picture, left) is used to control the diffusion of hydrogen on and into a palladium surface, creating distinctive patterns. The resulting STM image (see picture, right) shows a triangular region of reduced hydrogen concentration surrounded by white features due to subsurface hydrogen.