TY - JOUR
T1 - Preparation and characterization of ultraflat Pt facets by atom-height-resolved differential optical microscopy
AU - Azhagurajan, M.
AU - Wen, R.
AU - Kim, Y. G.
AU - Itoh, T.
AU - Sashikata, K.
AU - Itaya, K.
N1 - Funding Information:
The authors acknowledge Mr. Y. Saito (Olympus Optical Co. Ltd.) and Prof. G. Sazaki (Hokkaido University) for assistance in the development and optimization of the LCM-DIM system. The authors are grateful to Profs. O. Ito (Tohoku University) and M. P. Soriaga (Texas A&M University) for their help in the writing of this manuscript. This work was supported by the Ministry of Education, Culture, Sports, Science and Technology of Japan under Grant No. 25286011 and in part by the New Energy and Industrial Technology Development Organization (NEDO).
Publisher Copyright:
© 2014 Elsevier B.V. All rights reserved.
PY - 2015/1
Y1 - 2015/1
N2 - We recently demonstrated that improvements to our technique, laser confocal microscopy with differential interference microscopy (LCM-DIM), has rendered it fully capable of resolving monatomic steps with heights of ca. 0.25 nm on Au(111) and Pd(111) surfaces, even as low as 0.14 nm on Si(100), in aqueous solution. In this paper, we describe in detail a method to prepare and characterize, via atomic-layer-resolved LCM-DIM, ultraflat Pt(111) and Pt(100) facets over a wide surface area. The preparation of ultraflat surfaces is important in the characterization at the atomic scale of electrochemical processes under reaction conditions. To showcase the elegance of LCM-DIM, the anodic dissolution of Pt in aqueous HCl is briefly recounted.
AB - We recently demonstrated that improvements to our technique, laser confocal microscopy with differential interference microscopy (LCM-DIM), has rendered it fully capable of resolving monatomic steps with heights of ca. 0.25 nm on Au(111) and Pd(111) surfaces, even as low as 0.14 nm on Si(100), in aqueous solution. In this paper, we describe in detail a method to prepare and characterize, via atomic-layer-resolved LCM-DIM, ultraflat Pt(111) and Pt(100) facets over a wide surface area. The preparation of ultraflat surfaces is important in the characterization at the atomic scale of electrochemical processes under reaction conditions. To showcase the elegance of LCM-DIM, the anodic dissolution of Pt in aqueous HCl is briefly recounted.
KW - Laser confocal microscopy with the differential interference microscopy (LCM-DIM)
KW - Pt single crystal
KW - Ultraflat surfaces
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U2 - 10.1016/j.susc.2014.07.031
DO - 10.1016/j.susc.2014.07.031
M3 - Article
AN - SCOPUS:84912526372
SN - 0039-6028
VL - 631
SP - 57
EP - 62
JO - Surface Science
JF - Surface Science
ER -