Modification of tantalum surfaces by scanning tunneling microscopy in an electrochemical cell

T. Thundat; L. A. Nagahara; P. I. Oden; S. M. Lindsay

doi:10.1116/1.576503

Modification of tantalum surfaces by scanning tunneling microscopy in an electrochemical cell

T. Thundat
, L. A. Nagahara
, P. I. Oden
, S. M. Lindsay

Department of Chemical and Biological Engineering

Arizona State University

Research output: Contribution to journal › Article › peer-review

34 Scopus citations

Abstract

The morphological evolution of tantalum surfaces induced by scanning in an electrochemical cell have been investigated by scanning tunneling microscopy (STM). Repeated scanning over the same region was found to create a surface with a reduced peak-to-peak corrugation. This phenomenon was observed for negative tip biases only, and was also found to occur at a slower rate while scanning in air. X-ray photoelectron spectroscopy shows layers of Ta₂O₅deposited anodically on samples imaged with STM.

Original language	English
Pages (from-to)	3537-3541
Number of pages	5
Journal	Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Volume	8
Issue number	4
DOIs	https://doi.org/10.1116/1.576503
State	Published - Jul 1990

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abstract = "The morphological evolution of tantalum surfaces induced by scanning in an electrochemical cell have been investigated by scanning tunneling microscopy (STM). Repeated scanning over the same region was found to create a surface with a reduced peak-to-peak corrugation. This phenomenon was observed for negative tip biases only, and was also found to occur at a slower rate while scanning in air. X-ray photoelectron spectroscopy shows layers of Ta2O5deposited anodically on samples imaged with STM.",

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AU - Nagahara, L. A.

AU - Oden, P. I.

AU - Lindsay, S. M.

PY - 1990/7

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N2 - The morphological evolution of tantalum surfaces induced by scanning in an electrochemical cell have been investigated by scanning tunneling microscopy (STM). Repeated scanning over the same region was found to create a surface with a reduced peak-to-peak corrugation. This phenomenon was observed for negative tip biases only, and was also found to occur at a slower rate while scanning in air. X-ray photoelectron spectroscopy shows layers of Ta2O5deposited anodically on samples imaged with STM.

AB - The morphological evolution of tantalum surfaces induced by scanning in an electrochemical cell have been investigated by scanning tunneling microscopy (STM). Repeated scanning over the same region was found to create a surface with a reduced peak-to-peak corrugation. This phenomenon was observed for negative tip biases only, and was also found to occur at a slower rate while scanning in air. X-ray photoelectron spectroscopy shows layers of Ta2O5deposited anodically on samples imaged with STM.

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SN - 0734-2101

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Modification of tantalum surfaces by scanning tunneling microscopy in an electrochemical cell

Abstract

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