Scanning tunneling microscopy measurements of the initial erosion of graphite by hyperthermal atomic oxygen and neon

S. Matlis; R. Vered; G. D. Lempert; G. Marom; Y. Lifshitz

doi:10.1016/0266-3538(93)90147-9

Scanning tunneling microscopy measurements of the initial erosion of graphite by hyperthermal atomic oxygen and neon

S. Matlis
, R. Vered
, G. D. Lempert
, G. Marom
, Y. Lifshitz^*

^*Corresponding author for this work

Institute of Chemistry

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

7 Scopus citations

Abstract

Highly ordered pyrolitic graphite (HOPG) was bombarded by low-energy (∼30eV) O⁺ and Ne⁺ at fluxes in the range of 10¹⁵-10¹⁶ ions cm^-2. The initial erosion of a few monolayers was studied with the aid of scanning tunneling microscopy (STM). Damage consisting of hillocks was observed for both O⁺ and Ne⁺, and the damage density increased with dose. O⁺-bombarded surfaces exhibited partial exfoliation of one to two monoatomic layers (propably as a result of chemical erosion), which was absent for Ne⁺ bombardment. Surface reconstruction of damaged areas was observed. The present work is the first step in an STM study of the effects of atomic oxygen erosion of graphite/epoxy composites in space.

Original language	English
Pages (from-to)	301-305
Number of pages	5
Journal	Composites Science and Technology
Volume	48
Issue number	1-4
DOIs	https://doi.org/10.1016/0266-3538(93)90147-9
State	Published - 1993

Keywords

ATOX
HOPG
LEO
STM
ion bombardment

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10.1016/0266-3538(93)90147-9

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title = "Scanning tunneling microscopy measurements of the initial erosion of graphite by hyperthermal atomic oxygen and neon",

abstract = "Highly ordered pyrolitic graphite (HOPG) was bombarded by low-energy (∼30eV) O+ and Ne+ at fluxes in the range of 1015-1016 ions cm-2. The initial erosion of a few monolayers was studied with the aid of scanning tunneling microscopy (STM). Damage consisting of hillocks was observed for both O+ and Ne+, and the damage density increased with dose. O+-bombarded surfaces exhibited partial exfoliation of one to two monoatomic layers (propably as a result of chemical erosion), which was absent for Ne+ bombardment. Surface reconstruction of damaged areas was observed. The present work is the first step in an STM study of the effects of atomic oxygen erosion of graphite/epoxy composites in space.",

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author = "S. Matlis and R. Vered and Lempert, \{G. D.\} and G. Marom and Y. Lifshitz",

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T1 - Scanning tunneling microscopy measurements of the initial erosion of graphite by hyperthermal atomic oxygen and neon

AU - Matlis, S.

AU - Vered, R.

AU - Lempert, G. D.

AU - Marom, G.

AU - Lifshitz, Y.

PY - 1993

Y1 - 1993

N2 - Highly ordered pyrolitic graphite (HOPG) was bombarded by low-energy (∼30eV) O+ and Ne+ at fluxes in the range of 1015-1016 ions cm-2. The initial erosion of a few monolayers was studied with the aid of scanning tunneling microscopy (STM). Damage consisting of hillocks was observed for both O+ and Ne+, and the damage density increased with dose. O+-bombarded surfaces exhibited partial exfoliation of one to two monoatomic layers (propably as a result of chemical erosion), which was absent for Ne+ bombardment. Surface reconstruction of damaged areas was observed. The present work is the first step in an STM study of the effects of atomic oxygen erosion of graphite/epoxy composites in space.

AB - Highly ordered pyrolitic graphite (HOPG) was bombarded by low-energy (∼30eV) O+ and Ne+ at fluxes in the range of 1015-1016 ions cm-2. The initial erosion of a few monolayers was studied with the aid of scanning tunneling microscopy (STM). Damage consisting of hillocks was observed for both O+ and Ne+, and the damage density increased with dose. O+-bombarded surfaces exhibited partial exfoliation of one to two monoatomic layers (propably as a result of chemical erosion), which was absent for Ne+ bombardment. Surface reconstruction of damaged areas was observed. The present work is the first step in an STM study of the effects of atomic oxygen erosion of graphite/epoxy composites in space.

KW - ATOX

KW - HOPG

KW - LEO

KW - STM

KW - ion bombardment

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JO - Composites Science and Technology

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IS - 1-4

ER -

Scanning tunneling microscopy measurements of the initial erosion of graphite by hyperthermal atomic oxygen and neon

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Keywords

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