High resolution electron energy loss spectroscopy surface studies of hydrogenated detonation nano-diamond spray-deposited films

Sh Michaelson; A. Stacey; R. Akhvlediani; S. Prawer; A. Hoffman

doi:10.1016/j.susc.2010.04.022

High resolution electron energy loss spectroscopy surface studies of hydrogenated detonation nano-diamond spray-deposited films

Sh Michaelson
, A. Stacey
, R. Akhvlediani
, S. Prawer
, A. Hoffman

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

14 Scopus citations

Abstract

Nano-diamond films composed of 3-5 nm grains prepared by the detonation method and spray deposited onto silicon substrates were examined by high resolution electron energy loss spectroscopy (HR-EELS), Raman spectroscopy and transmission electron microscopy. The HR-EEL spectrum of the annealed and hydrogenated films displays dominant C-H losses at 360-365 meV; the diamond optical phonon and its overtones. These results suggest that the films reveal well defined hydrogenated diamond surfaces on the nanometric scale. Detailed analysis of the diamond optical phonon overtone revealed a red-shift of the basic C-C vibration by 5 meV. We attribute this shift to a phonon quantum confinement effect detected by HR-EELS spectroscopy.

Original language	English (US)
Pages (from-to)	1326-1330
Number of pages	5
Journal	Surface Science
Volume	604
Issue number	15-16
DOIs	https://doi.org/10.1016/j.susc.2010.04.022
State	Published - Aug 15 2010
Externally published	Yes

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

Keywords

Electron scattering
Optical phonon
Overtones
Quantum size effect
Surface vibrations

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10.1016/j.susc.2010.04.022

Cite this

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title = "High resolution electron energy loss spectroscopy surface studies of hydrogenated detonation nano-diamond spray-deposited films",

abstract = "Nano-diamond films composed of 3-5 nm grains prepared by the detonation method and spray deposited onto silicon substrates were examined by high resolution electron energy loss spectroscopy (HR-EELS), Raman spectroscopy and transmission electron microscopy. The HR-EEL spectrum of the annealed and hydrogenated films displays dominant C-H losses at 360-365 meV; the diamond optical phonon and its overtones. These results suggest that the films reveal well defined hydrogenated diamond surfaces on the nanometric scale. Detailed analysis of the diamond optical phonon overtone revealed a red-shift of the basic C-C vibration by 5 meV. We attribute this shift to a phonon quantum confinement effect detected by HR-EELS spectroscopy.",

keywords = "Electron scattering, Optical phonon, Overtones, Quantum size effect, Surface vibrations",

author = "Sh Michaelson and A. Stacey and R. Akhvlediani and S. Prawer and A. Hoffman",

year = "2010",

month = aug,

day = "15",

doi = "10.1016/j.susc.2010.04.022",

language = "English (US)",

volume = "604",

pages = "1326--1330",

journal = "Surface Science",

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number = "15-16",

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TY - JOUR

T1 - High resolution electron energy loss spectroscopy surface studies of hydrogenated detonation nano-diamond spray-deposited films

AU - Michaelson, Sh

AU - Stacey, A.

AU - Akhvlediani, R.

AU - Prawer, S.

AU - Hoffman, A.

PY - 2010/8/15

Y1 - 2010/8/15

N2 - Nano-diamond films composed of 3-5 nm grains prepared by the detonation method and spray deposited onto silicon substrates were examined by high resolution electron energy loss spectroscopy (HR-EELS), Raman spectroscopy and transmission electron microscopy. The HR-EEL spectrum of the annealed and hydrogenated films displays dominant C-H losses at 360-365 meV; the diamond optical phonon and its overtones. These results suggest that the films reveal well defined hydrogenated diamond surfaces on the nanometric scale. Detailed analysis of the diamond optical phonon overtone revealed a red-shift of the basic C-C vibration by 5 meV. We attribute this shift to a phonon quantum confinement effect detected by HR-EELS spectroscopy.

AB - Nano-diamond films composed of 3-5 nm grains prepared by the detonation method and spray deposited onto silicon substrates were examined by high resolution electron energy loss spectroscopy (HR-EELS), Raman spectroscopy and transmission electron microscopy. The HR-EEL spectrum of the annealed and hydrogenated films displays dominant C-H losses at 360-365 meV; the diamond optical phonon and its overtones. These results suggest that the films reveal well defined hydrogenated diamond surfaces on the nanometric scale. Detailed analysis of the diamond optical phonon overtone revealed a red-shift of the basic C-C vibration by 5 meV. We attribute this shift to a phonon quantum confinement effect detected by HR-EELS spectroscopy.

KW - Electron scattering

KW - Optical phonon

KW - Overtones

KW - Quantum size effect

KW - Surface vibrations

UR - https://www.scopus.com/pages/publications/77954244659

UR - https://www.scopus.com/pages/publications/77954244659#tab=citedBy

U2 - 10.1016/j.susc.2010.04.022

DO - 10.1016/j.susc.2010.04.022

M3 - Article

AN - SCOPUS:77954244659

SN - 0039-6028

VL - 604

SP - 1326

EP - 1330

JO - Surface Science

JF - Surface Science

IS - 15-16

ER -

High resolution electron energy loss spectroscopy surface studies of hydrogenated detonation nano-diamond spray-deposited films

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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