Positron beam study of sot-gel prepared ordered mesoporous silica thin films

被引：0

作者：

Yu, R. S. ^{[1
]}

Qin, X. B. ^{[1
]}

Zhang, P. ^{[1
]}

Wang, B. Y. ^{[1
]}

Wei, L. ^{[1
]}

机构：

[1] Chinese Acad Sci, Key Lab Nucl Anal Tech, Inst High Energy Phys, Beijing 100049, Peoples R China

来源：

12TH INTERNATIONAL WORKSHOP ON SLOW POSITRON BEAM TECHNIQUES (SLOPOS12) | 2011年 / 262卷

关键词：

ANNIHILATION;

D O I：

10.1088/1742-6596/262/1/012068

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Several so-gel prepared silica thin films with ordered meso-pores were studied with a variable energy positron beam. Doppler broadening measurements show that in CTAB-templated samples, film porosity is the superior factor upon pore size and affects the final S parameter. While for P123 and F127-templated films with similar porosity, as hexagonal pores extend along the direction parallel to film surface, a larger effective pore size could be sensed by positrons, which enhances open volume ratio favourable for Ps formation.

引用

页数：4

共 6 条

[1] Positron beam analysis of structurally ordered porosity in mesoporous silica thin films
van Veen, A
Galindo, RE
Schut, H
Eijt, SWH
Falub, CV
Balkenende, AR
de Theije, FK
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2003, 102 (1-3): : 2 - 7
[2] Systematic positron study of hydrophilicity of the internal pore surface in ordered low-k silica thin films
Galindo, RE
van Veen, A
Schut, H
Eijt, SWH
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Balkenende, AR
de Theije, FK
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2003, 102 (1-3): : 403 - 408
[3] Role of pore morphology in positronium diffusion in mesoporous silica thin films and in positronium emission from the surfaces
He, Chunqing
Wang, Shaojie
Kobayashi, Yoshinori
Ohdaira, Toshiyuki
Suzuki, Ryoichi
PHYSICAL REVIEW B, 2012, 86 (07)
[4] Detection and imaging of the oxygen deficiency in single crystalline YBa2Cu3O7-δ thin films using a scanning positron beam
Reiner, M.
Gigl, T.
Jany, R.
Hammerl, G.
Hugenschmidt, C.
APPLIED PHYSICS LETTERS, 2015, 106 (11)
[5] Study on UV-laser fatigue damage of sol-gel antireflective coating using XPS and slow positron beam Doppler broadening spectrum
You, Teng-Hui
Yang, Wei
Wang, Tian-Yu
Hui, Hao-Hao
Lei, Xiang-Yang
Zhang, Qing-Hua
Cao, XingZhong
Yu, RunSheng
Ju, Xin
Deng, Xue-Ran
VACUUM, 2023, 212
[6] Study of ultra-thin Al films deposited on GaAs(100) using positron annihilation induced auger electron spectroscopy and electron induced Auger electron spectroscopy
Chen, WC
Fazleev, NG
Weiss, AH
RADIATION PHYSICS AND CHEMISTRY, 2003, 68 (3-4) : 619 - 621

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