Number of the records: 1

Positron annihilation study of cavities in black Au films

SYSNO ASEP	0476823
Document Type	C - Proceedings Paper (int. conf.)
R&D Document Type	Conference Paper
Title	Positron annihilation study of cavities in black Au films
Author(s)	Melikhova, O. (CZ) Čízek, J. (CZ) Hruška, P. (CZ) Vlček, M. (CZ) Procházka, I. (CZ) Anwand, W. (DE) Novotný, Michal (FZU-D)_{RID, ORCID, SAI} Bulíř, Jiří (FZU-D)_{RID, ORCID, SAI}
Number of authors	8
Article number	012018
Source Title	Journal of Physics: Conference series, 791. - Bristol : IOP Publishing Ltd., 2017 - ISSN 1742-6588
Pages	s. 1-4
Number of pages	4 s.
Publication form	Print - P
Action	International Workshop on Slow Positron Beam Techniques and Applications /14./ (SLOPOS 2016)
Event date	22.05.2016 - 27.05.2016
VEvent location	Kunibiki MesseMatsue
Country	JP - Japan
Event type	WRD
Language	eng - English
Country	GB - United Kingdom
Keywords	black gold ; porous metal ; evaporation ; positron annihilation spectroscopy
Subject RIV	BM - Solid Matter Physics ; Magnetism
OECD category	Condensed matter physics (including formerly solid state physics, supercond.)
R&D Projects	GBP108/12/G043 GA ČR - Czech Science Foundation (CSF)
Institutional support	FZU-D - RVO:68378271
UT WOS	000400610500018
EID SCOPUS	85016078833
DOI	10.1088/1742-6596/791/1/012018
Annotation	Defects in a black Au film were studied using variable energy positron annihilation spectroscopy. Black Au films exhibit porous morphology similar to cauliflower. This type of structure enhances the optical absorption due to a multiple reflections in the micro-cavities. A nanostructured black Au film was compared with conventional smooth Au films with high reflectivity. The black Au film exhibited a remarkably enhanced S-parameter in sub-surface region. This is caused by a narrow para-Positronium contribution to the annihilation peak.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2018

Number of the records: 1