Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/28780
Title: Thermal tuning of surface plasmon resonance : Ag gratings on barium strontium titanate thin films
Authors: Xin, JZ
Hui, KC
Wang, K
Chan, HLW 
Ong, DHC
Leung, CW 
Issue Date: 2012
Publisher: Springer
Source: Applied physics. A, Materials science & processing, 2012, v. 107, no. 1, p. 101-107 How to cite?
Journal: Applied physics. A, Materials science & processing 
Abstract: Surface plasmon tuning via thermally induced refractive index changes in ferroelectrics is investigated. Epitaxial (Ba 0.7Sr 0.3)TiO 3 (BST) thin films were deposited on MgO (001) substrates by pulsed laser deposition. The refractive index of BST thin films measured by the prism-coupling technique was found to increase from 2.3932 (TE)/1.9945 (TM) at room temperature to 2.3949 (TE)/1.9965 (TM) at 66°C. Then 30-nm-Ag gratings with periodicity 750 nm and width 300 nm were fabricated on BST by soft ultraviolet nanoimprint lithography and subsequent lift-off process. The reflection spectra from 500 to 1000 nm with incident angle from 5° to 60° were measured at room temperature and 66°C, with a collimated and p-polarized light incident perpendicularly to the grating direction. Several modes were observed from the spectra. At 66°C, a red shift of a dip at about 850 nm by 2 nm was obtained at an incident angle of 15°. Calculations confirmed that the observed modes belong to the (-1), (2), (-2) and (3) surface plasmon modes from the Ag and BST interfaces and localized mode; the red shift by thermal tuning is also confirmed. The results indicate the feasibility of active modulation in surface plasmon resonance in solid-state structures.
URI: http://hdl.handle.net/10397/28780
ISSN: 0947-8396
EISSN: 1432-0630
DOI: 10.1007/s00339-011-6742-0
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

3
Last Week
0
Last month
0
Citations as of Aug 17, 2017

WEB OF SCIENCETM
Citations

2
Last Week
0
Last month
0
Citations as of Aug 21, 2017

Page view(s)

36
Last Week
2
Last month
Checked on Aug 20, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.