Publications
441 results found
Lei DY, Kéna-Cohen S, Zou B, et al., 2012, Spectroscopic ellipsometry as an optical probe of strain evolution in ferroelectric thin films, Opt. Express, Vol: 20, Pages: 4419-4427
Heteroepitaxial strain in ferroelectric thin films is known to have a significant impact on both their low and high frequency dielectric properties. In this paper, we use ex-situ spectroscopic ellipsometry to study the strain evolution with film thickness, and strain relaxation in ferroelectric Ba0.5Sr0.5TiO3 epitaxial films grown on single crystal substrates. For films grown on MgO substrates, a critical thickness for strain relaxation is observed. In addition, studies of Ba0.5Sr0.5TiO3 films grown on different single crystal substrates reveal that the strain relaxation rate can be inferred from changes in the optical properties. Using this information, we show that the optical constants of Ba0.5Sr0.5TiO3 can be readily tuned via strain engineering.
Pang JS, Xie F, Centeno A, et al., 2012, Optical absorption of metal nanoparticle arrays
A study into the enhanced optical absorption due to metal nanoparticle arrays fabricated by nanosphere lithography. Prediction and measurement has been undertaken. Implementation to improve the efficiency of PV solar cells is discussed. © 2012 OSA.
Axelsson A-K, Aguesse F, Alford NM, et al., 2012, Role of Interfaces in Nanostructured CoFe<sub>2</sub>O<sub>4</sub> films, 21st IEEE ISAF, held Jointly with 11th ECAPD and 4th Conference on PFM and Nanoscale Phenomena in Polar Materials, Publisher: IEEE, ISSN: 1099-4734
Centeno A, Xie F, Alford N, 2012, A Computational Study of the Coupled Emissions between Flurophores and Gold Triangular Prism Bow Tie, Progress in Electromagnetics Research Symposium, Publisher: ELECTROMAGNETICS ACAD, Pages: 765-767, ISSN: 1559-9450
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- Citations: 2
Kozyrev AB, Mikhaylov AK, Ptashnik SV, et al., 2011, Electronically switchable bulk acoustic wave resonator based on paraelectric state ferroelectric films, ELECTRONICS LETTERS, Vol: 47, Pages: 1326-1327, ISSN: 0013-5194
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- Citations: 8
Dunne LJ, Valant M, Axelsson A-K, et al., 2011, Statistical mechanical lattice model of the dual-peak electrocaloric effect in ferroelectric relaxors and the role of pressure, JOURNAL OF PHYSICS D-APPLIED PHYSICS, Vol: 44, ISSN: 0022-3727
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- Citations: 38
Breeze J, Oxborrow M, Alford NM, 2011, Better than Bragg: Optimizing the quality factor of resonators with aperiodic dielectric reflectors, APPLIED PHYSICS LETTERS, Vol: 99, ISSN: 0003-6951
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- Citations: 4
ALFORD NMCN, 2011, Preservation of cooking oil involves contacting the oil in situ with at least one oil-permeable cement body, which has been hydraulically hardened from paste comprising cement clinker and cement, WO2009019512-A1 ; EP2187755-A1 ; IN201001384-P1 ; JP2010535470-W ; CN101932251-A
Wang YQ, Liang WS, Petrov PK, et al., 2011, Dissociation of misfit and threading dislocations in Ba<sub>0.75</sub>Sr<sub>0.25</sub>TiO<sub>3</sub> epitaxial film, MATERIALS CHARACTERIZATION, Vol: 62, Pages: 294-297, ISSN: 1044-5803
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- Citations: 9
Wang YQ, Liang WS, Petrov PK, et al., 2011, Antiphase boundaries in Ba<sub>0.75</sub>Sr<sub>0.25</sub>TiO<sub>3</sub> epitaxial film grown on (001) LaAlO<sub>3</sub> substrate, APPLIED PHYSICS LETTERS, Vol: 98, ISSN: 0003-6951
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- Citations: 10
Centeno A, Xie F, Alford N, 2011, Light absorption and field enhancement in two-dimensional arrays of closely spaced silver nanoparticles, JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, Vol: 28, Pages: 325-330, ISSN: 0740-3224
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- Citations: 18
Centeno A, Alford N, 2011, Measurement of ZigBee wireless communications in mode-stirred and mode-tuned reverberation chamber, Progress In Electromagnetics Research M, Vol: 18, Pages: 171-178, ISSN: 1937-8726
It is highly desirable to use advanced sensor networks to continuously monitor the structural health of an aircraft. It would be advantageous if the network was wireless to avoid the need for additional wire bundles and associated interconnects but the reliability of a suitable wireless channel in low loss enclosed structures needs to be understood. This paper reports on work undertaken testing the 2.4 GHz ZigBee wireless protocol in a mode stirred and mode tuned reverberation chamber. The results show that even for very low loss enclosures wireless communications is possible but only under very specific conditions. A higher loss chamber has more reliable communication channels, but even with loading there are large variations in packet error rates even between adjacent ZigBee channels.
Axelsson A-K, Aguesse F, Spillane L, et al., 2011, Quantitative strain analysis and growth mode of pulsed laser deposited epitaxial CoFe<sub>2</sub>O<sub>4</sub> thin films, ACTA MATERIALIA, Vol: 59, Pages: 514-520, ISSN: 1359-6454
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- Citations: 20
Basey-Fisher TH, Hanham SM, Andresen H, et al., 2011, Microwave Debye relaxation analysis of dissolved proteins: Towards free-solution biosensing, Applied Physics Letters, Vol: 99, Pages: 233703-233703
Centeno A, Xie F, Breeze J, et al., 2011, Calculations of scattering and absorption efficiencies of nobel metal nanoparticles, Applied Electromagnetics Conference (AEMC), 2011 IEEE, Pages: 1-4
Centeno A, Xie F, Breeze JD, et al., 2011, Electromagnetic Design of Solar Collectors, Pages: 376-379, ISSN: 1931-7360
Shimada T, Ichikawa K, Minemura T, et al., 2010, Intrinsic Microwave Dielectric Loss of Lanthanum Aluminate, IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, Vol: 57, Pages: 2243-2249, ISSN: 0885-3010
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- Citations: 6
Axelsson A-K, Pan Y, Valant M, et al., 2010, Polar fluctuations in Mn substituted KTaO<sub>3</sub> ceramics, JOURNAL OF APPLIED PHYSICS, Vol: 108, ISSN: 0021-8979
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- Citations: 8
Valant M, Dunne LJ, Axelsson A-K, et al., 2010, Electrocaloric effect in a ferroelectric Pb(Zn<sub>1/3</sub>Nb<sub>2/3</sub>)O<sub>3</sub>-PbTiO<sub>3</sub> single crystal, PHYSICAL REVIEW B, Vol: 81, ISSN: 1098-0121
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- Citations: 76
Petrov PK, Alford NM, Kozyrev A, et al., 2010, Effect of ultraviolet radiation on slow-relaxation processes in ferroelectric capacitance structures, JOURNAL OF APPLIED PHYSICS, Vol: 107, ISSN: 0021-8979
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- Citations: 11
Cheong H-S, Wild J, Alford N, et al., 2010, A High Temperature Superconducting Imaging Coil for Low-Field MRI, CONCEPTS IN MAGNETIC RESONANCE PART B-MAGNETIC RESONANCE ENGINEERING, Vol: 37B, Pages: 56-64, ISSN: 1552-5031
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- Citations: 8
Valant M, Kolodiazhnyi T, Axelsson A-K, et al., 2010, Spin Ordering in Mn-Doped KTaO<sub>3</sub>?, CHEMISTRY OF MATERIALS, Vol: 22, Pages: 1952-1954, ISSN: 0897-4756
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- Citations: 19
Axelsson A-K, Valant M, Alford NM, 2010, Influence of point defects in KTaO<sub>3</sub> on low-temperature dielectric relaxation, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, Vol: 30, Pages: 941-946, ISSN: 0955-2219
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- Citations: 7
Axelsson A-K, Pan Y, Valant M, et al., 2010, Chemistry, Processing, and Microwave Dielectric Properties of Mn-Substituted KTaO<sub>3</sub> Ceramics, JOURNAL OF THE AMERICAN CERAMIC SOCIETY, Vol: 93, Pages: 800-805, ISSN: 0002-7820
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- Citations: 9
Valant M, Axelsson A-K, Aguesse F, et al., 2010, Molecular Auxetic Behavior of Epitaxial Co-Ferrite Spinel Thin Film, ADVANCED FUNCTIONAL MATERIALS, Vol: 20, Pages: 644-647, ISSN: 1616-301X
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- Citations: 34
Schmidgall E, Walters RA, Centeno A, et al., 2010, Temperature stable Ba<sub>x</sub>Sr<sub>1-x</sub>TiO<sub>3</sub> thin film structures for microwave devices, ELECTRONICS LETTERS, Vol: 46, Pages: 277-U27, ISSN: 0013-5194
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- Citations: 1
Centeno A, Breeze J, Ahmed B, et al., 2010, Scattering of light into silicon by spherical and hemispherical silver nanoparticles, OPTICS LETTERS, Vol: 35, Pages: 76-78, ISSN: 0146-9592
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- Citations: 41
Shimada T, Ichikawa K, Minemura T, et al., 2010, Temperature and frequency dependence of dielectric loss of Ba(Mg<sub>1/3</sub>Ta<sub>2/3</sub>)O<sub>3</sub> microwave ceramics, 11th Electroceramics Conference 2008, Publisher: ELSEVIER SCI LTD, Pages: 331-334, ISSN: 0955-2219
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- Citations: 13
Karpinsky DV, Selezneva EK, Bdikin IK, et al., 2010, Development of Novel Multiferroic Composites Based on BaTiO<sub>3</sub> and Hexagonal Ferrites, Symposium on Novel Materials and Devices for Spintronics, Publisher: MATERIALS RESEARCH SOC, Pages: 115-+, ISSN: 0272-9172
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- Citations: 1
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