Single-particle plasmon resonance spectroscopy of phase transition in vanadium dioxide

2010 ◽  
Vol 35 (23) ◽  
pp. 3988 ◽  
Author(s):  
Dang Yuan Lei ◽  
Kannatassen Appavoo ◽  
Yannick Sonnefraud ◽  
Richard F. Haglund, Jr. ◽  
Stefan A. Maier
Keyword(s):  
Phase Transition ◽  
Plasmon Resonance ◽  
Single Particle ◽  
Vanadium Dioxide ◽  
Resonance Spectroscopy ◽  
Particle Plasmon

Modulation of the gold particle–plasmon resonance by the metal–semiconductor transition of vanadium dioxide

2008 ◽  
Vol 10 (5) ◽  
pp. 055202 ◽  
Author(s):  
J Y Suh ◽  
E U Donev ◽  
D W Ferrara ◽  
K A Tetz ◽  
L C Feldman ◽  
...  
Keyword(s):  
Gold Particle ◽  
Plasmon Resonance ◽  
Vanadium Dioxide ◽  
Particle Plasmon

Role of Defects in the Phase Transition of VO2Nanoparticles Probed by Plasmon Resonance Spectroscopy

Nano Letters ◽  
2012 ◽  
Vol 12 (2) ◽  
pp. 780-786 ◽  
Author(s):  
Kannatassen Appavoo ◽  
Dang Yuan Lei ◽  
Yannick Sonnefraud ◽  
Bin Wang ◽  
Sokrates T. Pantelides ◽  
...  
Keyword(s):  
Phase Transition ◽  
Plasmon Resonance ◽  
Resonance Spectroscopy

A single particle plasmon resonance study of 3D conical nanoantennas

Nanoscale ◽  
2013 ◽  
Vol 5 (17) ◽  
pp. 7861 ◽  
Author(s):  
Christian Schäfer ◽  
Dominik A. Gollmer ◽  
Andreas Horrer ◽  
Julia Fulmes ◽  
Alexander Weber-Bargioni ◽  
...  
Keyword(s):  
Plasmon Resonance ◽  
Single Particle ◽  
Particle Plasmon

Optical Switching of Coherent VO2 Precipitates Embedded in Sapphire

1995 ◽  
Vol 396 ◽  
Author(s):  
L. A. Gea ◽  
L. A. Boatner ◽  
J. D. Budai ◽  
R. A. Zuhr
Keyword(s):  
Phase Transition ◽  
Vanadium Dioxide ◽  
Thermal Processing ◽  
Optical Switching ◽  
Optical Transmission ◽  
Structural Phase ◽  
Switching Behavior ◽  
New Type ◽  
Single Crystal Sapphire ◽  
Smart Surface

AbstractIn this work, we report the formation of a new type of active or “smart” surface that is produced by ion implantation and thermal processing. By co-implanting vanadium and oxygen into a single-crystal sapphire substrate and annealing the system under appropriate conditions, it was possible to form buried precipitates of vanadium dioxide that were crystallographically oriented with respect to the host AI2O3 lattice. The implanted VO2 precipitate system undergoes a structural phase transition that is accompanied by large variations in the optical transmission which are comparable to those observed for thin films of VO2 deposited on sapphire. Co-implantation with oxygen was found to be necessary to ensure good optical switching behavior.

scholarly journals Optical Characterization of Ultra-Thin Films of Azo-Dye-Doped Polymers Using Ellipsometry and Surface Plasmon Resonance Spectroscopy

Photonics ◽  
2021 ◽  
Vol 8 (2) ◽  
pp. 41
Author(s):  
Najat Andam ◽  
Siham Refki ◽  
Hidekazu Ishitobi ◽  
Yasushi Inouye ◽  
Zouheir Sekkat
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Spectroscopic Ellipsometry ◽  
Plasmon Resonance ◽  
Complex Refractive Index ◽  
Resonance Spectroscopy ◽  
Doped Polymers

The determination of optical constants (i.e., real and imaginary parts of the complex refractive index (nc) and thickness (d)) of ultrathin films is often required in photonics. It may be done by using, for example, surface plasmon resonance (SPR) spectroscopy combined with either profilometry or atomic force microscopy (AFM). SPR yields the optical thickness (i.e., the product of nc and d) of the film, while profilometry and AFM yield its thickness, thereby allowing for the separate determination of nc and d. In this paper, we use SPR and profilometry to determine the complex refractive index of very thin (i.e., 58 nm) films of dye-doped polymers at different dye/polymer concentrations (a feature which constitutes the originality of this work), and we compare the SPR results with those obtained by using spectroscopic ellipsometry measurements performed on the same samples. To determine the optical properties of our film samples by ellipsometry, we used, for the theoretical fits to experimental data, Bruggeman’s effective medium model for the dye/polymer, assumed as a composite material, and the Lorentz model for dye absorption. We found an excellent agreement between the results obtained by SPR and ellipsometry, confirming that SPR is appropriate for measuring the optical properties of very thin coatings at a single light frequency, given that it is simpler in operation and data analysis than spectroscopic ellipsometry.

scholarly journals Phase management in single-crystalline vanadium dioxide beams

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Run Shi ◽  
Yong Chen ◽  
Xiangbin Cai ◽  
Qing Lian ◽  
Zhuoqiong Zhang ◽  
...  
Keyword(s):  
Phase Transition ◽  
Vanadium Dioxide ◽  
Temperature Phase ◽  
Metal Insulator ◽  
Single Crystalline ◽  
Submicron Scale ◽  
Engineering Strategy ◽  
Improved Performance ◽  
Effective Phase ◽  
Two Sides

AbstractA systematic study of various metal-insulator transition (MIT) associated phases of VO2, including metallic R phase and insulating phases (T, M1, M2), is required to uncover the physics of MIT and trigger their promising applications. Here, through an oxide inhibitor-assisted stoichiometry engineering, we show that all the insulating phases can be selectively stabilized in single-crystalline VO2 beams at room temperature. The stoichiometry engineering strategy also provides precise spatial control of the phase configurations in as-grown VO2 beams at the submicron-scale, introducing a fresh concept of phase transition route devices. For instance, the combination of different phase transition routes at the two sides of VO2 beams gives birth to a family of single-crystalline VO2 actuators with highly improved performance and functional diversity. This work provides a substantial understanding of the stoichiometry-temperature phase diagram and a stoichiometry engineering strategy for the effective phase management of VO2.

Sign in / Sign up

Export Citation Format

Share Document