Optical interpretation for plasmonic adjustment of nanostructured Ag-NiO thin films

2021 ◽  
Vol 35 (06) ◽  
pp. 2150093
Author(s):  
A. Stamatelatos ◽  
M. Tsarmpopoulou ◽  
A. G. Chronis ◽  
N. Kanistras ◽  
D. I. Anyfantis ◽  
...  
Keyword(s):  
Thin Films ◽  
Theoretical Calculations ◽  
Annealing Treatment ◽  
Silicon Substrates ◽  
Surface Plasmon Resonances ◽  
Corning Glass ◽  
Post Annealing ◽  
Nanocomposite Thin Films ◽  
Plasmon Resonances ◽  
Growth Properties

Ultrathin Ag and Ni/NiO films are sequentially produced on Corning glass and silicon substrates by means of magnetron sputtering. Post annealing treatment in a furnace with air at [Formula: see text]C and [Formula: see text]C may lead to the formation of Ag nanostructures in NiO environment. Some of these samples present local surface plasmon resonances (SPRs). The sequence in which each layer is deposited, as well as, the state of the structure on which the layer is deposited, appears to play a pivotal role in the optical properties of these nanostructures, which are attributed to the growth properties of the nanocomposite thin films. Ultimately, rigorous theoretical calculations have been made for comparison and discussion with the experimental results.

scholarly journals On the Localized Surface Plasmonic Resonances of AgPd Alloy Nanoparticles by Experiment and Theory

Coatings ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 893
Author(s):  
Dimitrios Ntemogiannis ◽  
Maria Tsarmpopoulou ◽  
Alexandros G. Chronis ◽  
Dimitrios I. Anyfantis ◽  
Alexandros Barnasas ◽  
...  
Keyword(s):  
Theoretical Calculations ◽  
Full Range ◽  
Localized Surface Plasmon ◽  
Light Spectrum ◽  
Surface Plasmon Resonances ◽  
Resonance Position ◽  
Localized Surface Plasmon Resonances ◽  
Corning Glass ◽  
Plasmon Resonances ◽  
Physical Insight

Ag/Pd multilayers and AgPd alloyed ultrathin films were deposited on Corning glass by magnetron sputtering. After being annealed in a furnace in air at 460 °C, self-assembled nanoparticles were formed. Localized surface plasmon resonances were observed only for the Ag-rich samples in the full range of the visible light spectrum. The resonance position was found to depend on the initial film thickness. In order to gain further physical insight, rigorous theoretical calculations were carried out via the rigid coupled-wave analysis method for the entire compositional range between Ag and Pd. Theoretical calculations were proven to be in suitable agreement with the experimental results.

Tunable surface plasmon resonances in sputtered titanium nitride thin films

2016 ◽  
Author(s):  
V. Shankernath ◽  
K. Lakshun Naidu ◽  
M. Ghanashyam Krishna ◽  
K. A. Padmanabhan
Keyword(s):  
Thin Films ◽  
Titanium Nitride ◽  
Surface Plasmon ◽  
Surface Plasmon Resonances ◽  
Plasmon Resonances

Thermochromic VO2 Thin Film Prepared by Post Annealing Treatment of V2O5 Thin Film

2009 ◽  
Vol 79-82 ◽  
pp. 747-750 ◽  
Author(s):  
Dong Qing Liu ◽  
Wen Wei Zheng ◽  
Hai Feng Cheng ◽  
Hai Tao Liu
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Phase Transition ◽  
Photoelectron Spectroscopy ◽  
Sol Gel ◽  
Annealing Treatment ◽  
Simple Method ◽  
X Ray ◽  
Post Annealing ◽  
Vo2 Thin Films

Thermochromic vanadium dioxide (VO2) exhibits a semi-conducting to metallic phase transition at about 68°C, involving strong variations in electrical and optical properties. A simple method was proposed to prepare VO2 thin films from easily gained V2O5 thin films. The detailed thermodynamic calculation was done and the results show that V2O5 will decompose to VO2 when the post annealing temperature reaches 550°C at the atmospheric pressure of less than 0.06Pa. The initial V2O5 films were prepared by sol-gel method on fused-quartz substrates. Different post annealing conditions were studied. The derived VO2 thin film samples were characterized using X-ray diffraction and X-ray photoelectron spectroscopy. The electrical resistance and infrared emissivity of VO2 thin films under different temperatures were measured. The results show that the VO2 thin film derived from the V2O5 thin film annealed at 550°C for 10 hours is pure dioxide of vanadium without other valences. It was observed that the resistance of VO2 thin film with thickness about 600nm can change by 4 orders of magnitude and the 7.5-14μm emissivity can change by 0.6 during the phase transition.

scholarly journals Integration of highly anisotropic multiferroic BaTiO3–Fe nanocomposite thin films on Si towards device applications

2020 ◽  
Vol 2 (9) ◽  
pp. 4172-4178
Author(s):  
Matias Kalaswad ◽  
Bruce Zhang ◽  
Xuejing Wang ◽  
Han Wang ◽  
Xingyao Gao ◽  
...  
Keyword(s):  
Thin Films ◽  
Power Consumption ◽  
Low Power ◽  
High Speed ◽  
Low Cost ◽  
Low Power Consumption ◽  
Silicon Substrates ◽  
Critical Step ◽  
Nanocomposite Thin Films ◽  
Device Applications

Integration of highly anisotropic multiferroic thin films on silicon substrates is a critical step towards low-cost devices, especially high-speed and low-power consumption memories.

Fabrication of Poly(diphenylsilylenemethylene) Matrix Nanocomposite Thin Films by Laser Ablation

2008 ◽  
Vol 47-50 ◽  
pp. 558-561
Author(s):  
Ren Guo Song ◽  
Fang Er Yang ◽  
Xiao Hong Weng ◽  
Wang Zhao He
Keyword(s):  
Thin Films ◽  
Laser Ablation ◽  
Size Distribution ◽  
Copper Nanoparticles ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Silicon Substrates ◽  
Air Atmosphere ◽  
Nanocomposite Thin Films ◽  
Matrix Nanocomposite

We have developed a new method to fabricate poly(diphenylsilylenemethylene) (PDPhSM) matrix nanocomposite thin films containing copper nanoparticles produced by laser ablation in this paper. First of all, 1,1,3,3-tetra- phenyl-1,3-disilacyclobutane (TPDC) films were deposited on 4 cm2 silicon substrates cut from c-Si wafers by conventional vacuum evaporation under a pressure of 3.0×10-5 Torr; then copper nanoparticles were deposited onto the TPDC films by laser ablation; finally the TPDC films with copper nanoparticles were heated in an electric furnace in an air atmosphere at 553 K for 10 min to induce ring-opening polymerization of TPDC. The results indicated that it is possible to fabricate PDPhSM matrix nanocomposite thin films using copper nanoparticles produced by laser ablation. The morphology and size distribution of copper nanoparticles can be controlled by laser ablation conditions. Also, the polymerization efficiency depends on the size and chemical state of copper nanoparticles.

Effects of post-annealing treatment on the light emission properties of ZnO thin films on Si

2001 ◽  
Vol 17 (1-2) ◽  
pp. 327-330 ◽  
Author(s):  
Sang Hyuck Bae ◽  
Sang Yeol Lee ◽  
Hyun Young Kim ◽  
Seongil Im
Keyword(s):  
Thin Films ◽  
Light Emission ◽  
Annealing Treatment ◽  
Zno Thin Films ◽  
Emission Properties ◽  
Post Annealing

High quality crystalline MoS2 thin films obtained on Ni coated substrates: optimization of the post-annealing treatment

Vacuum ◽  
1997 ◽  
Vol 48 (6) ◽  
pp. 509-514 ◽  
Author(s):  
E Gourmelon ◽  
H Hadouda ◽  
JC Bernede ◽  
J Pouzet
Keyword(s):  
Thin Films ◽  
Annealing Treatment ◽  
High Quality ◽  
Post Annealing

scholarly journals The effects of bending on plasmonic modes in nanowires and planar structures

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Edson P. Bellido ◽  
Isobel C. Bicket ◽  
Gianluigi A. Botton
Keyword(s):  
Aspect Ratio ◽  
Energy Loss ◽  
Surface Plasmon ◽  
Theoretical Calculations ◽  
Optical Devices ◽  
Surface Plasmon Resonances ◽  
Planar Structures ◽  
Resonant Modes ◽  
Plasmon Resonances ◽  
Electron Energy Loss

Abstract In this work, we investigate the effects of bends on the surface plasmon resonances in nanowires (NWs) and isolated edges of planar structures using electron energy loss spectroscopy experiments and theoretical calculations. Previous work showed that the sharp bends in NWs do not affect their resonant modes. Here, we study previously overlooked effects and analyze systematically the evolution of resonant modes for several bending angles from 30° to 180°, showing that bending can have a significant effect on the plasmonic response of a nanostructure. In NWs, the modes can experience significant energy shifts that depend on the aspect ratio of the NW and can cause mode intersection and antinode bunching. We establish the relation between NW modes and edge modes and show that bending can even induce antinode splitting in edge modes. This work demonstrates that bends in plasmonic planar nanostructures can have a profound effect on their optical response and this must be accounted for in the design of optical devices.

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