scholarly journals New Strategy for Creating TiO2 Thin Films with Embedded Au Nanoparticles

Coatings ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1525
Author(s):  
Sofia Rubtsov ◽  
Albina Musin ◽  
Michael Zinigrad ◽  
Alexander Kalashnikov ◽  
Viktor Danchuk
Keyword(s):  
Thin Films ◽  
Gold Nanoparticles ◽  
Ethylene Glycol ◽  
Inkjet Printing ◽  
Au Nanoparticles ◽  
Localized Surface Plasmon ◽  
Tio2 Thin Films ◽  
Solar Cell Application ◽  
New Strategy ◽  
Printing Ink

This paper proposes a new strategy for producing thin films of TiO2 with embedded gold nanoparticles (TiO2/AuNP). One of the main tasks was the synthesis of a stable dispersion of TiO2 and gold nanoparticles in an aqueous solution of ethylene glycol, suitable for inkjet printing—ink with complex gold nanoparticles (AuCNP ink). The AuCNP were synthesized by a reduction from tetrachloroauric acid in the presence of TiO2 nanoparticles and ethylene glycol (EG). The final formation of TiO2/AuNP films occurred during the annealing of AuCNP layers, inkjet printed on a glass substrate. The TiO2/AuNP films demonstrate absorbance in the yellow-green range due to the localized surface plasmon resonance (LSPR) and are promising for solar cell application.

scholarly journals Preparation of Plasmonic Au-TiO2 Thin Films on a Transparent Polymer Substrate

Coatings ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 227
Author(s):  
Marco S. Rodrigues ◽  
Diana I. Meira ◽  
Cláudia Lopes ◽  
Joel Borges ◽  
Filipe Vaz
Keyword(s):  
Thin Films ◽  
Heat Treatment ◽  
Au Nanoparticles ◽  
Base Material ◽  
Polymer Substrate ◽  
Localized Surface Plasmon ◽  
Microfluidic Channels ◽  
Tio2 Thin Films ◽  
Refractive Index Sensitivity ◽  
Tio2 Matrix

In this work, plasmonic thin films composed of Au nanoparticles embedded in a TiO2 matrix were prepared in a transparent polymer substrate of poly(dimethylsiloxane) (PDMS). The thin films were deposited by reactive DC magnetron sputtering, and then subjected to heat treatment up to 150 °C in order to promote the growth of the Au nanoparticles throughout the TiO2 matrix. The transmittance spectrum of the thin films was monitored in situ during the heat treatment, and the minimum time required to have a defined localized surface plasmon resonance (LSPR) band was about 10 min. The average size of Au nanoparticles was estimated to be about 21 nm—the majority of them are sized in the range 10–40 nm, but also extend to larger sizes, with irregular shapes. The refractive index sensitivity of the films was estimated by using two test fluids (H2O and DMSO), and the average value reached in the assays was 37.3 ± 1.5 nm/RIU, resulting from an average shift of 5.4 ± 0.2 nm. The results show that it is possible to produce sensitive plasmonic Au-TiO2 thin films in transparent polymer substrates such as PDMS, the base material to develop microfluidic channels to be incorporated in LSPR sensing systems.

Growth and size distribution of Au nanoparticles in annealed Au/TiO2 thin films

2014 ◽  
Vol 553 ◽  
pp. 138-143 ◽  
Author(s):  
S. Reymond-Laruinaz ◽  
L. Saviot ◽  
V. Potin ◽  
C. Lopes ◽  
F. Vaz ◽  
...  
Keyword(s):  
Thin Films ◽  
Size Distribution ◽  
Au Nanoparticles ◽  
Tio2 Thin Films

Femtosecond studies of coherent acoustic phonons in gold nanoparticles embedded in TiO2 thin films

2000 ◽  
Vol 87 (1) ◽  
pp. 612-614 ◽  
Author(s):  
W. Qian ◽  
L. Lin ◽  
Y. J. Deng ◽  
Z. J. Xia ◽  
Y. H. Zou ◽  
...  
Keyword(s):  
Thin Films ◽  
Gold Nanoparticles ◽  
Acoustic Phonons ◽  
Tio2 Thin Films ◽  
Coherent Acoustic Phonons

scholarly journals Au Nanoparticles–Mesoporous TiO2 Thin Films Composites as SERS Sensors: A Systematic Performance Analysis

2018 ◽  
Vol 122 (24) ◽  
pp. 13095-13105 ◽  
Author(s):  
M. Mercedes Zalduendo ◽  
Judith Langer ◽  
Juan J. Giner-Casares ◽  
Emilia B. Halac ◽  
Galo J. A. A. Soler-Illia ◽  
...  
Keyword(s):  
Thin Films ◽  
Performance Analysis ◽  
Au Nanoparticles ◽  
Mesoporous Tio2 ◽  
Tio2 Thin Films

scholarly journals Growth of Plasmonic Au Nanoparticles on TiO2 Thin Films Prepared by Laser Ablation for Visible-light Water Splitting

2019 ◽  
Vol 25 (S2) ◽  
pp. 2248-2249
Author(s):  
Mariana Klementová ◽  
Adriana Lančok ◽  
Radek Fajgar ◽  
Martin Koštejn ◽  
Snejana Bakardijeva
Keyword(s):  
Thin Films ◽  
Laser Ablation ◽  
Visible Light ◽  
Water Splitting ◽  
Au Nanoparticles ◽  
Tio2 Thin Films ◽  
Light Water
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