Stable and controllable optical memory is necessary for the development of current information technology. In this context, Ag/TiO films have received much attention for their photosensitivity in wavelength and polarization, which can be applied to high-density optical storage. Here, we carried out dual-wavelength holographic recording using 403.4 nm and 532 nm lasers, and obtained mixed microfringes based on selective photodissolution of Ag nanoparticles of various sizes in TiO nanoporous films. Two recording methods of simultaneous and sequential multiplexing were investigated. It was found that using simultaneous irradiation it is easier to obtain equivalent efficiency in both spectral hole burning and multiplexed grating diffraction, compared with the sequential one. The results can be explained by the Time-accumulation effect during Ag ion diffusion and migration in holographic recordings. Based on such properties, multiplexed-holographic fringes with uniform contrast were reserved by simultaneous recording in Ag/TiO films. This work provides a new strategy for fabrication of photonic devices with complex microstructures.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/AO.56.007892 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Critical Issues on the Surface Functionalization of Plasmonic Au-Ag/TiO Thin Films with Thiolated Oligonucleotide-Based Biorecognition Elements.
Biosensors (Basel)
March 2024
Center of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, 4710-057 Braga, Portugal.
This work reports on the surface functionalization of a nanomaterial supporting localized surface plasmon resonances (LSPRs) with (synthetic) thiolated oligonucleotide-based biorecognition elements, envisaging the development of selective LSPR-based DNA biosensors. The LSPR thin-film transducers are composed of noble metal nanoparticles (NPs) embedded in a TiO dielectric matrix, produced cost-effectively and sustainably by magnetron sputtering. The study focused on the immobilization kinetics of thiolated oligonucleotide probes as biorecognition elements, followed by the evaluation of hybridization events with the target probe.
View Article and Find Full Text PDFDesign, preparation, and property analysis of metal/dielectric multilayer film with wavelength selectivity.
J Phys Condens Matter
March 2024
Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Tsinghua University, Beijing 100084, People's Republic of China.
Metal/dielectric multilayer films have important applications in energy-saving glass, stealth materials, solar energy utilization and other fields. In the current study, the thickness of each layer of TiO/Ag/TiO/Ag/TiOfilm is optimized. The effects of the number of metal/dielectric multilayer films and the incident light angle on their optical properties were investigated.
View Article and Find Full Text PDFPhotonic Cooler Based on Multistacked Thin Films with Near-Infrared Filter Properties.
ACS Omega
January 2024
HBKU Core Laboratories, Hamad Bin Khalifa University (HBKU), Qatar Foundation, P.O. Box 34110, Doha, Qatar.
Article Synopsis
- The study focuses on creating a multistacked photonic cooler for hot and dry climates, utilizing a layered structure with TiO, NiO, and Ag for optimal infrared filtration and light transmittance.
- The fabrication process involved in situ deposition under vacuum, where the wettability of the TiO layer can be adjusted through oxygen flow, potentially enhancing its self-cleaning abilities.
- Various layer configurations were tested, and simulations suggest these coatings could efficiently improve silicon solar cells, highlighting their promise for commercial applications through their multifunctional traits.
Tuning the Refractive Index Sensitivity of LSPR Transducers Based on Nanocomposite Thin Films Composed of Noble Metal Nanoparticles Dispersed in TiO.
Materials (Basel)
November 2023
Physics Center of Minho and Porto Universities (CF-UM-UP), University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal.
This work reports on the development of nanoplasmonic thin films consisting of Au, Ag, or Au-Ag nanoparticles dispersed in a TiO matrix and the optimization of the deposition parameters to tune their optical response. The thin films were produced by reactive DC magnetron sputtering of a Ti target with Au and/or Ag pellets placed on the erosion zone. The thicknesses (50 and 100 nm) of the films, the current density (75 and 100 A/m) applied to the target (titanium), and the number of pellets placed on its surface were the deposition conditions that were used to tailor the optical (LSPR) response.
View Article and Find Full Text PDFAntibacterial and Osteogenic Properties of Ag Nanoparticles and Ag/TiO Nanostructures Prepared by Atomic Layer Deposition.
J Funct Biomater
May 2022
Peter the Great Saint Petersburg Polytechnic University, Polytechnicheskaya, 29, 195221 Saint Petersburg, Russia.
The combination of titania nanofilms and silver nanoparticles (NPs) is a very promising material, with antibacterial and osseointegration-induced properties for titanium implant coatings. In this work, we successfully prepared TiO nanolayer/Ag NP structures on titanium disks using atomic layer deposition (ALD). The samples were studied by scanning electron microscopy (SEM), X-ray diffraction, X-ray photoelectron spectroscopy (XPS), contact angle measurements, and SEM-EDS.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!