Facile and fast photosensing of polarity by stimuli-responsive materials based on spiropyran for reusable sensors: a physico-chemical study on the interactions

2017 ◽  
Vol 5 (26) ◽  
pp. 6588-6600 ◽  
Author(s):  
Amin Abdollahi ◽  
Zeinab Alinejad ◽  
Ali Reza Mahdavian
Keyword(s):  
Data Storage ◽  
Chemical Sensors ◽  
Optical Switching ◽  
Chemical Study ◽  
Optical Data Storage ◽  
Optical Data ◽  
Stimuli Responsive ◽  
Responsive Materials ◽  
Storage Devices ◽  
Physico Chemical

Stimuli-responsive materials based on spiropyran, which show reversible solvatochromism and photochromism under UV irradiation, could be used for advanced devices such as chemical sensors, optical data storage devices, and optical switching displays.

scholarly journals Optical Isomerization and Photo-Patternable Properties of GeO2/Ormosils Organic-Inorganic Composite Films Doped with Azobenzene

Coatings ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 818
Author(s):  
Xuehua Zhang ◽  
Qian Wang ◽  
Shun Liu ◽  
Wei Zhang ◽  
Fangren Hu ◽  
...  
Keyword(s):  
Optical Waveguide ◽  
Data Storage ◽  
Optical Switching ◽  
Sol Gel ◽  
Composite Films ◽  
Optical Data Storage ◽  
Optical Data ◽  
Single Chip ◽  
Coating Method ◽  
Inorganic Composite

GeO2/organically modified silane (ormosils) organic-inorganic composite films containing azobenzene were prepared by combining sol-gel technology and spin coating method. Optical waveguide properties including the refractive index and thickness of the composite films were characterized by using a prism coupling instrument. Surface morphology and photochemical properties of the composite films were investigated by atomic force microscope and Fourier transform infrared spectrometer. Results indicate that the composite films have smooth and neat surface, and excellent optical waveguide performance. Photo-isomerization properties of the composite films were studied by using a UV–Vis spectrophotometer. Optical switching performance of the composite films was also studied under the alternating exposure of 365 nm ultraviolet light and 410 nm visible light. Finally, strip waveguides and microlens arrays were built in the composite films through a UV soft imprint technique. Based on the above results, we believe that the prepared composite films are promising candidates for micro-nano optics and photonic applications, which would allow directly integrating the optical data storage and optical switching devices onto a single chip.

Stimuli-responsive fluorophores with aggregation-induced emission: implication for dual-channel optical data storage

2016 ◽  
Vol 4 (23) ◽  
pp. 5334-5341 ◽  
Author(s):  
Liangyu Hu ◽  
Yuai Duan ◽  
Zhenzhen Xu ◽  
Jing Yuan ◽  
Yuping Dong ◽  
...  
Keyword(s):  
Data Storage ◽  
Optical Data Storage ◽  
Optical Data ◽  
Stimuli Responsive ◽  
Aggregation Induced Emission ◽  
Dual Channel

Dual-channel optical data storage can be either read-only or rewritable based on the stimuli-responsive AIE fluorophores.

Multi-stimuli-responsive poly(NIPA-co-HEMA-co-NVP) with spironaphthoxazine hydrogel for optical data storage application

2016 ◽  
Vol 294 (10) ◽  
pp. 1623-1632 ◽  
Author(s):  
Xiaoli Yang ◽  
Lihua Zhou ◽  
Le Lv ◽  
Xin Zhao ◽  
Lingyun Hao
Keyword(s):  
Data Storage ◽  
Optical Data Storage ◽  
Optical Data ◽  
Stimuli Responsive

Spatial control of organic nanocrystal nucleation in sol–gel thin films for 3-D optical data storage devices or chemical multi-sensors

2005 ◽  
Vol 283 (3-4) ◽  
pp. 444-449 ◽  
Author(s):  
Estelle Botzung-Appert ◽  
Julien Zaccaro ◽  
Cécile Gourgon ◽  
Yves Usson ◽  
Patrice L. Baldeck ◽  
...  
Keyword(s):  
Thin Films ◽  
Data Storage ◽  
Sol Gel ◽  
Optical Data Storage ◽  
Optical Data ◽  
Spatial Control ◽  
Storage Devices

scholarly journals Studies on Structural, Morphological, Local Electrical, Optical and Magnetic Properties of Iron Site Manganese Substituted Yttrium Orthoferrite

2020 ◽  
Author(s):  
Turghunjan Gholam ◽  
Liu Peng ◽  
Dong Yu-Hui ◽  
Wang Hui-Qiong
Keyword(s):  
Magnetic Properties ◽  
Data Storage ◽  
Local Structure ◽  
Nearest Neighbor ◽  
Optical Data Storage ◽  
Optical Data ◽  
Magnetic Field Sensors ◽  
Storage Devices ◽  
Yttrium Orthoferrite ◽  
Optical And Magnetic Properties

Abstract Yttrium orthoferrite (YFeO3) is of considerable interest for its potential application in magnetic field sensors and magneto optical data storage devices. Doping is one of the effective approaches to tune the compound properties. And it is important to determine the doping sites of the dopants to better understanding the related mechanism. In this work, Manganese (Mn) doped YFeO3, i.e., YFMxO powders with 0 ≤ x ≤ 0.1 were synthesized by hydrothermal method to study the influences of doping on their structural, morphological, local electrical, optical and magnetic properties. The experimental results show that Mn dopants occupy Iron (Fe) sites and that all these samples exhibit an orthorhombic structure with space group Pnma. Refined structure parameters are presented. Morphology images show the shape evolution from layered to multilayered with increasing Mn content. The Fe and Y K-edge local structure studies indicate that the valency of Fe and Y is mainly found in trivalent state, which also indicate that substitution of Mn ions not only affects the nearest neighbor atomic shell of Fe but also affects the nearest neighbor’s local structure of Y atoms. IR spectra reveal the characteristic vibrations of the obtained YFMxO samples. From the magnetic study, it is observed that the substitution of Y ions by Mn ions changes the magnetic property of YFeO3 from ferromagnetic to paramagnetic. Our results show that the addition of Mn exhibits an evident influent on the local structural and magnetic properties.

The Patterned Optical Phase Change Recording Media

2005 ◽  
Author(s):  
Evan Small ◽  
Sadegh M. Sadeghipour ◽  
Mehdi Asheghi
Keyword(s):  
Phase Change ◽  
Data Storage ◽  
Numerical Aperture ◽  
Data Access ◽  
Optical Microscope ◽  
Optical Data Storage ◽  
High Density ◽  
Optical Data ◽  
Optical Phase ◽  
Storage Devices

Demands for the high storage capacities and rates of data transfer have been overwhelming in the recent years. With the increasing use of multimedia, the rewritable optical phase-change disks, e.g. CD and DVD, have become more popular. The optical PC data storage devices provide relatively short data access rates (∼ 10 MHz) and moderate areal densities. As in other areas of data storage, there has been tremendous demand and pressure, driven by consumer application, for inexpensive high-density PC systems. So far, the optical data storage industry has managed to meet the demands by using lasers with shorter wavelengths and objective lenses with higher numerical aperture (NA). Several strategies such as “multilevel storage layers” [1] and “mark radial width modulation” [2] have been proposed for the next generation of the high-density PC data storage devices. There have been advances in near field optical techniques to increase density (40 Gb/in) using solid immersion lens [3]. Hosaka et al. [4] demonstrated 60 nm domains in phase change media that translates to 170 Gb/in2 using a scanning near-filed optical microscope. Kado and Tohda [5] used an atomic force microscope (AFM) to locally modify the electrical property (×100) of a PC material by applying an electrical pulse between the probe and media. They achieved an areal density near 1 Tbits/cm2.

Copper vanadates as candidate materials for phase change optical memory

1992 ◽  
Vol 7 (3) ◽  
pp. 741-744 ◽  
Author(s):  
D.P. Birnie ◽  
J.D. Weinberg ◽  
D.G. Swanson
Keyword(s):  
Thin Film ◽  
Phase Change ◽  
Data Storage ◽  
Optical Memory ◽  
Optical Data Storage ◽  
Optical Data ◽  
Storage Devices ◽  
Phase Development ◽  
Successful Phase ◽  
Oxide Melts

Several copper vanadium oxide melts were tested for possible application as the active medium in phase-change optical data storage devices. These materials were melted in the bulk and then quenched. Their phase development was characterized to help determine their applicability to optical data storage. It was found that they satisfy many of the criteria necessary for successful phase-change data storage; further studies of their behavior in thin film geometry would be warranted.

Free-Space Integrated Optics Realized by Surface-Micromachining

1997 ◽  
Vol 08 (02) ◽  
pp. 283-297 ◽  
Author(s):  
M. C. Wu ◽  
L. Y. Lin ◽  
S. S. Lee ◽  
C. R. King
Keyword(s):  
Data Storage ◽  
Free Space ◽  
Optical Switching ◽  
Optical Data Storage ◽  
Optical Systems ◽  
Optical Data ◽  
Optical Bench ◽  
Surface Micromachining ◽  
Free Space Optical ◽  
Optical Elements

A surface-micromachined free-space micro-optical bench (FS-MOB) technology has been proposed to monolithically integrate micro-optical elements, optomechanical structures, micropositioners, and microactuators on the same substrate. Novel three-dimensional micro-optical elements have been fabricated by surface-micromachining techniques. The optical axes of these optical elements are parallel to the substrate, which enables the entire free-space optical system to be integrated on a single substrate. Mocro-scale Fresnel lenses, refractive microlenses, mirrors, beam-splitters, gratings, and precision optical mounts have been successfully fabricated and characterized. Integration of micro-optical elements with translation or rotation stages provides on chip optical alignment or optomechanical switching. This new free-space micro-optical bench technology could significantly reduce the size, weight, an cost of most optical systems, and could have a significant impact on optical switching, optical sensing and optical data storage systems as well as packaging of optoelectronic components.

scholarly journals Selective fluorescence functionalization of dye-doped polymerized structures fabricated by direct laser writing (DLW) lithography

Nanoscale ◽  
2015 ◽  
Vol 7 (47) ◽  
pp. 20164-20170 ◽  
Author(s):  
Gustavo de Miguel ◽  
Giuseppe Vicidomini ◽  
Martí Duocastella ◽  
Alberto Diaspro
Keyword(s):  
Data Storage ◽  
Optical Data Storage ◽  
Optical Data ◽  
Direct Laser Writing ◽  
Laser Writing ◽  
Aggregation Mechanism ◽  
Thermally Induced ◽  
Storage Devices ◽  
Direct Laser

Spatially- and intensity-selective fluorescence photopolymerized resins are fabricated through a thermally-induced di-aggregation mechanism with applications as optical data storage devices.

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