scholarly journals The Effect Of External Electric Field And Substrate Surface On Molecular Anchoring To Increase The Refractive Index Of DR-1 Film

2018 ◽  
Vol 2 (1) ◽  
pp. 73-76
Author(s):  
Donny Royke Wenas ◽  
Cyrke A.N. Bujung
Keyword(s):  
Refractive Index ◽  
Electric Field ◽  
External Electric Field ◽  
Data Storage ◽  
Optical Switching ◽  
Substrate Surface ◽  
Chain Structure ◽  
Optical Data Storage ◽  
Optical Data ◽  
Device Applications

The Disperse Red-1 (DR-1) molecule with its conjugated chain structure is known to offer great potential for photonic device applications, such as optical switching and optical data storage. For the aforementioned device applications, thin film of those molecules must be fabricated satisfying the requirements of having smooth and flat surface, uniform thickness and stable structure as well as attractive optical properties. As a result of this research, DR-1 films have been obtained which exhibit crystalline structure with the molecules deposited in parallel polar orientation perpendicular to the substrate and regular head to tail stacking when the electric field applied larger than 0.59 MV/m. This is understood to be result of the formation of strong hydrogen bonding acting as the anchoring mechanism. In addition, it is shown an increase in the optical refractive index as a result of an increase in the external electric field in the deposition process of the DR-1 films.

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.

Recent Progress of Electro-optic Polymers for Device Applications

1997 ◽  
Vol 488 ◽  
Author(s):  
Alex K-Y. Jen ◽  
Qing Yang ◽  
Seth R. Marder ◽  
Larry R. Dalton ◽  
Ching-Fong Shu
Keyword(s):  
Data Storage ◽  
High Speed ◽  
Stable State ◽  
Optical Data Storage ◽  
Device Fabrication ◽  
Optical Data ◽  
Material System ◽  
Electro Optic ◽  
Potential Applications ◽  
Device Applications

AbstractElectro-optic (E-O) polymers have drawn great interest in recent years because of their potential applications in photonics devices such as high speed modulators and switches, optical data storage and information processing1–2. In order to have suitable materials for device fabrication, it is essential to design and develop polymeric material systems (active and passive polymers) with matched refractive indices, large E-O coefficients, good temporal and photochemical stability3–8 The E-O response of an active polymer commonly arises from the electric field induced alignment of its second-order nonlinear optical (NLO) chromophore, either doped as a guest/host system or covalently bonded as a side-chain. Because of the strong interaction among the electric dipoles, the poled structure is in a meta-stable state; the poled NLO chromophores which possess large dipole moment will tend to relax back to the randomly oriented state. As a result, the stability of the poled structure strongly depends on the rigidity of the overall material system. As it might be expected, the continuous increases of the rigidity and Tg of poled polymers imposes constraints on the selection of suitable chromophores that can survive the hightemperature poling and processing conditions. To circumvent this problem, we have developed a series of chromophores that possess conformation-locked geometry and perfluoro-dicyanovinylsubstituted electron-accepting group which demonstrate both good thermal stabilty and nonlinearity. This paper provides a brief review of these highly efficient and thermally stable chromophores and polymers for device applications.

Nondestructive up-conversion readout in Er/Yb co-doped Na0.5Bi2.5Nb2O9-based optical storage materials for optical data storage device applications

2017 ◽  
Vol 5 (15) ◽  
pp. 3838-3847 ◽  
Author(s):  
Qiwei Zhang ◽  
Shuangshuang Yue ◽  
Haiqin Sun ◽  
Xusheng Wang ◽  
Xihong Hao ◽  
...  
Keyword(s):  
Data Storage ◽  
Optical Data Storage ◽  
Photon Absorption ◽  
Optical Data ◽  
Storage Device ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Device Applications ◽  
Co Doped ◽  
Absorption Mode

Er/Yb co-doped NBN photochromics exhibit excellent luminescence readout capability by using a two-photon absorption mode with extremely low destruction on information recording.

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.

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.

In situ synthesis, crystallisation, and thin-film processing of single crystals of trans-[Ru(SO2)(NH3)4(H2O)][p-TolSO3]2 bearing SO2 linkage photo-isomers: towards optical device applications

CrystEngComm ◽  
2015 ◽  
Vol 17 (27) ◽  
pp. 5026-5031 ◽  
Author(s):  
J. M. Cole ◽  
K. Y. M. Yeung ◽  
G. Pace ◽  
S. O. Sylvester ◽  
D. Mersch ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Single Crystals ◽  
Data Storage ◽  
Optical Data Storage ◽  
In Situ Synthesis ◽  
Optical Data ◽  
High Quality ◽  
Device Applications

High-quality microcrystals of trans-[Ru(SO2)(NH3)4(H2O)][p-TolSO3]2 photoisomers are embedded within thin films of polyvinylacrylate, which presents opportunities for optical data storage applications.

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