Sulfur containing optical plastics and its ophthalmic lenses applications

AbstractPlastics produced from the sulfur-based monomer are excellent materials with many optical applications such as ophthalmic lenses, fiber optics and non- linear optics. High refractive index plastic materials are able to reduce the curvature, edge and center thickness of lenses. Sulfur containing plastics such as sulfide, polysulfide, and sulfur containing vinyl compound, thioacrylate, polythiol and isocyanate/isothiocyanate based monomers have demonstrated high refractive index, high Abbe number, good impact strength, excellent machinability, good tintability and good transmittance. In the present article, various sulfur containing plastics with different types of monomers for ophthalmic lens applications are reviewed.

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Development of High Refractive Index Plastics

e-Polymers ◽

10.1515/epoly.2007.7.1.1384 ◽

2007 ◽

Vol 7 (1) ◽

Cited By ~ 6

Author(s):

G.S. Jha ◽

G. Seshadri ◽

A. Mohan ◽

R.K. Khandal

Keyword(s):

Refractive Index ◽

State Of The Art ◽

High Refractive Index ◽

Present Review ◽

Current State ◽

Plastic Materials ◽

Alternative Materials ◽

Recent Developments ◽

Optical Applications ◽

Optical Plastics

AbstractOptical plastics have been the priority area of research for material scientists worldwide, mainly, to find alternative materials to glass, a conceptual optical material in use over the years. There are numerous advantages of using plastics for optical applications, in particular for ophthalmic applications over glass. Recently, the researchers have been putting their efforts to develop novel plastic materials to meet requirements of ophthalmic industries. The present review compiles the recent developments in the area of optical plastics. The aim is to present the current state-of-the-art in the field, besides analyzing the various aspects of developing optical plastics. The review presents various possible approaches to achieve the desired properties e.g. high refractive index of the optical plastic materials.

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Novel way of making high refractive index plastics; metal containing polymers for optical applications

e-Polymers ◽

10.1515/epoly.2009.9.1.1197 ◽

2009 ◽

Vol 9 (1) ◽

Cited By ~ 4

Author(s):

Mukti Tyagi ◽

Gunjan Suri ◽

Pranshu Chhabra ◽

Geetha Seshadri ◽

Amita Malik ◽

...

Keyword(s):

Refractive Index ◽

High Refractive Index ◽

Optical Devices ◽

Metal Salts ◽

Inorganic Glass ◽

Metal Containing Polymers ◽

Optical Applications ◽

Almost All ◽

New Applications ◽

Optical Plastics

AbstractPlastics are being preferred in almost all possible applications of materials. Several new applications including optical devices are being developed using plastics replacing conventional materials like inorganic glass etc. For the optical applications, the most important properties of plastics essential for their desired performance include refractive index, Abbe number, optical clarity, etc. The biggest challenge in developing suitable materials for optical applications has always been to meet the criteria of high refractive index along with a high Abbe number. Normally, if the refractive index increases, the Abbe number automatically decreases. The researchers have tried several approaches to deal with this typical challenge without which it is not possible to develop novel optical plastics. Presently the most popularly known optical plastics includes polymers such as polymethacrylates, polyurethanes, polycarbonates, polystyrene and diethylene glycol bis allyl carbonate. The latest material of high refractive index plastics with a refractive index of 1.67 belongs to the polythiourethanes chemistry. Several approaches are being tried world over, to develop materials of high refractive index. One of the approaches being pursued for enhancement of refractive index of existing monomers pertain to the incorporation of metals or metal salts in the matrices. The other commonly tried but difficult to achieve approaches pertain to the preparation of nanoparticles or nanocomposites.

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Challenges in preparation of metal-containing nanocomposites; dispersion of titanium into plastics

e-Polymers ◽

10.1515/epoly.2010.10.1.1177 ◽

2010 ◽

Vol 10 (1) ◽

Author(s):

Gunjan Sur ◽

Pranshu Chhabra ◽

Ruchi Gupta ◽

Shikha Saxena ◽

Mukti Tyagi ◽

...

Keyword(s):

Mechanical Properties ◽

Refractive Index ◽

Optical Properties ◽

Polymer Matrix ◽

Polymer Matrices ◽

Plastic Materials ◽

Metal Containing Polymers ◽

Optical Applications ◽

Metal Incorporation ◽

Optical Plastics

AbstractMetal containing polymers are of great interest as they have proven to be the most promising materials for applications such as microelectronics, holography and magnetic recording of information. Metal containing polymers also provide an alternative to even the specialty glass materials conventionally used for optical applications. Metals such as barium, lead and lanthanum have been used to improve the optical properties such as refractive index and mechanical properties such as hardness of optical plastics. The metal-containing optical plastic materials with improved refractive index of as much as 1.60 along with the Abbe number of more than 30 have been successfully designed using these metals by the authors of this paper. To further increase the refractive index without any drop in Abbe number and to improve the hardness of the polymer matrix, titanium would be the most promising metal. Incorporation of titanium in plastic matrices to form homogeneous and optically clear compositions is a challenging task. This paper reviews the state-ofthe- art by which titanium can be dispersed in polymer matrices to form metal containing composites as optical plastics.

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Anapole Modes in Hollow Nanocuboid Dielectric Metasurfaces for Refractometric Sensing

Nanomaterials ◽

10.3390/nano9010030 ◽

2018 ◽

Vol 9 (1) ◽

pp. 30 ◽

Cited By ~ 11

Author(s):

José Algorri ◽

Dimitrios Zografopoulos ◽

Antonio Ferraro ◽

Braulio García-Cámara ◽

Ricardo Vergaz ◽

...

Keyword(s):

Refractive Index ◽

High Refractive Index ◽

Spectral Position ◽

Q Factor ◽

Linear Optics ◽

Refractive Index Sensitivity ◽

Infrared Wavelength ◽

Non Linear Optics ◽

Research Fields ◽

Sensing Applications

This work proposes the use of the refractive index sensitivity of non-radiating anapole modes of high-refractive-index nanoparticles arranged in planar metasurfaces as a novel sensing principle. The spectral position of anapole modes excited in hollow silicon nanocuboids is first investigated as a function of the nanocuboid geometry. Then, nanostructured metasurfaces of periodic arrays of nanocuboids on a glass substrate are designed. The metasurface parameters are properly selected such that a resonance with ultrahigh Q-factor, above one million, is excited at the target infrared wavelength of 1.55 µm. The anapole-induced resonant wavelength depends on the refractive index of the analyte superstratum, exhibiting a sensitivity of up to 180 nm/RIU. Such values, combined with the ultrahigh Q-factor, allow for refractometric sensing with very low detection limits in a broad range of refractive indices. Besides the sensing applications, the proposed device can also open new venues in other research fields, such as non-linear optics, optical switches, and optical communications.

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High Refractive Index Sulfur‐Containing Polymers ( HRISPs )

Sulfur‐Containing Polymers ◽

10.1002/9783527823819.ch9 ◽

2021 ◽

pp. 305-338

Author(s):

Johannes M. Scheiger ◽

Patrick Theato

Keyword(s):

Refractive Index ◽

High Refractive Index ◽

Sulfur Containing

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Synthesis and characterization of poly(cyclohexylthioacrylate) (PCTA) with high refractive index and low birefringence for optical applications

Macromolecular Research ◽

10.1007/s13233-015-3128-8 ◽

2015 ◽

Vol 23 (10) ◽

pp. 960-964

Author(s):

Jiye Lee ◽

Hyeonuk Yeo ◽

Munju Goh ◽

Bon-Cheol Ku ◽

Honglae Sohn ◽

...

Keyword(s):

Refractive Index ◽

High Refractive Index ◽

Synthesis And Characterization ◽

Optical Applications

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Thermally stable transparent sol–gel based active siloxane–oligomer materials with tunable high refractive index and dual reactive groups

RSC Advances ◽

10.1039/c6ra13164f ◽

2016 ◽

Vol 6 (75) ◽

pp. 70825-70831 ◽

Cited By ~ 8

Author(s):

Mei Chen ◽

Guoyan Zhang ◽

Xiao Liang ◽

Wanshu Zhang ◽

Le Zhou ◽

...

Keyword(s):

Refractive Index ◽

Sol Gel ◽

High Refractive Index ◽

Thermally Stable ◽

Transparent Film ◽

Reactive Groups ◽

Optical Applications

A novel active silicone–oligomers used as chemical intermediates in optical applications were synthesized and one of their derivatives, a transparent film with high refractive index, were presented.

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