Core shell nanocomposite optical plastic article
View Patent ↗A nanocomposite optical plastic article has a plastic host material with a temperature sensitive optical vector (x) and a core shell nanoparticulate material dispersed into the plastic host material. The core shell nanoparticulate material is characterized by a core defined by a nanoparticulate material which has a temperature sensitive optical vector (x 1 ) and a shell defined by a coating material layer coated onto the core. It is important to the invention that temperature sensitive vector (x 1 ) is directionally opposed to the temperature sensitive optical vector (x) and n shell <n plastic host <n core .
1. A nanocomposite optical plastic article, comprising:
a plastic host material having a temperature sensitive optical vector x; a core shell nanoparticulate material dispersed into said plastic host material, said core shell nanoparticulate material having a core defined by a nanoparticulate material having a temperature sensitive optical vector x 1 , a shell defined by a coating material layer coated onto said core, said shell having a temperature sensitive optical vector x 2 and wherein said temperature sensitive optical vector x 1 is directionally opposed to said temperature sensitive optical vector x of said plastic host material, wherein said temperature sensitive optical vector x is defined as an index of refraction n plastic host , said temperature sensitive optical vector x 1 is defined as an index of refraction n core , and wherein said temperature sensitive optical vector x 2 is defined as an index of refraction of the shell n shell , wherein n shell <n plastic host <n core , wherein said core comprises a material selected from the group consisting of: ALON, aluminum oxide, beryllium oxide, cadmium sulfide, calcium carbonate, diamond, magnesium aluminate, magnesium fluoride, magnesium oxide, potassium titano phosphate, silica, tellurium oxide, yttrium oxide and zinc selenide.
2. The nanocomposite optical plastic article recited in claim 1 wherein said plastic host material comprises a material selected from the group consisting of: polymethylmethacrylate, polystyrene, polycarbonate, cyclic olefin polymer, polysulfone, polyethersulfone, diallyl glycolcarbonate, epoxides, thermoset polyesters, and blends and copolymers of those listed.
3. The nanocomposite optical plastic article recited in claim 1 wherein said nanoparticulate material has a particle size of about 15 nm.
4. The nanocomposite optical plastic article recited in claim 1 wherein said plastic host material is polymethymethacrylate.
5. The nanocomposite optical plastic article recited in claim 3 wherein said nanoparticulate material comprises silica nanoparticles.
6. The nanocomposite optical plastic article recited in claim 3 wherein said nanoparticulate material comprises magnesium oxide nanoparticles.
7. The nanocomposite optical plastic article recited in claim 1 wherein said nanoparticulate material has a particle size less than about 40 nm.
8. The nanocomposite optical plastic article recited in claim 1 wherein said nanoparticulate material has a particle size less than about 20 nm.
9. The nanocomposite optical plastic article recited in claim 1 wherein said coating material layer has a temperature sensitive optical vector x 2 , wherein x 2 is directionally opposed to said temperature sensitive optical vector x of said plastic host material.
10. The nanocomposite optical plastic article recited in claim 1 wherein said optical article is a lens.
11. The nanocomposite optical plastic article recited in claim 1 wherein said optical article is an optical fiber.
12. A nanocomposite optical plastic article, comprising:
a plastic host material having a temperature sensitive optical vector x; a core shell nanoparticulate material dispersed into said plastic host material, said core shell nanoparticulate material having a zinc sulfide core defined by a nanoparticulate material having a temperature sensitive optical vector x 1 , a magnesium fluoride shell defined by a coating material layer coated onto said zinc sulfide core, said magnesium fluoride shell having a temperature sensitive optical vector x 2 and wherein said temperature sensitive optical vector xis directionally opposed to said temperature sensitive optical vector x of said plastic host material, wherein said temperature sensitive optical vector x is defined as an index of refraction n plastic host , said temperature sensitive optical vector x 1 is defined as an index of refraction n core , and wherein said temperature sensitive optical vector x 2 is defined as an index of refraction of the magnesium fluoride shell n shell , wherein n shell <n plastic host <n core .
13. The nanocomposite optical plastic article recited in claim 12 wherein said zinc sulfide nanoparticles have a particle size of about 10 nm, said zinc sulfide nanoparticles being provided with a 3 nm thick coating layer of magnesium fluoride forming a core shell nanoparticulate material, said core shell nanoparticulate material being dispersed at 5 to 50 wt-% in a polycarbonate plastic host material.
14. The nanocomposite optical plastic article recited in claim 12 wherein said plastic host material comprises a material selected from the group consisting of: polymethylmethacrylate, polystyrene, polycarbonate, cyclic olefin polymer, polysulfone, polyethersulfone, diallyl glycolcarbonate, epoxides, thermoset polyesters, and blends and copolymers of those listed.
15. The nanocomposite optical plastic article recited in claim 12 wherein said nanoparticulate material has a particle size less than about 40 nm.
16. The nanocomposite optical plastic article recited in claim 12 wherein said nanoparticulate material has a particle size less than about 20 nm.
17. The nanocomposite optical plastic article recited in claim 12 wherein said optical article is a lens.
18. The nanocomposite optical plastic article recited in claim 12 wherein said optical article is an optical fiber.