Modulation of polymer refractive indices with diamond nanoparticles for metal-free multilayer film mirrors.
Modulation of the refractive index of a polymer was achieved by combining it with diamond nanoparticles (NDs). The increase in the refractive index was controlled by the amount of NDs added, according to the Lorentz-Lorenz equation. The refractive index of poly(vinyl alcohol) (PVA), which was used as the base polymer, increased from 1.52 to 1.88. A multilayer film consisting of alternating layers of ND-PVA composite and poly(methyl methacrylate) exhibited ca. 80% reflectance with 10 bilayers.
Tomonari
T
Ogata
Ryohei
R
Yagi
Nozomi
N
Nakamura
Yutaka
Y
Kuwahara
Seiji
S
Kurihara
D003460:Crystallization; D018130:Diamond; D005898:Glass; D008670:Metals / Q000737:chemistry; D053758:Nanoparticles / Q000737:chemistry*; D055095:Optics and Photonics; D010087:Oxides / Q000737:chemistry; D010316:Particle Size; D011108:Polymers / Q000737:chemistry*; D011142:Polyvinyl Alcohol / Q000737:chemistry; D012031:Refractometry; D012825:Silicon / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet / Q000379:methods
D008670:Metals; D010087:Oxides; D011108:Polymers; D018130:Diamond; D011142:Polyvinyl Alcohol; D012825:Silicon