Light scattering in poly (vinyl alcohol) hydrogels reinforced with nanocellulose for ophthalmic use

Tummala, Gopi Krishna,1986-Uppsala universitet,Nanoteknologi och funktionella material,Nanotechnology and functional materials (författare)

Scattering of ophthalmic devices is a complex phenomenon involving both surface and bulk light-material interactions. In this work, light scattering of nanocellulose reinforced PVA hydrogels contact lenses for ophthalmic applications was investigated. Optical microscopy, fluorescence microscopy and atomic force microscopy (AFM) techniques were used for ultrastructure characterization. Further, 3D angle resolved light scattering measurements in the visible spectral range were performed using a BTDF (bidirectional transmittance distribution function) sensor to quantify the scattered light. Surface and bulk scattering properties were discerned using white light interferometry. Total scatter levels ranging from 3% to 40% were observed depending on the hydrogel composition. The most critical factor affecting the light scattering properties in nanocellulose-reinforced PVA hydrogels was related to the state of hydration of the hydrogels, which is critical to maintain visual acuity of ophthalmic devices.

TEKNIK OCH TEKNOLOGIER Nanoteknik hsv//swe
ENGINEERING AND TECHNOLOGY Nano-technology hsv//eng
Engineering Science with specialization in Nanotechnology and Functional Materials
Teknisk fysik med inriktning mot nanoteknologi och funktionella material

Felde, NadjaFraunhofer Institute for Applied Optics and Precision Engineering (författare)
Gustafsson, Simon,1988-Uppsala universitet,Nanoteknologi och funktionella material(Swepub:uu)simgu319 (författare)
Bubholz, AdrianFraunhofer Institute for Applied Optics and Precision Engineering (författare)
Schröder, SvenFraunhofer Institute for Applied Optics and Precision Engineering (författare)
Mihranyan, Albert,1978-Uppsala universitet,Nanoteknologi och funktionella material(Swepub:uu)almih677 (författare)
Uppsala universitetNanoteknologi och funktionella material (creator_code:org_t)

Ingår i:Optical Materials Express: Optical Society of America7:8, s. 2824-28372159-39302159-3930

Av författaren/redakt...: Tummala, Gopi Kr ...; Felde, Nadja; Gustafsson, Simo ...; Bubholz, Adrian; Schröder, Sven; Mihranyan, Alber ...

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