Please use this identifier to cite or link to this item: doi:10.22028/D291-24549
Title: Fabrication of monolithic refractive optical lenses with organic-inorganic nanocomposites : relations between composition and mechanical and optical properties
Author(s): Müller, Peter
Braune, Bert
Becker, Carsten
Schmidt, Helmut K.
Krug, Herbert
Language: English
Year of Publication: 1997
OPUS Source: Sol-gel optics IV : 30 July-1 August 1997, San Diego, California / Bruce S. Dunn ... [et al.], chairs/editors. - Bellingham, Wash. : SPIE, c1997. - (SPIE proceedings series ; 3136), S. 462-469
SWD key words: Monolith
Mechanische Eigenschaft
Optische Eigenschaft
Organisch-anorganischer Hybridwerkstoff
DDC notations: 620 Engineering and machine engineering
Publikation type: Conference Paper
Abstract: Sol-gel derived organic-inorganic hybrid materials and their potential for the production of refractive optical elements are presented. The main components of the investigated compositions are precondensed silanes with polymerizable double bonds (e.g. methacryloxypropyltrimethoxysilane (MPTS)) and co-condensates thereof. Dimethacrylates like tetraethyleneglycoldimethacrylate (TEGDMA) were employed as organic monomers. Molar ratios of silanes to organic monomers between 10:90 and 90:10 were investigated. Nanoscaled titania was incorporated in the homogeneous mixture of silanes and organic monomers. The combination of different molecular hybrid matrices and inorganic nanoparticles allows the adjustment of material properties, for example: impact strength between 2 and 15 kJ/m2, Youngs moduli between 0.8 and 3.7 GPa and universal hardness in the range from 40 to 170 N/mm2. Phase separation could be kept in the nanometer range to minimize optical losses due to scattering effects. Depending on composition, ne could be varied between 1.50 and 1.54, whereby the corresponding Abbe numbers ranged from 57 to 45. Ophthalmic lenses were prepared in less than 10 hours by simple mould techniques and by applying a combination of photochemical and thermal curing processes.
Link to this record: urn:nbn:de:bsz:291-scidok-28547
ISBN: 0-8194-2558-3
Date of registration: 10-May-2010
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
SciDok - Der Wissenschaftsserver der Universität des Saarlandes

Files for this record:
File Description SizeFormat 
sm199725.pdf1,6 MBAdobe PDFView/Open

Items in SciDok are protected by copyright, with all rights reserved, unless otherwise indicated.