The Mechanical Performance of Optically Tuned Ceramic Nanomultilayers

33 Pages Posted: 21 Feb 2023

See all articles by Danielle E. White

Danielle E. White

University of Southern California

Chelsea D. Appleget

The Aerospace Corporation

Edoardo Rossi

Roma Tre University - Engineering Department

Marco Sebastiani

Roma Tre University

Andrea M. Hodge

University of Southern California - Departmentof Aerospace and Mechanical Engineering

Abstract

Multifunctional optical nanomultilayers (NMs) are needed for a wide array of applications, ranging from optical windows to electronic screens. Since the individual material constituents in optical coatings are often selected only for their desirable optical properties, mechanical characterization of the optical nanomultilayers is typically limited. Here, AlN/SiO2, TiO2/SiO2, and AlN/Al2O3 nanomultilayers synthesized in non-optimized and optimized optical performance layer configurations are tested using microtensile, nanoindentation, and pillar splitting techniques to highlight the effects of optical optimization on mechanical performance. Trends within each type of test and across all deformation modes reveal that layer thickness, volume fraction, and interfacial crystallinity can be viewed as controlling features for optical and mechanical performance, although their correlation may vary. It was observed that both configurations of the AlN/Al2O3 NMs exhibit the highest mechanical performance across all three testing techniques with an average experimental transmittance of 93.8% for the optimized layer configuration. Overall, the results from this expanded view of mechanical properties in ceramic optical nanomultilayers suggest the possibility of tuning film characteristics for joint optimization of opto-mechanical nanomultilayered coatings.

Keywords: Nanomultilayer, Coatings, mechanical, Optical, ceramic, multifunctional

Suggested Citation

White, Danielle E. and Appleget, Chelsea D. and Rossi, Edoardo and Sebastiani, Marco and Hodge, Andrea M., The Mechanical Performance of Optically Tuned Ceramic Nanomultilayers. Available at SSRN: https://ssrn.com/abstract=4365895 or http://dx.doi.org/10.2139/ssrn.4365895

Danielle E. White

University of Southern California ( email )

2250 Alcazar Street
Los Angeles, CA 90089
United States

Chelsea D. Appleget

The Aerospace Corporation ( email )

Edoardo Rossi

Roma Tre University - Engineering Department ( email )

Italy

Marco Sebastiani

Roma Tre University ( email )

Via G. Chiabrera, 199
Rome, 00145
Italy

Andrea M. Hodge (Contact Author)

University of Southern California - Departmentof Aerospace and Mechanical Engineering ( email )

Los Angeles, CA
United States

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