Enhanced adhesion of atomic layer deposited titania on polycarbonate substrates

B A Latella; G Triani; Z Zhang; K Short; John R Bartlett; M Ignat

doi:10.1016/j.tsf.2006.08.022

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Enhanced adhesion of atomic layer deposited titania on polycarbonate substrates

Journal article

Peer reviewed

Enhanced adhesion of atomic layer deposited titania on polycarbonate substrates

B A Latella, G Triani, Z Zhang, K Short, John R Bartlett and M Ignat

Thin Solid Films, Vol.515(5), pp.3138-3145

2007

DOI: https://doi.org/10.1016/j.tsf.2006.08.022

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Abstract

Physical Sciences

Engineering

Technology

Interfacial adhesion of atomic layer deposited titania films on polycarbonate substrates with and without a water-plasma treatment has been studied using in situ observation during microtensile testing. Specific attention is paid to multiple tension-generated transverse cracks in the titania films when subjected to externally applied uniaxial tensile stresses. The strength, fracture toughness and interfacial adhesion of the titania film on polycarbonate were deduced from theoretical models based on experimentally determined parameters. The tensile tests were conducted in a micromechanical tester positioned under an optical microscope allowing in situ viewing of cracking damage. The strain to initiate first cracking and the crack density as a function of strain were obtained. The in situ observations indicated different interfacial behaviour between water-plasma-treated and non-treated samples. It is shown that the water plasma treatment drastically improves the adhesion of the titania film to polycarbonate. Calculations show that the fracture energy required for film debonding in the plasma-treated polycarbonate is 5.9 J/m 2 compared to 2.5 J/m 2 for the untreated sample. A simple chemical structure model was used to explain the observed differences.

Details

Title: Enhanced adhesion of atomic layer deposited titania on polycarbonate substrates
Authors: B A Latella (Author) - Australian Nuclear Science and Technology Organisation
G Triani (Author) - Australian Nuclear Science and Technology Organisation
Z Zhang (Author) - Australian Nuclear Science and Technology Organisation
K Short (Author) - Australian Nuclear Science and Technology Organisation
John R Bartlett (Author) - Australian Nuclear Science and Technology Organisation
M Ignat (Author) - Australian Nuclear Science and Technology Organisation
Publication details: Thin Solid Films, Vol.515(5), pp.3138-3145
Publisher: Elsevier S.A.
Date published: 2007
DOI: 10.1016/j.tsf.2006.08.022
ISSN: 0040-6090
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99449206102621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Materials Science, Coatings & Films; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter

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