Nanostructured ceramic film formation on self-assembled monolayers via a biomimetic approach

Guangneng Zhang, Douglas A. Bolm, Dorothy W. Coffey, Lawrence F. Allard, Junghyun Cho

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A biomimetic approach is employed to deposit ceramic films on organic self-assembled monolayers (SAMs) coated substrates. Specifically, zirconia (ZrO2) films are grown in a zirconium sulfate precursor solution at near room temperatures (∼70°C). This process, directed by the nanoscale organic template, mimics the controlled nucleation and growth of the biominerals such as bones and teeth. The resultant zirconia films consist of nanosized particles (5-10 nm) that are precipitated out in a supersaturated precursor solution. Cross-sectional TEM and STEM works were performed to quantitatively analyze the film structure and chemistry, as well as interfacial region of the ceramic-SAM films. A stepwise deposition process was developed to avoid excessive formation of aggregation. Further, the dynamic nanoindentation testing was employed to assess the thickness and film-only intrinsic mechanical properties for direct comparison among the films processed with different processing parameters and microstructures. The films with finer particulate structure displayed higher intrinsic modulus than did those with coarser structure.

Original languageEnglish
Title of host publicationAssembly at the Nanoscale
Subtitle of host publicationToward Functional Nanostructured Materials
Pages303-308
Number of pages6
StatePublished - 2005
Event2005 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 28 2005Dec 2 2005

Publication series

NameMaterials Research Society Symposium Proceedings
Volume901
ISSN (Print)0272-9172

Conference

Conference2005 MRS Fall Meeting
Country/TerritoryUnited States
CityBoston, MA
Period11/28/0512/2/05

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