All-nanoparticle thin-film coatings

Daeyeon Lee; Michael F Rubner; Robert E Cohen

doi:10.1021/nl061776m

All-nanoparticle thin-film coatings

Nano Lett. 2006 Oct;6(10):2305-12. doi: 10.1021/nl061776m.

Authors

Daeyeon Lee¹, Michael F Rubner, Robert E Cohen

Affiliation

¹ Department of Chemical Engineering, Department of Materials Science and Engineering, and Center for Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

PMID: 17034102
DOI: 10.1021/nl061776m

Abstract

All-nanoparticle thin-film coatings that exhibit antireflection, antifogging (superhydrophilicity), and self-cleaning properties have been prepared via layer-by-layer deposition of TiO(2) and SiO(2) nanoparticles. The porosity and chemical composition of the coatings were determined using a simple method that is based on ellipsometry and does not require any assumptions about the refractive indices of the constituent nanoparticles. The presence of nanopores in the TiO(2)/SiO(2) nanoparticle coatings results in superhydrophilicity as well as antireflection properties. The superhydrophilicity of contaminated coatings could also be readily recovered and retained after ultraviolet irradiation.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Adsorption
Crystallization / methods*
Feasibility Studies
Materials Testing
Membranes, Artificial*
Nanostructures / chemistry*
Nanostructures / ultrastructure*
Silicon Dioxide / chemistry*
Surface Properties
Titanium / chemistry*

Substances

Membranes, Artificial
titanium dioxide
Silicon Dioxide
Titanium