This work was supported by the Office of Naval Research under Grant N00014-00-1-0214, and made use of Materials Research Laboratory Central Facilities supported by the MRSEC Program of the National Science Foundation under award No. DMR00-80034. The authors thank Dr. Yuval Golan for many useful discussions.
Mechanical and Structural Properties of BaCrO4 Nanorod Films under Confinement and Shear†
Article first published online: 10 MAR 2004
Copyright © 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Advanced Functional Materials
Volume 14, Issue 3, pages 238–242, March, 2004
How to Cite
Gourdon, D., Yasa, M., Godfrey Alig, A. R., Li, Y., Safinya, C. R. and Israelachvili, J. N. (2004), Mechanical and Structural Properties of BaCrO4 Nanorod Films under Confinement and Shear. Adv. Funct. Mater., 14: 238–242. doi: 10.1002/adfm.200305078
- Issue published online: 10 MAR 2004
- Article first published online: 10 MAR 2004
- Manuscript Accepted: 5 DEC 2003
- Manuscript Received: 7 OCT 2003
- Nanorods, metal oxide;
- Properties, mechanical;
Using an X-ray surface forces apparatus (X-SFA) we have investigated the effects of normal load (stress) and shear on the ordering and tribological properties of 10 nm × 30 nm surfactant-coated BaCrO4 nanorods in isooctane, confined within submicrometer films. The film structure and corresponding friction forces were monitored as a function of time and shearing distance at different gap sizes and loads. The X-ray diffraction patterns indicate a cubic phase of nanorods coexisting with a surfactant phase that depends on the load, film thickness, shear rate, and shearing time. Atomic force microscopy and birefringence measurements performed on each surface after a shearing experiment showed ordered domains of nanorods over length scales of several tens of micrometers.