Professor

BS, physics, 1965 Massachusetts Institute of Technology

PhD, plasma physics, 1970 Princeton University

Contact Info

 

 

Nanoscale materials design, synthesis, and device fabrication

Our group focuses on the following studies.
Carbon nanotubes: Recently we developed a technique whereby large quantities of nanotubes can be grown at high temperatures. These very high-quality nanotubes have been used to fabricate flat panel displays.

Photonic crystals: An exciting development has been the fabrication of a ZnO-based photonic crystal that can also lase. This work will lead to the integration of nanophotonic devices in the UV optical regime.

Random lasing phenomenon: In collaboration with colleagues in physics, we have succeeded in making the first observation of the random lasing effect in a ZnO powder layer. We have also made the world's smallest laser, a 1.5- micron ZnO particle cluster.

Quantum dots and wires: Work is in progress to synthesize and study quantum phenomena in quantum dots and nanowires of oxide-based materials.

Associations and Awards

Councillor of the Materials Research Society (MRS)

Principal editor, Journal of Materials Research

Honorary member of the materials research societies of India, Japan, and Korea

MRS Woody Award for outstanding service to the society, 1988

MRS president, 1989

Founding president, board of advisers, International Union of Materials Research Societies; chair, 1993–94

Fellow, American Vacuum Society, 1994

General secretary, International Union of Materials Research Societies, 1994–present

Publications

"Properties of multiplayer transparent conducting oxide films," E.J.J. Martin, M. Yan, M. Lane, J. Ireland, C.R. Kannewurf and R.P.H. Chang, Thin Solid Films, vol.461, pp. 309-315 (2004).

" Optically pumped ultraviolet microdisk laser on a silicon substrate," X. Liu, W. Fang, Y. Huang, X. H. Wu, S. T. Ho, H. Cao, and R. P. H. Chang, Applied Physics Letters, vol. 84, 14, pp. 2488-2490 (April 5, 2004).

" Growth mechanism and properties of ZnO nanorods synthesized by plasma-enhanced chemical vapor deposition," Xiang Liu, Xiaohua Wu, Hui Cao and R.P.H. Chang, Journal of Applied Physics, (March 15, 2004).

" Random lasing in closely packed resonant scatterers," X.H.H., A. Yamilov, N. Noh, H. Cao, E.W. Seelig and R.P.H. Chang, Journal of the Optical Society of America, B- Optical Physics, 21 (1), pp. 159-167 (Jan. 2004).

" Materials science and integration bases for fabrication of (BaxSr1-x)TiO3 thin film capacitors with layered Cu-based electrodes," W. Fan, B. Kabius, J.M. Hiller, S. Saha, J. A. Carlisle, O. Auciello, R.P.H. Chang, and R. Ramesh, Journal of Applied Physics, vol. 94, number 9, pp. 6192-6200 (November 1, 2003).