Office of the President

Creating Functional Nanostructures

Dr. Leonid Tsybeskov leads a research team that is investigating functional nanostructures.

Functional nanostructures for novel electron devices are the focus of the Integrated Nanostructures Laboratory, headed by Leonid Tsybeskov, associate professor of electrical and computer engineering. In one project supported by the National Science Foundation, the team is investigating links between structural and optical properties in three-dimensional nanostructures made of silicon and germanium, the most common materials for semiconductors. Visible photo luminescence from Si nanocrystals and different forms of organization in Ge nanocrystals grown on a Si substrate are recent discoveries, and Dr. Tsybeskov is exploring the feasibility of novel devices that make use of efficient light emission in these nanostructures. Hewlett-Packard and IBM are partners on the project.

The team is also continuing its work on silicon quantum dots -- molecule-sized crystals of silicon that could allow a new generation of computer chips just a few atoms across in size. Dr. Tsybeskov's group has invented a novel fabrication technique for these silicon nanostructures and demonstrated how these structures can be used in non-volatile memories and other electronic devices. Supported by the National Science Foundation and the French National Center for Scientific Research, the research is continuing with in an international collaboration with the Material Technology Laboratory at Motorola, the Institute for Electronic and Microelectronic Research in Lille, France, and the University of Rochester.