General area of interest: semiconductor process technology, device physics, and sensors
| 1974-1979 | Optical processes in MOS capacitors (Ph.D. thesis) |
| 1980-1982 | Polysilicon fuses and antifuses |
| 1982-1988 | Polysilicon junctions and polysilicon emitter transistors |
| 1982-1988 | Thin film transistors for active matrix displays |
| 1988-1990 | Thin films of high temperature superconductors |
| 1995-1997 | Surface processes during growth of boron nitride |
| 1995-1998 | Semiconductor process control |
| 1995-2001 | Wide gap semiconductors |
| 1989-2001 | Germanium-silicon-carbon alloys: growth and applications |
| 1998-2001 | MEMS-based data storage |
| 1999-2001 | Quantum dots and application |
| 2000-2005 | Biological sensing |
| 2009 | Novel ultrasonic motors |
| 2000-present | Infrastructure sensing |
| 2009-present | Surface acoustic wave devices for sensing |