Research Projects

(3) Semiconducting nanowires.

Synthesis.
We developed a very low temperature (down to 270C) CVD synthesis for single crystal Ge nanowires [Wang, Angew. Chemie, 2002]. In a recently submitted work, we achieved patterning of single Au particle arrays for 1-1 growth of nanowires. That is, each particle produces a nanowire [Wang, Angew. Chemie, 2005].


Nanoelectronics.
We demonstrate Ge nanowire FETs with high k dielectrics [Appl. Phys. Lett, 2003]

Surface chemistry, passivation and assembly.

We investigated the surface chemistry of GeNWs and uncovered different surface reactivity phenomena for p- and n-type Ge [Wang, JACS, 2004].

Single-Crystalline GeNW Synthesis by CVD At ~300C

Patterning of individual Au nanoparticles for one-to-one nanowire synthesis