Papers Published

  1. Tan, T.Y. and Na Li and Gosele, U., Is there a thermodynamic size limit of nanowires grown by the vapor-liquid-solid process?, Appl. Phys. Lett. (USA), vol. 83 no. 6 (2003), pp. 1199 - 201 [1.1599984] .
    (last updated on 2007/04/10)

    Abstract:
    For nanowires grown by the vapor-liquid-solid (VLS) process, expressions of the thermodynamically allowed minimum sizes of the wire and the liquid droplet are derived using Si nanowires (SiNW) grown from metal-silicon (M-Si) liquid as the model case. The liquid droplet minimum size is determined by a unique set of external M and Si vapor phase pressure values. The SiNW minimum size expression contains two contributions, one depending on composition of the liquid and one depending on the droplet size. These expressions do not predict a limit on the attainable VLS SiNW minimum size, implying ever smaller SiNW can be grown until reaching some growth kinetic limit which is presently unknown

    Keywords:
    drops;elemental semiconductors;nanotechnology;nanowires;semiconductor growth;silicon;