TITLE

Is there a thermodynamic size limit of nanowires grown by the vapor-liquid-solid process?

AUTHOR(S)
Tan, Teh Y.; Na Li; Gösele, Ulrich
PUB. DATE
August 2003
SOURCE
Applied Physics Letters;8/11/2003, Vol. 83 Issue 6, p1199
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
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. © 2003 American Institute of Physics.
ACCESSION #
10465380

 

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