deletions | additions       diff --git a/Alloying_can_be_complex_to__.tex b/Alloying_can_be_complex_to__.tex  index c11de5b..03c8599 100644  --- a/Alloying_can_be_complex_to__.tex  +++ b/Alloying_can_be_complex_to__.tex 
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Axial and radial growth are the two directions of growth taking place during nanowire growth for MOVPE and VLS. Radial growth occurs when species are absorbed on the sidewalls of the nanowire. It is possible for these species to be further absorbed towards the Au catalyst causing the toe be incorporated into the axial growth.  contribution arises from species adsorbed on the substrate or nanowire  sidewalls. These adatoms (adsorbed atoms) diffuse along the concentration gradient  towards the Au nanoparticle, where they are incorporated into axial growth.  here are two major growth modes taking place during Au-assisted nanowire growth by  MOCVD: axial growth and radial growth.  Techniques of gold free synthesis have also of course been investigated due to the issues of gold incorporation into the NW structure and cost of catalsyst. Ranging from MBE,