The method 2, wherein said metal nanowires are selected from nanowires of {HEAD ~ a transition metal} or {TAIL ~ an alloy} of a transition metal 
The method 2 , wherein said metal nanowires are selected from nanowires of { HEAD ~ a transition metal } or { TAIL ~ an alloy } of a transition metal
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH