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