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Mixing aqueous dispersions of thiocyanate ion coated small ( < 3.5 nm diameter) gold nanoparticles and EDTA covered larger ( > 22 nm diameter) silver nanoparticles, results in the formation of robust gold encased silver nanoparticles; in contrast to using larger ( > 11 nm diameter) gold nanoparticles which forms chained structures. 1 C H E M . C O M M U N . , 2 0 0 2 , 3 7 8 -3 7 9doi:10.1039/b108163b pmid:12120083 fatcat:uuni27vqzrbjnmk2b5rjqx5guq