raf , ▁Er ick ▁U lin - Av ila , ▁D ent cho ▁A . ▁Gen ov , ▁Guy ▁Bart al , ▁and ▁X i ang ▁Z hang . ▁Nature ▁advance ▁online ▁publication ▁ 1 1 ▁August ▁ 2 0 0 8 . ▁Opt ical ▁Neg ative ▁Ref raction ▁in ▁Bul k ▁Met am aterial s ▁of ▁Nan ow ires ▁by ▁J ie ▁Y ao , ▁Z ha owe i ▁Li u , ▁Y ong min ▁Li u , ▁Y uan ▁Wang , ▁Ch eng ▁Sun , ▁Guy ▁Bart al , ▁Angel ica ▁M . ▁St acy , ▁and ▁X i ang ▁Z hang . ▁Science ▁ 1 5 ▁August ▁ 2 0 0 8 : ▁Vol . ▁ 3 2 1 . ▁no . ▁ 5 8 9 1 , ▁p .   9 3 0 . ▁ ▁H iding ▁a ▁real istic ▁object ▁using ▁a ▁broad band ▁ter ah ert z ▁in visibility ▁clo ak ▁by ▁F an ▁Z hou , ▁Y ong j un ▁Ba o , ▁Wei ▁C ao , ▁Col in ▁Stuart , ▁J ian qi ang ▁Gu , ▁We ili ▁Z hang , ▁and ▁Ch eng ▁Sun . ▁Scient ific ▁Re ports ▁ 1 ▁ 2 0 1 1 . ▁ ▁External ▁links ▁ ▁Van ishing ▁point ▁- ▁The ▁Gu ad ian ▁Info ▁on ▁" ste alth ▁suit " ▁ ▁In visibility ▁Clo ak ▁Cre ated ▁in ▁ 3 - D ▁- ▁BBC ▁News ▁ ▁In visibility ▁Clo ak ▁One ▁Step ▁Cl oser ▁- ▁BBC ▁News ▁