To synthesize ultrathin CuS nanostructures, 1.5 mmol of copper (I) chloride (CuCl) was added to a mixture of 5 ml oleylamine (OM) and 5 ml octylamine (OTA) in a three-necked flask (100 ml) at room ...

(a) ancient rock engravings in Shuwaymis, Saudi Arabia, provided insights in historic local fauna and ecosystems (photo by ...