Fig. 6From: Reduced Graphene Oxide-Coated Si Nanowires for Highly Sensitive and Selective Detection of Indoor Formaldehydea Typical nitrogen adsorption isotherms of n-SiNWs and RGO@n-SiNWs. b Raman shift of n-SiNWs and RGO@n-SiNWs, and the zoomed-in Si-Si peaks as shown in insetBack to article page