Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
[(a), (b)] HRTEM images of MLG shells formed by removing metal core via chemical etching. Inset shows SAED diffraction pattern of the MLG shells. (c) Comparison of Raman spectrum with and without Cu nanoparticle (NP) core confirms the preservation of MLG shell on chemical etching.
