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.
Different nozzle channel heights to ensure correct spatial distribution of core and shell. (a) Core channel height, 250 μm; (b) shell channel height, 350 μm; (c) oil channel height, 450 μm. Yellow line represents the height of each channel. Scale bar, 100 μm.
