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.
Yarn melt electrospinning: The small dotted circles located around the exit of needles nozzle and the suction wind apparatus are magnified in big dotted circles on the right side, each is pointed out by a red solid arrow to show the role of the suction wind apparatus in combining multiple fibers into one fiber. The hollow red arrows show a vertical and horizontal rotation direction of the collecting roller and rotating disk, respectively [48].
