Figure 1.
Geometry of the 8-cm-diameter electrode with 52 needles with distance = 1 cm, 13 needles with distance = 2 cm, and the triangle substructure.
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.