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.
Force–displacement curve of dissolving microneedles (MNs) in terms of needle aspect ratio. Representative force–displacement curve of PVA-based MNs, (A) Model 4, (B) Model 5, and (C) Model 6, with actual needle heights of 570, 851, and 1133 µm, respectively, and a fixed design base diameter of 300 µm. The tests were conducted at a compression speed of 0.5 mm/min using a 5 mm diameter rod.
