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) Average contact angle values of water drops residing on the PDPAEMA functionalized hierarchically structured surface following successive immersions at pH 8.5 and pH 2.5. Reproduced with permission from E. Stratakis et al., Chem. Commun. (Cambridge) 46, 4136 (2010). Copyright 2010. The Royal Society of Chemistry.
