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.
Responses to NH3 (a) and calibration curve (b) of pristine SWCNT-based sensor using high-quality SWCNTs prepared through careful sonication and electrophoresis. The sensors exhibit good sensitivity to 20 ppb with a limit of detection of 3 ppb concentration of NH3. Reproduced with permission from Ref. 250. Copyright 2013, the Royal Society of Chemistry.
