SnO2 nanoparticles as gas sensors for measuring carbon monoxide (CO) atmospheres
<a href="//commons.wikimedia.org/w/index.php?title=User:Vinek2&amp;action=edit&amp;redlink=1" class="new" title="User:Vinek2 (page does not exist)">Vicente Neto</a>
CC BY 4.0
<span class="int-own-work" lang="en">Own work</span>