Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

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.

View full-text article in PMC

. 2018 Jan 16;18(1):255. doi: 10.3390/s18010255

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2018 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

Image of the sensor’s surface on the PM2.5 stage: (a) zoom $\times 20$ and (b) zoom $\times 50$ . The deposition (impaction) area corresponds to the nozzle geometry for this stage which is 4 nozzles of 0.38 mm diameter each.