. 2014 Nov 25;14(12):22261–22273. doi: 10.3390/s141222261
© 2014 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 license (http://creativecommons.org/licenses/by/4.0/http://creativecommons.org/licenses/by/4.0/).
Figure 8.
Experimental arrangement.