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

. 2011 Jul 13;3(3):425–439. doi: 10.3390/pharmaceutics3030425

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

© 2011 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/3.0/).

PMC Copyright notice

Figure 4. — SERS of illicit drugs: (a) 1-(1-phenylcyclohexyl) piperidine (PCP), (b) methamphetamine, (c) 3,4-methylenedioxymethamphetamine (MDMA), (d) lysergic acid diethylamide (LSD), and (e) heroin. Conditions as in Figure 3(b), except at 0.1 mg/mL. Ordered to show spectral similarity. Intensities normalized and offset for clarity.