PerspectiveAPPLIED OPTICS

Nanoplasmonic sensing and detection

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Science  17 Apr 2015:
Vol. 348, Issue 6232, pp. 287-288
DOI: 10.1126/science.aaa6805

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Summary

Measuring minute amounts of chemical and biological objects in the environment and in living organisms is one of the most common and important tasks in chemistry, biology, medicine, environmental monitoring, transportation, homeland security, and defense. Although the existing methods of sensing and detection are numerous and powerful, they are not without shortcomings: insufficient sensitivity; long detection times; necessity for enzymatic, fluorescent, or radioactive labeling; high costs, and so on. Optical spectroscopic methods have the advantage of being fast, noncontact, and relatively inexpensive, but they are not necessarily sensitive enough.