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Nano Lett. 2006 Jul;6(7):1384-8.

Wide-field optical imaging of surface nanostructures.

Author information

  • 1CNRS Université du Maine, UMR 6087, Le Mans, France. ausserre@univ-lemans.fr

Abstract

We present a new technique that increases the sensitivity of incoherent light optical microscopy to a point where it becomes possible to directly visualize ultrathin films (approximately nanometers) and isolated nano-objects. The technique is based on the use of nonreflecting substrate surfaces for cross-polarized reflected light microscopy. These surfaces generate a contrast enhancement of about 2 orders of magnitude, extending the application field of wide-field optical microscopy toward the nanoworld. The efficiency of the method is proven experimentally on well-characterized samples. Wide-field imaging of a nonlabeled lambda-DNA molecule is also presented.

PMID:
16834416
[PubMed - indexed for MEDLINE]
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