Format

Send to

Choose Destination
See comment in PubMed Commons below
Opt Lett. 2006 Oct 1;31(19):2855-7.

Resolution of 90 nm (lambda/5) in an optical transmission microscope with an annular condenser.

Author information

1
Department of Anatomy, Physiology and Pharmacology, College of Vetirenary Medicine, Auburn University, Auburn, Alabama 36849, USA.

Abstract

Resolution of 90 nm was achieved with a research microscope simply by replacing the standard bright-field condenser with a homebuilt illumination system with a cardioid annular condenser. Diffraction gratings with 100 nm width lines as well as less than 100 nm size features of different-shaped objects were clearly visible on a calibrated microscope test slide. The resolution increase results from a known narrower diffraction pattern in coherent illumination for the annular aperture compared with the circular aperture. This explanation is supported by an excellent accord of calculated and measured diffraction patterns for a 50 nm radius disk.

PMID:
16969401
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Optical Society of America
    Loading ...
    Support Center