Fluorescence Imaging with One Nanometer Accuracy

By Paul R Selvin1, Raheem Syed1, Nahil Sobh1

1. University of Illinois at Urbana-Champaign

Fluorescence Imaging with One Nanometer Accuracy

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Published on 27 Jan 2011 All versions

doi:10.4231/D3696ZX7F cite this

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Abstract

The standard diffraction limit of light is about 250 nm, meaning that you cannot "resolve" objects closer than this distance. Despite this, we have come up with a method to measure 1.5 nm in x-y plane, with 1-500 msec, using a technique we call Fluorescence imaging with one-nanometer accuracy (FIONA) is a technique for localization a single dye, or a single group of dyes, to within approximately 1-nm accuracy. This high degree of precision is achieved using total internal reflection fluorescence microscopy, deoxygenation agents, and a high quantum yield, low-noise detector. "In Vitro and in Vivo FIONA and other Acronyms for Watching Molecular Motors Walk", Paul R. Selvin, Tyler Lougheed, Melinda Tonks Hoffman, Hyokeun Park, Hamza Balci, Benjamin H. Belehm, and Erdal Toprak , Biophysics Center and Physics Department, University of Illinois, Urbana, Illinois 61801

Cite this work

Researchers should cite this work as follows:

  • Paul R Selvin; Raheem Syed; Nahil Sobh (2014), "Fluorescence Imaging with One Nanometer Accuracy," http://nanohub.org/resources/fiona. (DOI: 10.4231/D3696ZX7F).

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Tags

  1. nano/bio
  2. Imaging
  3. fluorescence imaging