X-ray holographic microscopy by means of photoresist recording and atomic-force microscope readout

Steve Lindaas, Malcolm Howells, Chris Jacobsen, Alex Kalinovsky

Research output: Contribution to journalArticlepeer-review

53 Scopus citations

Abstract

We have reconstructed in-line (or Gabor) x-ray holograms at 40–50-nm resolution from a complex biological specimen. The holograms were recorded as a relief pattern on photoresist with use of 1.89-nm, soft x rays from the X1A undulator beam line at the National Synchrotron Light Source at Brookhaven National Laboratory. We have improved the resolution and the fidelity and simplified the experiment compared with earlier work by employing a special atomic-force microscope to examine and digitize the holograms. Following digitization the holograms were reconstructed numerically, allowing both the absorptive and phase-shifting properties of the reconstructed object to be mapped. A comparison of the reconstructed images with images obtained from visible light and transmission electron microscopes has been made to confirm the validity of the x-ray holographic technique. The method offers promise as a technique for soft-x-ray microscopy and diffraction tomography of dry and frozen hydrated specimens and for microscopy with pulsed x-ray sources.

Original languageEnglish (US)
Pages (from-to)1788-1800
Number of pages13
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Volume13
Issue number9
DOIs
StatePublished - Jan 1 1996

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Computer Vision and Pattern Recognition

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