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Journal Article

Soft X-ray holographic microscopy of chromosomes with high aspect ratio pinholes

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Grunze,  Michael
Cellular Biophysics, Max Planck Institute for Medical Research, Max Planck Society;

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https://www.sciencedirect.com/science/article/pii/S0168165610001628/pdfft?md5=fd1ad56823e33eb5e3246132ffba7476&pid=1-s2.0-S0168165610001628-main.pdf
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https://doi.org/10.1016/j.jbiotec.2010.03.017
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Citation

Bartha, R., Staier, F., Simpson, T., Mittler, S., Eisebitt, S., Grunze, M., et al. (2010). Soft X-ray holographic microscopy of chromosomes with high aspect ratio pinholes. African Journal of Biotechnology, 149(4), 238-242. doi:10.1016/j.jbiotec.2010.03.017.


Cite as: https://hdl.handle.net/21.11116/0000-0001-93B1-0
Abstract
We used digital in-line soft X-ray holography (DIXH) in the Gabor geometry to image human chromosomes. The divergent wave front was generated by diffraction of synchrotron radiation from a high aspect ratio pinhole. As under our experimental conditions the achievable resolution depends on the pinhole radius, high aspect ratio holes with diameters in the 100 nm range were prepared by focused ion beam (FIB) milling. The central maximum of the obtained Airy pattern was used to image chromosomes prepared from metaphase HeLa cells at experimental resolutions of 370±40 nm with soft X-rays at 260 eV photon energy provided by the BESSY II synchrotron radiation facility.