A new method of phase-contrast microscopy of microobjects using a nanofocusing lens in synchrotron radiation

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Abstract

We present the first results of a new experimental method for phase-contrast microscopy of microobjects based on synchrotron radiation and a nanofocusing lens in a conical geometry. In the experiment, a secondary radiation source is formed at the lens focus, located at a short distance from the microobject, enabling the acquisition of its magnified image. Under near-field conditions, the structure of the microobject can be relatively easily retrieved from the experimental image using the transport-of-intensity equation. The experiment was conducted at the KISI-Kurchatov synchrotron radiation source. A model weakly absorbing microobject, namely a commercially available carbon fiber of grade VMN-4, was used. The fiber dimensions and structural features were obtained with submicron spatial resolution, in agreement with the electron microscopy results.

About the authors

M. S. Folomeshkin

National Research Centre “Kurchatov Institute”

Email: folmaxim@gmail.com
123182, Moscow, Russia

V. G. Kohn

National Research Centre “Kurchatov Institute”

123182, Moscow, Russia

A. Y. Seregin

National Research Centre “Kurchatov Institute”

123182, Moscow, Russia

Y. A. Volkovsky

National Research Centre “Kurchatov Institute”

123182, Moscow, Russia

A. V. Aleksandrov

National Research Centre “Kurchatov Institute”

123182, Moscow, Russia

P. A. Prosekov

National Research Centre “Kurchatov Institute”

123182, Moscow, Russia

V. A. Yunkin

Institute of Microelectronics Technology and High-Purity Materials RAS

142432, Chernogolovka, Russia

A. A. Snigirev

Immanuel Kant Baltic Federal University

236016 Kaliningrad, Russia

Y. V. Pisarevsky

National Research Centre “Kurchatov Institute”

123182, Moscow, Russia

A. E. Blagov

National Research Centre “Kurchatov Institute”

123182, Moscow, Russia

M. V. Kovalchuk

National Research Centre “Kurchatov Institute”

123182, Moscow, Russia

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