872. Wilhelm and Else Heraeus-Seminar

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 December 8th – 10th, 2026 

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Electron holography is an interferometric technique in transmission electron microscopy (TEM) that enables quantitative reconstruction of the phase of an electron wave after interaction with a specimen. As the phase carries information on electrostatic and magnetic fields, electron holography provides access to material properties beyond conventional intensity-based imaging.

ECHO (EleCtron Holography in Optics) is the 872. Wilhelm and Else Heraeus Seminar and aims to strengthen the conceptual understanding of phase-sensitive imaging and accelerating methodological innovations by bringing together leading experts in electron holography and emerging perspectives from X-ray holography. 

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The program combines invited lectures, contributed presentations, hands-on training, live microscope sessions, and tutorials on phase reconstruction. By lowering barriers to entry and fostering cross-community exchange, ECHO supports the next generation of researchers and promotes innovation in quantitative phase imaging.

A central component is dedicated practical training, including TEM operation and data reconstruction exercises in both electron and X-ray holography. This provides direct experience with advanced electron holography instrumentation, complements the lecture program, and strengthens methodological skills, with particular emphasis on early-career researchers.

ECHO is primarily aimed at PhD students and postdoctoral researchers, who will gain exposure to state-of-the-art methods and instrumentation. Established researchers are invited to contribute perspectives on current limitations and future directions in the field.

Is open until October 8th, 2026.