I-23 Phase Contrast Devices: theoretical concepts and applications

Instrumentation and Techniques

Although the design of electron-optical devices capable of producing in-focus phasecontrast in transmission electron microscopy were first proposed by Boersch more than60 years ago, the first truly successful implementation of one of these (a thin carbon filmprepared with a small hole for the unscattered beam) was realized less than 10 years ago. More recently, development of microfabricated versions of the einzel lens, as well as a number of other devices not previously conceived, has brought research on Zernike phase contrast to the forefront. Presentations are invited that cover topics such as new concepts for realizing in-focus phase ontrast, technologies for fabrication of devices with a wide spatial-frequency band-pass, control of unwanted charging or aging of devices, theoretical simulation and assessment of the research potential of phase contrast, and experimental applications in both the physical sciences and biology.

Chairpersons:

Invited Speakers:
- Wah Chiu, Baylor College of Medicine, USA
- Christian Kisielowski, Lawrence Berkeley National Laboratory, USA
- Harald Rose, Technical University Darmstadt, Germany
- Hideki Shigematsu, Yale University, USA