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Asia Pacific Physics Newsletter

Tonomura FIRST International Symposium on Electron Microscopy and Gauge Fields

Yoshimasa A. Ono

Published Jan 1, 2013• 0 citations
Publisher

Abstract

On May 9 and May 10, 2012. Tonomura FIRST International Symposium on “Electron Microscopy and Gauge Fields” was held in downtown Tokyo hosted by Japan Science and Technology Agency together with Hitachi, Ltd., RIKEN, Ministry of Education, Culture, Sports, Science and Technology, OIST, The Asahi Shimbun, Nikkei Inc. and Nikkei Science Inc. Here FIRST stands for “Funding program for world-leading innovative research and development on science and technology”. In 2010 as principal investigator Dr. Akira Tonomura was awarded this Japanese-government-funded project aiming at developing a 1.2 MV “holography electron microscope” which is capable of observing quantum phenomena in the microscopic world. The symposium was also intended to celebrate his 70th birthday, but on May 2, just a week before the opening of the symposium, Tonomura passed away during the course of a medical treatment on pancreatic cancer. Consequently, what had been planned to be a grand meeting with many of his scientific friends from all over the world, then turned as a memorial conference.

DOI
10.1142/s2251158x13000039

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On May 9 and May 10, 2012. Tonomura FIRST International Symposium on “Electron Microscopy and Gauge Fields” was held in downtown Tokyo hosted by Japan Science and Technology Agency together with Hitachi, Ltd., RIKEN, Ministry of Education, Culture, Sports, Science and Technology, OIST, The Asahi Shimbun, Nikkei Inc. and Nikkei Science Inc. Here FIRST stands for “Funding program for world-leading innovative research and development on science and technology”. In 2010 as principal investigator Dr. Akira Tonomura was awarded this Japanese-government-funded project aiming at developing a 1.2 MV “holography electron microscope” which is capable of observing quantum phenomena in the microscopic world. The symposium was also intended to celebrate his 70th birthday, but on May 2, just a week before the opening of the symposium, Tonomura passed away during the course of a medical treatment on pancreatic cancer. Consequently, what had been planned to be a grand meeting with many of his scientific friends from all over the world, then turned as a memorial conference.
A physicist who carries out research into the fundamental aspects of quantum mechanics has been elected as a member of the prestigious Japan Academy in Tokyo. Akira Tonomura, who has worked at Hitachi for over 40 years, becomes one of just five physicists elected to the august body, two of whom, Leo Esaki and Masatoshi Koshiba, are Nobel-prize winners. Tonomura, 65, was selected for his development of electron holography, which allowed him to significantly extend the capabilities of electron microscopy and also to prove the reality of the controversial Aharonov–Bohm effect.
We would like to thank Professor H. Kosaka for stimulating discussions and continual encouragements. We appreciate very much the financial supports from the CREST project of the Japan Science and Technology Agency, from the SCOPE program of the Ministry of Internal Affairs and Communications, and from the Ministry of Education, Culture, Sports, Science and Technology, Japan. The numerical calculation in this work has been done using the facilities of the Supercomputer Center, Institute for Solid State Physics, University of Tokyo.
The 12th International Superconductive Electronics Conference (ISEC 09) was held in June 2009 in Fukuoka, Japan. The conference was very successful, with 253 participants from 17 countries. This special issue is a compendium of selected papers based on the technology presented at that meeting. ISEC has established itself as the leading meeting specializing in superconductor-based electronics and has been organized every two years since 1987. This conference provides an opportunity to present the latest developments in superconductive electronics research, and to interact among the world's experts with maximal interchange between the various topics. The main theme at ISEC 09 was developments in superconductive devices and electronics systems for advanced sensing, medical, communication and information technologies. Technical topics covered at ISEC 09 include: Digital/mixed signal processing RF electronics SQUIDs and their applications Mixers and detectors Thin film materials, junctions and novel devices. Among the 210 presentations, including plenary, oral and poster, only very high quality presentations have been selected for this special issue. Since the success of the conference depends on many invaluable contributions, I must express my appreciation to many individuals and organizations, in no particular order. I would like to thank the Japan Society for the Promotion of Science (JSPS) 146 Committee for co-organization of the conference. I owe a huge debt of gratitude to Akira Fujimaki and the rest of the program committee members for the stimulating conference program. Catherine Foley and Hideo Itozaki both played a prominent part in arranging the special issue as Guest Editors. I would also like to acknowledge the support of JSPS, The Fukuoka Convention and Visitors Bureau, The Murata Science Foundation, Tateisi Science and Technology Foundation, and Kyushu University. Finally, I would like to thank each and every participant at ISEC 09 for making a worthwhile contribution. Your work and your willingness to make this conference a success are indispensable.
Recent advancements in Transmission Electron Microscopy is built upon the remarkable achievements of the transmission electron microscope, especially, with the aberration corrected object lens, which itself is the incoherent integration of the particle electron optics and modern wave imaging technology.This involves the particle-wave duality of electrons.This book answers questions by applying the de Broglie Hypothesis and Einstein’s Theory of Relativity on the relationship between particles and electromagnetic waves to shed some light onto the electron microscopy. The first chapter explains what an electron is, which includes: (a) using the transmission electron microscope to observe the wave-particle duality of electrons, (b) the internal structure of the electron, (c) the electron as a confined electromagnetic vortices field in a corpuscle space. The following chapters, then, decipher the enigmatic relationship between the de Broglie wave of the electron and the internal electromagnetic flux circulatory motion, and analyze the spatiotemporal modification of the traveling electron corpuscle as it passes through the electron gun and magnetic lens. Based on the de Broglie wave of the traveling electron corpuscle at a certain velocity, the author defines the electron microscopy as the technology steering the velocity of the electron corpuscle assemble which encodes the information of periodic spatial grating constructed by the atoms and electromagnetic potential field, which surround the flying electrons. Then the author uses the space-time Talbot effects of the electrons to interpret the high resolution images, which was first developed by Ijima-Cowley, and expounds the contrast of the high resolution electron microscopy images as the intensity distribution of the assemble of corpuscle electron torus pulses train or beam at near field and at its far-field, which is a diffraction pattern. The final chapter of the book elaborates on how to understand the quantum electron microscopy. This book offers a comprehensive understanding what the quantum electron microscopy is, that may bring the microscopy field beyond the atom’s spatial periodicity in materials.
The article "A brief history of the double-slit experiment" (September 2002 p15; correction October p17) describes how Claus Jönsson of the University of Tübingen performed the first double-slit interference experiment with electrons in 1961. It then goes on to say: "The next milestone – an experiment in which there was just one electron in the apparatus at any one time – was reached by Akira Tonomura and co-workers at Hitachi in 1989 when they observed the build-up of the fringe pattern with a very weak electron source and an electron biprism (Am. J. Phys. 57 117–120)."