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Akira Tonomura changed the field of fundamental physics through microscopy. Like botanist Robert Brown before him, he opened up a new world to observation. In the nineteenth century, Brown's microscope revealed Brownian motion and the cell nucleus. In the twentieth and twenty-first, Tonomura's has shown us basic principles of the quantum landscape and its applications.
Over decades, Tonomura developed the extremely stable, phase-coherent electron beams needed for good holographic imaging, a technique that enables measurement of both the intensity and the phase of transmitted electrons. This allowed many 'thought experiments' of quantum mechanics to be done in practice, and revealed details of magnetic and electric fields at the nanoscale. Tonomura used electron holography to illuminate the wave–particle duality of electrons and to measure the magnetic fields of superconductors and other quantum effects under challenging conditions, earning him heroic status among electron microscopists.
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In Memory of Akira Tonomurapp.1-6, (2014)
Perspectives of Mesoscopic Physicsno. 01 (2013): 345-370
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