Open AccessPosted Content
Focused Ion Beam fabrication of Janus bimetallic cylinders acting as drift~tube Zernike phase plates
Paolo Rosi,Gian Carlo Gazzadi,Stefano Frabboni,Vincenzo Grillo,Amir H. Tavabi,Rafal E. Dunin-Borkowski,Giulio Pozzi +6 more
TLDR
In this article, focused ion beam techniques were used to realize drift tube Zernike phase plates for electrons, whose operation is based on the presence of contact potentials in Janus bimetallic cylinders, in a similar manner to the electrostatic Aharonov-Bohm effect in Bimetallic wires.Abstract:
Modern nanotechnology techniques offer new opportunities for fabricating structures and devices at the micron and sub-micron level. Here, we use focused ion beam techniques to realize drift tube Zernike phase plates for electrons, whose operation is based on the presence of contact potentials in Janus bimetallic cylinders, in a similar manner to the electrostatic Aharonov-Bohm effect in bimetallic wires. We use electron Fraunhofer interference to demonstrate that such bimetallic pillar structures introduce phase shifts that can be tuned to desired values by varying their dimensions, in particular their heights.read more
Citations
More filters
Journal Article
Design of a microfabricated, two-electrode phase-contrast element suitable for electron microscopy
TL;DR: Scanning electron microscope images confirm that mechanically robust devices with feature sizes of approximately 1 microm can be easily fabricated and demonstrate that these devices do apply a 90 degrees phase shift between the scattered and unscattered electrons, as expected.
Posted Content
Unitary Two-State Quantum Operators Realized By Quadrupole Fields in the Electron Microscope
TL;DR: A novel method for using a set of electromagnetic quadrupole fields is presented to implement arbitrary unitary operators on a two-state quantum system of electrons, expected to pave the way not only for new measurement schemes in electron microscopy and related fields but even one day for the implementation of quantum computing in the electron microscope.
Journal ArticleDOI
Design of an ultrafast pulsed ponderomotive phase plate for cryo-electron tomography
TL;DR: In this article , the shape of the phase plate was determined by incorporating the oscillatory nature of the electric field, and the authors concluded that a total laser pulse energy of 8.7 μJ is enough to induce the required π/2 phase shift for Zernike-like phase microscopy.
References
More filters
Journal ArticleDOI
Significance of Electromagnetic Potentials in the Quantum Theory
Yakir Aharonov,D. Bohm +1 more
TL;DR: In this article, it was shown that there exist effects of potentials on charged particles, even in the region where all the fields (and therefore the forces on the particles) vanish.
Journal ArticleDOI
Principles of optics : electromagnetic theory of propagation, interference and diffraction of light
Max Born,Emil Wolf,Eugene Hecht +2 more
TL;DR: The theory of interference and interferometers has been studied extensively in the field of geometrical optics, see as discussed by the authors for a survey of the basic properties of the electromagnetic field.
Journal ArticleDOI
The work function of the elements and its periodicity
TL;DR: In the data for the 63 elements, trends that occur simultaneously in both the columns and the rows of the periodic table are shown to be useful in predicting correct values and also for identifying questionable data.
Book
Transmission Electron Microscopy
Ludwig Reimer,H. Kohl +1 more
TL;DR: Particle Optics of Electrons as mentioned in this paper, wave and wave-optics of electrons, and wave and phase contrast of Electron Spectroscopy have been studied extensively in the literature.