scholarly journals First principles study of the stability of MXenes under an electron beam

2021 ◽  
Vol 3 (7) ◽  
pp. 1934-1941
Author(s):  
Rina Ibragimova ◽  
Zhong-Peng Lv ◽  
Hannu-Pekka Komsa
Keyword(s):  
Electron Beam ◽  
Electron Microscope ◽  
First Principles ◽  
Electron Beams ◽  
Scanning Transmission Electron Microscope ◽  
Two Dimensional ◽  
First Principles Calculations ◽  
Transmission Electron ◽  
Scanning Transmission ◽  
The Stability

Interactions between two-dimensional MXene sheets and electron beams of a (scanning) transmission electron microscope are studied by first-principles calculations.

Cutting of 20 Å holes and lines in metal-β-aluminas

1983 ◽  
Vol 41 ◽  
pp. 100-101 ◽  
Author(s):  
M.E. Mochel ◽  
C. J. Humphreys ◽  
J. M. Mochel ◽  
J. A. Eades
Keyword(s):  
Electron Beam ◽  
Electron Microscope ◽  
Transmission Electron Microscope ◽  
Carbon Film ◽  
Scanning Transmission Electron Microscope ◽  
High Electron ◽  
Transmission Electron ◽  
Solid Substrates ◽  
Scanning Transmission ◽  
Very High

Holes 20 Å in diameter and fine lines 20 Å wide can be cut in the metal-β-aluminas using the 10 Å electron beam of the Vacuum Generators, HB5 scanning transmission electron microscope. The minimum current density required for cutting was 103 amp/cm2. Electron energies of 40,60,80,100 keV were used.This technique has higher resolution than current lithography methods and is direct, requiring no chemical development. The width of isolated lines made on solid substrates is currently about .1μm (Ahmed and McMahon, 1981) and .03μm (Jackel et al., 1980). M. Isaacson and A. Murry have carried out electron beam writing on NaCl crystals supported on a carbon film on the scale we report here.In our case uniform 20Å holes and lines can be cut through self-supporting 1000A thick slabs of sodium-β-alumina to provide very high electron contrast. Once cut, the β-aluminas are stable and will tolerate exposure to air without degradation of the electron cut patterns. They may be used directly as masks (eg. for ion implantation). We believe they could be cut on the substrate with no damage to the underlying material.

scholarly journals Atomically sculptured heart in oxide film using convergent electron beam

2021 ◽  
Vol 51 (1) ◽  
Author(s):  
Gwangyeob Lee ◽  
Seung-Hyub Baek ◽  
Hye Jung Chang
Keyword(s):  
Electron Beam ◽  
Electron Microscope ◽  
Oxide Film ◽  
Electron Gas ◽  
Scanning Transmission Electron Microscope ◽  
Perovskite Oxide ◽  
Dimensional Electron ◽  
Transmission Electron ◽  
Scanning Transmission ◽  
Dimensional Electron Gas

AbstractWe demonstrate a fabrication of an atomically controlled single-crystal heart-shaped nanostructure using a convergent electron beam in a scanning transmission electron microscope. The delicately controlled e-beam enable epitaxial crystallization of perovskite oxide LaAlO3 grown out of the relative conductive interface (i.e. 2 dimensional electron gas) between amorphous LaAlO3/crystalline SrTiO3.

Electron Beam-Induced Nano-Deposition Using a Transmission Electron Microscope

2005 ◽  
Vol 480-481 ◽  
pp. 129-132 ◽  
Author(s):  
Masayuki Shimojo ◽  
Kazutaka Mitsuishi ◽  
M. Tanaka ◽  
M. Song ◽  
Kazuo Furuya
Keyword(s):  
Electron Beam ◽  
Electron Microscope ◽  
Transmission Electron Microscope ◽  
High Resolution Electron Microscopy ◽  
Scanning Transmission Electron Microscope ◽  
Beam Position ◽  
Nano Crystalline ◽  
Transmission Electron ◽  
Resolution Electron ◽  
Scanning Transmission

Nanometre-sized structures were fabricated by electron beam-induced deposition in a scanning transmission electron microscope. A small amount of metal-organic gases, W(CO)6 and dimethyl acetylacetonato gold, were introduced near a substrate in the chamber of the microscope. The gas was decomposed by the irradiation of focused electron beams and nanometre-sized deposits containing W or Au were produced. Moving the beam position enables us to produce structures with a variety of shapes. High-resolution electron microscopy observation revealed that the structures consisted of nano-crystalline and amorphous parts.

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