Temat: Electron optics - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Electron optics column for a new MEMS-type transmission electron microscope
Autorzy:: Krysztof, M.
Grzebyk, T.
Górecka-Drzazga, A.
Adamski, K.
Dziuban, J.
Powiązania:: https://bibliotekanauki.pl/articles/201167.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: MEMS
miniature TEM
electron emission
focusing of electron beam
electron optics column
emisja elektronów
ogniskowanie
wiązka elektronów
mikrostruktura TEM
Opis:: The concept of a miniature transmission electron microscope (TEM) on chip is presented. This idea assumes manufacturing of a silicon-glass multilayer device that contains a miniature electron gun, an electron optics column integrated with a high vacuum micropump, and a sample microchamber with a detector. In this article the field emission cathode, utilizing carbon nanotubes (CNT), and an electron optics column with Einzel lens, made of silicon, are both presented. The elements are assembled with the use of a 3D printed polymer holder and tested in a vacuum chamber. Effective emission and focusing of the electron beam have been achieved. This is the first of many elements of the miniature MEMS (Micro-Electro-Mechanical System) transmission electron microscope that must be tested before the whole working system can be manufactured.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2018, 66, 2; 133-137
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Building a new software of electromagnetic lenses (CADTEL)
Autorzy:: Hasan, H.S.
Powiązania:: https://bibliotekanauki.pl/articles/411585.pdf
Data publikacji:: 2013
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Electron lenses
Objective and projector properties
Lenses aberrations
Electron optics
Charged particle optics
Software and simulation in electron lenses
Opis:: The Computer Aided designing Tools for Electromagnetic Lenses (CADTEL) is a new software as application package of programs concept to aid both users and professionals in symmetric and asymmetric electromagnetic lenses with single, double, and multipole piece in electron microscope of electron optics field. The CADTEL software has been designed to run on several computer platforms and includes two types of design procedure. The first one named, analysis procedure (which is based on trial and error) where consist of three sorts called; H1 programs for magnetic scalar potential by solving Laplace's equation [1, 2], H2 and H3 programs for magnetic vector potential by solving Poisson's equation [3, 4] in linear and non linear media respectively. While the second part, named H4 programs for the synthesis procedure (inverse design). The previous types differ by the obtaining the magnetic flux density, and poles shape, while it is analog by compute and plot the lens properties which are operating at zero, low, high, and infinite magnification conditions (operation modes). CADTEL software consist of computational and plot steps of magnetic field, equipotential surfaces, flux lines, objective and projector properties, and poles shape for proposed lens design which are appear in auto visual interfaces, that are coded in visual basic language [5].
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2013, 4; 46-55
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

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