Ing. Jakub Zlámal, Ph.D.
E-mail:   zlamal@fme.vutbr.cz  Dept.:   Institute of Physical Engineering Position:   Institute Secretary for Educational Activities Room:   A2/514 Dept.:   Institute of Physical Engineering Dept. of Physics of Surfaces and Nanostructures Position:   Assistant Professor Room:   A2/514

Supervised courses:

• Computers in Experiments (TPE)
• Numerical Simulations in Physics (TFS)
• Numerical Simulations in Physics (TFS)
• Results Dissemination (TR0)

Publications:

• HORÁK, M.; BADIN, V.; ZLÁMAL, J.:
  Accurate interpolation of 3D fields in charged particle optics
  journal article in Web of Science
• ZLÁMAL, J.; LENCOVÁ, B.:
  Influence of Saturation of Magnetic Lens Material on Fields of Deflectors and Parasitic Fields
  journal article in Scopus
• SHÁNĚL, O.; ZLÁMAL, J.; ORAL, M.:
  Calculation of the performance of magnetic lenses with limited machining precision
  journal article in Web of Science
• NEDĚLA, V.; KONVALINA, I.; LENCOVÁ, B.; ZLÁMAL, J.:
  Comparison of calculated, simulated and measured signal amplification in a variable pressure SEM,
  NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Vol.645, (2011), No.1, pp.79-83, ISSN 0168-9002
  journal article - other
• ZLÁMAL, J.; LENCOVÁ, B.:
  Development of the program EOD for design in electron and ion microscopy,
  NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Vol.645, (2011), No.1, pp.278-282, ISSN 0168-9002
  journal article - other
• ŠIKOLA, T.; KEKATPURE, R.; BARNARD, E.; WHITE, J.; VAN DORPE, P.; BŘÍNEK, L.; TOMANEC, O.; ZLÁMAL, J.; LEI, D.; SONNEFRAUD, Y.; MAIER, S.; HUMLÍČEK, J.; BRONGERSMA, M.:
  Mid-IR plasmonic antennas on silicon-rich oxinitride absorbing substrates: Nonlinear scaling of resonance wavelengths with antenna length,
  Applied Physics Letters, Vol.95, (2009), No.25, pp.253109-1-253109-3, ISSN 0003-6951
  journal article - other
• JÁNSKÝ, P.; ZLÁMAL, J.; LENCOVÁ, B.; ZOBAČ, M.; VLČEK, I.; RADLIČKA, T.:
  Numerical simulations of the thermionic electron gun for electron-beam welding and micromachining,
  Vacuum, Vol.84, (2009), No.2, pp.357-362, ISSN 0042-207X, Elsevier
  journal article - other
• SPOUSTA, J.; ZLÁMAL, J.; URBÁNEK, M.; BĚHOUNEK, T.; PLŠEK, R.; KALOUSEK, R.; ŠIKOLA, T.:
  Citlivostní analýza vyhodnocování optických parametrů tenkých vrstev (aneb jaké jsou naše šance získat věrohodný výsledek fitováním spekter odrazivosti),
  Jemná mechanika a optika, Vol.54, (2009), No.7-8, pp.225-228, ISSN 0447-6441
  journal article - other
• BARTOŠÍK, M.; ŠKODA, D.; TOMANEC, O.; KALOUSEK, R.; JÁNSKÝ, P.; ZLÁMAL, J.; SPOUSTA, J.; DUB, P.; ŠIKOLA, T.:
  Role of humidity in local anodic oxidation: A study of water condensation and electric field distribution,
  PHYSICAL REVIEW B, Vol.79, (2009), No.19, pp.195406-195412, ISSN 1098-0121
  journal article - other

List of publications at Portal BUT

Abstracts of most important papers:

• HORÁK, M.; BADIN, V.; ZLÁMAL, J.:
  Accurate interpolation of 3D fields in charged particle optics
  journal article in Web of Science
  Standard 3D interpolation polynomials often suffer from numerical errors of the calculated field and lack of node points in the 3D solution. We introduce a novel method for accurate and smooth interpolation of arbitrary electromagnetic fields in the vicinity of the optical axis valid up to 90% of the bore radius. Our method combines Fourier analysis and Gaussian wavelet interpolation and provides the axial multipole field functions and their derivatives analytically. The results are accurate and noiseless, usually up to the 5th derivative. This is very advantageous for further applications, such as accurate particle tracing, and evaluation of aberration coefficients and other optical properties. The proposed method also enables studying the strength and orientation of all multipole field components. To illustrate the capabilities of the proposed algorithm, we present three examples: a magnetic lens with a hole in the polepiece, a saturated magnetic lens with an elliptic polepiece, and an electrostatic 8-electrode multipole.
• ZLÁMAL, J.; LENCOVÁ, B.:
  Influence of Saturation of Magnetic Lens Material on Fields of Deflectors and Parasitic Fields
  journal article in Scopus
  In the connection with the calculation of parasitic fields of highly saturated lens in emerged the problem of calculation of the field of deflectors situated next to saturated magnetic materials. Up to date the deflection fields were studied only near rotationally symmetric materials with constant permeability. However, for the deflectors in saturated magnetic lenses the relative permeability is very inhomogeneous and near pole piece tips it is close to 1. We have therefore modified the computation of deflection fields in saturated lenses with EOD program to include the real value of permeability of magnetic materials. We can also display the distribution of permeability in the magnetic circuit of the lens to understand the changes in the field distribution in deflection or parasitic fields and to understand the saturation effects in magnetic lenses.
• SHÁNĚL, O.; ZLÁMAL, J.; ORAL, M.:
  Calculation of the performance of magnetic lenses with limited machining precision
  journal article in Web of Science
  To meet a required STEM resolution, the mechanical precision of the pole pieces of a magnetic lens needs to be determined. A tolerancing plugin in the EOD software is used to determine a configuration which both meets the optical specifications and is cost effective under the constraints of current manufacturing technologies together with a suitable combination of correction elements.
• NEDĚLA, V.; KONVALINA, I.; LENCOVÁ, B.; ZLÁMAL, J.:
  Comparison of calculated, simulated and measured signal amplification in a variable pressure SEM,
  NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Vol.645, (2011), No.1, pp.79-83, ISSN 0168-9002
  journal article - other
  This paper presents computed dependencies of signal amplification of detected electrons on the water vapor pressure in a variable pressure SEM using the EOD software equipped with a Monte Carlo plug-in. We analyze the amplification at selected energies of signal electrons going through a high-pressure water vapor and total signal amplification by including a realistic simulation of the secondary emission from sample. The results are compared with experimental measurements and the dependencies of published analytical models.
• ZLÁMAL, J.; LENCOVÁ, B.:
  Development of the program EOD for design in electron and ion microscopy,
  NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, Vol.645, (2011), No.1, pp.278-282, ISSN 0168-9002
  journal article - other
  The paper surveys new features of the EOD program, a complete workplace for the design of electron and ion microscopes. The extensions of the program for space charge computations, interaction with gases in the specimen chamber and misalignments are handled as plug-ins, keeping the program as a single unit. The current status of the tolerancing plug-in is described in more detail.