doc. Ing. Radek Kalousek, Ph.D.
E-mail:   kalousek@fme.vutbr.cz  Dept.:   Institute of Physical Engineering Position:   Associate Professor Room:   A2/508

Supervised courses:

• Diagnostics of Nanostructures (TDN)
• Diagnostics of Nanostructures (TDN-A)
• General Physics I (Mechanics and Molecular Physics) (TF1)
• Proseminar in Physics I (0FP)
• Proseminar in Physics II (0FR)
• Proseminar in Physics III (0FO)
• Proseminar in Physics IV (0FQ)
• Proseminar in Physics V (0FS)
• Theoretical Mechanics and Continuum Mechanics (TMM)

Publications:

• DVOŘÁK, P.; ÉDES, Z.; KVAPIL, M.; ŠAMOŘIL, T.; LIGMAJER, F.; HRTOŇ, M.; KALOUSEK, R.; KŘÁPEK, V.; DUB, P.; SPOUSTA, J.; VARGA, P.; ŠIKOLA, T.:
  Imaging of near-field interference patterns by a-SNOM – influence of illumination wavelength and polarization state, Optical Society of America
  journal article in Web of Science
• KALOUSEK, R.; SPOUSTA, J.; ZLÁMAL, J.; DUB, P.; ŠIKOLA, T.; SHEN, Z.; SALAMON, D.; MACA, K.:
  Rapid heating of zirconia nanoparticle-powder compacts by infrared radiation heat transfer
  journal article in Web of Science
• NEUMAN, J.; NOVÁČEK, Z.; PAVERA, M.; ZLÁMAL, J.; KALOUSEK, R.; SPOUSTA, J.; DITTRICHOVÁ, L.; ŠIKOLA, T.:
  Experimental optimization of power-function-shaped drive pulse for stick-slip piezo actuators
  journal article in Web of Science
• BŘÍNEK, L.; ÉDES, Z.; DVOŘÁK, P.; NEUMAN, T.; ŠAMOŘIL, T.; KALOUSEK, R.; DUB, P.; ŠIKOLA, T.:
  Interference povrchových plazmonů v blízkém poli,
  Československý časopis pro fyziku, Vol.63, (2013), No.4, pp.234-236, ISSN 0009-0700
  journal article - other
• BŘÍNEK, L.; DVOŘÁK, P.; NEUMAN, T.; DUB, P.; KALOUSEK, R.; ŠIKOLA, T.:
  Aplikace rastrovací optické mikroskopie v blízkém poli pro plasmoniku,
  Jemná mechanika a optika, Vol.58, (2013), No.6, pp.169-171, ISSN 0447-6441
  journal article - other
• DVOŘÁK, P.; NEUMAN, T.; BŘÍNEK, L.; ŠAMOŘIL, T.; KALOUSEK, R.; DUB, P.; VARGA, P.; ŠIKOLA, T.:
  Control and Near-Field Detection of Surface Plasmon Interference Patterns,
  NANO LETTERS, Vol.13, (2013), No.6, pp.2558-2563, ISSN 1530-6984
  journal article - other
• KALOUSEK, R.; DUB, P.; BŘÍNEK, L.; ŠIKOLA, T.:
  Response of plasmonic resonant nanorods: an analytical approach to optical antennas
  journal article in Web of Science
• KOLÍBAL, M.; KALOUSEK, R.; NOVÁK, L.; VYSTAVĚL, T.; ŠIKOLA, T.:
  Controlled faceting in (110) germanium nanowire growth by switching between vapor-liquid-solid and vapor-solid-solid growth
  journal article in Web of Science
• 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
• ČECHAL, J.; MATLOCHA, T.; POLČÁK, J.; KOLÍBAL, M.; TOMANEC, O.; KALOUSEK, R.; DUB, P.; ŠIKOLA, T.:
  Characterization of oxidized gallium droplets on silicon surface: an ellipsoidal droplet shape model for angle resolved X-ray photoelectron spectroscopy analysis,
  Thin Solid Films, Vol.517, (2009), No.6, pp.1928-1934, ISSN 0040-6090
  journal article - other

List of publications at Portal BUT

Abstracts of most important papers:

• DVOŘÁK, P.; NEUMAN, T.; BŘÍNEK, L.; ŠAMOŘIL, T.; KALOUSEK, R.; DUB, P.; VARGA, P.; ŠIKOLA, T.:
  Control and Near-Field Detection of Surface Plasmon Interference Patterns,
  NANO LETTERS, Vol.13, (2013), No.6, pp.2558-2563, ISSN 1530-6984
  journal article - other
  The tailoring of electromagnetic near-field properties is the central task in the field of nanophotonics. In addition to 2D optics for optical nanocircuits, confined and enhanced electric fields are utilized in detection and sensing, photovoltaics, spatially localized spectroscopy (nanoimaging), as well as in nanolithography and nanomanipulation. For practical purposes, it is necessary to develop easy-to-use methods for controlling the electromagnetic near-field distribution. By imaging optical near-fields using a scanning near-field optical microscope, we demonstrate that surface plasmon polaritons propagating from slits along the metal dielectric interface form tunable interference patterns. We present a simple way how to control the resulting interference patterns both by variation of the angle between two slits and, for a fixed slit geometry, by a proper combination of laser beam polarization and inhomogeneous far-field illumination of the structure. Thus the modulation period of interference patterns has become adjustable and new variable patterns consisting of stripelike and dotlike motifs have been achieved, respectively.
• KALOUSEK, R.; DUB, P.; BŘÍNEK, L.; ŠIKOLA, T.:
  Response of plasmonic resonant nanorods: an analytical approach to optical antennas
  journal article in Web of Science
  An analytical model of the response of a free-electron gas within the nanorod to the incident electromagnetic wave is developed to investigate the optical antenna problem. Examining longitudinal oscillations of the free-electron gas along the antenna nanorod a simple formula for antenna resonance wavelengths proving a linear scaling is derived. Then the nanorod polarizability and scattered fields are evaluated. Particularly, the near-field amplitudes are expressed in a closed analytical form and the shift between near-field and far-field intensity peaks is deduced
• KOLÍBAL, M.; KALOUSEK, R.; NOVÁK, L.; VYSTAVĚL, T.; ŠIKOLA, T.:
  Controlled faceting in (110) germanium nanowire growth by switching between vapor-liquid-solid and vapor-solid-solid growth
  journal article in Web of Science
  We show that the hexagonal cross-section of germanium nanowires grown in the (110) direction by physical vapor deposition is a consequence of minimization of surface energy of the collector droplet. If the droplet is lost or solidified, two (001) sidewall facets are quickly overgrown and the nanowire exhibits a rhomboidal cross-section. This process can be controlled by switching between the liquid and solid state of the droplet, enabling the growth of nanowires with segments having different cross-sections. These experiments are supported by in-situ microscopic bservations and theoretical model
• ČERVENKA, J.; KALOUSEK, R.; BARTOŠÍK, M.; ŠKODA, D.; TOMANEC, O.; ŠIKOLA, T.:
  Fabrication of nanostructures on Si(100) and GaAs(1 0 0) by local anodic oxidation,
  Applied Surface Science, Vol.253, (2006), No.5, pp.2373-2378, ISSN 0169-4332
  journal article - other
  Atomic force microscopes have become useful tools not only for observing surface morphology and nanostructure topography but also for fabrication of various nanostructures itself. In this paper, the application of AFM for fabrication of nanostructures by local anodic oxidation (LAO) of Si(1 0 0) and GaAs(1 0 0) surfaces is presented. A special attention is paid to finding relations between the size of oxide nanolines (height and half-width) and operational parameters as tip-sample voltage and tip writing speed. It was demonstrated that the formation of silicon oxide lines obeys the Cabrera-Mott theory, i.e. the height of the lines grow, linearly with tip-sample voltage and is inversely proportional to logarithm of tip writing speed. As for GaAs substrates, the oxide line height grows linearly with tip-sample voltage as well but LAO exhibits a certain deviation from this theory. It is shown that the selective chemical etching of Si or GaAs ultrathin films processed by LAO makes it possible to use these films as nanolithographic masks for further nanotechnologies, e.g. fabrication of metallic nanostructures by ion-beam bombardment. The ability to control LAO and tip motion can be utilized in fabrication of complex nanostructures finding their applications in nanoelectronic devices, nanophotonics and other high-tech areas.
• KALOUSEK, R.; SCHMID, M.; HAMMERSCHMID, A.; LUNDGREN, E.; VARGA, P.:
  Slowing down adatom diffusion by an adsorbate: Co on Pt(111) with and without preadsorbed CO,
  PHYSICAL REVIEW B, Vol.68, (2003), No.23, pp.233401-233407, ISSN 1098-0121
  journal article - other
  Submonolayer deposition of cobalt on Pt(111) was studied by scanning tunneling microscopy at room temperature. It was found that deposition on a surface with adsorbed carbon monoxide (saturation coverage) leads to an island density almost ten times as high as that resulting from deposition on the clean platinum surface. Based on nucleation theory, we explain this fact as the result of a reduction of the diffusion coefficient of the Co adatoms in the presence of CO by more than two orders of magnitude. This effect is attributed to the displacement and/or rearrangement of the CO molecules necessary when Co adatoms diffuse over the "crowded" surface.