Browsing Ústav fyzikálního inženýrství by Author "Ligmajer, Filip"
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Electrodeposition of Silver Amalgam on Thin Gold Film Electrodes for Voltammetric Detection of 4Nitrophenol and DNA Labeled with Osmium TetroxideBipyridine Complex
Havranová, Pavlína; Ligmajer, Filip; Daňhel, Aleš (Wiley, 2019-10-22)Herein, electrodes made of vapordeposited thin gold films (vAuE) were used as an alternative substrate for the electrodeposition of silver amalgam particles (AgAPs), next to indium tin oxide and pyrolytic graphite, which ... -
High-Resolution Quantitative Phase Imaging of Plasmonic Metasurfaces with Sensitivity down to a Single Nanoantenna
Bouchal, Petr; Dvořák, Petr; Babocký, Jiří; Bouchal, Zdeněk; Ligmajer, Filip; Hrtoň, Martin; Křápek, Vlastimil; Faßbender, Alexander; Linden, Stefan; Chmelík, Radim; Šikola, Tomáš (American Chemical Society, 2019-01-02)Optical metasurfaces have emerged as a new generation of building blocks for multifunctional optics. Design and realization of metasurface elements place everincreasing demands on accurate assessment of phase alterations ... -
Imaging of near-field interference patterns by a-SNOM – influence of illumination wavelength and polarization state
Dvořák, Petr; Édes, Zoltán; Kvapil, Michal; Šamořil, Tomáš; Ligmajer, Filip; Hrtoň, Martin; Kalousek, Radek; Křápek, Vlastimil; Dub, Petr; Spousta, Jiří; Varga, Peter; Šikola, Tomáš (Optical Society of America, 2017-07-05)Scanning near-field optical microscopy (SNOM) in combination with interference structures is a powerful tool for imaging and analysis of surface plasmon polaritons (SPPs). However, the correct interpretation of SNOM images ... -
Independent engineering of individual plasmon modes in plasmonic dimers with conductive and capacitive coupling
Křápek, Vlastimil; Konečná, Andrea; Horák, Michal; Ligmajer, Filip; Stöger-Pollach, Michael; Hrtoň, Martin; Babocký, Jiří; Šikola, Tomáš (WALTER DE GRUYTER GMBH, 2020-03-01)We revisit plasmon modes in nanoparticle dimers with conductive or insulating junction resulting in conductive or capacitive coupling. In our study, which combines electron energy loss spectroscopy, optical spectroscopy, ... -
Limits of Babinet’s principle for solid and hollow plasmonic antennas
Horák, Michal; Křápek, Vlastimil; Hrtoň, Martin; Konečná, Andrea; Ligmajer, Filip; Stöger-Pollach, Michael; Šamořil, Tomáš; Paták, Aleš; Édes, Zoltán; Metelka, Ondřej; Babocký, Jiří; Šikola, Tomáš (Springer Nature, 2019-12-01)We present an experimental and theoretical study of Babinet’s principle of complementarity in plasmonics.We have used spatially-resolved electron energy loss spectroscopy and cathodoluminescence to investigate electromagnetic ... -
Magnetic Near Field Imaging with Electron Energy Loss Spectroscopy Based on Babinet's Principle
Horák, Michal; Křápek, Vlastimil; Hrtoň, Martin; Konečná, Andrea; Ligmajer, Filip; Stöger-Pollach, Michael; Šikola, Tomáš (Cambridge University Press, 2020-07-30)We present a study of Babinet’s principle of complementarity in plasmonics focused on measuring the magnetic near field by EELS. We have studied bow-tie and diabolo antennas and elementary disc-shaped plasmonic antennas. -
Plasmonic Properties of Silver Amalgam Nanoparticles Studied by Analytical Transmission Electron Microscopy
Horák, Michal; Ligmajer, Filip; Šikola, Tomáš; Fojta, Miroslav; Daňhel, Aleš (Cambridge University Press, 2020-07-30)We present a study of optical properties of silver amalgam and demonstrate the plasmonic nature of its nanoparticles as they support localized surface plasmon resonances (LSPR), which are self-sustained collective oscillations ... -
Single-Shot Three-Dimensional Orientation Imaging of Nanorods Using Spin to Orbital Angular Momentum Conversion
Fordey, Tomáš; Bouchal, Petr; Schovánek, Petr; Baránek, Michal; Bouchal, Zdeněk; Dvořák, Petr; Hrtoň, Martin; Rovenská, Katarína; Ligmajer, Filip; Chmelík, Radim; Šikola, Tomáš (American Chemical Society, 2021-08-25)The key information about any nanoscale system relates to the orientations and conformations of its parts. Unfortunately, these details are often hidden below the diffraction limit, and elaborate techniques must be used ...