Browsing Ústav fyzikálního inženýrství by Title
Now showing items 1-17 of 17
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Automated classification of cell morphology by coherence-controlled holographic microscopy
(SPIE, 2017-08-23)In the last few years, classification of cells by machine learning has become frequently used in biology. However, most of the approaches are based on morphometric (MO) features, which are not quantitative in terms of cell ... -
Comparative study of plasmonic antennas fabricated by electron beam and focused ion beam lithography
(Springer Nature, 2018-06-25)We present a comparative study of plasmonic antennas fabricated by electron beam lithography and direct focused ion beam milling. We have investigated optical and structural properties and chemical composition of gold ... -
Effects of microstructure and crystallography on crack path and intrinsic resistance to shear-mode fatigue crack growth
(Italian Group of Fracture, 2015-09-16)The paper focuses on the effective resistance and the near-threshold growth mechanisms in the ferritic-pearlitic and the pure pearlitic steel. The influence of microstructure on the shear-mode fatigue crack growth is divided ... -
Geometric-Phase Microscopy for Quantitative Phase Imaging of Isotropic, Birefringent and Space-Variant Polarization Samples
(Springer Nature, 2019-03-05)We present geometric-phase microscopy allowing a multipurpose quantitative phase imaging in which the ground-truth phase is restored by quantifying the phase retardance. The method uses broadband spatially incoherent light ... -
High repetition rate laser-induced breakdown spectroscopy using acousto-optically gated detection
(AIP Publishing, 2014-07-24)This contribution introduces a new type of setup for fast sample analysis using laser-induced breakdown spectroscopy (LIBS). The novel design combines a high repetition rate laser (up to 50 kHz) as excitation source and ... -
Imaging of near-field interference patterns by a-SNOM – influence of illumination wavelength and polarization state
(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 ... -
Immobilization of Platelet-Rich Plasma onto COOH Plasma-Coated PCL Nanofibers Boost Viability and Proliferation of Human Mesenchymal Stem Cells
(MDPI, 2017-12-20)The scaffolds made of polycaprolactone (PCL) are actively employed in different areas of biology and medicine, especially in tissue engineering. However, the usage of unmodified PCL is significantly restricted by the ... -
Influence of Scanning Strategies on Processing of Aluminum Alloy EN AW 2618 Using Selective Laser Melting
(MDPI, 2018-02-14)This paper deals with various selective laser melting (SLM) processing strategies for aluminum 2618 powder in order to get material densities and properties close to conventionally-produced, high-strength 2618 alloy. To ... -
Limits of Babinet’s principle for solid and hollow plasmonic antennas
(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 ... -
Multi-instrumental Analysis of Tissues of Sunflower Plants Treated with Silver(I) Ions - Plants as Bioindicators of Environmental Pollution
(MDPI, 2008-01-24)The aim of this work is to investigate sunflower plants response on stress induced by silver(I) ions. The sunflower plants were exposed to silver(I) ions (0, 0.1, 0.5, and 1 mM) for 96 h. Primarily we aimed our attention ... -
Multivariate classification of echellograms: a new perspective in Laser-Induced Breakdown Spectroscopy analysis
(Springer Nature, 2017-12-01)In this work, we proposed a new data acquisition approach that significantly improves the repetition rates of Laser-Induced Breakdown Spectroscopy (LIBS) experiments, where high-end echelle spectrometers and intensified ... -
On the connection between mode II and mode III effective thresholds in metals
(Italian Group of Fracture, 2017-07-01)Closure-free long cracks under the remote mode III loading grow in a more complicated way than those under the remote mode II. For bcc metals, a coplanar in-plane spreading of tongues driven by the local mode II loading ... -
Quantitative phase imaging unravels new insight into dynamics of mesenchymal and amoeboid cancer cell invasion
(Springer Nature, 2018-08-13)Observation and analysis of cancer cell behaviour in 3D environment is essential for full understanding of the mechanisms of cancer cell invasion. However, label-free imaging of live cells in 3D conditions is optically ... -
Research Update: Focused ion beam direct writing of magnetic patterns with controlled structural and magnetic properties
(AIP Publishing, 2018-06-01)Focused ion beam irradiation of metastable Fe78Ni22 thin films grown on Cu(100) substrates is used to create ferromagnetic, body-centered cubic patterns embedded into paramagnetic, face-centered-cubic surrounding. The ... -
Stable room-temperature ferromagnetic phase at the FeRh(100) surface
(Springer Nature, 2016-03-03)Interfaces and low dimensionality are sources of strong modifications of electronic, structural, and magnetic properties of materials. FeRh alloys are an excellent example because of the first-order phase transition taking ... -
Sunflower Plants as Bioindicators of Environmental Pollution with Lead (II) Ions
(MDPI, 2009-06-25)In this study, the influence of lead (II) ions on sunflower growth and biochemistry was investigated from various points of view. Sunflower plants were treated with 0, 10, 50, 100 and/or 500 mu M Pb-EDTA for eight days. ... -
Use of micro computed-tomography and 3D printing for reverse engineering of mouse embryo nasal capsule
(IOP Publishing, 2016-03-02)Imaging of increasingly complex cartilage in vertebrate embryos is one of the key tasks of developmental biology. This is especially important to study shape-organizing processes during initial skeletal formation and growth. ...