Experimentální biofotonika
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Bound modes in the continuum in integrated photonic LiNbO3 waveguides: are they always beneficial?
(Optica Publishing Group, 2023-01-02)We discuss several types of integrated photonic LiNbO3 waveguides supporting propagation of modes which can be classified as bound states in the continuum (BICs). The key properties leading to the existence of BICs (or ... -
Primary assessment of medicines for expected migrastatic potential with holographic incoherent quantitative phase imaging
(Optica, 2023-06-01)Solid tumor metastases cause most cancer-related deaths. The prevention of their occurrence misses suitable anti-metastases medicines newly labeled as migrastatics. The first indication of migrastatics potential is based ... -
Single-shot super-resolution quantitative phase imaging allowed by coherence gate shaping
(AIP Publishing, 2023-04-03)Biomedical and metasurface researchers repeatedly reach for quantitative phase imaging (QPI) as their primary imaging technique due to its high-throughput, label-free, quantitative nature. So far, very little progress has ... -
Coherence-encoded synthetic aperture for super-resolution quantitative phase imaging
(AIP Publishing, 2022-04-01)Quantitative phase imaging (QPI) has quickly established its role in identifying rare events and screening in biomedicine or automated image data analysis using artificial intelligence. These and many other applications ... -
Addressing cancer invasion and cell motility with quantitative light microscopy
(NATURE PORTFOLIO, 2022-01-10)The incidence of death caused by cancer has been increasing worldwide. The growth of cancer cells is not the main problem. The majority of deaths are due to invasion and metastasis, where cancer cells actively spread from ... -
Two-dimensional quantitative near-field phase imaging using square and hexagonal interference devices
(De Gruyter, 2022-08-26)We demonstrate the formation of the near field with non-trivial phase distribution using surface plasmon interference devices, and experimental quantitative imaging of that phase with near-field phase microscopy. The phase ... -
Photonic integrated circuits with bound states in the continuum: comment
(Optica Publishing Group, 2022-06-21)We point out that the electro-optic modulation of the bound state in the continuum in a low-index dielectric-loaded slab LiNbO3 waveguide reported by Yu et al., [Optica 6, 1342 (2019)] is treated incorrectly. According to ... -
Twisted Rainbow Light and Nature-Inspired Generation of Vector Vortex Beams
(Wiley-VCH GmbH, 2022-06-06)Twisted vector light beams (optical vortices) arise from a spiral modulation of the geometric (Pancharatnam-Berry) phase converting the light spin to the orbital angular momentum. The preferred geometric-phase elements ... -
Advanced Microscopical Non-Invasive Examination of the Supposed Migrastatics for Impact on In Vitro Cell Migration
(European Conference of Oncology Pharmacy, 2022-07-02)Live H1299 lung carcinoma cells in vitro were exposed to selected drugs with a presumed antimigration activity that implies antimetastatic potential and time-lapse examined with Coherence Controlled Holography Microscopy ... -
Cell type specificity of neurovascular coupling in cerebral cortex
(eLife Sciences Publications, 2016-05-31)Identification of the cellular players and molecular messengers that communicate neuronal activity to the vasculature driving cerebral hemodynamics is important for (1) the basic understanding of cerebrovascular regulation ... -
Optical simulation of quantum mechanics on the Mobius strip, Klein's bottle and other manifolds, and Talbot effect
(IOP Publishing, 2021-03-01)We analyse the evolution of the wavefunction of a quantum particle propagating on several compact manifolds, including the Klein bottle, Mobius strip and projective plane. We find analytically the stationary states and the ... -
Lens stars and Platonic lenses
(Optical Society of America, 2021-12-06)Lens stars comprise identical ideal thin lenses arranged in a regular star shape centred on the common principal point. They satisfy the edge-imaging condition of transformation optics (TO) and are thus suitable as building ... -
Phase of white light and its compatibility to the optical path
(Optical Society of America, 2021-03-12)The phase of monochromatic light directly relates to the optical path difference (OPD), but finding this connection for spectrally broadband light is challenging. Due to a missing concept of the compatibility between the ... -
Computational image enhancement of multimode fibre-based holographic endo-microscopy: harnessing the muddy modes
(Optica Publishing Group, 2021-11-08)In imaging geometries, which employ wavefront-shaping to control the light transport through a multi-mode optical fibre (MMF), this terminal hair-thin optical component acts as a minimally invasive objective lens, enabling ... -
Coherence gate manipulation for enhanced imaging through scattering media by non-ballistic light in partially coherent interferometric systems
(The Optical Society, 2021-09-15)Coherence gating is typically exploited for imaging through disordered media by least-scattered (ballistic) light. Ballistic light-based approaches produce clear images only when the proportion of ballistic to multiply ... -
Single-Shot Three-Dimensional Orientation Imaging of Nanorods Using Spin to Orbital Angular Momentum Conversion
(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 ... -
Automated interpretation of time-lapse quantitative phase image by machine learning to study cellular dynamics during epithelial-mesenchymal transition
(SPIE, 2020-08-31)Significance: Machine learning is increasingly being applied to the classification of microscopic data. In order to detect some complex and dynamic cellular processes, time-resolved live-cell imaging might be necessary. ... -
Silicon waveguides with graphene: coupling of waveguide mode to surface plasmons
(IOP Publishing, 2020-08-18)Silicon waveguides with graphene layers have been recently intensively studied for their potential as fast and low-power electro-optic modulators with small footprints. In this paper we show that in the optical wavelength ... -
High-Resolution Quantitative Phase Imaging of Plasmonic Metasurfaces with Sensitivity down to a Single Nanoantenna
(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 ... -
The adhesion of normal human dermal fibroblasts to the cyclopropylamine plasma polymers studied by holographic microscopy
(Elsevier B.V., 2016-06-15)The understanding of cell–surface interactions plays an important role for the biomaterials development and bioengineering. Although it is already known that amine groups increase the cell adhesion and proliferation, the ...
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