Results 31 to 40 of about 39,936 (332)
Meta-optics empowered vector visual cryptography for high security and rapid decryption
Nature Communications, 2023 Usual methods for optical encryption suffer from a tradeoff between the level of security and the complexity of operation given by multiple optical measurements or digital postprocessing. Here, the authors show a multi-d.o.f.
Fei Zhang +9 more
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Design rules for combined label-free and fluorescence Bloch surface wave biosensors [PDF]
, 2017 We report on the fabrication and physical characterization of optical biosensors implementing simultaneous label-free and fluorescence detection and taking advantage of the excitation of Bloch surface waves at a photonic crystal’s truncation interface ...
Christoph, Wächter +5 more
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Optimization of Pinned Photodiode Pixels for High-Speed Time of Flight Applications
IEEE Journal of the Electron Devices Society, 2018 We discuss optimizations of pinned photodiode (PPD) pixels for indirect time of flight sensors. We focus on the transfer-gate and dumping gate regions optimization, on the PPD dimension and shape to assure fast lateral charge transfer and on the ...
Fabio Acerbi +7 more
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Light: Science & Applications, 2021 With inherent orthogonality, both the spin angular momentum (SAM) and orbital angular momentum (OAM) of photons have been utilized to expand the dimensions of quantum information, optical communications, and information processing, wherein simultaneous ...
Yinghui Guo +8 more
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Nanoscale Research Letters, 2018 Self-assembled organic-inorganic CH3NH3PbI3 perovskite microwires (MWs) upon humidity exposure along several weeks were investigated by photoluminescence (PL) spectroscopy, Raman spectroscopy, and X-ray diffraction (XRD). We show that, in addition to the
Rubén Segovia +5 more
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Polarization singularities from unfolding an optical vortex through a birefringent crystal [PDF]
, 2004 Optical vortices (nodal lines and phase singularities) are the generic singularities of scalar optics but are unstable in vector optics. We investigate experimentally and theoretically the unfolding of a uniformly polarized optical vortex beam on ...
Flossmann, Florian +3 more
core +4 more sources
What did the students expect from TPU and what they have got: comparative study [PDF]
, 2010 Backlight units are the most relevant element in display with respect to the energy consumption. In addition, the quality of backlight units in terms of brightness, homogenous light distribution, and the angle of light radiation, dramatically influence ...
Baum, C. +4 more
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Atomic layer deposition for hafnium oxide-based meta-optics in the ultraviolet spectral range [PDF]
EPJ Web of ConferencesHafnium oxide (HfO₂) is of increasing interest in both microelectronics and photonics due to its favorable optical and dielectric properties. In particular, its high refractive index, wide bandgap, and chemical stability render it attractive for optical ...
Siefke Thomas +5 more
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Multi-Wavelength Super-Resolution Imaging by Structured Illumination of Bloch Surface Waves
IEEE Photonics Journal, 2022 Multi-wavelength imaging ability is important for bio-imaging, to obtain multi-modal information of biological activities. We propose a multi-wavelength super-resolution imaging method, employing the Bloch surface waves (BSWs) supported by one ...
Zhenyan Li +8 more
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Flatness optimization of micro-injection moulded parts: The case of a PMMA microfluidic component [PDF]
, 2011 Micro-injection moulding (µ-IM) has attracted a lot of interest because of its potential for the production of low-cost, miniaturized parts in high-volume.
Alcock, Jeffrey R. +5 more
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