Visual turn as an interpretive model of stage synthesis of arts in the culture of the XX–XXI century

Visual turn as an interpretive model of stage synthesis of arts in the culture of the XX–XXI century Purpose of the Article. The research is related to the definition of visual and virtual dimensions of the interpretation of fashion activity as a certain communicative scene. The research methodology is to apply a retrospective analysis of visual patterns in the stage space of everyday culture. The scientific novelty of the work is that the scene is perceived by the recipient as an optical phenomenon, has a wide space in which the actor of action or event performs certain communicative acts verbally and optically. The components of this synthesis plastically, gesturally, verbally-dramatically and optically-visually present a whole selection of arts that form a stage synthesis. Drama is verbalized as a plastic behavior, where the action, movements determine the high space of mise-en-scène of the tank, which testifies to both the expressive arts known since ancient Greek chorea and the visual-optical patterns. Thus, in the context of visual rotation, ocular centrism is actualized - trust in the picture. Conclusions. It should be noted that there is an artistic critique of the media, producers, galleries, magazines, that is, a space of unification and adequate representation of various art phenomena is formed. It is not the artists themselves, the actors of the big stage, the producers of the great culture of everyday life who live a full life, but those who create art events, local scenes of the presentation. Visual research tends to eclecticism, which turns into a polymorphic set of discourses, which indicates that you need to find a comfort zone, certain attractions of everyday culture. Without them, the realization of a modern art product is no longer possible. Advertising management, imageology are presented in society as an indirect reality, similar to virtual technology. Imagination as a video presentation becomes a problem of interpretation, a problem of vision. Visual culture tries to rehabilitate the image and determine its meaning without a name, without a name. Such a culture without a name leads to the fact that researchers are beginning to determine only what has a name. Art history describes the relationships between objects, chronological order, movement, formal preferences, and iconographic data. Needless to say, the work of art in this case remains an individual creation, a special source of life, and a social text. The culture of everyday life in the context of visual rotation is simultaneously a text, an image, a stage artifact, a pattern, and a flash image. Key words: culture, culture of everyday life, stage synthesis of culture of everyday life, image, visual turn.

Settling dynamics of nanoparticles in simple and biological media

The biological response of organisms exposed to nanoparticles is often studied in vitro using adherent monolayers of cultured cells. In order to derive accurate concentration–response relationships, it is important to determine the local concentration of nanoparticles to which the cells are actually exposed rather than the nominal concentration of nanoparticles in the cell culture medium. In this study, the sedimentation–diffusion process of different sized and charged gold nanoparticles has been investigated in vitro by evaluating their settling dynamics and by developing a theoretical model to predict the concentration depth profile of nanoparticles in solution over time. Experiments were carried out in water and in cell culture media at a range of controlled temperatures. The optical phenomenon of caustics was exploited to track nanoparticles in real time in a conventional optical microscope without any requirement for fluorescent labelling that potentially affects the dynamics of the nanoparticles. The results obtained demonstrate that size, temperature and the stability of the nanoparticles play a pivotal role in regulating the settling dynamics of nanoparticles. For gold nanoparticles larger than 60 nm in diameter, the initial nominal concentration did not accurately represent the concentration of nanoparticles local to the cells. Finally, the theoretical model proposed accurately described the settling dynamics of the nanoparticles and thus represents a promising tool to support the design of in vitro experiments and the study of concentration–response relationships.

Rare-Earth Doped Upconverting Nanophosphors for Light-Mediated Biocidal Surface Development

Since the earliest civilization, diminishing the occurrence and subsequent transmission of pathogenic microorganisms in the indoor environment has been one of the utmost priorities to the human society. In line with intensive research towards the surface disinfection through the use of several photocatalytic processes, rare-earth doped upconverting nanophosphors (UCNPs) have recently drawn a great attention on the basis of their purely optical phenomenon of directly converting visible light into germicidal ultraviolet radiation (namely ultraviolet C) via the unique photoluminescence process namely ‘upconversion’. The efficient upconversion of abundant visible light into ultraviolet photons in the germicidal range and, consequently, effective biocidal action while coated onto surfaces enable UCNPs as a potential candidate to be used for inhibiting germ spreading through the inanimate surface in public places, hospitals and so forth.

Lighting up Electrochemiluminescent Inactive Dyes by Intramolecular Resonance Energy Transfer

By virtue of near-zero optical background and photobleaching, electrochemiluminescence (ECL), an optical phenomenon excited by electrochemical reactions, has drawn extensive attention in both fundamental studies and wide applications especially of ultrasensitive bioassay. Developing diverse ECL emitters is crucial to unlock their multiformity and performances, but remains a formidable challenge, due to the rigorous requirements for ECL. Herein, we report a general intramolecular ECL resonance energy transfer (iECL-RET) strategy to light up ECL-inactive dyes in aqueous solutions using an existing high-performance ECL initiators. As a proof-of-concept, a series of luminol donor-dye acceptor based ECL emitters with near unity RET efficiency and coarse/fine tunable emission wavelengths were demonstrated. Different to previous exploitation of new molecule single-handedly to address all the prerequisites of ECL, each unit in the proposed ECL ensemble performed maximally its own functions. The iECL-RET strategy would greatly expand the family members of ECL emitters for more demanding future applications.

High-Q microresonators on 4H-silicon-carbide-on-insulator platform for nonlinear photonics

The realization of high-quality (Q) resonators regardless of the underpinning material platforms has been a ceaseless pursuit, because the high-Q resonators provide an extreme environment for confining light to enable observations of many nonlinear optical phenomenon with high efficiencies. Here, photonic microresonators with a mean Q factor of 6.75 × 106 were demonstrated on a 4H-silicon-carbide-on-insulator (4H-SiCOI) platform, as determined by a statistical analysis of tens of resonances. Using these devices, broadband frequency conversions, including second-, third-, and fourth-harmonic generations have been observed. Cascaded Raman lasing has also been demonstrated in our SiC microresonator for the first time, to the best of our knowledge. Meanwhile, by engineering the dispersion properties of the SiC microresonator, we have achieved broadband Kerr frequency combs covering from 1300 to 1700 nm. Our demonstration represents a significant milestone in the development of SiC photonic integrated devices.

Investigation of the Thermally Generated Au and Ag Nanoislands for SERS and LSPR Applications

Gold and silver nanoparticles are widely used as signal amplification elements in various electrochemical and optical sensor applications. Although these NPs can be synthesized in several ways, perhaps one of the simplest methods of their preparation is the thermal annealing of pre-deposited thin metal films on glass. With this method, the parameters of the annealing process (time and temperature) and the pre-deposited thin film thickness influence and define the resulting size and distribution of the NPs on the surface. LSPR is a very sensitive optical phenomenon and can be utilized for a large variety of sensing purposes. SERS is an analytical method that can significantly increase the yield of the Raman scattering of target molecules adsorbed on the surface of metallic nanoparticles. In this work, the performance of Au/Ag nanoislands was investigated for SERS and LSPR applications. The nanoislands were generated by thermally annealing thin layers of silver and gold, which were previously sputtered onto glass surfaces. The sensitivity of LSPR and SERS-based devices were strongly dependent on the used material and the size and geometry of the metallic nanoparticles. By controlling these parameters, the plasmon absorption band can be tuned and the sensitivity can be optimized. This work was supported by the GINOP-2.3.2-15-2016-00041 project. ICs is grateful for the support of the János Bólyai Research Scholarship of the Hungarian Academy of Sciences.

Observation of Nonlinear Optical Phenomenon in Vacuum by Four Waves Mixing

In the present paper, we studied possibility of observation and detection of nonlinear optical effects in free space. We studied four wave mixing process in which signal is generated opposite to the direction of probe beam. We observed that large number of photons are generated in signal beam, which should be detectable.

An optical flash on Venus detected by the AKATSUKI spacecraft

Detection of lightning discharges on Venus has been attempted using both radio waves and optical methods for over 40 years. For optical observations, claims of lightning detection were controversial due to the lack of time resolution of optical emissions that is needed to separate lightning from artificial or natural noise. Here we show the first high-time-resolution light curve of a transient optical phenomenon observed by the Lightning and Airglow Camera (LAC), a dedicated instrument on the Venus orbiter Akatsuki. The observed transient was 10 times brighter than a typical terrestrial lightning flash and had a duration of a few hundred milliseconds, whereas that of typical Earth lightning is only a millisecond. These characteristics are not typical, but are well within the variability of Earth lightning. An origin as a bolide flare cannot be excluded, but considering the expected occurrence frequency of meteoroids at Venus, is improbable. The low flash rate and long duration determined by the Akatsuki observation are not inconsistent with non-detection of lightning radio waves by the Cassini spacecraft.