Stability and reversibility of organic molecule modifications of CVD-synthesized monolayer MoS.

We investigated the stability of monolayer MoSsamples synthesized using chemical vapor deposition and subsequently modified with organic molecules under ambient conditions. By analyzing the optical signatures of the samples using photoluminescence spectroscopy, Raman spectroscopy, and surface quality using atomic force microscopy, we observed that this modification of monolayer MoSwith organic molecules is stable and retains its optical signature over time under ambient conditions. Furthermore, we show the reversibility of the effects induced by the organic molecules, as heating the modified samples restores their original optical signatures, indicating the re-establishment of the optical properties of the pristine monolayer MoS.

Influence of Solvents and Adsorption of Organic Molecules on the Properties of CVD Synthesized 2D MoS.

We present a simple method for modification of 2D materials by drop-casting of the organic molecule in solution on the 2D material under ambient conditions. Specifically, we investigated the adsorption of 6-(4,5-Dihydro-1-imidazol-3-ium-2-yl)-2-(naphthalene-2-yl)benzothiazole methanesulfonate (L63MS) organic molecule on 2D MoS2. To better understand the effect of the organic molecule on the 2D material, we also investigated the impact of solvents alone on the materials' properties.

Unifying fast computer-generated hologram calculation and prepress for new and existing production techniques.

Directed by successfully manufacturing the computer-generated hologram (CGH) using the computer-to-film (CtF) process, we present, to the best of our knowledge, a new method for low-cost and fast hologram manufacturing. This new method allows for advances in the CtF process and manufacturing using new techniques in hologram production. These techniques include computer-to-plate, offset printing, and surface engraving utilizing the same CGH calculations and prepress.

Metal bioaccumulation in stygophilous amphipod Synurella ambulans in the hyporheic zone: The influence of environmental factors.

Given the increasing need to protect vulnerable freshwater ecosystems and make them more resilient to human use and climate change, biomonitoring of the hyporheic zone (HZ), which plays a critical role in pollution attenuation, is essential. The aim of the present study was to assess the potential of the amphipod species Synurella ambulans as a bioindicator of metal contamination in the HZ of the Sava River (Croatia). Amphipods were collected during the four seasons at two sampling sites (average sampling depth 55 cm) differing in type (agricultural and urban) and intensity (diffuse and point source contamination) of anthropogenic influence, one located upstream (Medsave), and the other downstream (Jarun) of the wastewater treatment plant discharge.

Direct Identification of Urinary Tract Pathogens by MALDI-TOF/TOF Analysis and De Novo Peptide Sequencing.

For mass spectrometry-based diagnostics of microorganisms, matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) is currently routinely used to identify urinary tract pathogens. However, it requires a lengthy culture step for accurate pathogen identification, and is limited by a relatively small number of available species in peptide spectral libraries (≤3329). Here, we propose a method for pathogen identification that overcomes the above limitations, and utilizes the MALDI-TOF/TOF MS instrument.

Computer-generated hologram manipulation and fast production with a focus on security application.

Motivated by the successful printing of a computer-generated hologram using the computer-to-film (CtF) graphic process, we present a further refined technique with increased resolution, applicable in security. The CtF process offers low cost and fast production while persevering high resolution, and it can make every hologram unique. In this paper, we present the improvement of the printing method, with several software modifications and the implementation of security features at different levels of production.

On the image inpainting problem from the viewpoint of a nonlocal Cahn-Hilliard type equation.

Motivated by the fact that the fractional Laplacean generates a wider choice of the interpolation curves than the Laplacean or bi-Laplacean, we propose a new non-local partial differential equation inspired by the Cahn-Hilliard model for recovering damaged parts of an image. We also note that our model is linear and that the computational costs are lower than those for the standard Cahn-Hilliard equation, while the inpainting results remain of high quality. We develop a numerical scheme for solving the resulting equations and provide an example of inpainting showing the potential of our method.

Utilizing standard high-resolution graphic computer-to-film process for computer-generated hologram printing.

The computer-generated hologram (CGH) has wide use in many fields but often comes at a high cost due to complex proprietary equipment. For this research, we developed a new robust computational method, and applied and tested common computer-to-film (CtF) technology to create affordable and high-resolution prints of CGHs that can be used primarily in security printing. The proposed method also allows for quick authentication with no need for a complex optical setup, while offering high-level security analysis through a simple yet robust system.

Analysis of Fatty Acid Esters of Hydroxyl Fatty Acid in Selected Plant Food.

Metabolic syndrome, characterized by obesity, low-grade inflammation, insulin resistance, hyperglycemia, dyslipidemia and hypertension, is a major risk factor for cardiovascular mortality. Preclinical studies on recently discovered classes of lipids - fatty acid esters of hydroxy fatty acids (FAHFA) have revealed their anti-inflammatory and insulin-sensitizing potential. The FAHFA levels are significantly decreased in insulin-resistant individuals, their application exhibited anti-inflammatory effects and restoring the glucose-insulin homeostasis.