Nanocluster in a jewel case: A single, atomically precise gold nanocluster (Au25) has been incorporated inside bovine serum albumin protein. A striking increase in Au25‐BSA NIR‐II photoluminescence ...was observed as compared to Au25. The results reveal the intricate role of protein rigidification and the involvement of different excited states in the generation of NIR‐II emissions. More information can be found in the Research Article by V. Bonačić‐Koutecký, X. Le Guével, R. Antoine, and co‐workers (DOI: 10.1002/chem.202200570).
Anna Swirszczynska, in her original drama Orfeusz. Sztuka w trzech aktach (Orpheus. Play in Three Acts), a powerful and innovative post-war rewrite of the myth, first performed in 1946, transforms ...the myth and its essential features. Love, death and poetry are no longer the triad par excellence of the narrative, and Orpheus and Eurydice become fully aware of the own actions and choices. This update of the story involves a recent past which, after the war, required elaboration of mourning and grief, tending towards an ethics of awareness that frees the individual from guilt, and at the same time, opens up a path of hope with new prospects and new goals, notwithstanding fate, and overcoming fear. Keywords Swirszczynska; Orpheus; Eurydice; Myth.
Towards the need for sustainable development, remote sensing (RS) techniques in the Visible-Near Infrared–Shortwave Infrared (VNIR–SWIR, 400–2500 nm) region could assist in a more direct, ...cost-effective and rapid manner to estimate important indicators for soil monitoring purposes. Soil reflectance spectroscopy has been applied in various domains apart from laboratory conditions, e.g., sensors mounted on satellites, aircrafts and Unmanned Aerial Systems. The aim of this review is to illustrate the research made for soil organic carbon estimation, with the use of RS techniques, reporting the methodology and results of each study. It also aims to provide a comprehensive introduction in soil spectroscopy for those who are less conversant with the subject. In total, 28 journal articles were selected and further analysed. It was observed that prediction accuracy reduces from Unmanned Aerial Systems (UASs) to satellite platforms, though advances in machine learning techniques could further assist in the generation of better calibration models. There are some challenges concerning atmospheric, radiometric and geometric corrections, vegetation cover, soil moisture and roughness that still need to be addressed. The advantages and disadvantages of each approach are highlighted and future considerations are also discussed at the end.
A simple and effective 2D MXene-based carrier collector strategy is developed to improve the photoresponsivity of the CdS/PbS heterojunction photodetector in an ultra-wide band (UWB) from ultraviolet ...(UV) to short-wavelength infrared (SWIR) range, where all films were sequential hetero-integrated via a facile full-solution-processing route. The optimized devices yield significantly enhanced photoresponse in the whole detection region from 349 to 2000 nm, showing a maximum responsivity of 1.7 and 1.8 <inline-formula> <tex-math notation="LaTeX">\text{A}\cdot \text{W}^{-{1}} </tex-math></inline-formula> in the UV (405 nm) and SWIR (1650 nm) region at -2 V bias respectively, as well as a light/dark ratio of <inline-formula> <tex-math notation="LaTeX">10^{{2}} </tex-math></inline-formula> at 0 V bias under 1650 nm illumination with excellent stability. The performance is far exceeding those of the bare CdS/PbS counterpart and most other congeneric PbS-based photodetectors (PDs) previously reported. This work provides a prospective strategy to fabricate high-performance wide-spectrum photodetector based on 2D-MXene/traditional semiconductor.
Recently, television cameras operating in the near-infrared range have become increasingly widespread. The advantage of shooting in the short wave infrared range is the ability to observe objects in ...low light and difficult weather conditions. Such cameras can use hybrid sensors that consist of an infrared photocathode and an electron-sensitive matrix based on silicon in a single vacuum volume. The paper investigates the capabilities of one of the latest samples of a similar camera, created at JSC “NRI Electron”. The images of a human, water, ice, snow and other objects in the wavelength range of 0.95–1.7 microns have been analyzed. The images were taken using a television camera based on a hybrid television infrared sensor, which consists of a photocathode and a silicon charge-coupled device in proximity range to each other in a single vacuum volume. Illumination of the objects in the near-infrared range was produced by a continuous spectrum lamp with a maximum of the detected radiation at a wavelength of 1.55 μm. The authors compared the images obtained in the near-infrared range with the ones obtained in the visible region. An explanation is given for the differences between snow images and water and ice images in the near-infrared range. As an example, the difference in light transmission between the surfaces of materials for diving equipment, such as coated and open cell neoprene, is demonstrated. Due to a significant contrast shown in the near-infrared range by images of various objects on the surface of water and ice, it is possible to create an effective system for searching objects on the water. The paper discusses the advantages of the proposed visual search system compared to other systems, including passive systems and the ones operating in the MWIR and LWIR. The research outlined the prospects of using the new camera for building an effective search system for objects and people on water surfaces.
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