A monolithically integrated near-infrared imager with crystallization- and oxidation-modulated tin-lead perovskites.

The fast crystallization and facile oxidation of Sn of tin-lead (Sn-Pb) perovskites are the biggest challenges for their applications in high-performance near-infrared (NIR) photodetectors and imagers. Here, we introduce a multifunctional diphenyl sulfoxide (DPSO) molecule into perovskite precursor ink to response these issues by revealing its strong binding interactions with the precursor species. The regulated perovskite film exhibits a dense morphology, reduced defect density and prolonged carrier diffusion length.

Isolation of largemouth bass virus (LMBV) and dominant immunogenic epitope screening of the major capsid protein of LMBV.

Increasing disease challenges represent a critical bottleneck for the sustainable development of largemouth bass farming. Vaccination can effectively protect fish from pathogens, with dominant immunogenic epitope identification being essential for vaccine development. This research documents a case of largemouth bass virus (LMBV) infection and identifies the dominant immunogenic epitope of the major capsid protein of LMBV (LMBV-MCP).

10-km passive drone detection using broadband quantum compressed sensing imaging.

Remote passive drone detection in the presence of strong background noise is challenging, since they are point objects and cannot be recognized by their contour detection. In this study, we introduce a new passive single-photon dynamic imaging method using quantum compressed sensing. This method utilizes the inherent randomness of photon radiation and detection to construct a compressive imaging system.

A Comprehensive Investigation of Potential Bacterial Pathogens in Largemouth Bass ().

In the study, a comprehensive investigation on potential bacterial pathogens affecting largemouth bass () was performed. Monthly surveys were conducted from April to October 2024. Diseased largemouth bass exhibited diverse clinical symptoms, such as rot of gill and fin, ulcers on body surface, and petechial hemorrhages in liver.

Noise-tolerance detection of high-frequency dynamic targets with mid-infrared thermal radiation via intra-cavity enhanced upconversion.

Broadband and highly sensitive mid-infrared (MIR) light detection and imaging play a crucial role in environmental monitoring, gas detection, biomedical applications, and national defense security. However, the detection of high-frequency, long-distance dynamic targets with MIR thermal emission is still limited by the long response time of commercial detectors and intense environmental noise. Here, we demonstrate a noise-tolerance intra-cavity enhanced broadband MIR upconversion system by counting the upconverted lights through a high-sensitivity single photon detector.

Efficient quantum random number generation via simultaneously detecting photons in temporal and spatial dimensions.

Quantum random number generators (QRNGs) produce true random numbers with significant applications in quantum communication and numerical computation, where high-rate random number generation is critical. Photon detection-based quantum random-number generation methods have been widely studied. However, the generation rate is constrained by the count rate of single-photon detectors.

Highly Crystalline and Robust Donor-Acceptor Type Covalent Organic Frameworks for Long-life Sodium-Ion Battery Cathodes.

Covalent organic frameworks (COFs) hold great potential in sodium-ion battery cathodes. However, most reported COF-based electrodes show unsatisfying capacity and rate performance due to their limited redox site density, low crystallinity, and poor conductivity. Herein, a highly crystalline and robust donor-acceptor type COF with abundant redox active sites is developed by the polymerization of donor unit benzo[1,2-b:3,4-b″:5,6-b″']trithiophene-2,5,8-tricarbaldehyde) (BTT) and acceptor unit s-indacene-1,3,5,7(2H,6H)-tetrone (ICTO) (denoted as BTT-ICTO) for cathodic Na storage.

Impact of Hexagonal Boron Nitride Encapsulation on the Photophysical Dynamics of MAPbI Perovskite Crystals.

Metal halide perovskites are known to suffer from instability due to their high sensitivity to external stimuli. Although encapsulation can considerably improve their stability, the impact of encapsulation on the intrinsic photophysical properties of perovskites remains unclear. Here, we investigate the effect of hexagonal boron nitride (hBN) encapsulation on the photoluminescence (PL) dynamics of MAPbI perovskite crystals at the individual crystal level.

Ultrafast Exciton Formation in Perovskite Quantum Rods.

Investigating exciton formation in semiconductor materials is essential for efficient light-to-energy conversion applications. Exciton formation has been extensively studied in two-dimensional materials but is rarely observed in single quantum systems. Here, we construct one-dimensional CsPbBr quantum rods (QRs) with two confined dimensions and one unconfined dimension.

Size Uniformity of CsPbBr Perovskite Quantum Dots via Manganese-Doping.

The achievement of size uniformity and monodispersity in perovskite quantum dots (QDs) requires the implementation of precise temperature control and the establishment of optimal reaction conditions. Nevertheless, the accurate control of a range of reaction variables represents a considerable challenge. This study addresses the aforementioned challenge by employing manganese (Mn) doping to achieve size uniformity in CsPbBr perovskite QDs without the necessity for the precise control of the reaction conditions.

Size-dependent photoluminescence blinking mechanisms and volume scaling of biexciton Auger recombination in single CsPbI3 perovskite quantum dots.

Determining the correlation between the size of a single quantum dot (QD) and its photoluminescence (PL) properties is a challenging task. In the study, we determine the size of each QD by measuring its absorption cross section, which allows for accurate investigation of size-dependent PL blinking mechanisms and volume scaling of the biexciton Auger recombination at the single-particle level. A significant correlation between the blinking mechanism and QD size is observed under low excitation conditions.

Conversion of Photoluminescence Blinking Types in Single Colloidal Quantum Dots.

Almost all colloidal quantum dots (QDs) exhibit undesired photoluminescence (PL) blinking, which poses a significant obstacle to their use in numerous luminescence applications. An in-depth study of the blinking behavior, along with the associated mechanisms, can provide critical opportunities for fabricating high-quality QDs for diverse applications. Here the blinking of a large series of colloidal QDs is investigated with different surface ligands, particle sizes, shell thicknesses, and compositions.

[Mitochondrial genome sequence characteristics and phylogenetic analysis of ].

that only distributes in the Ili River basin in Xinjiang is one of the rare and endangered species of schizothorax in China, thus has high scientific and economic values. In this study, the complete mitochondrial genome sequence of . with a length of 16 580 bp was obtained by high-throughput sequencing.

High frequency near-infrared up-conversion single-photon imaging based on the quantum compressed sensing.

Infrared up-conversion single-photon imaging has potential applications in remote sensing, biological imaging, and night vision imaging. However, the used photon counting technology has the problem of long integration time and sensitivity to background photons, which limit its application in real-world scenarios. In this paper, a novel passive up-conversion single-photon imaging method is proposed, in which the high frequency scintillation information of a near infrared target is captured by using the quantum compressed sensing.

The role of atmospheric conditions in the nonradiative recombination in individual CHNHPbI perovskite crystals.

Organic-inorganic metal halide perovskites have been emerging as potential candidates for lightweight photovoltaic applications in space. However, fundamental physics concerning the effect of atmosphere on the radiative and nonradiative recombination in perovskites remains far from well understood. Here, we investigate the creation and annihilation of nonradiative recombination centers in individual CHNHPbI perovskite crystals by controlling the atmospheric conditions.

Optical interference effect in the hybrid quantum dots/two-dimensional materials: photoluminescence enhancement and modulation.

The optical interference effect originating from the multiple reflections between the two-dimensional (2D) materials and the substrates has been used to dramatically enhance their Raman signal. However, this effect in the hybrid structures of colloidal quantum dots (QD) coupled to 2D materials is always overlooked. Here we theoretically prove that the photoluminescence (PL) intensities of the QD films in the QD-2D hybrid structures can be strongly enhanced and modulated by the optical interference effect between QD and 2D interfaces, breaking the inherent standpoint that PL intensities of the QD films are always prominently quenched in these hybrid structures.