- by Malik Nafa, Ludovic Trautmann, Ugo Arles Bottega, Tigran Mansuryan, Alessandro Tonello, Lionel Rechignat, Marc Fabert, Laetitia Magnol, VĂ©ronique Blanquet, Fabienne Baraige, Vincent Couderc, Claire Carrion, Jean-RenĂ© DuclĂšre and Claire LefortLabel-free discrimination between protein families within the same biological environment remains a significant challenge for bioimaging. We present a novel method that addresses this issue by exploiting the non-resonant background signal in multiplex-coherent anti-Stokes Raman scattering (M-CARS) spectroscopy, a signal typically regarded as noise. Our approach leverages the contrast between resonant and non-resonant contributions in hyperspectral M-CARS data to enable the distinct detection and spatial mapping of individual protein families. As a proof of concept, we apply this method to […]
- by Chunchao Xu, Haoxu Si, Zhili Zhao, Weichao Wang, Zhengqiang Wang, Guojing Zhao, Yahong Zhang and Chunhong GongBased on the engineering of impedance matching optimization, the effective combination of dielectric materials and magnetic materials is an effective way to construct high-efficiency electromagnetic wave (EMW) absorbing materials. Herein, a series of cobalt/biomass-derived carbon (Co/C) composites were successfully synthesized through chemical activation and in-situ carbonization process with peanut shells as the biomass carbon source, and cobalt nitrate as the magnetic metal source. The biomass-derived carbon effectively constructed characteristic microscopic hierarchical porous structure with the help of chemical activation, effectively […]
- by Haoyu Dai, Yao Huang, Renbing Sun, Hai Jiang, Peng Du and Laihui LuoRare-earth doped ferroelectrics have attracted much attention for their multifunctional characteristics, such as ferroelectric/piezoelectric and photoluminescent properties. A novel lead-free luminescent KNN-based ceramic 0.955K0.5Na0.5Nb0.965Sb0.035O3â0.03Bi0.5âxErxNa0.5Zr0.8Sn0.2O3â0.015 BaZrO3 (KNNS-xErâBZ, x= 0, 0.05, 0.1, 0.15, 0.2) doped with Er3+ was prepared via the conventional solid-state method. The Er3+ doping effect on the phase structure, morphology, electrical properties, and optical temperature-sensing performances of the ceramics was investigated. It is found that the Er3+ doping can maintain a high piezoelectric performance of the ceramics. Meanwhile, mechanical […]
- by Wan-Qi Liu, Qian Wang and Chun-Ming WangBaTiO3âBiMeO3 relaxor ferroelectric ceramics are promising for dielectric energy storage applications due to their high dielectric constants, large energy densities, high efficiencies, and excellent thermal stability. However, previous studies have predominantly examined macroscopic performance, leaving the microscopic mechanisms of performance enhancement unclear. This study comprehensively investigated the dielectric energy storage properties of BaTiO3 and BaTiO3âBi(Zn1/2Zr1/2)O3 (BaTiO3âBZZ) through integrated experimental and theoretical approaches to decipher the underlying microscopic physical mechanisms. The results demonstrate that the BaTiO3âBZZ exhibits significantly enhanced electrical performance […]
- by Alfredo GarcĂa-Arribas, Beatriz Sisniega, Jon GutiĂ©rrez and Roberto FernĂĄndez de LuisThis review explores the application of magnetoelastic (ME) resonance for the determination of deposited or absorbed mass. Following a comparison of its working principles with those of piezoelectric counterparts, specifically quartz crystal microbalances, the various measurement configurations developed to date are examined. Strategies to address intrinsic challenges, such as frequency drift due to magnetic relaxation, and methods to enhance measurement resolution through advanced signal fitting techniques are also presented. Two representative applications, calcium oxalate precipitation kinetics and humidity detection through […]
- by Caterina Gaudiuso, Fiorenza Fanelli, Annalisa Volpe, Antonio Ancona, Silvano Buogo and Francesco P MezzapesaThe precise manipulation of underwater acoustic waves in the ultrasonic frequency domain using lightweight materials, encompassing both bio-compatible and synthetic substrates, holds significant promise for diverse applications across medicine, defense, pharmaceutics, and industry. This study investigates the application of femtosecond laser micro-nanofabrication to enhance the acoustic performance of submerged steel metasurfaces featuring multi-scale hierarchical architectures and controlled wettability. Laser surface engineering reveals the latent potential of superimposing periodic nanostructures onto precisely defined micro-structured morphologies to achieve a notable broadband (0.5â1.5 […]
- by Bo Cao, Zhenxing Wang, Xinpeng Su, Shijia Pan and Yingsan GengThe 3D evolution of key plasma parameters in a vacuum arc strongly affects the arc interrupting capacity of vacuum circuit breakers. However, traditional 3D diagnostics methods are typically based on the optically thin assumption, neglecting spectral broadening caused by the absorption effect. This limits accurate identification of internal radiation characteristics and spatial parameter distributions of the arc, thereby hindering the deeper understanding of arc evolution mechanisms. To address this issue, we proposed a 3D absorption correction algorithm considering spectral broadening. […]
- by Khuat Thi Thu, Nguyen Tu, Do Quang Trung, Nguyen Van Du, Tran Thi Kim Nguyet, Vu Hong Dang, Nguyen Thi Hanh, Mai Xuan Dung, Hoang Quang Bac, Nguyen Van Quang, Manh Trung Tran, Nguyen Minh Hieu and Pham Thanh HuyIn this study, red-emitting Mn4+-activated CaAl4O7 phosphors were successfully synthesized using a simple solid-state reaction method. The incorporation of Mn4+ ions into the CaAl4O7 lattice was confirmed by x-ray diffraction (XRD) analysis. The synthesized phosphors displayed a red emission band peaking at 656 nm, which can be tuned by adjusting the doping concentration and annealing temperature. The highest photoluminescence intensity was observed for the CaAl4O7:0.3%Mn4+ sample annealed at 1500 °C. The optimized CaAlâOâ:Mn4+ phosphors exhibited a long lifetime of 0.827 […]
- by Nguyen A Vo-Bui, Hamideh Khanbareh, Chris R Bowen and James I RoscowFerroelectric ceramics are widely used as actuators, sensors, and energy harvesters. Their coupled electromechanical properties arise from intrinsic polarisation at the lattice scale, with a significant proportion of their bulk properties originating from the mobility of ferroelectric and ferroelastic domains. Separating the intrinsic from the extrinsic contributions to the dielectric properties using Rayleigh analysis is an important characterisation tool for optimising ferroelectric ceramics. This technique is typically conducted on monolithic ceramics with a relative density (Ïrel) greater than 0.95, where […]
- by Yujiao Qiao, Kaiyuan Zhang, Zhongdong Wang, Jiu Dun Yan and Shanika MatharageThis paper presents the development of a switching arc model based on the finite element method and its validation against experimental data from the literature. A net emission coefficient radiation model is incorporated into a flow model to simulate arc-flow interactions in an Aachen nozzle under both DC arc and current ramp down conditions. The performance of laminar and standard kâÏ” turbulence models is assessed, with the latter showing closer agreement with experimental results available in the literature. Using the […]
- by Uzair Aalam, Khushboo Singh, Amit Kumar Sharma, Ajay Mishra, Nimish Dixit, Amartya Sengupta and Aparajita BandyopadhyayOver the past several years, terahertz (THz) technology has emerged as a critical technique for non-destructive and non-contact measurements in a variety of applications. However, some of the primary challenges in translating THz technology to on-field applications have been the relatively large footprints of the existing systems, the requirements of stringent operation conditions, and the need for customized solutions for specific measurement modes. Such limitations have confined the usability of this technology to laboratory-based applications only. Therefore, in this work, […]
- by Ching-Fuh Lin, Hsin-Ting Lin, Wei-Cheng Hsu, Yao-Han Dong, Ting-Kai Chang, Han-Shi Weng, Po-Hsien Chiang and Du-Ting ChengConventional photovoltaic energy conversion primarily relies on semiconductors, but the efficiency of single-junction solar cells (SCs) is fundamentally constrained by the ShockleyâQueisser limit. Beyond this limit, alternative approaches have been proposed to utilize excess photon energy or sub-bandgap photons. Among them, metalâsemiconductor Schottky junctions offer a distinct mechanism for photoelectric conversion, where energetic (hot) carriers generated in the metal can be injected across the barrier before thermalization to the Fermi-energy level or below. This plasmonic-assisted or hot-carrier driven mechanism differs […]
- by Sri Lakshmi Narayani Prasanna, Pooja Bhaskar Madambikkattil, Shantikumar Nair and Dhamodaran SanthanagopalanHexavalent chromium is recognized as a âClass 1â carcinogen that is present in several industrial effluent. In addition to its toxicity, the water-soluble and non-biodegradable nature of hexavalent chromium (Cr(VI)) poses a severe threat to aquatic ecosystems; hence, a solution is mandatory. Among several methods for reducing Cr(VI), photocatalytic reduction is extensively explored as a sustainable and clean approach. Herein, we report the photocatalytic activity of the TiO2 nanoparticles, which is examined by varying the Cr(VI) concentration and catalyst ratio […]
- by Haixia Da, Dekang Yin, Qi Song and Huapeng YeBulk Dirac semimetals are becoming the potential candidates for the photonic spin Hall investigations because of its three dimensional bulk characteristics and controllable optical properties. Here, we realize an enhanced reflected photonic spin Hall effect in three dimensional Dirac semimetal material-based grating structure, whose magnitude reaches the theoretical upper limit under the horizontal polarization because of its large reflectance contrast under horizontal and vertical polarizations. In particular, due to the contributions of the controllability in the optical parameters of the […]
- by Audren Dorval, Luc Stafford and Ahmad HamdanElectrical discharges in liquid exhibit unique properties that render them useful in numerous fields of applications. Discharges in mixtures of immiscible liquids are of interest, as they widen the scope of in-liquid discharge applications. For instance, a discharge generated at the waterâheptane interface produces nanocarbons and an emulsion of heptane microdroplets in water. Herein, we investigate the influence of injected energy on emulsion properties by adjusting the inter-electrode gap distance (ÎŽ) in the range of 50â400 ”m and the high-voltage […]
- by Yishan Cao, Lichao Peng, Qinyong Dai and Yun LiBioinspired artificial sensory systems provide a promising approach to emulating biological perception. Among them, neuromorphic platforms based on organic electronics offer distinct advantages, including compatibility, mechanical flexibility, and low-voltage operation, thereby supporting the tight integration of sensing and computing. In recent years, advances in materials engineering, transduction mechanisms, and in-sensor computing architectures have enabled the realization of diverse sensory modalities including vision, touch, hearing, smell, and taste. This review consequently highlights representative systems that incorporate biologically inspired encoding, sensor processing, […]
- by Vladislav Khomich, Ekaterina Shershunova, Evgeniy Shakhmatov, Vadim Voevodin, Vladimir Yamshchikov and Yaroslav ZharkovIn this study, a numerical approach for modeling streamer discharge in atmospheric air was developed based on adaptive mesh reconstruction and conservative correction of logarithmic fields. The formulation employs logarithmic representation for charged species and photoionization to enhance numerical stability and ensure positivity. The adaptive meshing strategy is driven by a characteristic length field constructed from the spatial distributions of electron energy and density, enabling dynamic refinement and coarsening. A remapping procedure is introduced to transfer the solution between meshes, […]
- by Jian Qiang Liu, Huizhong Wang, Jiang Nan Fang and Meng Dong HeHow to steer the excitation of hyperbolic surface polaritons is critical in the infrared region since hyperbolic polaritons provide enhanced light-matter interactions and a low loss regime for the designing of micronano photonic devices. Two-dimensional (2D) layered nanomaterials with a relative twist angle between the in-plane crystalline axes of the two stacked layers have displayed unique electronic and optical properties in recent discoveries. Here, we numerically demonstrate a strategy to excite and manipulate surface plasmon polaritons (SPPs) in bilayer-twisted black […]
- by Wei Lu, Xin Zhou, Gengsheng Ma, Chen Liu and Jie ZhuThe application potential of low-frequency forbidden transmission bandgaps (LFTBs) in solidâfluid superlattices (SFSLs) is severely limited, as the angular ranges of LFTBs cannot satisfy diverse practical requirements. To overcome this limitation, 0â3 composites, comprising zero-dimensional solid inclusion powder (labeled as â0â) dispersed within a three-dimensional continuous solid matrix (labeled as â3â), are adopted as the solid components, to construct the so-called 0â3 SFSL with fluid. Within the Devaney theoretical framework, flexible selection of the solid materials for the â0â and […]
- by Bingkun Chen, Like Cao, Qijun Wang, Chunmin Cheng, Zijun Qi, Zhanpeng Sun, Lijie Li, Gai Wu and Wei ShenIndium Phosphide (InP) is a direct-gap semiconductor that has garnered significant attention in the field of optoelectronics, particularly in areas such as fiber optic communications and high-frequency devices. However, research on the thermal conductivity of bulk InP remains limited, with relatively few literature reports. In this work, a neuroevolution potential (NEP) is trained using a dataset constructed from ab initio molecular dynamics (AIMD), with the demonstrated high accuracy in simulating thermal transport properties. Subsequently, the thermal conductivity of zincblende-structured InP […]
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