Cobalt nickel bimetallic oxides (NiCo2O4) have received numerous attentions in terms of their controllable morphology, high temperature, corrosion resistance and strong electromagnetic wave (EMW) absorption capability. However, broadening the bandwidth is still a huge challenge for NiCo2O4-based absorbers. Herein, unique NiCo2O4@C core-shell microcubes with hollow structures were fabricated via facile sacrificial template strategy. The concentration oxygen vacancies morphologies...

Zeolitic imidazolate frameworks (ZIFs), a group of metal-organic (MOFs), hold promise as building blocks in electromagnetic (EM) wave absorbing/shielding materials and devices. In this contribution, we proposed facile strategy to synthesize three-dimensional ZIF-67-based hierarchical heterostructures through coordinated reaction preceramic component, poly(dimethylsilylene)diacetylene (PDSDA) with ZIF-67, followed by carbonizing the PDSDA-wrapped ZIF at high temperature. The introduction...

With the rapid advances in liquid crystal (LC) material technology over recent decades, many different practical devices have been developed and commercialized.

The rapid tracking of magnetic target holds significant importance in biomedicine, precision instrumentation, materials science, and more. diamond nitrogen vacancy ( <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">NV</i> <sup xmlns:xlink="http://www.w3.org/1999/xlink">-</sup> ) color centers exhibit field detection effect. They have shown high sensitivity, calibration-free nature, easy readout, operability at room temperature. This paper...

Imaging of electronic device surface or sub-surface electromagnetic fields under operating conditions is important for design and diagnosis. In this study, we proposed a method to characterize specific magnetic field properties devices at micron-scale using solid-state quantum sensor, namely diamond nitrogen-vacancy (NV) centers. By employing wide-field measurement technique based on NV centers, rapidly obtain the first-order distribution anomalous regions. Furthermore, approximate...

Non-destructive measurement of tiny magnetic structures widely found in precision instruments has been a challenging work. Nitrogen vacancy (NV) is solid-state quantum sensor that enables fast vector imaging by optical detection. However, NV detection results lack information about anomalies the perpendicular direction, while dispersive field blurs features source. In this paper, we combine with regularized inversion techniques, and propose dual-observation-plane method. We study...

Abstract The morphology of polymer‐dispersed liquid crystal (PDLC) has a major impact on its electro‐optic properties. PDLC was prepared by photochemical polymerization from UV‐curable monomers/crosslinking agent/initiator/LC mixture. influences crosslinking agents the system had been studied. microstructures were strongly influenced insertion polyethylene glycol (600) diacrylate (PEGDA 600) crosslinker, relatively long and flexible branch, diethylene (DEGDA) crosslinker along network bone....

Measurement of radio frequency chip microwave field is great importance for the manufacture precision instruments and development integrated circuits. In this paper, characterization surface three-dimensional (3D) distribution was realized with high-resolution based on diamond nitrogen-vacancy (NV) centers, field-image separation technique developed to suppress stray light noise caused by reflection chip. The feasibility proposed method verified characterizing planar fields at different...

Nitrogen-doped graphene quantum dots (N-GQDs) are widely used in biosensing, catalysis, and energy storage due to their excellent conductivity, high specific surface area, unique size effects, optical properties. In this paper, we successfully synthesized N-GQDs using a facile hydrothermal approach investigated the effects of different temperatures times on morphology structure N-GQDs. The results indicated that gradually increased they eventually aggregated into fragments with increasing...

The present study utilizes antibody-protein interactions to develop an LC microdroplet based biosensor for naked eye detection of SK-BR3 human breast cancer cells. herceptin antibody-conjugated microdroplets were fabricated using 4-cyano-4'-pentyl biphenyl (5CB) as the liquid crystalline phase and sodium dodecyl sulfate (SDS) surfactant. poly (styrene-b-acrylic acid) amphiphilic block copolymer (PS-b-PA) played a role modifier interfaces. 5CB molecules in have shown orientation transition...

The alkali–carbonate reaction (ACR) is a type of alkali–aggregate (AAR) that may lead to serious damage in concrete construction. There sufficient research on the effect ACR dolomite limestone; however, pure absent, and there are large number resources cannot be effectively utilized civil engineering. This study aims investigate whether occurs spoil determine freeze–thaw resistance waste slag-based (PWDSC). In this study, X-ray diffraction (XRD) lithofacies method (LM) confirmed tested...

By carefully reviewing our research and related literature, in this paper, we propose a two-stage model of Chinese firms' technological catch-up, provide asymmetry-based explanations. We argue that at the approaching stage, firms mainly focus on knowledge accumulation through frugal innovation for capturing local global low-end markets; while pole vault they creation radical high-end market. Moreover, lacking world-leading technologies but striving to achieve catch-up quickly, rely...

This article proposed a microwave (MW) detection method by utilizing the effect of dual MW on nitrogen-vacancy (NV) centers in diamond. We established theoretical model superposition and experimentally discovered unusual peak optically detected magnetic resonance (ODMR) spectrum. The frequency full-width at half-maximum peak, as well fluorescence intensity nonresonant range ODMR spectrum, were systematically analyzed to obtain amplitude measured signals. broadband was realized wide 2240–4512...

Malignant mesothelioma (MM) is an aggressive and incurable carcinoma that primarily caused by asbestos exposure. However, the current diagnostic tool for MM still under-developed. Therefore, aim of this study to explore significance a strategy combined plasma-based metabolomics with machine learning algorithms MM.

The localization and tracking of tiny magnetic source hold great potential for applications in the fields medical scientific research. However, cross-order-of-magnitude using millimeter sensor is an open problem. In this article, we proposed a precise method that breaks through limited field-of-view optical quantum imaging. position uniquely resolved by construction gradient tensor (MGT) based on vector field (2.7 <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML"...

With the data of Chinese IT listed companies from 2007 to 2010, this paper investigates relationship between company's board structure and its R&D investment. The empirical study's result shows that increasing in size independent directors, members' stock share are incentives for firm invest R&D, while relative elder members will have a negative effect firm's

Tensor imaging can provide more comprehensive information about spatial physical properties, but it is a high-dimensional quantity that difficult to observe directly. This paper proposes fast-transform magnetic tensor method based on the NV detection technique. The Euler deconvolution interprets data obtain target three-dimensional (3D) boundary information. Fast vector was performed using optical of resonance (ODMR) verify method's feasibility. complete obtained transformation data, which...

Abstract Alkali-carbonate reaction (ACR) is one of the important components alkali aggregate (AAR) in concrete structures, which may lead to a serious damage for construction and effect on durability projects adversely. Previous research has systematically investigated possibility ACR dolomitic limestone. However, there limited literature available pure dolomite specifically. Therefore, this paper aims investigates whether occur freeze-thaw resistance coarse (PDCAC) due raw materials...

Invisible microstrip defect detection is of great significance for ensuring the reliability integrated circuits and improving performance communication system. In this article, microwave fields radiated by six typically invisible defects were experimentally characterized with high accuracy based on quantum wide-field microscope, origin field contrast was theoretically analyzed. a view 1400 <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML"...

The rapid development of chip manufacturing technology has increased the demand for precise characterization techniques. technique physical field on surface a is crucial analyzing failures and diagnosing faults. In this review, latest advancements based different measurement mechanisms are analyzed summarized electromagnetic surfaces. addition, their advantages limitations discussed. Finally, prospects future presented.