Transition metal sulfides with hollow architecture are considered as important electrode materials in electrochemical supercapacitors owing to their high activity and surface permeability. Here, we report an effective multistep strategy for synthesizing cobalt–nickel mixed sulfide (denoted CoNiS) nanocages well-defined interior voids. First, NiCo-LDH was synthesized through ion-exchange reaction between ZIF-67 Ni2+ ions then converted CoNiS a sulfidation reaction. Depending on the...

High specific capacitance, high energy density, and power density have always been important directions for the improvement of electrode materials supercapacitors. In this paper, Co3O4 nanowire arrays with various Mn doping concentrations (Mn:Co molar ratio = 1:11, 1:5, 1:2) directly grown on nickel foam (NF) were prepared by a simple hydrothermal method annealing process. The influence morphology, structure, electrochemical behaviors was investigated. results show that partial substitution...

An X-ray grating interferometer was installed at the BL13W beamline of Shanghai Synchrotron Radiation Facility (SSRF) for biomedical imaging applications. Compared with results from conventional absorption-based micro-computed tomography, this set-up has shown much better soft tissue capability. In particular, using set-up, carotid artery and vein in a formalin-fixed mouse can be visualized situ without contrast agents, paving way future applications cancer angiography studies. The overall...

Micropancake, a flat domain with micrometer-scale lateral size and few nanometer thickness, is usually accompanied by the generation of interfacial nanobubbles at liquid/solid surfaces. Unlike nanobubbles, micropancakes are difficult to be produced efficiently, impeding further investigations their mysterious properties. Very recently, An et al. even argued that previously observed were most likely contaminate, not gas layers. Herein, reveal nature solid evidence, we presented in situ...

Abstract Antioxidation is in demand living systems, as the excessive reactive oxygen species (ROS) organisms lead to a variety of diseases. The conventional antioxidation strategies are mostly based on introduction exogenous antioxidants. However, antioxidants usually have shortcomings poor stability, non-sustainability, and potential toxicity. Here, we proposed novel strategy ultra-small nanobubbles (NBs), which gas–liquid interface was employed enrich scavenge ROS. It found that NBs (~ 10...

The use of X-ray phase-contrast microtomography for the investigation Chinese medicinal materials is advantageous its nondestructive, in situ, and three-dimensional quantitative imaging properties.The method was used to investigate microstructure ginseng, phase-retrieval also employed process experimental data. Four different ginseng samples were collected investigated; these classified according their species, production area, sample growth pattern.The internal characteristic...

AMC (automatic modulation classification) plays a vital role in spectrum monitoring and electromagnetic abnormal signal detection. Up to now, few studies have focused on the complementarity between features of different modalities importance feature fusion mechanism method. This paper proposes dual-modal convolutional neural network (DMFF-CNN) for use modal fully. DMFF-CNN uses gram angular field (GAF) image coding intelligence quotient (IQ) data combined with CNN. Firstly, original is...

Hollow nanostructures with enlarged surface areas are highly attractive electrode materials for supercapacitors. In this work, the size-dependent synthesis of hollow Co3O4 nanocubes via a facile ionic exchange reaction between Co-Fe Prussian blue analogues (PBAs) and alkali solution is reported. By adjusting concentration sodium citrate to control kinetics during nucleation growth, four different sizes PBAs were synthesized. It was also found that PBA about 140 nm can be easily converted...

Gas nanobubbles used for water treatment and recovery give rise to great concern their unique advantages of less byproducts, higher efficiency, environmental friendliness. Nanoscale zerovalent iron (nZVI), which has also been widely explored in the field remediation, can generate gas hydrogen by direct reaction with water. Whether nanoscale bubbles be produced enhance pollution removal nZVI system is one significant involved. Herein, we report observations situ generation (HNBs) from More...

Since the third generation synchrotron radiation source came into service, X-ray techniques which relate to coherent property have quickly developed and been widely used. Typically, phase contrast imaging has become a conventional method. The techniques, such as coherence scattering, diffraction imaging, photon correlation spectroscopy, received more attention shown unique superiority in field of high spatial time resolution. So quantifying is meaningful for those novel techniques. In this...

Radiation on aqueous solutions can induce water radiolysis with products of radicals, H2, H2O2, and so on, their consequent biological effects have long been interested in radiation chemistry. Unlike the decomposition by electric current that produces a significant number bubbles, gas from are normally invisible bare eyes, little is known whether nanosized bubbles be produced what dynamics upon irradiation. Here, we first presented formation nanoscale bulk irradiating pure accelerated...

Electromagnetic environment anomaly radiation source detection (EMEARD) can provide a basis for electromagnetic (EM) equipment behavior cognition and battlefield threat assessment. Existing methods mainly focus on generating EM space situations but ignore the research signal detection. In this article, connections between information geometry performance of sensor networks are explored. Nonlinear estimation based be directly used However, Riemann distance as metric function faces...

The freezing process of aqueous solutions plays a crucial role in various applications including cryopreservation, glaciers, and frozen materials. However, less research has focused on the influence nanoscale gas bubble formation or collapse water during freezing, which may significantly impact ice crystals. Herein, we report for first time that can produce nanobubbles solutions, their size number concentration could be changed by different cooling rates, i.e., would decrease as rate...

Grating based X-ray imaging technology is a coherent technique that bears tremendous potential in three-dimensional tomographic of weak absorption contrast specimens. Three kinds information including absorption, phase and scattering can be retrieved separately on single set raw projections. However, the grating with conventional phase-retrieval method using phase-stepping approach filtered back projection (FBP) reconstruction algorithm require large amounts data, so long exposure time...

Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Haohua Sun, Bingquan Kou, Yan Xi, Juncheng Qi, Jianqi Jürgen Mohr, Martin Börner, Jun Zhao, Lisa X. Xu, Tiqiao Xiao, Yujie Wang; The recent development of an X-ray grating interferometer at Shanghai Synchrotron Radiation Facility. AIP Conf. Proc. 31 July 2012; 1466 (1): 243–248....

X-ray three-dimensional (3D) imaging technology is a research hotspot in the field of imaging. However, for some special targets, mode traditional computer tomography (CT) circular trajectory prone to lack projection information, and thus affects quality CT reconstruction images, which limites application Light technology, microlens array inserted between sensor main lens camera, achieves four-dimensional (4D) light data with during including both two-dimensional (2D) directional information...

Light field image techniques attract more and attention due to the ability of achieving digital refocus measurement depth so on. But, before produce light sensor, cover glass sensor would always be removed which result in oxidation damage pixels camera. Based on excellent optical performance optic fiber plates, a new design camera was proposed avoid pixels. First, remove then couple plates above install micro lens array plates. After experiment test, results demonstrate that established...

Rational design of cathode material with kinetics matching anode is essential to achieve favorable electrochemical performance for hybrid supercapacitor. In this paper, we prepare a series Mn substituted NiCo 2 O 4 (MNCO) nanowires arrays different substitution ratios via hydrothermal-annealing strategy. We find from first-principles calculation that 3+ ions preferentially substitute Ni at the octahedral sites enables act as an n-type dopant and induce higher electron density states near...