A5084601205- Nanoporous metals and alloys
- Supercapacitor Materials and Fabrication
- Power Systems Fault Detection
- Advanced Photocatalysis Techniques
- Electrocatalysts for Energy Conversion
- Nanocluster Synthesis and Applications
- Perovskite Materials and Applications
- Anodic Oxide Films and Nanostructures
- Gas Sensing Nanomaterials and Sensors
- Advanced battery technologies research
- Nanomaterials for catalytic reactions
- Advancements in Battery Materials
- Chromatography in Natural Products
- High-Voltage Power Transmission Systems
- Advanced Electron Microscopy Techniques and Applications
- HVDC Systems and Fault Protection
- Advanced Polymer Synthesis and Characterization
- Natural product bioactivities and synthesis
- Advanced X-ray Imaging Techniques
- Plant-based Medicinal Research
- Nanoplatforms for cancer theranostics
- Innovative Microfluidic and Catalytic Techniques Innovation
- Nanoparticle-Based Drug Delivery
- Pickering emulsions and particle stabilization
- Dendrimers and Hyperbranched Polymers
Hamburg University of Technology
2017-2024
Chongqing Medical University
2019-2024
Helmholtz-Zentrum Hereon
2017-2024
Universität Hamburg
2017-2024
Hamburg Centre for Ultrafast Imaging
2024
Deutsches Elektronen-Synchrotron DESY
2024
Norsk Hydro (Germany)
2024
Tsinghua University
2003-2022
First Hospital of China Medical University
2020-2022
China Medical University
2020-2022
A two-stage lightweighting Dealloying allows voids to be created in metals, decreasing the weight of material. However, when solid fraction is below about 30%, mechanical properties rapidly degrade. Shi et al. discovered that two dealloying steps allow for creation a silver-gold alloy with as low 12%. Unexpectedly, this process does not degrade while allowing large samples synthesized. The strategy should applicable other systems, providing pathway creating strong and lightweight materials....
Abstract The use of electricity generated from clean and renewable sources, such as water, wind, or sunlight, requires efficiently distributed electrical energy storage by high-power high-energy secondary batteries using abundant, low-cost materials in sustainable processes. American Science Policy Reports state that the next-generation “beyond-lithium” battery chemistry is one feasible solution for goals. Here we discover new “multivalent ion” beyond lithium chemistry. Through theoretic...
Abstract Flexible asymmetric supercapacitors with excellent electrochemical performance and aesthetic property are realized by using ultrathin two-dimensional (2D) MnO 2 graphene nanosheets as cathode anode materials, respectively. 2D (MSs) a thickness of ca. nm synthesized soft template method for the first time, which achieve high specific capacitance 774 F g −1 even after 10000 cycles. Asymmetric based on MSs exhibit very energy density up to 97.2 Wh kg no more than 3% loss cycles in...
We report a strategy for preparing macroscopic samples of nanoporous (np-) Pd by electrochemical dealloying. Starting out with the master alloy , single-step dealloying in 1 M at C provides hierarchical network structure two well-defined ligament sizes, 35 and 10 nm. The material is distinguished its uniform microstructure excellent mechanical deformability. Thereby, it may provide an alternative to dealloying-made gold as model system nanoscale functional materials. Our study exemplifies...
Nanoporous gold with a hierarchical structure has prospects as an advanced functional material enhanced mechanical properties, but how the affects its properties compared to unimodal not been revealed. Here, we investigate behavior of hierarchically-structured nanoporous and unimodally-structured same relative density by micropillar compressive tests in dry electrolyte environment. The ligament size at upper-level are kept similar, while having samples sizes 10 50 nm lower-level structure....
We present a one-step synthesis process for ultrathin non-crystalline MnO2 nanosheets. Their thickness is about 2 nm and the width varies from 5 to 20 nm. They induce higher capacitance than zero-dimensional spheres or one-dimensional rods. When heat treated at elevated temperature nanosheets partly grow into crystalline Mn2O3
Abstract FIB-SEM tomography is a powerful technique that integrates focused ion beam (FIB) and scanning electron microscope (SEM) to capture high-resolution imaging data of nanostructures. This approach involves collecting in-plane SEM images using FIB remove material layers for subsequent planes, thereby producing image stacks. However, these stacks in are subject the shine-through effect , which makes structures visible from posterior regions current plane. artifact introduces an ambiguity...
This work presents systematic investigations on the synthesis of hierarchical nanoporous Pd via electrochemical dealloying CuPd alloys in sulfuric acid. The impact electrode potential, temperature, and additional annealing microstructure morphology is explored. Dealloying Cu85Pd15 1M acid at elevated temperature provides a facile strategy to produce bulk samples which are uniform, hierarchically nanoporous, free macro-scale cracks. question "Why will one-step template-free yield not unimodal...
Significance By concatenating the fields of continuum mechanics and alloy thermodynamics in a unified framework, theory open system elasticity by Francis Larché John W. Cahn achieved one key advances 20th century. The theory’s implications for coupling between stress composition are generally well acknowledged, yet selected issues under debate. It is, therefore, dissatisfactory that predictions elastic parameters—as central materials descriptors—await experimental verification. Here, we...
We explore the hypothesis that variation of effective, macroscopic Young's modulus, Eeff, a random network material with its scaled topological genus, g, and solid fraction, φ, can be decomposed into product g- φ-dependent functions. Based on findings for nanoporous gold, supplemented by Gibson-Ashby scaling law we argue both functions are quadratic in bending-dominated structures. present finite-element-modeling results Eeff coarsened microstructures, which g φ decoupled. These support forms.
High-resolution X-ray imaging of noncrystalline objects is often achieved through the approach scanning coherent diffractive known as ptychography. The resolution usually limited by scattering properties sample, where weak diffraction signals at highest angles compete with parasitic scattering. Here, we demonstrate that multilayer Laue lenses a high numerical aperture (NA) can be used to create strong reference beam holographically boosts from sample over large range angles, enabling...
Caoguo (Tsaoko Fructus), a traditional Chinese medicine, is widely used as medicine and dietary spices. Volatile components are among its important bioactive constituents to treatment of abdominal distension pain, but the mechanism not clear up now. The purpose this study was develop simple, sensitive, accurate method analyze identify in vitro vivo, further investigate therapeutic on indigestion using network pharmacology.Caoguo were extracted by accelerated solvent extraction (ASE)...
Abstract Objectives As a traditional Chinese medicine, lotus leaf was reported to have significant hepatoprotective effect. To explore the mechanism of leaf, rapid and reliable UPLC-MS/MS method conducted simultaneously determine six specific endogenous substances including 5-oxoproline, phenylalanine, tryptophan, C18-phytosphingosine, lysophosphatidylcholine (16 : 0) (18 1). Methods With help HPLC–FT-ICR-MS, chemical constituents louts extract were elucidated. By observing histopathological...
A self-sufficient two-in-one whole-cell biocatalyst combining ketoreductase and cofactor regenerating enzyme activities has been developed successfully utilized to synthesize (R)-3-quinuclidinol with an increase in the reaction rate of 3-fold over native enzymes at low biocatalysts loading (∼1.65%), excellent enantioselectivity, impressive substrate concentration 486 g L–1, high space-time yield up 1505.5 L–1 d–1, which was highest ever reported. These results demonstrated that newly could...