36 Result(s)
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Article
Electricity generated by upstream proton diffusion in two-dimensional nanochannels
The movement of ions along the pressure-driven water flow in narrow channels, known as downstream ionic transport, has been observed since 1859 to induce a streaming potential and has enabled the creation of v...
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Erratum to: Efficient and stable perovskite solar cells by build-in π-columns and ionic interfaces in covalent organic frameworks
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Article
Excitation-assisted pseudo-ferroelectric effect in ultrathin graphene/phosphorene heterostructure
Pseudo-ferroelectric transistors have attracted particular interest owing to their applications in the non-volatile memories and neuromorphic circuits; however, it remains to be explored in the limit of few-la...
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Effects of fused silica surface roughness on the interfacial adsorption mechanism of contaminant
Since surface contaminants can make optical components such as fused silica highly susceptible to damage, how to maintain the cleanliness of fused silica is an effective way to improve the laser damage thresho...
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Article
Role of electrodes in study of hydrovoltaic effects
The last decade has witnessed the emergence of hydrovoltaic technology, which can harvest electricity from different forms of water movement, such as raindrops, waves, flows, moisture, and natural evaporation....
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UV-stimulated self-healing SiO2/CeO2 microcapsule with excellent UV-blocking capability in epoxy coating
UV-inducing single-microcapsule self-healing system has great potential to repair microcracks for spacecraft coating with the assistance of sufficient UV radiation available in the space environment, thereby ...
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Efficient and stable perovskite solar cells by build-in π-columns and ionic interfaces in covalent organic frameworks
Perovskite solar cells (PSCs) have attracted much attention due to their rapidly increased power conversion efficiencies, however, their inherent poor long-term stability hinders their commercialization. The d...
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Tunable bandgap of black phosphorus by arsenic substitution toward high-performance photodetector
Multilayer black phosphorus (BP) has been widely used in many infrared applications due to its narrow bandgap below 3.7-µm wavelength range. Approaches that reduce the bandgap to less than 0.33 eV would extend...
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Lifting surface reconstruction of Au (100) by tellurium adsorption
The Au (100) surface has been a subject of intense studies due to excellent catalytic activities and its model character for surface science. However, the spontaneous surface reconstruction buries active Au (1...
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High-yield carbon derived from commercial phenol–formaldehyde resin for broadband microwave absorption by balancing conductivity and polarization loss
Lightweight and chemically stable carbon are widely applied as attractive microwave absorption materials (MAMs). However, the effective response bandwidth of pure carbonaceous MAMs is limited due to the imbala...
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A clean dry transfer of hexagonal boron nitride with improved oxidation resistance
Hexagonal boron nitride (h-BN) is an outstanding two-dimensional material in terms of thermal stability and chemical inertness, enabling its versatile applications under harsh conditions. However, the oxidatio...
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Ultralow friction of ion-containing water nanodroplets
We reveal the ultralow friction or superlubricity of water nanodroplets containing cations and anions on graphene substrates at high ion concentration by molecular dynamics simulations. When the ion concentrat...
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Portable and flexible water-evaporation-generator based on hydrogel
水蒸发生电器件(WEG)是**年来发现的一种从自然水蒸发中获 取能量的新方法, 其巨大的应用潜力引起了广泛的研究兴趣. 然而, WEG通常需要提供液态水源, 不利于其便携式应用. 这里, 我们开发了一种基于聚丙烯酰胺水凝胶与网状电极复合的便携式柔性WEG. 当器件的一侧暴露在空气中时, 不对称的水分蒸发会产生持续3天以上0.2 V左右的开路电压输出. 即使在温度低至−5°C情况下, 也可以连续工作. 尽管低温下由于水...
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Distributed adaptive discontinuous consensus tracking control for disturbed multi-agent systems based on input-observers
Adaptive consensus tracking control for disturbed multi-agent systems (MASs) is investigated by discontinuous protocol in this paper. Firstly, to estimate the leader’s input, an adaptive input observer is cons...
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Flexoelectricity enhanced water splitting and hydrogen evolution reaction on grain boundaries of monolayer transition metal dichalcogenides
Our extensive first-principles calculations reveal that the chemical activities of monolayer transition metal dichalcogenides (TMDs) MX2 (M = Mo or W, and X = Te, Se, or S) for water splitting and hydrogen evolut...
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Mechanistic insight into electricity generation from moving ionic droplets on graphene
Recent experiments have demonstrated that moving water droplets on polymer-supported graphene can generate electric voltages in graphene. Here, we perform a multi-scale analysis on the mechanism of the generat...
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Article
Strong electron-ion coupling in gradient halide perovskite heterojunction
The electron-ion coupling in iontronics has great significance and potential for energy conversion and storage devices. However, it is a substantial challenge to integrate iontronics into all-solid-state semic...
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Probing interactions at two-dimensional heterointerfaces by boron nitride-wrapped tip
Non-covalent interactions are important for two-dimensional heterointerfaces but challenged to be accurately determined, especially when the dielectric hexagonal boron nitride (BN) is involved. Here, we presen...
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Double drumheadlike surface states in elemental group V nodal line semimetals
Drumheadlike surface states are typical characteristics in nodal line semimetals and bring varieties of unusual attractive properties. Here we demonstrate the double drumheadlike surface states in group V elem...
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Probing van der Waals interactions at two-dimensional heterointerfaces
Two-dimensional (2D) heterostructures assembled via van der Waals (vdW) interactions have sparked immense interest in fields from physics1,2 to electronics3,4. Understanding the vdW interaction at these heteroint...
