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Stimuli‐responsive surfaces with tunable fluidic and optical properties utilizing switchable surface topography are of significant interest for both scientific and engineering research. This work presents a surface involving silicon scales on a magnetically responsive elastomer micropillar array, which enables fluid and light manipulation. To integrate microfabricated silicon scales with ferromagnetic...
Sodium–ion batteries (SIBs) have received extensive attention as ideal candidates for large‐scale energy storage systems (ESSs) owing to the rich resources and low cost of sodium (Na). However, the larger size of Na+ and the less negative redox potential of Na+/Na result in low energy densities, short cycling life, and the sluggish kinetics of SIBs. Therefore, it is necessary to develop appropriate...
The development of highly efficient and durable non‐noble metal electrocatalysts for the hydrogen evolution reaction (HER) is significant for clean and renewable energy research. This work reports the synthesis of N‐doped graphene nanosheets supported N‐doped carbon coated cobalt phosphide (CoP) nanoparticles via a pyrolysis and a subsequent phosphating process by using polyaniline. The obtained electrocatalyst...
With the development of energy science and electronic technology, interfacial thermal transport has become a key issue for nanoelectronics, nanocomposites, energy transmission, and conservation, etc. The application of thermal interfacial materials and other physical methods can reliably improve the contact between joined surfaces and enhance interfacial thermal transport at the macroscale. With the...
2D nanosheets of transition metal dichalcogenides (TMDCs) have been attracting attention due to their sizable band gap. Facile and effective Na‐cation‐assisted exfoliation of TMDC (MX2, M = Mo, W; X = S, Se) nanosheets in an aqueous medium and their application as a composite filler in a polyvinyl alcohol (PVA) matrix are explored in this work. The presence of Na cations is highly beneficial for exfoliating...
In article 1702747, Sun Jin Yun and co‐workers report a novel aqueous exfoliation method using Na‐cations that produces 2D nanosheets of transition metal dichalcogenides for nanofiller‐polyvinyl alcohol composite applications. The flexible resistive memory using the nanocomposite exhibited electrical bistable and write‐once‐read‐many‐times switching behaviors with a high ON/OFF current ratio of 3...
Na/FeSx batteries have remarkable potential applicability due to their high theoretical capacity and cost‐effectiveness. However, realization of high power‐capability and long‐term cyclability remains a major challenge. Herein, ultrafine Fe7S8@C nanocrystals (NCs) as a promising anode material for a Na–ion battery that addresses the above two issues simultaneously is reported. An Fe7S8 core with quantum...
One of the key challenges in artificial photosynthesis is to design a photocatalyst that can bind and activate the CO2 molecule with the smallest possible activation energy and produce selective hydrocarbon products. In this contribution, a combined experimental and computational study on Ni‐nanocluster loaded black TiO2 (Ni/TiO2[Vo]) with built‐in dual active sites for selective photocatalytic CO...
In article number 1702928, Indrajit Shown, Li‐Chyong Chen, Kuei‐Hsien Chen, and co‐workers report a black titania with dual active sites (Ni‐nanoclusters and oxygen vacancy) for photocatalytic carbon dioxide (CO2) reduction via artificial photosynthesis with H2O and simulated sunlight. The intentionally introduced dual active sites lead to not only high photocatalytic activity, but also to selective...
In article 1701521, Mitsuru Akashi, Jürgen Groll, and co‐workers use a cell‐accumulation technique for the controlled formation of tubular structures in cellular constructs. The image is a confocal laser scanning microscopy image showing HUVECs attached to polycaprolactone scaffolds with 100 μm pores produced by melt electrowriting after 1 day of incubation.
Recently, the development of multifunctional theranostic nanoplatforms to realize tumor‐specific imaging and enhanced cancer therapy via responding or modulating the tumor microenvironment (TME) has attracted tremendous interests in the field of nanomedicine. Herein, tungsten disulfide (WS2) nanoflakes with their surface adsorbed with iron oxide nanoparticles (IONPs) via self‐assembly are coated with...
Infrared imaging systems have wide range of military or civil applications and 2D nanomaterials have recently emerged as potential sensing materials that may outperform conventional ones such as HgCdTe, InGaAs, and InSb. As an example, 2D black phosphorus (BP) thin film has a thickness‐dependent direct bandgap with low shot noise and noncryogenic operation for visible to mid‐infrared photodetection...
Metal oxide‐based resistive random access memory (RRAM) has attracted a lot of attention for its scalability, temperature robustness, and potential to achieve machine learning. However, a thick oxide layer results in relatively high program voltage while a thin one causes large leakage current and a small window. Owing to these fundamental limitations, by optimizing the oxide layer itself a novel...
Metal–organic frameworks (MOFs) and their derivatives with well‐defined structures and compositions show great potential for wide applications such as sensors, catalysis, energy storage, and conversion, etc. However, poor electric conductivity and large volume expansion are main obstacles for their utilization in energy storage, e.g., lithium–ion batteries and supercapacitors. Herein, a facile strategy...
In the present study, transport properties and single trap phenomena in silicon nanowire (NW) field‐effect transistors (FETs) are reported. The dynamic behavior of drain current in NW FETs studied before and after gamma radiation treatment deviates from the predictions of the Shockley–Read–Hall model and is explained by the concept taking into account an additional energy barrier in the accumulation...
In this paper, the development of organic field‐effect transistor (OFET) memory device based on isolated and ordered nanostructures (NSs) arrays of wide‐bandgap (WBG) small‐molecule organic semiconductor material [2‐(9‐(4‐(octyloxy)phenyl)‐9H‐fluoren‐2‐yl)thiophene]3 (WG3) is reported. The WG3 NSs are prepared from phase separation by spin‐coating blend solutions of WG3/trimethylolpropane (TMP), and...
In article 1702839, Seok Kim and co‐workers construct a magnetically responsive surface consisting of an array of silicon scales assembled on ferromagnetic elastomer micropillars. Multiple functions, such as droplet manipulation, structural coloration, and tunable optical transmission, are realized by incorporating a wide range of nanostructured silicon scales in a controlled configuration.
Glaucoma is a multifactorial neurodegenerative disease associated with retinal ganglion cells (RGC) loss. Increasing reports of similarities in glaucoma and other neurodegenerative conditions have led to speculation that therapies for brain neurodegenerative disorders may also have potential as glaucoma therapies. Memantine is an N‐methyl‐d‐aspartate (NMDA) antagonist approved for Alzheimer's disease...
A remaining challenge in tissue engineering approaches is the in vitro vascularization of engineered constructs or tissues. Current approaches in engineered vascularized constructs are often limited in the control of initial vascular network geometry, which is crucial to ensure full functionality of these constructs with regard to cell survival, metabolic activity, and potential differentiation ability...
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