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Solar‐driven interfacial evaporation is a potential water purification solution. Here, a novel regenerable hydrogel interfacial evaporator is designed with tunable water production. Such an evaporator is fabricated by readily mixing hydroxypropyl chitosan (HPCS) and dibenzaldehyde‐functional poly(ethylene glycol) (DF‐PEG) at ambient conditions. Dynamic Schiff base bonds bestow on the HPCS/DF‐PEG hydrogel...
The mechanism of extracellular ligand nano‐geometry in ex vivo T cell activation for immunotherapy remains elusive. Herein, the authors demonstrate large aspect ratio (AR) of gold nanorods (AuNRs) conjugated on cell culture substrate enhancing both murine and human T cell activation through the nanoscale anisotropic presentation of stimulatory ligands (anti‐CD3(αCD3) and anti‐CD28(αCD28) antibodies)...
Although chemotherapy and photothermal therapy are widely used to combat cancer, their efficacy is often limited by multidrug resistance. Small interfering RNAs (siRNAs) have ability to suppress the expression of target genes, which has been extensively employed for combating the multidrug resistance to chemodrugs and hyperthermia in cancer therapy. However, efficient delivery of siRNAs along with...
Low‐Dimensional Confined Water
In article number 2100788, Dianyu Wang, Ye Tian, and Lei Jiang summarize the physical properties of low‐dimensional confined water through several common forms ranging from artificial to biological areas. The confinement size and surface properties affect the water behavior and destroy the tetrahedral hydrogen bond coordination mode which results in its intrinsic properties...
Water molecules confined to low‐dimensional spaces exhibit unusual properties compared to bulk water. For example, the alternating hydrophilic and hydrophobic nanodomains on flat silicon wafer can induce the abnormal spreading of water (contact angles near 0°) which is caused by the 2D capillary effect. Hence, exploring the physicochemical properties of confined water from the nanoscale is of great...
Ensuring the stability of all‐inorganic halide perovskite light‐emitting diodes (LEDs) has become an obstacle that needs to be broken for commercial applications. Currently, lead halide perovskite CsPbX3 (X = Br, I, Cl) nanocrystals (NCs) are considered as alternative materials for future fluorescent lighting devices due to their combination of superior optical and electronic properties. However,...
Alkali metal (Li, Na, K) ion batteries with high energy density are urgently required for large‐scale energy storage applications while the lack of advanced anode materials restricts their development. Recently, Bi‐based materials have been recognized as promising electrode candidates for alkali metal‐ion batteries due to their high volumetric capacity and suitable operating potential. Herein, the...
Rechargeable Zn/MnO2 batteries using mild aqueous electrolytes are attracting extensive attention due to their low cost, high safety, and environmental friendliness. However, the charge‐storage mechanism involved remains a topic of controversy so far. Also, the practical energy density and cycling stability are still major issues for their applications. Herein, a free‐standing α‐MnO2 cathode for aqueous...
With the development of structural DNA nanotechnology, DNA has now far exceeded its original function: as a genetic code. It can, in principle, self‐assemble into desired shapes with accurate size. Moreover, it can perform as a functional linker to program other materials by grafting DNA onto these materials. Nanoparticles, both inorganic and organic, can now be programmatically assembled into complex...
The homing pigeon‐inspired artificial nanochannel can be modulated by moderate magnetic field in a fast and noncontacting way. The ionic current, as well as rectifying ability and conductance is controlled by the magnetic field reversibly through elastic deformation of the nanochannel. Different gating effects are obtained at the two sides of the asymmetrically conical nanochannel due to the different...
Integrating multiscale structural functions in one device is of great significance in water collection. So a multiscale structured membrane is designed to achieve cycle between water directional collection on the micrometer‐sized biomimetic beads and directional transport to the intersection of adjacent fibers, which endows the membrane with high efficiency and continuity in water collection.
Polypyrrole composite nanoparticles with controlled shape are synthesized, which exhibit a morphology‐dependent photothermal effect: the raspberry‐like composite nanoparticles have a much better photothermal effect than the spherical ones, and the immune responses to the nanocomposites are also dependent on their morphology. The outstanding performance of the nanocomposites promises their potential...
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