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Highly Hydrated Silk Materials
Inspired by the mechanical training‐driven structural remodeling strategy in biological tissues, Shengjie Ling and co‐workers develop an engineered mechanical training strategy for self‐reinforcement of highly hydrated silk materials to improve their inherent mechanical and optical properties and broaden potential applications in tissue engineering, regenerative medicine,...
Air Filtration
In article number 2102051, Jinhan Mo, Guiyin Xu, Ju Li, and co‐workers develop a two‐stage electrostatically assisted air (EAA) filtration device with stage‐I plasma charging and stage‐II polydopamine coated polyethylene terephthalate (PET) coarse filters. By controlling the surface microstructure of the filters, the authors report an EAA PDA@PET filter with a high filtration efficiency,...
Flexible Nanogenerators
In article number 2103161, Yang Cao and co‐workers describe a new all‐organic flexible nanogenerator with expanded polytetrafluoroethylene (ePTFE)‐based ferroelectret and fabric‐based electrodes. Like a charge‐spring of three deformable dipoles, the outer electret‐plus‐electrode double layers form active device layers with deformable electric dipoles that strongly contribute...
Synergistic Therapy
In article number 2101155, Yujun Song, Zhengbao Zha, Xin Han, and co‐workers report a novel thermo‐responsive nanotherapeutic platform, which is triggered by 808 nm near‐infrared light irradiation. This exogenously controlled method can be used in combination tumor therapy, including gene‐therapy, mild‐photothermal therapy, and chemotherapy, which provides a versatile strategy...
Ultrathin nickel (Ni)‐based sulfide nanosheets have been reported as excellent electrocatalysts for overall water splitting; however, the uncontrollability over thickness due to the nonlayered structure still hampers its practical application. Herein, a simple topochemical conversion strategy is employed to synthesize cobalt‐doped Ni3S2 (Co‐Ni3S2) ultrathin nanosheets on Ni foam. The Co‐Ni3S2 nanosheets...
Ordered porous carbon materials (PCMs) have potential applications in various fields due to their low mass densities and porous features. However, it yet remains extremely challenging to construct PCMs with multifunctionalization for electromagnetic wave absorption. Herein, the honeycombed‐like carbon aerogels with embedded Co@C nanoparticles are fabricated by a directionally freeze‐casting and carbonization...
Airborne particulate matters (PM) pose serious health threats to the population, and efficient filtration is needed for indoor and vehicular environments. However, there is an intrinsic conflict between filtration efficiency, air resistance, and service life. In this study, a two‐stage electrostatically assisted air (EAA) filtration device is designed and the efficiency‐air resistance‐filter life...
Mixed‐dimensional heterostructures (MDHs), which combine nanomaterials of different dimensionalities deliver on the promise to bypass intrinsic limitations of a given low‐dimensional material. Here, a strategy to engineer MDHs between two low‐dimensional materials by curvature‐complementary self‐assembly is described. CdSe nanotubes rolled from 2D nanosheets and 1D CdSe nanorods, with negative and...
Due to their electrically polarized air‐filled internal pores, optimized ferroelectrets exhibit a remarkable piezoelectric response, making them suitable for energy harvesting. Expanded polytetrafluoroethylene (ePTFE) ferroelectret films are laminated with two fluorinated‐ethylene‐propylene (FEP) copolymer films and internally polarized by corona discharge. Poly(3,4‐ethylenedioxythiophene):poly(styrene...
Highly hydrated silk materials (HHSMs) have been the focus of extensive research due to their usefulness in tissue engineering, regenerative medicine, and soft devices, among other fields. However, HHSMs have weak mechanical properties that limit their practical applications. Inspired by the mechanical training‐driven structural remodeling strategy (MTDSRS) in biological tissues, herein, engineered...
Human induced pluripotent stem cells (iPSCs) are ideal for developing personalized medicine. However, the spontaneous differentiation of human iPSCs under conventional 2D and 3D cultures results in significant heterogeneity and compromised quality. Therefore, a method for effectively isolating and expanding high‐quality human iPSCs is critically needed. Here, a biomimetic microencapsulation approach...
Thermal management is of vital importance in various modern technologies such as portable electronics, photovoltaics, and thermoelectric devices. Impeding phonon transport remains one of the most challenging tasks for improving the thermoelectric performance of certain materials such as half‐Heusler compounds. Herein, a significant reduction of lattice thermal conductivity (κL) is achieved by applying...
Graphene is a 2D material combining numerous outstanding physical properties, including high flexibility and strength, extremely high thermal conductivity and electron mobility, transparency, etc., which make it a unique testbed to explore fundamental physical phenomena. Such physical properties can be further tuned by combining graphene with other nanomaterials or (macro)molecules to form hybrid...
The development of flexible and reconfigurable sensors that can be readily tailored toward different molecular analytes constitutes a key goal and formidable challenge in biosensing. In this regard, synthetic nanopores have emerged as potent physical transducers to convert molecular interactions into electrical signals. Yet, systematic strategies to functionalize their surfaces with receptor proteins...
As high performance and safety alternatives to the batteries with organic electrolytes, aqueous zinc‐based batteries are still far from satisfactory in practical use because of the limitation of the intercalation reaction mechanism and the strict requirements for the cathodes. Very recently, zinc‐based dual electrolytic batteries (DEBs), where the cathode and anode are both based on reversible electrolytic...
The development of novel, highly efficient, reliable, and robust surface enhanced Raman scattering (SERS) substrates containing a large number of hot spots with programmed size, geometry, and density is extremely interesting since it allows the sensing of numerous (bio‐)chemical species. Herein, an extremely reliable, easy to fabricate, and label‐free SERS sensing platform based on metal nanoparticles...
Nickel chalcogenide (S and Se) based nanostructures intrigued scientists for some time as materials for energy conversion and storage systems. Interest in these materials is due to their good electrochemical stability, eco‐friendly nature, and low cost. The present review compiles recent progress in the area of nickel‐(S and Se)‐based materials by providing a comprehensive summary of their structural...
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