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Structurally Colored Cholesteric Phases of Cellulose
In article number 2205506, Ozge Akbulut, Ahu Gümrah Dumanli, and co‐workers describe a 3D printing of the hydroxypropyl cellulose (HPC) filaments with two‐order hierarchical structures similar to the multi‐hierarchical arrangement found in nature such as in Morpho butterflies. In this hierarchical arrangement, the helicoids formed in the cholesteric...
Targeted Protein Deliveries
In article number 2204620, Hak‐Sung Kim and co‐workers develop a new type of protein self‐assembly using human clathrin for a targeted protein delivery. A redesigned clathrin triskelion is dual‐functionalized with functional biomolecules. The resulting clathrin assembly exhibits a significantly high avidity and an efficient delivery of a protein cargo into tumor cells....
Neuromorphic Imaging Systems
In article number 2206181, Xiaoli Zhao, Qingxin Tang, and co‐workers present a multimodal‐synergistic‐modulation neuromorphic imaging systems based on ultraflexible synaptic transistors. The device is capable to simulate the spherical structure and the environmental adaptive behavior of the human eye. Based on the function that synaptic weight can be synergistically regulated...
Halide Crystals
In article number 2205981, Ken‐Tsung Wong, Hao‐Wu Lin, and co‐workers demonstrate highly efficient and green emissive manganese halide crystals showing a notable absolute photoluminescence quantum yield ≈ 94% and an unprecedented thermal quenching resistance from 4 to 623 K. The crystals find their applications in phosphor‐converted light emitting diodes, organic light emitting diodes...
Drug Free Tumor Theranostics
In article number 2205165, Tymish Y. Ohulchanskyy and co‐authors introduce hemoglobin nanocrystals for drug free, synergistic and selective theranostics of colon cancer. After intravenous (i.v.) injection, these nanocrystals target colon tumor and react with tumor‐specific H2S and H2O to enable magnetic resonance imaging guided photothermal therapy and produce •OH for...
Mechanoluminescence (ML) materials present widespread applications. Empirically, modulation for a given ML material is achieved by application of programmed mechanical actuation with different amplitude, repetition velocity and frequency. However, to date modulation on the ML is very limited within several to a few hundred hertz low‐frequency actuation range, due to the paucity of high‐frequency mechanical...
Rheological Tunable Magnetic Fluids
In article number 2204609, Hong Yang, Quan Li, and co‐workers design a magnetic fluid by using oleic acid coated Fe3O4 nanoparticles as the magnetic particles, and the amphiphilic penta block copolymer‐based aqueous solution as the carrier fluid. This magnetic fluid possesses outstanding long‐term stability and reversible rheological changes between the low‐viscosity...
In this paper, a quaternary dielectric soft‐contact rotary triboelectric nanogenerator (QDSR‐TENG) of low frictional resistance is fabricated for combining TENG with a shape memory alloy (SMA) engine. The introduction of rabbit fur brush and FEP brush results in charge pumps with a partially soft contact structure. Benefiting from the low friction loss of the structure, the QDSR‐TENG can operate stably...
Broadband infrared (IR) absorption is sought after for wide range of applications. Graphene can support IR plasmonic waves tightly bound to its surface, leading to an intensified near‐field. However, the excitation of graphene plasmonic waves usually relies on resonances. Thus, it is still difficult to directly obtain both high near‐field intensity and high absorption rate in ultra‐broad IR band....
One of the long‐standing challenges of current lead‐free energy storage ceramics for capacitors is how to improve their comprehensive energy storage properties effectively, that is, to achieve a synergistic improvement in the breakdown strength (Eb) and the difference between maximum polarization (Pmax) and remnant polarization (Pr), making them comparable to those of lead‐based capacitor materials...
The α‐Ni(OH)2 is regarded as one promising cathode for aqueous nickel‐zinc batteries due to its high theoretical capacity of ≈480 mAh g−1, its practical deployment however suffers from the poor stability in strong alkaline solution, intrinsic low electrical conductivity as well as the retarded ionic diffusion. Herein, a 3D (three dimensional) macroporous α‐Ni(OH)2 nanosheets with Co doping is designed...
Metal nanoparticles have attracted considerable scientific and technological interest in recent years, most related explorations and reports are focused on transition and noble metals. However, the synthesis and application of light metal nanoparticles represented by Mg have not been fully exploited, limited by their ultrahigh reactivity in air and preparation in harsh conditions. In this work, a...
Platinum group metal (PGM)‐free M‐N‐C catalysts have exhibited dramatic electrocatalytic performance and are considered the most promising candidate of the Pt catalysts in oxygen reduction reaction (ORR). However, the electrocatalytic performance of the M‐N‐C catalysts is still limited by their inferior intrinsic activity and finite active site density. Regulating the coordination environment and...
Inspired by human eyes, the neuromorphic visual system employs a highly efficient imaging and recognition process, which offers tremendous advantages in image acquisition, data pre‐processing, and dynamic storage. However, it is still an enormous challenge to simultaneously simulate the structure, function, and environmental adaptive behavior of the human eye based on one device. Here, a multimodal‐synergistic‐modulation...
Co3O4 with high theoretical capacitance is a promising electrode material for high‐end energy applications, yet the unexcited bulk electrochemical activity, low conductivity, and poor kinetics of Co3O4 lead to unsatisfactory charge storage capacity. For boosting its energy storage capability, rare earth (RE)‐doped Co3O4 nanostructures with abundant oxygen vacancies are constructed by simple, economical,...
The fast electrochemical kinetics behavior and long cycling life have been the goals in developing anode materials for potassium ion batteries (PIBs). On account of high electron conductivity and theoretical capacity, transition metal selenides have been deemed as one of the promising anode materials for PIBs. Herein, a systematic structural manipulation strategy, pertaining to the confine of Fe3Se...
Rare‐earth (RE) chalcogenides have been extensively studied as infrared nonlinear optical (NLO) materials because of their nice integrated performances; however, very few RE chalcophosphates are involved for this topic. Here, three quaternary RE selenophosphates, KSmP2Se6 (1), KGdP2Se6 (2), and KTbP2Se6 (3), are profoundly studied for their NLO potentials. Their noncentrosymmetric P21 structures feature...
Protein adsorption at the air–water interface is a serious problem in cryogenic electron microscopy (cryoEM) as it restricts particle orientations in the vitrified ice‐film and promotes protein denaturation. To address this issue, the preparation of a graphene‐based modified support film for coverage of conventional holey carbon transmission electron microscopy (TEM) grids is presented. The chemical...
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