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Acoustic Coding Metasurfaces
In article number 2308349, Hao‐Wen Dong and co‐workers employ topology optimization techniques to design a 3‐bit broadband acoustic coding metasurface. With the 3‐bit coding units, a broadband acoustic vortex metasurface is established. Within the target frequency domain, it can modulate reflected acoustic waves into vortex waves. Combined with convolution methods, we...
The acoustic coding metasurfaces (ACMs) have the ability to manipulate complex acoustic behavior by reconstructing the coding sequence. In particular, the design of broadband coding enhances the versatility of ACMs. ACMs offer significant advantages over traditional metasurfaces, including a limited number of units and flexible wave control performance. The unit quantity is determined by 2n, with...
DNA strand displacement reactions are vital for constructing intricate nucleic acid circuits, owing to their programmability and predictability. However, the scarcity of effective methods for eliminating circuit leakages has hampered the construction of circuits with increased complexity. Herein, a versatile strategy is developed that relies on a spatially controlled proximity split tweezer (PST)...
The design and fabrication of NO‐evolving core‐shell nanoparticles (denoted as NC@Fe), comprised of BNN6‐laden COF@Fe3O4 nanoparticles, are reported. This innovation extends to the modification of 3D printed polyetheretherketone scaffolds with NC@Fe, establishing a pioneering approach to multi‐modal bone therapy tailored to address complications such as device‐associated infections and osteomyelitis...
Nanotechnology‐based strategy has recently drawn extensive attention for the therapy of malignant tumors due to its distinct strengths in cancer diagnosis and treatment. However, the limited intratumoral permeability of nanoparticles is a major hurdle to achieving the desired effect of cancer treatment. Due to their superior cargo towing and reliable penetrating property, micro‐/nanomotors (MNMs)...
Diabetic chronic wounds pose significant clinical challenges due to their characteristic features of impaired extracellular matrix (ECM) function, diminished angiogenesis, chronic inflammation, and increased susceptibility to infection. To tackle these challenges and provide a comprehensive therapeutic approach for diabetic wounds, the first coaxial electrospun nanocomposite membrane is developed...
The perception of temperature and pressure of skin plays a vital role in joint movement, hand grasp, emotional expression, and self‐protection of human. Among many biomimetic materials, ionic gels are uniquely suited to simulate the function of skin due to its ionic transport mechanism. However, both the temperature and pressure sensing are heavily dependent on the changes in ionic conductivity, making...
Topological insulators (TIs) are characterized by a full insulating gap in the bulk and gapless edge or surface states, which have attracted tremendous attention. 2D Bi (110), as a typical TI, is of particular interest due to its low symmetry structure and topologically protected and spin‐momentum‐locked Dirac surface states. However, the material's potential applications are hindered by difficulties...
Regulating the electronic structure of active sites and monitoring the evolution of the active component is essential to improve the intrinsic activity of catalysts for electrochemical reactions. Herein, a highly efficient pre‐electrocatalyst of iron diselenide with rich Se vacancies achieved by phosphorus doping (denoted as P‐FeSe2) for oxygen evolution reaction (OER) is reported. Systematically...
Nanomaterials with enzyme mimetic activity have attracted extensive attention, especially in the regulation of their catalytic activities by biomolecules or other polymers. Here, a covalent organic framework (Tph‐BT COF) with excellent photocatalytic activity is constructed by Schiff base reaction, and its mimetic oxidase activity and peroxidase activity is inversely regulated via single‐stranded...