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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...
Synergetic Prostate Cancer Therapies
In article number 2207077, Li Zhang, Yunjiao Zhang, Chaozhao Liang, and co‐workers propose intratumoral implantation of micromagnets to actively attract intravenously‐injected magnetic PEGylated manganese‐zinc ferrite nanocrystals (PMZFNs) from blood vessels into tumor tissue. PMZFNs exert relatively durable tumoricidal effects by inducing ferroptotic/immunogenic...
Therapeutic efficacy for prostate cancer is highly restricted by insufficient drug accumulation and the resistance to apoptosis and immunogenic cell death (ICD). Although enhanced permeability and retention (EPR) effect of magnetic nanomaterials could benefit from external magnetic field, it falls off rapidly with increased distance from magnet surface. Considering the deep location of prostate in...
Li‐rich layered oxides are considered as one of the most promising cathode materials for secondary lithium batteries due to their high specific capacities, but the issue of continuous voltage decay during cycling hinders their market entry. Increasing the Ni content in Li‐rich materials is assumed to be an effective way to address this issue and attracts recent research interests. However, a high...
It is extremely crucial to design and match high‐quality cathode and anode for achieving high‐performance asymmetric supercapacitors (ASCs). Herein, Co3(PO4)2@NiCo‐LDH/Ni foam (CP@NCOH/NF) cathode with hierarchical morphology and graphene hydrogel/Fe–Ni phosphide/Ni foam (GH/FNP/NF) anode with the robust and porous structure are elaborately designed and prepared, respectively. Owing to their unique...
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....
Biomimetic stimuli‐responsive structure colors (SCs) can improve the visualization and identification in the micro functional structure field such as information encryption/decryption and smart actuators. However, it is still challenging to develop the ability to 4D print arbitrary submerged colorful patterns with stimuli‐responsive materials at the microscale. Herein, a hydrogel photoresist with...
Enhanced electrochemiluminescence (ECL) aims to promote higher sensitivity and obtain better detection limit. The core–shell nanostructures, owing to unique surface plasmon resonance (SPR) enabling distance‐dependent strong localized electromagnetic field, have attracted rising attention in enhanced ECL research and application. However, the present structures usually with porous shell involve electrocatalytic...
Micromachines with high environmental adaptability have the potential to deliver targeted drugs in complex biological networks, such as digestive, neural, and vascular networks. However, the low processing efficiency and single processing material of current 4D printing methods often limit the development and application of shape‐morphing micromachines (SMMs). Here, two 4D printing strategies are...
Virus Coinfection Diagnosis
In article number 2200854, Jing Cheng, Youchun Xu, and co‐workers develop MAPnavi, a platform for rapid and sensitive differential diagnosis of respiratory viral coinfection. In the darkest hour before the dawn against the epidemic, MAPnavi is sailing with a centrifugal booster, revealing the true face of cunning viruses from the respiratory tract.
The ongoing pandemic caused by severe acute respiratory syndrome coronavirus 2 is profoundly influencing the global healthcare system and people's daily lives. The high resource consumption of coronavirus disease 2019 (COVID‐19) is resulting in insufficient surveillance of coinfection or resurgence of other critical respiratory epidemics, which is of public concern. To facilitate evaluation of the...
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