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MXene‐Based Aptameric Fluorosensors
The aptamer‐functionalized MXene nanosheet acts as an effective bionanosensor for fluorescence‐enhanced detection of COVID‐19 with high sensitivity and specificity. This fluosensor is capable of detecting SARS‐CoV‐2 spike protein (limit of detection: 38.9 fg mL−1) and SARS‐CoV‐2 pseudovirus (limit of detection: 7.2 copies) within 30 min, and can also detect clinical...
The severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2)‐caused COVID‐19 pandemic has rapidly escalated into the largest global health emergency, which pushes to develop detection kits for the detection of COVID‐19 with high sensitivity, specificity, and fast analysis. Here, aptamer‐functionalized MXene nanosheet is demonstrated as a novel bionanosensor that detects COVID‐19. Upon binding...
Graphdiyne, a carbon allotrope, was synthesized in 2010 for the first time. It consists of two acetylene bonds between adjacent benzene rings. Graphdiyne and its composites thus exhibit ultrahigh intrinsic electrochemical activities. As “star” electrode materials, they have been utilized for various electrochemical applications. With the aim of giving a full screen of graphdiyne electrochemistry,...
Metallic zinc anodes in zinc‐ion batteries suffer from problematic Zn dendrite chemistry. Previous works have shown that preferred‐orientation crystal planes can help dendrite‐free metal anodes. This work reports a nanothickness (≈570 nm) AgZn3 coating to regulate the Zn growth. First, AgZn3@Zn anode avoids the problem, in Ag@Zn anode, that the rate of electrochemical Ag‐Zn alloying is slower than...
Tremendous demands for highly sensitive and selective nonenzymatic electrochemical biosensors have motivated intensive research on advanced electrode materials with high electrocatalytic activity. Herein, the 3D‐networked CuO@carbon nanowalls/diamond (C/D) architecture is rationally designed, and it demonstrates wide linear range (0.5 × 10−6–4 × 10−3 m), high sensitivity (1650 µA cm−2 mm−1), and low...
Flexible strain sensors can detect physical signals (e.g., temperature, humidity, and flow) by sensing electrical deviation under dynamic deformation, and they have been used in diverse fields such as human motion detection, medical care, speech recognition, and robotics. Existing sensing materials have relatively low adaptability and durability and are not stretchable and flexible enough for complex...
T cells can kill tumor cells by cell surface immunological recognition, but low affinity for tumor‐associated antigens could lead to T cell off‐target effects. Herein, a universal T cell targeting strategy based on bio‐orthogonal chemistry and glycol‐metabolic engineering is introduced to enhance recognition and cytotoxicity of T cells in tumor immunotherapy. Three kinds of bicycle [6.1.0] nonyne...
High‐performance supercapacitors feature big and stable capacitances and high power and energy densities. To fabricate high‐performance supercapacitors, 3D 3C‐SiC/graphene hybrid nanolaminate films are grown via a microwave plasma‐assisted chemical vapor deposition technique. Such films consist of 3D alternating structures of vertically aligned 3C‐SiC and graphene layers, leading to high surface areas...
The innovation of band‐gap engineering in advanced materials caused by the alloying of different semiconductors into solid‐solution nanostructures provides numerous opportunities and advantages in optoelectronic property tailoring. The semiconductor solid‐solution nanostructures have multifarious emission wavelength, adjustability of absorption edge, tunable electrical resistivity, and cutting‐edge...
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