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Implant‐associated bacterial infections significantly impair the integration between titanium and soft tissues. Traditional antibacterial modifications of titanium implants are able to eliminate bacteria, but the resulting pro‐inflammatory reactions are usually ignored, which still poses potential risks to human bodies. Here, a dual drug‐loading system on titanium has been developed via the adhesion...
Droplet microfluidics has revolutionized the biomedical and drug development fields by allowing for independent microenvironments to conduct drug screening at the single cell level. However, current microfluidic sorting devices suffer from drawbacks such as high voltage requirements (e.g., >200 Vpp), low biocompatibility, and/or low throughput. In this article, a single‐phase focused transducer...
Acoustofluidic Sorters
The cover image depicts the design of an acoustofluidic droplet sorter based on single phase focused transducers. In the droplet sorter, the droplets sequentially flow through a tapered channel where an optical fiber pair detects fluorescence signals and then, according to the fluorescence information, pulse acoustic signals are generated to trigger the single‐phase focused...
For the first time, a new polymer electrode AQS/S is prepared by compositing Ni3S2 nanosheets and macromolecular anthraquinone derivative (AQD) supported on nickel foam with flying colors. The AQS/S exhibits high crystalline structure and abundant S defects. Density of state calculation shows that AQD has stable internal bonding and easy external bonding with metals, conducive to the dispersion of...
Acoustofluidics, the fusion of acoustics and microfluidic techniques, has recently seen increased research attention across multiple disciplines due in part to its capabilities in contactless, biocompatible, and precise manipulation of micro‐/nano‐objects. Herein, a bimodal signal amplification platform which relies on acoustofluidics‐induced enrichment of nanoparticles is introduced. The dual‐function...
In article number 2004843, Guangliang Chen, Jun Huang, Changsheng Song, and co‐workers demonstrate that Mulberry‐like Ni12P5‐Ni4Nb5P4 nanocrystals with rich heterointerfaces and phase edges are successfully fabricated on carbon cloth, which is enabled by intentional defect creation by atmospheric pressure dielectric barrier discharge plasma (PCC). The obtained Ni12P5‐Ni4Nb5P4/PCC electrocatalyst maintains...
Bimetallic phosphate electrocatalysts on carbon‐cloth support are among the most promising industry‐relevant solutions for electrocatalytic hydrogen production. To address the persistent issue of hetero‐phase interfacing on carbon support while ensuring high activity and stability, a low‐cost, high‐performance hydrogen evolution reaction (HER) electrocatalyst is developed. Bi‐phase Ni12P5‐Ni4Nb5P4...
This research reports gold (Au) and platinum (Pt) nanocatalysts spatially confined in a porous carbon nanosphere as a new solar‐driven carbon nanoreactor (CNR). The CNRs have confined size (≈100 nm), high specific surface area, and high thermal and electrical conductivity. The black color of CNR can improve the energy harvest efficiency of the solar irradiation to thermal energy within each nanoreactor...
In article number 1801996, Zhiguo Qu, Tony Jun Huang, and co‐workers develop an acoustic‐based fluorescence‐activated cell sorter (FACS), in which cells are focused and deflected by standing surface acoustic waves, and are detected with an in‐plane optical fiber system. The cell‐focusing, cell‐detection, and cell‐deflection units of the FACS are integrated onto a small chip and work cooperatively...
Microfluidic fluorescence‐activated cell sorters (μFACS) have attracted considerable interest because of their ability to identify and separate cells in inexpensive and biosafe ways. Here a high‐performance μFACS is presented by integrating a standing surface acoustic wave (SSAW)‐based, 3D cell‐focusing unit, an in‐plane fluorescent detection unit, and an SSAW‐based cell‐deflection unit on a single...
Nature has long offered human beings useful materials. In article number 1801657, Chuan Fei Guo and co‐workers use dried leaves and petals as the dielectric layer in a capacitive‐type electronic skin (e‐skin), which exhibits high sensitivity and high stability over cyclic bends, and can be used for motion monitoring and tactile sensing. This work offers a general strategy for a green, cost‐effective,...
Nature has long offered human beings with useful materials. Herein, plant materials including flowers and leaves have been directly used as the dielectric material in flexible capacitive electronic skin (e‐skin), which simply consists of a dried flower petal or leaf sandwiched by two flexible electrodes. The plant material is a 3D cell wall network which plays like a compressible metamaterial that...
The study of circulating tumor cells (CTCs) offers pathways to develop new diagnostic and prognostic biomarkers that benefit cancer treatments. In order to fully exploit and interpret the information provided by CTCs, the development of a platform is reported that integrates acoustics and microfluidics to isolate rare CTCs from peripheral blood in high throughput while preserving their structural,...
In article number 1801131, Ming Dao, Tony Jun Huang, and co‐workers develop an acoustofluidic device design, which employs an acoustic enclosure and a divider, and enables the isolation of rare circulating tumor cells from peripheral blood in high throughput while preserving their structural, biological, and functional integrity.
With extremely high specific capacity, silicon has attracted enormous interest as a promising anode material for next‐generation lithium‐ion batteries. However, silicon suffers from a large volume variation during charge/discharge cycles, which leads to the pulverization of the silicon and subsequent separation from the conductive additives, eventually resulting in rapid capacity fading and poor cycle...
Supported metal nanoparticles play key roles in nanoelectronics, sensors, energy storage/conversion, and catalysts for the sustainable production of fuels and chemicals. Direct observation of the dynamic processes of nanocatalysts at high temperatures and the confinement of supports is of great significance to investigate nanoparticle structure and functions for practical utilization. Here, in situ...
A polydimethylsiloxane microchannel featuring sidewall sharp‐edge structures and bare channels, and a piezoelement transducer is attached to a thin glass slide. When an external acoustic field is applied to the microchannel, the oscillation of the sharp‐edge structures and the thin glass slide generate acoustic streaming flows which in turn rotate single cells and C. elegans in‐plane and out‐of‐plane...
On page 5120, T. J. Huang and co‐workers attach a polydimethylsiloxane microchannel featuring sidewall sharp‐edge structures and bare channels, and a piezoelement transducer, to a thin glass slide. Oscillation of polydimethylsiloxane sidewall sharp‐edge structures generates acoustic streaming flows, which in turn rotate single cells and C. elegans inside a microchannel.
Micro‐ to nanosized droplets of liquid metals, such as eutectic gallium indium (EGaIn) and Galinstan, have been used for developing a variety of applications in flexible electronics, sensors, catalysts, and drug delivery systems. Currently used methods for producing micro‐ to nanosized droplets of such liquid metals possess one or several drawbacks, including the lack in ability to control the size...
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