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Epithelial to Mesenchymal Transition
The cover image shows that the malignant cells generated by the epithelial‐mesenchymal transition (EMT) are breaking away from the benign ones and spreading elsewhere. In article number 2106498, using single‐particle tracking of β1‐integrins labelled with fluorescent quantum dots, Yan Wei, Peng‐Ye Wang, Hui Li, and co‐workers discover a significantly enhanced diffusion...
π‐Conjugated polyelectrolytes (CPEs) have been studied as interlayers on top of a separate hole transport layer (HTL) to improve the wetting, interfacial defect passivation, and crystal growth of perovskites. However, very few CPE‐based HTLs have been reported without rational molecular design as ideal HTLs for perovskite solar cells (PeSCs). In this study, the authors synthesize a triphenylamine‐based...
Solid‐state fluoride‐ion batteries (FIBs) circumvent multiple formidable bottlenecks of lithium‐ion batteries, but their overall performance remains inferior due to the absence of appropriate solid electrolytes. Presently the conductivity of most solid electrolytes for FIBs is too low to enable room‐temperature cycling, while the few sufficiently conductive ones only allow for very low discharge voltages...
Single‐atom catalysts have attracted attention in the past decade since they maximize the utilization of active sites and facilitate the understanding of product distribution in some catalytic reactions. Recently, this idea has been extended to single‐atom nanozymes (SAzymes) for the mimicking of natural enzymes such as horseradish peroxidase (HRP) often used in bioanalytical applications. Herein,...
As a typical battery‐type material, CuCo2S4 is a promising candidate for supercapacitors due to the high theoretical specific capacity. However, its practical application is plagued by inherently sluggish ion diffusion kinetics and inferior electrical transport properties. Herein, sulfur vacancies are incorporated in CuCo2S4 hollow nanoarchitectures (HNs) to accelerate redox reactivity. Experimental...
Pursuing high areal energy density and developing scalable fabrication strategies of micro‐batteries are the key for the progressive printed microelectronics. Herein, the scalable fabrication of multi‐layer printable lithium ion micro‐batteries (LIMBs) with ultrahigh areal energy density and exceptional flexibility is reported, based on highly conductive and mechanically stable inks by fully incorporating...
A strategy to synthesize water‐soluble and fluorescent flavonoid‐silica nanocomposites (FSiNCs) simultaneously featuring anti‐tumor and anti‐bacterial abilities is developed. Furthermore, it is demonstrated that the therapeutic effects of FSiNCs are associated with the selective accumulation of reactive oxide species in both tumor and bacteria cells. Following that, the resultant FSiNCs are incorporated...
Double‐stranded DNA (dsDNA) fragments exhibit noncovalent attractive interactions between their tips. It is still unclear how DNA liquid crystal self‐assembly is affected by such blunt‐end attractions. It is demonstrated that stiff dsDNA fragments with moderate aspect ratio can specifically self‐assemble in concentrated aqueous solutions into different types of smectic mesophases on the basis of selectively...
The surgical removal of lesions is among the most common and effective treatments for atherosclerosis. It is often the only curative treatment option, and the ability to visualize the full extent of atherosclerotic plaque during the operation has major implications for the therapeutic outcome. Fluorescence imaging is a promising approach for the inspection of atherosclerotic plaques during surgery...
Structural modulation of core‐shell silver nanoclusters from the inside is a huge challenge but of great importance in their syntheses. Herein, two silver nanoclusters [Ag3S9@Ag42] (SD/Ag45b) and [Ag9S9@Ag42] (SD/Ag51a) are isolated in the presence of different kinds of sulfonic acids. Uniquely, SD/Ag45b and SD/Ag51a show typical core‐shell structures with the similar Ag42 shell but different cores...
Polymeric devices capable of releasing submicron particles (subMP) on demand are highly desirable for controlled release systems, sensors, and smart surfaces. Here, a temperature‐memory polymer sheet with a programmable smooth surface served as matrix to embed and release polystyrene subMP controlled by particle size and temperature. subMPs embedding at 80 °C can be released sequentially according...
Nitrogen‐doped carbon materials with abundant defects and strong potassium adsorption ability have been recognized as potential anodes for potassium ion batteries (PIBs). However, the limited content and uncontrolled type of nitrogen‐doped sites hinder the further performance improvement of PIBs. Herein, this work proposes nitrogen phosphorous co‐doped hollow carbon nanofibers (PNCNFs) derived from...
Polyetheretherketone (PEEK) is widely used in orthopedic and craniomaxillofacial surgeries as it exhibits excellent biocompatibility, mechanical property, and chemical stability. However, its clinical application is limited by the biological inertness of PEEK. Numerous efforts have been made to improve the bioactivity of this polymer over the years. However, modification methods that can not only...
Resin derived hard carbons (HCs) generally demonstrate remarkable electrochemical performance for both sodium ion batteries (SIBs) and potassium‐ion batteries (KIBs), but their practical applications are hindered by their high price and high temperature pyrolysis (≈1500 °C). Herein, low‐cost pitch is coated on the resin surface to compromise the cost, and meanwhile manipulate the microstructure at...
Foam Thermoelectric Generators
An elastic and durable thermoelectric generator using carbon nanotubes/polydimethylsiloxane foam shows stable power generation in the real stress environment of an automobile engine, where compressive and vibrational stresses occur continuously and irregularly. The proposed approach by Song Yun Cho, Bumjoon J. Kim, and co‐workers (article number 2106108) will significantly...
Cell morphology and migration depend critically on the adhesions on the extracellular matrix (ECM), determined by the transmembrane protein integrins. The epithelial to mesenchymal transition (EMT) is a prominent transformation process in which adherent cells acquire a mesenchymal phenotype and a promoted migration. EMT plays important roles in embryonic development and cancer metastasis, and its...
PEEK Implants
In article number 2105589, Chunhui Sun, Chao Liu, Hong Liu, and co‐workers establish patterned nanorod arrays on a polyetheretherketone (PEEK) surface. The patterned nanorod arrays could effectively regulate the response of the filopodia of cells, so as to guide the change in cell morphology, and, thereby, could affect osteogenesis. This PEEK implant can be widely used to fabricate materials...
Structural design of the solar‐absorbing layer has been considered as one of the most direct and effective approaches for improving the solar steam generation performance by maximizing the absorption of sunlight, but great challenges in manipulation simplification and structure controllability still remain. Herein, a polyester (PET) fabric covered with a vertically aligned 3D tower‐like ferrosoferric...
Using a simple, rapid solvent evaporation process, the authors produced 3D carbon nanotube (CNT)/polydimethylsiloxane (PDMS) foams with both high thermoelectric (TE) and good mechanical performance and used them to fabricate highly flexible and durable TE generators. The numerous pores and interfaces in the CNT/PDMS foams, which have porosities exceeding 87%, afford very low thermal conductivity of...
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