Thermally Controlled, Active Imperceptible Artificial Skin in Visible‐to‐Infrared Range

Inspired by cephalopods’ extraordinary ability to hide into any background, multispectral imperceptible artificial skin is developed to enable the human skin to actively blend into the background environment in the infrared and visible integrated spectrum range by simple temperature control of the thermochromic layer with a bi‐functional (cooling/heating)...

11h

Functionalized Zn@ZnO Hexagonal Pyramid Array for Dendrite‐Free and Ultrastable Zinc Metal Anodes

A Zn hexagonal pyramid array coated with a functionalized ZnO layer (Zn@ZnO HPA) prepared via a periodic anodizing process acts as a Zn metal electrode for inherently safe Zn ion aqueous batteries. The unique Zn@ZnO HPA anode shows improved stability without dendrite formation owing to the large surface area and guided Zn ion plating. Abstract...

11h

SAM Functionalized ZnO Nanowires for Selective Acetone Detection: Optimized Surface Specific Interaction Using APTMS and GLYMO Monolayers

Vapor–liquid–solid grown zinc oxide nanowire sensors functionalized with (3‐aminopropyl)trimethoxysilane monolayer exhibit excellent selectivity and detection limit of 0.5 ppm toward acetone due to enhanced surface specific interactions between acetone and amine groups and hence demonstrate a potential for acetone exhaled breath analysis. Abstract...

11h

Highly Efficient, Bright, and Stable Colloidal Quantum Dot Short‐Wave Infrared Light‐Emitting Diodes

Multibandgap PbS colloidal quantum dot‐based light‐emitting diodes offer compelling performance in the short‐wave infrared region. This report shows that the optimization of energy band offset between the carrier supply matrix and the emitter quantum dots leads to high quantum efficiency at high radiance and very high operational stability due to improved...

11h

Cellulose Nanofibrils Enhanced, Strong, Stretchable, Freezing‐Tolerant Ionic Conductive Organohydrogel for Multi‐Functional Sensors

A polyvinyl alcohol/cellulose nanofibril organohydrogel with simultaneously improved strength, toughness, and ionic conductivity is rationally designed. The organohydrogel shows outstanding freezing tolerance while maintains high ionic conductivity (1.1 S m−1) at −70 °C due to the presence of high dielectric dimethyl sulfoxide‐water binary solvent....

22h

Printable and Large‐Area Organic Solar Cells Enabled by a Ternary Pseudo‐Planar Heterojunction Strategy

The ternary pseudo‐planar heterojunction strategy is an efficient strategy to optimize the morphology and enlarge the vertical phase separation of active layer, affording the highest power conversion efficiency of 14.25%. Abstract Bulk heterojunction (BHJ) processing technology has had an irreplaceable role in the development of organic solar...

22h

A Na3V2(PO4)2O1.6F1.4 Cathode of Zn‐Ion Battery Enabled by a Water‐in‐Bisalt Electrolyte

A hybrid‐valence vanadium compound of Na3V2(PO4)2O1.6F1.4 is investigated as a Zn hosting cathode. Thanks to the neutral “water‐in‐bisalts” electrolyte comprising 25 m ZnCl2 + 5 m NH4Cl, the Na3V2(PO4)2O1.6F1.4 || Zn cell provides an alternative for aqueous zinc ion batteries with high voltage and long cyclability. Abstract Aqueous zinc‐ion...

1d

Multibranched Octupolar Module Embedded Covalent Organic Frameworks Enable Efficient Two‐Photon Fluorescence

Octupolar three‐branched modules embedded in a 2D cyano‐sp2c‐conjugated framework enable two‐photon luminescent covalent organic frameworks (COFs) combining a large two‐photon absorption cross section of 1225 GM and intense one‐photon fluorescence with a quantum yield of 27.2% in solid state and 38.1% in tetrahydrofuran—superior to almost all reported...

1d

Images of a First‐Order Spin‐Reorientation Phase Transition in a Metallic Kagome Ferromagnet

A metallic magnet imaged in exquisite detail shows that upon cooling, the new state emerges at the boundaries of the magnetic domains characteristic of the high‐temperature state, then propagates to the center of the magnetic domains, and expands upon further cooling. The images demonstrate that both states coexist in a large temperature window, which...

1d

Unveiling the Correlation between the Crystalline Structure of M‐Filled CoSb3 (M = Y, K, Sr) Skutterudites and Their Thermoelectric Transport Properties

The evolution of the structural parameters obtained from synchrotron X‐ray powder diffraction (SXRD) data on single‐filled n‐type CoSb3 thermoelectric skutterudites suggests a main dependence on the filling fraction, regardless of the cationic size or valence state of the filler. Sr0.48Co4Sb12 exhibits the less distorted [Sb4] rings, associated with...

1d