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On page 1840, J.‐Y. Lee, I.‐K. Oh and co‐workers present a tunable frequency selective surface that selectively transmits incident electromagnetic waves in a designed frequency band. This surface was newly developed utilizing highly stretchable silver‐nanowire electrodes and pre‐stretched dielectric elastomer with a butterfly‐shaped aperture pattern.
Cellular uptake of nanomaterials from the bloodstream and their subsequent distribution in tissue is a crucial step for diverse drug delivery approaches. On page 1882, M. Rehberg and co‐workers describe the presence of microtubule‐containing membrane nanotubes connecting perivascular and tissue‐resident macrophages in skeletal muscle tissue. Perivascular macrophages are able to sample nanoparticles...
A simple strategy for the synthesis of heteroatom‐doped porous carbon materials (CMs) via using ionic liquid (IL)‐doped alkali organic salts as small molecular precursors is developed. Doping of alkali organic salts (such as sodium glutamate, sodium tartrate, and sodium citrate) with heteroatoms containing ILs (including 1‐butyl‐3‐methylimidazolium chlorine and 3‐butyl‐4‐methythiazolebromination)...
A simple, wet‐chemical method for the surface functionalization of carbon nanotubes with hydrophilic groups is introduced in Li‐doped ZnO by S. Jeong, M. H. Ham, and co‐workers, on page 1859. This results in the uniform spatial distribution of single‐walled carbon nanotubes in ultrathin ZnO‐based matrix oxides, and facilitates high‐mobility, low‐cost metal‐oxide‐based thin‐film transistors. This approach...
The development of bioinspired interfacial materials with enhanced drop mobility that mimic the innate functionalities of nature will have significant impact on energy, environment, and global healthcare. On page 1825, Z. Wang and co‐workers highlight recent advances in the fundamental understanding, as well as practical applications of bio‐inspired interfacial materials, with an emphasis on drop...
Circulating tumor cells (CTCs) offer tremendous potential for the detection and characterization of cancer. A key challenge for their isolation and subsequent analysis is the extreme rarity of these cells in circulation. Here, a novel label‐free method is described to enrich viable CTCs directly from whole blood based on their distinct deformability relative to hematological cells. This mechanism...
A bioinspired adenosine activated nanodevice is demonstrated in which the conformations of the designed aptamer change and cause signal transmission according to the emergence of adenosine. This bioinspired system exhibits very high response ratios (activated/nonactivated ratio up to 614) and excellent stability and reversibility, and shows promising applications in the fields of biosensors, pharmaceutica,...
The high‐yield and scalable production of single‐layer ternary transition metal dichalcogenide nanosheets with ≈66% of metallic 1T phase, including MoS2xSe2(1–x) and MoxW1–xS2 is achieved via electrochemical Li‐intercalation and the exfoliation method. Thin film MoS2xSe2(1‐x) nanosheets drop‐cast on a fluorine‐doped tin oxide substrate are used as an efficient electrocatalyst on the counter electrode...
Porous SnO2 submicrocubes (SMCs) are synthesized by annealing and HNO3 etching of CoSn(OH)6 SMCs. Bare SnO2 SMCs, as well as bare commercial SnO2 nanoparticles (NPs), show very high initial discharge capacity when used as anode material for lithium‐ion batteries. However, during the following cycles most of the Li ions previously inserted cannot be extracted, resulting in considerable irreversibility...
Surface‐functionalized carbon nanotubes (CNTs) are introduced into lithium‐doped ZnO thin‐film transistors (TFTs) as an alternative to the conventional incorporation of an expensive element, indium. The crucial role of surface functionalization of CNTs is clarified with the demonstration of indium‐free ZnO‐based TFTs with a field‐effect mobility of 28.6 cm2 V−1 s−1 and an on/off current ratio of 9...
A maskless and programmable direct electron beam writing method is reported for making high‐precision superhydrophilic–superhydrophobic wetting patterns with 152° contact angle contrast using an environmental scanning electron microscope (ESEM). The smallest linewidth achieved is below 1 μm. The reported effects of the electron beam induced local plasma may also influence a variety of microscopic...
Graphene‐supported mesoporous carbons with rich nitrogen self‐doped active sites (N‐MC/rGO) are prepared by direct pyrolysis of a graphene‐oxide‐supported polymer composite embedded with massive, evenly distributed amorphous FeOOH that serve as efficient thermally removable templates. The resulting N‐MC/rGO catalysts exhibit high surface areas and apparent electrocatalytic activity for oxygen reduction...
The development of bioinspired interfacial materials with enhanced drop mobility that mimic the innate functionalities of nature will have a significant impact on the energy, environment and global healthcare. Despite extensive progress, state of the art interfacial materials have not reached the level of maturity sufficient for industrial applications in terms of scalability, stability, and reliability...
An active, frequency selective surface utilizing a silver‐nanowire‐coated dielectric elastomer with a butterfly‐shaped aperture pattern is realized by properly exploiting the electroactive control of two antagonistic functions (stretching vs compression) on a patterned dielectric elastomer actuator.
So‐called membrane nanotubes are cellular protrusions between cells whose functions include cell communication, environmental sampling, and protein transfer. It has been previously reported that systemically administered carboxyl‐modified quantum dots (cQDs) are rapidly taken up by perivascular macrophages in skeletal muscle of healthy mice. Expanding these studies, it is found, by means of in vivo...
Piezoelectric fiber‐based generators are prepared by combining two distinctive materials — poly(vinlyidene fluoride) fibers and monolayer/bilayer graphene. Novelty lies in the replacement of opaque metal electrodes with transparent graphene electrodes which enable the graphene‐piezoelectric fiber generator to exhibit high flexibility and transparency as well as a great performance with an achievable...
An aqueous‐based microcompartmentalized model involving the integration of partially hydrophobic Fe(III)‐rich montmorillonite (FeM) clay particles as structural and catalytic building blocks for colloidosome membrane assembly, self‐directed membrane remodeling, and signal‐induced protocell communication is described. The clay colloidosomes exhibit size‐ and charge‐selective permeability, and show...
Infectious diseases and the increasing threat of worldwide pandemics have underscored the importance of antibiotics and hygiene. Intensive efforts have been devoted to developing new antibiotics to meet the rapidly growing demand. In particular, advancing the knowledge of the structure–property–activity relationship is critical to expedite the design and development of novel antimicrobial with the...
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