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The synthesis and characterization of UiO‐type metal–organic framework nanoparticles (NMOFs) composed of Zr4+ ions bridged by 2,2′‐bipyridine‐5,5′‐dicarboxylic acid ligands and the postmodification of the NMOFs with Cu2+ ions are described. The resulting Cu2+‐modified NMOFs, Cu2+‐NMOFs, exhibit peroxidase‐like catalytic activities reflected by the catalyzed oxidation of Amplex‐Red to the fluorescent...
In article number 1702990, Peer Fischer, Frank Neubrech, Na Liu, and co‐workers fabricate three‐dimensional palladium helices by nanoglancing angle deposition exhibiting strong circular dichroism for sensitive hydrogen detection in the flammable range. The linearity of the sensor response is significantly improved using palladiumgold hybrid helices. Such a chiral plasmonic sensor scheme is of potential...
In this article, a chiral plasmonic hydrogen‐sensing platform using palladium‐based nanohelices is demonstrated. Such 3D chiral nanostructures fabricated by nanoglancing angle deposition exhibit strong circular dichroism both experimentally and theoretically. The chiroptical properties of the palladium nanohelices are altered upon hydrogen uptake and sensitively depend on the hydrogen concentration...
Wearable healthcare presents exciting opportunities for continuous, real‐time, and noninvasive monitoring of health status. Even though electrochemical and optical sensing have already made great advances, there is still an urgent demand for alternative signal transformation in terms of miniaturization, wearability, conformability, and stretchability. Mechano‐based transductive sensing, referred to...
Here novel chromogenic photonic crystal sensors based on smart shape memory polymers (SMPs) comprising polyester/polyether‐based urethane acrylates blended with tripropylene glycol diacrylate are reported, which exhibit nontraditional all‐room‐temperature shape memory (SM) effects. Stepwise recovery of the collapsed macropores with 350 nm diameter created by a “cold” programming process leads to easily...
The controlled functionalization of surfaces with proteins is crucial for many analytical methods in life science research and biomedical applications. Here, a coating for silica‐based surfaces is established which enables stable and selective immobilization of proteins with controlled orientation and tunable surface density. The coating is reusable, retains functionality upon long‐term storage in...
Effective light trapping at the nanoscale is vital for efficient photoelectrochemical (PEC) applications. Photonic and plasmonic resonators are the two most promising approaches for this purpose, and the synergetic combination of these two resonators will tail the propagation lengths of incident light along with field enhancements, and thus presents further enhanced light‐trapping activity. Herein,...
Graphene has been employed as an excellent support for metal nanomaterials because of its unique structural and physicochemical properties. Silver nanoparticles (AgNPs) with exceptional properties have received considerable attention in various fields; however, particle aggregation limits its application. Therefore, the combination of AgNPs and graphene based nanocomposites (Ag–graphene based nanocomposites)...
In article number 1801145, Jeong‐Hyun Cho and co‐workers review the detection mechanisms in sub‐millimeter scale three‐dimensional (3D) sensors that exhibit unique spatial sensing capabilities based on their physical configuration. The review draws parallels between biological and man‐made 3D sensors based on their geometry and sensory functionalities to provide vital clues for the further advancement...
A vast majority of existing sub‐millimeter‐scale sensors have a planar, 2D geometry as a result of conventional top‐down lithographic procedures. However, 2D sensors often suffer from restricted sensing capability, allowing only partial measurements of 3D quantities. Here, nano/microscale sensors with different geometric (1D, 2D, and 3D) configurations are reviewed to introduce their advantages and...
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