Results 251 to 260 of about 43,670,075 (292)

Singular lensing from the scattering on special space-time defects. [PDF]

open access: yesEur Phys J C Part Fields, 2018
Mavromatos NE, Papavassiliou J.
europepmc   +1 more source

Carbon dots in electrochemiluminescence: Mechanisms, interface engineering, and bioanalytical applications

open access: yesResponsive Materials, EarlyView.
Carbon dots are emerging as versatile electrochemiluminescent nanomaterials whose structure, surface states, and interfacial design jointly determine ECL pathways and performance. This review highlights how mechanistic understanding and materials engineering enable programmable CD‐ECL systems for bioanalysis, imaging, and future intelligent analytical ...
Yuhan Zhao, Zixuan Chen, Jun‐Jie Zhu
wiley   +1 more source

Recognized and Realigned: A Veteran Teacher's Moves to Leverage Familiar Forms of Epistemic Agency While Using Next Generation Science Standard Inspired Materials

open access: yesScience Education, EarlyView.
ABSTRACT For 3 days, Amy, a veteran middle school science teacher, struggled to engage students in using Next Generation Science Standards (NGSS)‐aligned curriculum designed to facilitate scientific argumentation. Amy consistently used productive framing bids or cues to redirect students from “doing school” toward sensemaking and “doing science ...
Christine Hirst Bernhardt, Andy Elby
wiley   +1 more source

Thermosensitive Nanostructured Coacervates Developed by Mixing ABA‐ and AB‐Block Copolymers and Their Unique Sustained Release of Nano‐Micelles in a Regulated Manner

open access: yesSmall, EarlyView.
Polyion complex micelles composed of blends of ABA and AB block copolymers can form coacervates with a hexagonally packed cylinder nanostructure after heating. The resulting coacervates can release the micelles under physiological conditions in a zero‐order kinetics, possessing cargo proteins.
Takumi Egashira   +9 more
wiley   +1 more source

Characterization of the Pore Environments in Covalent Organic Frameworks by Dynamic Spin Probe Exchange

open access: yesSmall, EarlyView.
Covalent organic frameworks (COFs) with alkyl or triethylene glycol pore linings are probed with water‐dissolved nitroxide radicals using CW EPR spectroscopy. Adsorption affinity, local polarity, and radical concentration inside the pores are quantified, revealing hydrogen bonding, dipolar, and π‐π interactions that govern guest binding, which ...
Sebastian Michler   +5 more
wiley   +1 more source

Synergistic Interplay of Fe and Co Single‐Atom Sites Spatially Separated on g‐C3N4 for Enhanced Electrochemical Performance in Li‐O2 Batteries

open access: yesSmall, EarlyView.
Bimetallic (Fe, Co) single‐atom catalyst supported on graphitic carbon nitride was synthesized through a mechanochemical route followed by pyrolysis. The synergistic interaction between metal atoms optimizes the electronic interaction and provides abundant active sites, accelerating oxygen reduction reaction/oxygen evolution reaction kinetics and ...
Bilal Ahmad   +11 more
wiley   +1 more source

Wrinkling Pickering Emulsions via Endospore Germination

open access: yesSmall, EarlyView.
This study presents a method for creating Pickering emulsions with long shelf life using bacterial endospores as stabilizers. Upon exposure to favorable conditions, spores germinate, swelland trigger wrinkling on droplet surfaces. The resulting patterns depend on initial interfacial coverage, enabling the change of droplet morphology on demand.
Yiyao Hu   +7 more
wiley   +1 more source

Genetically mediated associations between chronotype and neuroimaging phenotypes in the UK Biobank: a Mendelian randomisation study

open access: yes, 2023
Williams JA   +6 more
europepmc   +1 more source

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