Results 91 to 100 of about 594,359 (210)

Rapid Joule‐Heating‐Induced Non‐Equilibrium Exsolution in Perovskite Oxides for Enhanced Photothermal CO2 Methanation

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Rapid Joule heating induces Ni—Fe exsolution from perovskite oxides, forming Ni–Fe/oxide heterointerfaces that enhance photothermal CO2 methanation activity and selectivity. Achieving selective CO2 methanation under photothermal conditions requires catalysts capable of maintaining non‐equilibrium interfacial states that balance reduction and oxidation ...
Qiankai Zhang   +9 more
wiley   +1 more source

Analysis of Size Dependence of Quality Factor of Quartz-Crystal Tuning Fork

open access: yes, 2011
We derived an approximate formula for the quality factor (Q value or Q) of a quartz-crystal tuning fork by applying the approximate calculation method developed by Landau et al. and Lifshitz et al.
Hideaki Itoh, Tatsuya Seki
core   +1 more source

A MICROGYRO WITH QUARTZ FORK SENSOR [PDF]

open access: yes, 2020
Mainly targeting the automotive application, Systron Donner's MicroGyro with quartz fork sensor uses a vibrating quartz tuning fork to sense angular rate, acting as a Coriolis sensor, coupled to a similar fork as a pickup to produce the rate output ...
Frank Wang
core  

Eigenmodes of a quartz tuning fork and their application to photoinduced force microscopy

open access: yesPhysical Review B, 2017
We examine the mechanical eigenmodes of a quartz tuning fork (QTF) for the purpose of facilitat- ing its use as a probe for multi-frequency atomic force microscopy (AFM). We perform simulations based on the three-dimensional finite element method (FEM) and compare the observed motions of the beams with experimentally measured resonance frequencies of ...
Kim, Bongsu   +4 more
openaire   +5 more sources

Photochemistry of N‐Phenyl Benzonaphthothiophene and Dinaphthothiophene Sulfoximines

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
The sequential photorelease of nitrenes and atomic oxygen [O(3P)] from N‑phenyl benzonaphthothiophene and dinaphthothiophene sulfoximines is a rare photochemical phenomenon in which two reactive intermediates can be released from a single chromophore. The sequential photorelease of nitrenes and atomic oxygen [O(3P)] is a rare photochemical phenomenon ...
Henry J. Politte   +3 more
wiley   +1 more source

Lead‐free halide perovskites for efficient light‐emitting devices

open access: yesFlexMat, EarlyView.
Overview of Lead‐free metal halide perovskites with different categories and optoelectronic application directions, including solid‐state lighting, light‐emitting diodes, piezoluminescence, flexible electronics, scintillators and CPL emitters. Abstract Lead halide perovskites exhibit promising optoelectronic properties for optoelectronic applications ...
Yueqi Shen   +9 more
wiley   +1 more source

Signal electronics for an atomic force microscope equipped with a double quartz tuning fork sensor

open access: yes, 2006
Signal electronics equipped with a bandpass filter phase detector for noncontact atomic force microscopy (ncAFM) has been developed. A double quartz tuning fork assembly is used as a force sensor, where one fork serves as a dither tuning fork, while the ...
H.-J. Freund   +5 more
core   +1 more source

Reverse evolution of fluorine and side chains in bisisoindigo‐based copolymers enabling electron mobility exceeding 7 cm2·V−1·s−1

open access: yesFlexMat, EarlyView.
Abstract We report the design and synthesis of a series of bisisoindigo‐based donor–acceptor (D–A) copolymers, P4F18, P4F10, P2F18, and P2F10. By reverse evolution of fluorine substitution and side‐chain structure, we effectively tuned the frontier molecular orbital energy levels, intermolecular interactions, molecular self‐assembly, and thus charge ...
Keli Shi   +11 more
wiley   +1 more source

Biosensors for Food Safety and Adulteration Monitoring: Applications, Smart Packaging Integration, and Pathways to Intelligent, Field‐Deployable Detection Systems

open access: yesFood Safety and Health, EarlyView.
Biosensors enable rapid, sensitive, and portable detection of pathogens, contaminants, allergens, and food adulteration. Integration with smart packaging, smartphones, IoT, and machine learning supports real‐time monitoring and intelligent decision‐making, whereas microfluidics, biodegradable materials, explainable AI, and blockchain offer pathways ...
Mohima Akther Any   +7 more
wiley   +1 more source

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