Results 61 to 70 of about 15,054 (263)

Enhanced heat transmission in a triangular enclosure with a rotating cooled wall using Nano-Encapsulated Phase Change Material nanofluid under mixed convection

open access: yesCase Studies in Thermal Engineering
Maximizing heat transfer rates within enclosed cavities is of paramount importance in various engineering applications. This study focuses on enhancing heat transmission efficiency through forced convection within a triangular cavity containing a ...
Abderrahmane Aissa   +5 more
doaj   +1 more source

Numerical Study on Flow Field and Abundance Field of a Binary Gas Mixture with Large Mass Number Difference

open access: yesJournal of Isotopes, 2023
In study of the flow of an isotopic gas mixture in a rotating cylinder, the isotope approximation method is generally introduced to decouple the flow problem of the mixed gas and the component transport problem by considering the small molecular weight ...
TIAN Songjie;GU Zhiyong;GUO Zixue
doaj  

High‐Performance n‐Type Organic Thermoelectrics Enabled by Control Over Microstructure, Orientation and Contact Plane in Naphthalenediimide‐Bithiazole‐Copolymer Films

open access: yesAdvanced Functional Materials, EarlyView.
Effective control over the crystalline contact plane and microstructure of a naphthalenediimide‐bithiazole copolymer enables high‐performance n‐type thermoelectrics. While rubbing alignment induces a detrimental edge‐on orientation, subsequent solvent vapor‐induced re‐orientation facilitates a favorable mixed face‐on/edge‐on morphology.
Suhao Wang   +13 more
wiley   +1 more source

Catalytically Enhanced Near Room‐Temperature Hydrogen Sensing Using Pd‐ZnO Colloidal Crystals

open access: yesAdvanced Functional Materials, EarlyView.
Pd‐decorated ZnO colloidal crystal monolayers demonstrate excellent performance across a wide hydrogen concentration range at 33°C, with high selectivity and reproducible device fabrication. The sensors show strong responses even at low‐ppm H2 concentrations and an ultra‐low detection limit of 82 ppb, indicating their suitability for diverse hydrogen ...
Hamidah Alluhaybi   +13 more
wiley   +1 more source

Meniscus‐Guided Soft‐Lithographic Assembly of Grid‐Type Molecular Martensite Films for Single‐Crystal‐Like Actuation

open access: yesAdvanced Functional Materials, EarlyView.
A meniscus‐guided microtransfer molding strategy enables scalable fabrication of grid‐type molecular martensite films with b‐axis‐correlated preferential texture. Sequential growth across microchannel intersections creates structurally continuous grids and robust thermoelastic actuation (∼11% strain, > 50 cycles, maximum force density: 7.1 × 109 N m−3).
Sooyeon Ra   +15 more
wiley   +1 more source

On the stability of compressible differentially rotating cylinders - II [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1987
Summary: The stability of differentially rotating fluid cylinders obeying a polytropic equation of state is tested. Non-axisymmetric perturbations induce dynamical instabilities discovered previously by \textit{J. C. B. Papaloizou} and \textit{J. E. Pringle} [ibid. 208, 721-750 (1984; Zbl 0562.76106); ibid.
openaire   +2 more sources

Tailored Diketopyrrolopyrrole Derivatives for Efficient Deep‐Red Organic Lasers

open access: yesAdvanced Functional Materials, EarlyView.
Tailored diketopyrrolopyrrole derivatives exhibit high stable amplified spontaneous emission with single or dual bands. Incorporated into distributed‐feedback lasers based on one‐ and two‐dimensional dichromated‐gelatin diffractive gratings, these materials provide a robust, flexible platform for integrated organic deep‐red light sources. ABSTRACT Deep‐
Pablo Pasqués‐Gramage   +10 more
wiley   +1 more source

Wearable Kirigami‐Apertured Capacitive Sensors for Continuous Cardiac Volumetric Monitoring

open access: yesAdvanced Functional Materials, EarlyView.
A wearable kirigami‐apertured carbon nanotube‐paper composite (K‐CPC) capacitive sensor enables cardiac volumetric monitoring. The kirigami process creates a central aperture with cantilevered fibers that confine the electric field, enhancing both sensitivity and lateral resolution.
Yu‐Jen Cheng   +4 more
wiley   +1 more source

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