Results 141 to 150 of about 440,511 (349)

Duct-lining materials and concepts [PDF]

open access: yes
Acoustic characteristics evaluation of duct lining materials and design of acoustically absorptive aircraft inlets and fan ...
Feder, E.   +2 more
core   +1 more source

Topology in Biological Piezoelectric Materials

open access: yesAdvanced Materials, EarlyView.
This review summarizes the topological structures in biological piezoelectric materials, covering morphology evolution, spatial arrangement, and biomimetic strategies. These topologies modulate structure‐property relationships across multiple scales, enabling performance enhancement and multifunctional integration.
Chen Chen   +7 more
wiley   +1 more source

Development of modified vibration test criteria for qualifying space vehicle components [PDF]

open access: yes
The results of the evaluation of two response prediction methods relating to the prediction of structural responses of stiffened shell structures with or without attached components, and subjected to broadband acoustic excitations are presented.
Chang, K. Y., Kao, G. C.
core   +1 more source

Harnessing Photo‐Energy Conversion in Nanomaterials for Precision Theranostics

open access: yesAdvanced Materials, EarlyView.
Harnessing photo‐energy conversion in nanomaterials enables precision theranostics through light‐driven mechanisms such as photoluminescence, photothermal, photoelectric, photoacoustic, photo‐triggered surface‐enhanced Raman scattering (SERS), and photodynamic processes. This review explores six fundamental principles of photo‐energy conversion, recent
Jingyu Shi   +4 more
wiley   +1 more source

Omni‐Directional Assembly of 2D Single‐Crystalline Metal Nanosheets

open access: yesAdvanced Materials, EarlyView.
A versatile assembly method is developed to uniformly assemble 2D single‐crystal copper nanosheets (Cu NS) onto substrates with complex shapes via ultrasonication process. This technique leverages cavitation effects to deposit monolayer Cu NS films with minimal overlap.
Seungyeon Kim   +9 more
wiley   +1 more source

Intensive Widmannstätten Nanoprecipitates Catalyze SnTe With State‐of‐the‐Art Thermoelectric Performance

open access: yesAdvanced Materials, EarlyView.
The intensive lath‐shaped Ag2Te Widmannstätten nanoprecipitates are in situ generated in SnTe via AgPbSbTe3 alloying, and align with the formation of the parallel type and twin type interfaces. These Widmannstätten nanoprecipitates effectively scatter phonons to reduce the lattice thermal conductivity, resulting in a significantly enhanced average ZT ...
Tu Lyu   +10 more
wiley   +1 more source

Measurements of interactions between acoustic fields and nonuniform mean flow [PDF]

open access: yes, 1980
Two problems crucial to the stability of longitudinal acoustic waves in solid rocket motors are examined experimentally. The first is the dissipation of energy associated with an average flow inward at the lateral boundary.
Awad, E.   +4 more
core  

Enhanced Deformability Through Distributed Buckling in Stiff Quasicrystalline Architected Materials

open access: yesAdvanced Materials, EarlyView.
Quasi‐periodic metamaterials combine stiffness and large‐strain deformability, overcoming limitations of traditional stretching‐dominated periodic designs that are prone to global buckling instabilities and catastrophic layer collapses. By leveraging non‐uniform force chains, they achieve high isotropic stiffness, stable deformation, and remarkable ...
Matheus I. N. Rosa   +4 more
wiley   +1 more source

Medidas de imitância acústica de banda larga com estímulo chirp e tom puro em lactentes com normalidade de orelha média

open access: yesAudiology: Communication Research
RESUMO Objetivo: Caracterizar os valores de reflectância e absorvância de banda larga em lactentes com integridade de orelha média. Métodos: Foram analisados os valores de reflectância e absorvância de banda larga, para os estímulos chirp e tom puro ...
Priscila Pereira dos Santos   +4 more
doaj   +1 more source

Sol–Gel Thin Films for the Protection of Ancient Glass Artifacts: A Performance Comparison Between Inorganic and Hybrid Silica Compositions

open access: yesAdvanced Materials Interfaces, EarlyView.
This study explores the development of sol–gel coatings for archaeological glass conservation. By formulating silica‐based solutions with low acid concentrations and applying them via dip coating, protective films are prepared at room temperature. Analysis reveals that hybrid coatings with methyl and octyl groups provide superior protection against ...
Stefano Centenaro   +5 more
wiley   +1 more source

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