Results 71 to 80 of about 984,214 (255)

Tunable Perforated Panel Sound Absorbers for Variable Acoustics Room Design

open access: yesApplied Sciences
Variable acoustics systems are promising engineering developments for multi-purpose rooms and workspaces in many buildings. However, due to space requirements associated with most of the tuning devices used for that purpose, these solutions are hardly ...
Jesús Carbajo   +7 more
doaj   +1 more source

“Smelltronics”—From Gas to Smell Sensing

open access: yesAdvanced Materials, EarlyView.
The emerging field of smelltronics, encompassing sensing technologies for complex volatile organic compounds, holds significant potential for extracting valuable chemical information. It facilitates the noninvasive, real‐time monitoring of humans, food, and the environment.
Takeshi Ono   +7 more
wiley   +1 more source

Utilization and Study of Raw Groundnut Shell as a Source of Sound Absorbing Material

open access: yesJournal of Natural Fibers, 2022
Natural biodegradable materials have the potential of an alternative traditional sound-absorbing material. These materials have the advantages of low cost, light in weight, easily available, eco-friendly, and nonpolluting.
Ulhas A. Malawade   +3 more
doaj   +1 more source

Laser‐Assisted Phase Engineering of 2D MoS2 for Efficient Solution‐Processed Electronics

open access: yesAdvanced Materials, EarlyView.
Here, local laser‐assisted phase transition from solution‐processed phase‐pure 1T′ to 2H MoS2 is shown to critically depend on the irradiation atmosphere. While processing in air leads to damaged insulating regions, inert conditions yield semiconducting 2H domains, enabling direct field‐effect transistor patterning with optimized lateral 1T′‐2H MoS2 ...
Anna Zhuravlova   +10 more
wiley   +1 more source

Kajian tentang Kemungkinan Pemanfaatan Bahan Serat Ijuk sebagai Bahan Penyerap Suara Ramah Lingkungan

open access: yesJurnal Rekayasa Kimia & Lingkungan, 2009
The probability of application of palm fibre from arenga pinnata appear as best treatment for sound absorption material which can be used in controlling noise.
Zulfian Zulfian, Muhammad Sajidin
doaj   +2 more sources

Wearable Morphology‐Adaptive in‐Ear Device With Active Cleansing Capability for Multimodal Health Monitoring

open access: yesAdvanced Materials, EarlyView.
We present SCIENCE, an in‐ear multimodal physiological monitor featuring two key innovations. Water‐triggered morphological expansion (a 2‐mm cylinder to a 9‐mm spindle) achieves conformal adaptation across complex canal geometries. Simultaneously, active biofouling mitigation disrupts cerumen barriers, reducing sensor‐skin impedance by 20%.
Shuyun Zhuo   +3 more
wiley   +1 more source

An Acoustic Reconstruction of Sistine Chapel in Rome at the Time of Leo X: The Role of Tapestries

open access: yesHeritage
The Sistine Chapel, originally designed to accommodate papal ceremonies, featured a system for hanging tapestries that ensured they were deployed according to the liturgical calendar.
Francesco Martellotta, Lisa Pon
doaj   +1 more source

An Influence of the Wall Acoustic Impedance on the Room Acoustics. The Exact Solution

open access: yesArchives of Acoustics, 2017
The Fourier method is applied to the description of the room acoustics field with the combination of uniform impedance boundary conditions imposed on some walls.
Adam BRAŃSKI   +2 more
doaj   +1 more source

Breaking the Surface: Buoyant Metal–Polymer Open–Cell Hybrid Lattice Metamaterials

open access: yesAdvanced Materials, EarlyView.
Open‐cell metal–polymer lattice metamaterials that defy sinking. (a) Injection process of the polyurethane (PU) foam into the titanium (Ti‐6Al‐4V) hollow‐strut lattice creating the open‐cell Ti‐6Al‐4V+PU hybrid lattice, (b) flotation test of a hybrid lattice specimen, and (c) a digital representation and experimental validation of a marine buoy ...
Jordan Noronha   +7 more
wiley   +1 more source

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