Low frequency sound attenuation in a flow duct using a thin slow sound material
, 2015 We present a thin subwavelength material that can be flush mounted to a duct and which gives a large wide band attenuation at remarkably low frequencies in air flow channels.
Auregan, Yves +2 more
core +3 more sources
Photochemical Fuel Carrier Molecules for Robotic Embodied Energy
Advanced Materials, EarlyView.We designed a novel fuel carrier photoresponsive molecule for on‐demand energy storage and release. Carrier molecules undergo bond scission under UV light to release chemical fuel and locally generate propulsive Marangoni flows. We demonstrate this photochemical embodied energy strategy in small‐scale robots and active matter systems, enabling ...
Chuqi Huang +6 more
wiley +1 more source
Ultrasonic surface acoustic wave-assisted separation of microscale droplets with varying acoustic impedance. [PDF]
Ultrason Sonochem, 2023 Ali M, Park J.
europepmc +1 more source
A study of acoustic impedance measurements of materials with air flow Final report [PDF]
Acoustic impedance measurements of materials with air flow for reducing compressor noise of jet engines ...
core +1 more source
Advanced Materials, EarlyView.Metasurface‐engineered NC‐TENG arrays integrate tactile pressure mapping, non‐contact gesture sensing, and acoustic signal readouts in one ultrathin module, and outperforms pristine PDMS in terms of electrical output and real‐time spatial mapping for next‐gen wearables.
Injamamul Arief +12 more
wiley +1 more source
High Acoustic Impedance and Attenuation Backing for High-Frequency Focused P(VDF-TrFE)-Based Transducers. [PDF]
Sensors (Basel), 2023 Toffessi Siewe S +8 more
europepmc +1 more source
Laser‐Assisted Phase Engineering of 2D MoS2 for Efficient Solution‐Processed Electronics
Advanced 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
NUMERICAL ANALYSIS OF NON-REFLECTION BOUNDARY SIMULATION METHOD FOR RADIATION ACOUSTIC FIELD
Jixie qiangdu, 2019 Boundary condition is an important issue in acoustic calculations, and free acoustic field is often simulated by non-reflection boundary in acoustic calculations.
LI LiJun, LIU YiRan, SUN FengShan
doaj
Omni-directional and broadband acoustic anti-reflection and universal acoustic impedance matching. [PDF]
Nanophotonics, 2022 Im K, Park QH.
europepmc +1 more source
Advanced Materials, EarlyView.ABSTRACT Dynamic surface reconstruction critically governs the performance and durability of oxide‐based electrocatalysts for the oxygen evolution reaction (OER), yet controlling this process under operating conditions remains challenging. Here, we demonstrate that lattice strain regulates the extent of surface reconstruction in perovskite oxides by ...
Yong Beom Kim +5 more
wiley +1 more source