Results 81 to 90 of about 122,062 (293)

Self‐Assembled Inorganic Nanomembrane Tubes: Rolled‐Up Piezoelectrics for Microacoustic Wave‐Based Actuators and Sensors

open access: yesAdvanced Materials, EarlyView.
This study demonstrates a self‐assembly process to generate free‐standing piezoelectric nanomembranes, forming ultracompact microtubular acoustic wave sensors and actuators. The miniaturized 3D piezoelectric platform reported in this work can be applied in telecommunication, energy harvesting, and acoustofluidics. Moreover, the 3D self‐assembly can add
Raphaël C. L‐M. Doineau   +9 more
wiley   +1 more source

Parameter Optimization and Three-dimensional Flow Topology of a Cavity in a Blunt-nose Projectile [PDF]

open access: yesJournal of Applied Fluid Mechanics
Trajectory correction provides an effective means for enhancing the accuracy of conventional ammunition. This study investigated a cavity-based passive flow control method for trajectory correction and refined the cavity geometry using Orthogonal Array ...
A. A. Luo   +4 more
doaj   +1 more source

Intelligent Acousto‐Electrical Metamaterials (IAM) for Sound Source Detection

open access: yesAdvanced Materials, EarlyView.
Our proposed metamaterial concept enables sound source detection using a single material, in contrast to conventional arrays that require dozens or even hundreds of transducers. We show that the coupled acoustic–vibrational–electrical responses in piezoelectric metamaterials give rise to topology‐governed charge transport, producing distinct voltage ...
Victor Couëdel   +7 more
wiley   +1 more source

Primary Side Hybrid Reconfigurable Compensation for Wireless EV Charging With Constant Current/Constant Voltage Control

open access: yesIEEE Access
The recent advancements in wireless power transfer (WPT) technology have expanded its ap-plications, including electric vehicle (EV) charging. However, the requirement for precise control of lithium batteries necessitates operation in constant current ...
K. Arulvendhan   +5 more
doaj   +1 more source

Topology optimization on vortex-type passive fluidic diode for advanced nuclear reactors

open access: yesNuclear Engineering and Technology, 2019
The vortex-type fluidic diode (FD) is a key safety component for inherent safety in various advanced reactors such as the sodium fast reactor (SFR) and the molten salt reactor (MSR).
Do Kyun Lim   +3 more
doaj   +1 more source

Passive Aeroelastic Tailoring [PDF]

open access: yes
The Passive Aeroelastic Tailoring (PAT) project was tasked with investigating novel methods to achieve passive aeroelastic tailoring on high aspect ratio wings.
Brooks, Timothy   +6 more
core   +1 more source

Use of fabric membrane topology as an intermediate environment modifier [PDF]

open access: yes, 2003
This paper describes the pattern of airflow around membrane structures, and how they along with the form of the structure itself affect the ventilation rates within their enclosures or their immediate vicinity.
Chilton, John   +2 more
core  

Consistent SDNs through Network State Fuzzing

open access: yes, 2019
The conventional wisdom is that a software-defined network (SDN) operates under the premise that the logically centralized control plane has an accurate representation of the actual data plane state.
Canini, Marco   +5 more
core   +1 more source

3D Anodic Alumina Nanoarchitectures: A Decade of Progress from Foundational Science to Functional Metamaterials

open access: yesAdvanced Materials, EarlyView.
Ordered three‐dimensional anodic aluminum oxide (3D‐AAO) nanoarchitectures with longitudinal and transverse pores enable architecture‐driven metamaterials. The review maps fabrication advances, including hybrid pulse anodization, and shows how 3D‐AAO templates tailor properties across magnetism, energy, catalysis, and sensing.
Marisol Martín‐González
wiley   +1 more source

Metamaterial Antennas Enhance MRI of the Eye and Occipital Brain

open access: yesAdvanced Materials, EarlyView.
A radiofrequency antenna platform comprising planar and bend configurations is developed, incorporating structurally integrated epsilon‐negative metamaterial unit cells to enhance MRI. These antennas enable high‐resolution in vivo human MRI of the eye, orbit, and occipital brain. Comprehensive validation, including simulations, phantom experiments, SAR,
Nandita Saha   +14 more
wiley   +1 more source

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