Results 151 to 160 of about 1,179,786 (405)

Defect‐Mediated Scintillation in Fully Inorganic Perovskites via Water‐Induced 0D/3D Phase Modulation

open access: yesAdvanced Functional Materials, EarlyView.
A reproducible synthesis to control 3D/0D phase ratios via water‐tuned solvent–antisolvent methods is presented. Enhanced scintillation yield and ultrafast decay are achieved. Defect‐driven emission mechanisms are revealed through cathodoluminescence and radioluminescence, shedding light on the underexplored role of the 0D Cs4PbBr6 and mixed 0D/3D ...
Mario Calora   +18 more
wiley   +1 more source

Dynamical Modeling and Active Vibration Control Analysis of a Double-Layer Cylindrical Thin Shell with Active Actuators

open access: yesSci
The application of double-layer shell structure is very common in some situations that require complex loads and vibrations, such as key components such as the shell and wings of aerospace engines, and the shell of underwater vehicles.
Yu Wu, Rui Huo
doaj   +1 more source

Active vibration control of piezo-laminated cantilever beam [PDF]

open access: yes, 2011
In active vibration control the vibration of a structure is reduced by using opposite directional force to the structure. Now a day‟s active vibration control is frequently being used in aircraft, submarine, automobile, helicopter blade, naval vessel. In
Baral, Joy   +2 more
core  

Backbone Heterojunction Photocatalysts for Efficient Sacrificial Hydrogen Production

open access: yesAdvanced Functional Materials, EarlyView.
Herein, a ‘single‐component’ organic semiconductor photocatalyst is presented in which a molecular donor is bonded to a polymer acceptor. The resultant material demonstrates exceptional photocatalytic activity for hydrogen evolution in aqueous triethylamine with an outstanding external quantum efficiency of 38% at 420 nm.
Richard J. Lyons   +11 more
wiley   +1 more source

Topology optimization of piezoelectric sensor and actuator layers for active vibration control

open access: green, 2020
Daniel Giraldo Guzmán   +2 more
openalex   +1 more source

Digital active material processing platform effort (DAMPER), SBIR phase 2 [PDF]

open access: yes
Applied Technology Associates, Inc., (ATA) has demonstrated that inertial actuation can be employed effectively in digital, active vibration isolation systems.
Blackburn, John, Smith, Dennis
core   +1 more source

Mechanochemistry‐Assisted Solvent‐Free Supramolecular Engineering for Atomic‐Layered Carbon Nitride Nanosheets with Enhanced Photocatalytic Hydrogen Evolution

open access: yesAdvanced Functional Materials, EarlyView.
A solvent‐free mechanochemistry‐enabled supramolecular engineering strategy is developed to directly synthesize covalent‐interconnected two‐dimensional atomic‐layered carbon nitride nanosheets photocatalyst, bypassing conventional top‐down exfoliation requirements.
Fanglei Yao   +7 more
wiley   +1 more source

High performance, accelerometer-based control of the Mini-MAST structure at Langley Research Center [PDF]

open access: yes
Many large space system concepts will require active vibration control to satisfy critical performance requirements such as line of sight pointing accuracy and constraints on rms surface roughness. In order for these concepts to become operational, it is
Collins, Emmanuel G., Jr.   +3 more
core   +1 more source

Analysis of potential helicopter vibration reduction concepts [PDF]

open access: yes, 1985
Results of analytical investigations to develop, understand, and evaluate potential helicopter vibration reduction concepts are presented in the following areas: identification of the fundamental sources of vibratory loads, blade design for low vibration,
Davis, M. W., Landgrebe, A. J.
core   +1 more source

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