Results 81 to 90 of about 11,815 (201)

Bioinspired Flexible and Stretchable Coil Structure from Ti3C2Tx MXene/AgNPs‐Functionalized Piezoelectric Nanofibers for Enhanced Energy Harvesting

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Ti3C2Tx MXene and Ag nanoparticles are embedded into piezoelectric nanofibers to form a stretchable, self‐powered coil that converts mechanical deformation into electrical energy. The device enables controllable power output during stretching and release while maintaining a compact and lightweight architecture, making it suitable for miniaturized ...
Fatemeh Mokhtari   +6 more
wiley   +1 more source

Microgravimetric immunosensor for direct detection of aerosolized influenza A virus particles. [PDF]

open access: yes, 2007
The development and characterization of a quartz crystal microbalance (QCM) sensor for the direct detection of aerosolized influenza A virions is reported.
Al-Kaysi, Rabih O   +3 more
core  

Implantable drug delivery system: Frontiers of medicine‐engineering interdisciplinary

open access: yesInterdisciplinary Medicine, EarlyView.
This review systematically summarizes the driving mechanisms of implantable on‐demand drug delivery systems (IDDS), including endogenous, exogenous, and closed‐loop strategies. It highlights the pivotal roles of flexible electronics and miniaturization in enhancing the tissue conformity and spatial adaptability.
Yu Zeng   +9 more
wiley   +1 more source

Giant Phonon‐Enhanced Terahertz Electro‐Optic Response in Ferroelectric van der Waals NbOX2 (X = Br, I)

open access: yesLaser &Photonics Reviews, EarlyView.
Van der Waals ferroelectric NbOX2 thin films exhibit phonon‐resonance enhanced electro‐optic responses, 332 pm/V at 3.1 THz (NbOI2) and 192 pm/V at 3.7 THz (NbOBr2), the highest among vdW materials, and show 4% non‐resonant SHG modulation together with resonant phonon‐enhancement under a 150 kV/cm THz pump.
Baolong Zhang   +3 more
wiley   +1 more source

Delamination Depth Detection in Composite Plates Using the Lamb Wave Technique Based on Convolutional Neural Networks

open access: yesSensors
Delamination represents one of the most significant and dangerous damages in composite plates. Recently, many papers have presented the capability of structural health monitoring (SHM) techniques for the investigation of structural delamination with ...
Asaad Migot   +2 more
doaj   +1 more source

Micro-sized tunable liquid crystal optical filters

open access: yes, 2017
Liquid Crystal Arrayed Microcavities (LCAM) is a new technology for ultra-narrow optical filtering (FWHM ~ 0.1 nm) that uses pico-liter volume Fabry-Perot type optical cavities filled with liquid crystal for tuning.
Atherton, David   +3 more
core   +1 more source

Influence of Temperature on the Reliability of Graphene‐Based Ozone Sensors

open access: yesSmall, EarlyView.
The reliability and stability of inkjet‐printed graphene flake sensors are evaluated. Stress assessments take place in ozone‐rich environments and at elevated temperatures, with the observation of a change in resistance. Surface‐sensitive techniques serve to investigate the failure and degradation mechanisms of printed graphene.
Archa Jain   +9 more
wiley   +1 more source

Filling a Gap in Materials Mechanics: Nanoindentation at High Constant Strain Rates up to 105 s−1

open access: yesSmall, EarlyView.
A piezoelectric nanoindentation platform enables constant strain‐rate testing up to 105 s−1, extending experimental capabilities to extreme deformation regimes. Distinct hardness upturns are revealed across crystalline and amorphous materials, verified as intrinsic responses through quasi‐static reloading.
Lalith Kumar Bhaskar   +14 more
wiley   +1 more source

Damage location method for thin composites structures - application to an aircraft door [PDF]

open access: yes, 2013
Piezoelectric sensors are widely used for Structure Health Monitoring (SHM) technique due to their high-frequency capability. In particular, electromechanical impedance (EMI) techniques give simple and low cost solutions for detecting damage in composite
Cherrier, Olivier   +3 more
core  

Electrically Reconfigurable Quasi‐BIC Metadevices Enabled by Integrated Barium Titanate

open access: yesNanophotonics, Volume 15, Issue 9, 13 May 2026.
An electrically reconfigurable quasi‐BIC metasurface is demonstrated by monolithic integration of barium titanate. Leveraging the Pockels effect, linear tuning of 1.79 nm/V is achieved, enabling a 250 μm2 miniaturized spectrometer with 0.2 nm resolution, 99% fidelity, and high throughput.
Jingyi Xia   +5 more
wiley   +1 more source

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