Results 71 to 80 of about 115,599 (337)

Flexible and tunable electromagnetic meta-atom based on silver nanowire networks

open access: yesMaterials & Design, 2019
Electromagnetic interference (EMI) shielding metamaterials have become indispensable in reducing electromagnetic (EM) wave radiation pollution. In this study, a flexible and tunable EM meta-atom was proposed and fabricated for EMI shielding metamaterials.
Chang Liu   +4 more
doaj   +1 more source

Hierarchical Polyimide Nonwoven Fabric with Ultralow-Reflectivity Electromagnetic Interference Shielding and High-Temperature Resistant Infrared Stealth Performance. [PDF]

open access: yesNanomicro Lett
Hierarchical polyimide (PI) nonwoven fabric is fabricated by alkali treatment, in-situ growth of magnetic particles, and "self-activated" electroless Ag plating process.
Tang X   +9 more
europepmc   +2 more sources

Real‐Time 3D Ultrasound Imaging with an Ultra‐Sparse, Low Power Architecture

open access: yesAdvanced Healthcare Materials, EarlyView.
This article presents a novel, ultra‐sparse ultrasound architecture that paves the way for wearable real‐time 3D imaging. By integrating a unique convolutional array with chirped data acquisition, the system achieves high‐resolution volumetric scans at a fraction of the power and hardware complexity.
Colin Marcus   +9 more
wiley   +1 more source

Optimized power converters for electrically augmented on-orbit propulsion systems

open access: yes, 2002
Advances in satellite thruster technology have produced the requirement for high power electrical supplies to operate electrically augmented on-orbit propulsion systems.
Olyniec, Lee Michael
core   +1 more source

Directional Liquid Transport Enabled pH‐Responsive Hierarchical Composite for Enhanced Wound Healing

open access: yesAdvanced Healthcare Materials, EarlyView.
A hierarchical composite with a gradient architecture transitioning from hydrophobic to hydrophilic layers integrates diode‐like liquid transport, efficient water absorption, breathability, and mechanical robustness. This device enables a multifunctional therapeutic platform with pH‐responsive dual‐drug release, providing synergistic anti‐inflammatory ...
Baolin Wang   +5 more
wiley   +1 more source

Correction of dephasing oscillations in matter wave interferometry

open access: yes, 2014
Vibrations, electromagnetic oscillations and temperature drifts are among the main reasons for dephasing in matter-wave interferometry. Sophisticated interferometry experiments, e.g.
Chang, Wei-Tse   +7 more
core   +1 more source

Physical Intelligence in Small‐Scale Robots and Machines

open access: yesAdvanced Materials, EarlyView.
“Physical intelligence” (PI) empowers biological organisms and artificial machines, especially at the small scales, to perceive, adapt, and even reshape their complex, dynamic, and unstructured operation environments. This review summarizes recent milestones and future directions of PI in small‐scale robots and machines.
Huyue Chen, Metin Sitti
wiley   +1 more source

Observability of an induced electric dipole moment of the neutron from nonlinear QED [PDF]

open access: yes, 2011
It has been shown recently that a neutron placed in an external quasistatic electric field develops an induced electric dipole moment $\mathbf{p}_{\mathrm{IND}}$ due to quantum fluctuations in the QED vacuum. A feasible experiment which could detect such
C. A. Dominguez   +9 more
core   +2 more sources

Lightweight Dual-Functional Segregated Nanocomposite Foams for Integrated Infrared Stealth and Absorption-Dominant Electromagnetic Interference Shielding

open access: yesNano-Micro Letters
Lightweight dual-functional segregated nanocomposite foams are developed via the supercritical CO2 (SC-CO2) foaming combined with hydrogen bonding assembly and compression molding strategy The segregated nanocomposite foams exhibit superior infrared ...
Zhonglei Ma   +10 more
semanticscholar   +1 more source

Sculpting the Future of Bone: The Evolution of Absorbable Materials in Orthopedics

open access: yesAdvanced Materials, EarlyView.
This review summarizes the current status of polymeric, ceramic, and metallic absorbable materials in orthopedic applications, and highlights several innovative strategies designed to enhance mechanical performance, control degradation, and promote bioactivity. We also discuss the progress and translational potential of absorbable materials in treating
Zhao Wang   +13 more
wiley   +1 more source

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