Results 51 to 60 of about 218,468 (291)

On Sea Ice/Water Discrimination by Airborne Weather Radar

open access: yesIEEE Access, 2020
We consider a conceptual approach for the applicability of airborne weather radar for the sea ice/water discrimination and estimation of the sea ice age.
Alexey Nekrasov   +6 more
doaj   +1 more source

Hydrogel Confinement Strategies for 3D Cell Culture in Microfluidic Systems

open access: yesAdvanced Materials Technologies, EarlyView.
Hydrogel confinement structures are key to organizing 3D cell cultures in microfluidic devices. This review classifies five structural strategies (micropillar, phaseguide, porous membrane, stepped‐height, and support‐free) and examines their trade‐offs alongside fabrication methods.
Soohyun Kim, Min Seok Lee, Sung Kyun Lee
wiley   +1 more source

Bistatic High-Frequency Radar Cross-Section of the Ocean Surface with Arbitrary Wave Heights

open access: yesRemote Sensing, 2020
The scattering theory developed in the past decades for high-frequency radio oceanography has been restricted to surfaces with small heights and small slopes.
Murilo Teixeira Silva   +2 more
doaj   +1 more source

Silicon containing electroconductive polymers and structures made therefrom [PDF]

open access: yes, 1991
An electropolymerized film comprised of polymers and copolymers of a monomer is formed on the surface of an anode. The finished structures have superior electrical and mechanical properties for use in applications such as electrostatic dissipation and ...
Distefano, Salvador   +2 more
core   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

open access: yesAdvanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane   +4 more
wiley   +1 more source

MXene‐Coated 3D Printed Horn Antennas for Ku Frequency Band

open access: yesAdvanced Materials Technologies, EarlyView.
An additive manufacturing approach to 3D printing horn antennas and coating them with Ti3C2Tx MXene is proposed. Rapid fabrication of lightweight, high‐performance antennas operating in the Ku‐band (12.4–18 GHz) has been demonstrated. The MXene‐coated antennas exhibit comparable electromagnetic performance to conventional, costly aluminum ones, with ...
Zahra Sarpanah Sourkouhi   +3 more
wiley   +1 more source

The radar cross section of dielectric disks [PDF]

open access: yes
A solution is presented for the backscatter (nonstatic) radar cross section of dielectric disks of arbitrary shape, thickness and dielectric constant. The result is obtained by employing a Kirchhoff type approximation to obtain the fields inside the disk.
Levine, D. M.
core   +1 more source

3D Printing of Stretchable, Compressible and Conductive Porous Polyurethane for Soft Robotics

open access: yesAdvanced Materials Technologies, EarlyView.
A 3D‐printable porous dopamine‐polyurethane acrylate elastomer results in conductive, stretchable, and compressible structures that can be metallized in situ through catechol‐mediated silver reduction. The resulting material function as both compliant soft robot with a and strain sensors without complex assemblies, enabling fully 3D‐printed soft ...
Ouriel Bliah   +3 more
wiley   +1 more source

Ultra Wide Band Radar Cross Section Reduction of a Perfectly Electric Conductor Sphere by the Application of Multilayer Metamaterial Coatings

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications
A full-wave analytical method using the addition theorems and Hertzian potential functions are used to compute the radar cross section of a sphere coated by several layers composed of common materials and metamaterials.
Homayoon Oraizi   +2 more
doaj   +1 more source

Simulative Investigation of the Radar Cross Section of Wind Turbines

open access: yesApplied Sciences, 2019
Wind-power generation is one of the fundamental sources of renewable energy. However, due to the increasing size of wind turbines, they cause unwanted interference with radar systems for civic protection, especially for on-shore locations.
Sebastian Hegler, Dirk Plettemeier
doaj   +1 more source

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