Results 111 to 120 of about 803,402 (286)

A gain-reconfigurable flat gradient refractive index plasma lens

Scientific Reports
This paper presents a novel reconfigurable flat gradient-index (GRIN) lens antenna utilizing plasma dielectric materials. The lens structure consists of multiple nested cylindrical plasma layers whose plasma frequencies are controllable by adjusting the ...
Fatemeh Sadeghikia, Kazem Zafari, Mohamed Himdi, Ali K. Horestani   +3 more
doaj   +1 more source

Circular aperture antenna with spherical lens for mmWave radar level meter

Ain Shams Engineering Journal
This paper proposes a novel design for a circular aperture antenna using a spherical lens and absorbing material to achieve narrow beamwidth and low side lobe level (SLL) for mmWave radar level meter (RLM) applications.
Jae-Ho Lee, Kyoung-Sub Oh, Dong-Wook Seo
doaj   +1 more source

Design of a Low-Reflection Flat Lens Antenna Based on Conformal Transformation Optics. [PDF]

Micromachines (Basel), 2023
Nazarzadeh F, Heidari AA.
europepmc   +1 more source

All‐Amyloid Functional Coacervates

Advanced Materials, EarlyView.
This study introduces an all‐amyloid interfacial complex coacervate technique that employs charge‐mediated or functionalization‐assisted complexation of oppositely charged food protein‐derived amyloid nanofibrils to engineer functional soft constructs across multiple length scales.
Seyyed Alireza Hashemi, Mohammad Peydayesh, Laura Baraldi, Mohammad Arjmand, Raffaele Mezzenga   +4 more
wiley   +1 more source

Fast Hydrogel Micro‐Actuators Driven by Electric Fields

Advanced Materials, EarlyView.
We report the fabrication of chemically programmable electroactuating microstructures through the first integration of two‐photon polymerization with electrically actuated gelatin methacrylate‐based hydrogels. By tailoring the charge of the polymer network, we demonstrate programmable polarity‐dependent bending, enabling microstructures that ...
Annaël Sort‐Montenegro, Jason M. Delente, Žiga Roblek, Yekaterina Tskhe, Luke Dowling, Colm Delaney, Larisa Florea   +6 more
wiley   +1 more source

Cost-effective wideband dielectric planar lens antenna for millimeter wave applications. [PDF]

Sci Rep, 2022
Poyanco JM, Pizarro F, Rajo-Iglesias E.
europepmc   +1 more source

Millimeter-wave filtering lens antenna

, 2017
This paper presents a high-gain millimeter-wave filtering lens antenna, which consists of a filtering feed tapered slot antenna (TSA) and a dielectric spherical lens.
Huang, Jifu, Wang, Jian, Zhong, Shuomin, Hua, Changzhou, Wang, Yi; id_orcid, Changzhou Hua, null Jifu Huang, Wu, Zhangmin, Yi Wang, null Shuomin Zhong, null Jian Wang, Liu, Taijun, null Zhangmin Wu, null Taijun Liu, null Gaoming Xu, Xu, Gaoming   +15 more
core   +1 more source

Toward Pore‐Engineered 3D‐Printed Materials for Sorption Water Harvesting, Interfacial Evaporation, and Radiative Cooling

Advanced Materials, EarlyView.
Water harvesting, radiative cooling, and interfacial solar evaporation are fundamentally governed by coupled heat, mass, and light transport processes. These processes are mediated by pore architecture, including pore size, connectivity, and hierarchical organization.
Dejan J. Trajkovski, Higgins M. Wilson, Abdallah Y. M. Ali, Jiaxing Xu, Ruzhu Wang, Primož Poredoš   +5 more
wiley   +1 more source

Highly Compact Dual-Band Four-Port Integrated Lens MIMO Antenna for 5G New Radio IoT Devices

IEEE Access
This article introduces a highly compact, dual-wideband four-port MIMO antenna with an integrated 3D-printed dielectric lens, tailored for 5G millimeter-wave (mmWave) new radio (NR) IoT applications.
Bilal Tariq Malik, Shahid Khan, Jamal Nasir, Slawomir Koziel   +3 more
doaj   +1 more source

Perforated Dielectric Lens Antenna Design [PDF]

, 2018
In this paper, a dielectric lens in a three dimensional structure with a matching layer on a planar antenna platform was added to work on a high gain antenna.
Tokan , F., Alcep , M.
core