Results 41 to 50 of about 632 (194)

Optimization and Assessment of Parabolic Trough Solar Power Plants in Arid Climates: A Case Study in Tunisia

Energy Science &Engineering, EarlyView.
ABSTRACT This study aims to model a solar power plant (SPP) utilizing parabolic trough collectors (PTC) to fulfill the electricity needs in an arid zone of the southern of Tunisia. The research integrates both experimental and numerical approaches. A prototype of a PTC was first constructed and experimentally tested under arid climates. Subsequently, a
Anissa Ghomrassi, Monia Chaabane, Hatem Mhiri   +2 more
wiley   +1 more source

Reconfigurable Circularly Polarized Terahertz Emission from vdW Ferroelectric NbOI2

Laser &Photonics Reviews, EarlyView.
A controllable chiral terahertz pulse can be generated using a simple dual‐flake vdW ferroelectric NbOI2 emitter in which the polar axes of the two NbOI2 flakes are orthogonal. Both the chirality and the ellipticity can be manipulated by varying the separation distance and the orientations of their polar axes.
Baolong Zhang, Ruihuan Duan, Zheng Liu, Ranjan Singh   +3 more
wiley   +1 more source

Array of hexagonal Fresnel zone plate lens antennas

Electronics Letters, 2006
An array of overlapping single-zone hexagonal Fresnel zone plate lens antennas was designed and tested at 30 GHz. By arraying smaller-diameter lenses, a significantly lower overall profile can be achieved compared to a single lens of equivalent diameter. These arrays can also find use in spatial power combining or in imaging applications.
A. Petosa, S. Thirakoune, I.V. Minin, O.V. Minin   +3 more
openaire   +1 more source

Two‐Dimensional Transition Metal Dichalcogenides Properties Enhanced by Nano‐ and Micro‐Scale Shape Control

MetalMat, EarlyView.
This review explores current strategies for shaping two‐dimensional transition metal dichalcogenides (TMDs) beyond their planar form. It highlights how strain engineering, nanopatterning, and growth on complex substrates modulate their mechanical, optical, and electronic properties.
C. Grazianetti, G. Zambito, D. Campi, M. C. Giordano, F. Buatier de Mongeot, A. Molle, C. Martella   +6 more
wiley   +1 more source

Superimposed Sacrificial Texturing to Enhance the Optical Performance in Thin‐Film Solar Cells

Progress in Photovoltaics: Research and Applications, EarlyView.
Sacrificial texturing method using controlled etching of undoped zinc oxide and indium‐doped tin oxide generates microscale and nanoscale textures on glass. Roughness on two different scales is superimposed to create a new texture capable of broad‐spectrum scattering, which is utilised in thin‐film silicon solar cells to enhance optical performance ...
Govind Padmakumar, Matthias Criel, Tanya Kashyap, Federica Saitta, Paula Perez‐Rodriguez, René A. C. M. M. van Swaaij, Arno H. M. Smets   +6 more
wiley   +1 more source

Outdoor radiolinks for 2.4 GHz-frequencies: measurement results and experiences within the radio communication network “Intermobil Region Dresden" [PDF]

Advances in Radio Science, 2003
The radio communication network “Intermobil Region Dresden" was developed and built up for data transmission of traffic videos and other traffic data. It uses Pointto- Point (PtP) and Point-to-Multipoint (PtM) bridges, forming the backbone structure.
O. Michler
doaj  

Signal‐to‐noise and spatial resolution in in‐line imaging. 3. Optimization using a simple model

Journal of Synchrotron Radiation, EarlyView.
Geometrical magnification and X‐ray energy are optimized with respect to spatial resolution, contrast, noise, radiation dose and other image quality characteristics. The optimization is performed using a simple theoretical model of a homogeneous edge feature embedded in a bulk uniform sample, and the resulting generic analytical expressions for image ...
Timur E. Gureyev, David M. Paganin, Harry M. Quiney   +2 more
wiley   +1 more source

Highly Selective Toward HER or CO2RR by Regulating Cu Single and Dual Atoms on g‐C3N4

Advanced Functional Materials, Volume 36, Issue 10, 2 February 2026.
This systematic study provides insights into the design of electrocatalysts for hydrogen evolution reaction (HER) and carbon dioxide reduction (CO2RR). It serves as a useful guide for tuning catalyst architecture toward efficient multifunctional performance by varying synthetic parameters, demonstrating the impact of copper (Cu) species ranging from ...
Wan‐Ting Chen, Hung Wei Shiu, Yu‐Xun Chen, Erdembayalag Batsaikhan, Yu‐Ling Lai, Su Ling Cheng, Tohru Araki, Jyh‐Fu Lee, Michitoshi Hayashi, Yao‐Jane Hsu   +9 more
wiley   +1 more source

Easy-to-Fabricate High-Gain Linearly Polarized Antenna With Tunable Beam Pattern

IEEE Open Journal of Antennas and Propagation
This paper presents an easy-to-fabricate, high-gain, linearly polarized antenna using a circular ground plane. The ground plane is made of a dielectric substrate sandwiched by two conductive sheets placed on the open end of a standard rectangular open ...
Anil Kumar Yerrola, Maifuz Ali, Ravi Kumar Arya, Lakhindar Murmu, Ashwani Kumar   +4 more
doaj   +1 more source

Phase Topology Stability of an Optical Vortex via an Electrically Controlled Twist‐Planar Oriented Liquid Crystal Fresnel Lens

Advanced Optical Materials, Volume 14, Issue 5, 2 February 2026.
A simple and efficient method for determining the stability of optical vortices via Fourier transform using a conventional spherical lens is presented. The theoretical and experimental results demonstrate a practical approach to directly and unambiguously measure the magnitude and sign of the topological charge of a beam without altering an ...
Elena Melnikova, Katsiaryna Pantsialeyeva, Dmitry Gorbach, Alexei Tolstik, Sergei Slussarenko Jr., Alina Karabchevsky   +5 more
wiley   +1 more source