Results 71 to 80 of about 1,620,298 (334)

A Compact Spin‐Coated Graphene UWB Antenna for Breast Tumor Detection

Advanced Engineering Materials, EarlyView.
A compact, spin‐coated graphene ultra‐wideband patch antenna designed for breast tumor detection, capable of distinguishing between malignant and benign tumors. This innovative antenna can serve as an effective initial screening tool, particularly in resource‐limited settings such as rural areas, where access to advanced medical equipment like MRI and ...
Raja Rashidul Hasan, Shuvra Saha, Sumit Hassan Eshan, Rinku Basak, Md. Nahian Al Subri Ivan, Ahmed Murtuza Saleque, Raja Tariqul Hasan Tusher, Sadia Zabin, Md. Abdur Rahman, Yuen Hong Tsang   +9 more
wiley   +1 more source

A Broadband High Gain Circularly Polarized Antenna System for Cognitive Radio [PDF]

Radioengineering, 2020
This paper proposes a broadband high gain LHCP (left hand circular polarized) antenna system using a microstrip line fed slot antenna, reflecting surfaces, and linear polarization (LP) to circular polarization (CP) transformer screen.
R. K. Parida, R. Swain, D. C. Panda, R. K. Mishra   +3 more
doaj  

C-Band Linear Polarization Metasurface Converter with Arbitrary Polarization Rotation Angle Based on Notched Circular Patches

Crystals, 2022
This paper presents a linear polarization metasurface converter with arbitrary polarization rotating angle and stable oblique incident response, which is based on the concept of linear-to-circular polarization decomposition and recombination.
Tao Zhang, Haoran Wang, Chongmei Peng, Zhaohui Chen, Xiaoyi Wang   +4 more
doaj   +1 more source

Circular polarization signals of cloudy (exo)planets

, 2018
The circular polarization of light that planets reflect is often neglected because it is very small compared to the linear polarization. It could, however, provide information on a planet's atmosphere and surface, and on the presence of life, because ...
Rossi, Loïc, Stam, Daphne M.
core   +1 more source

Assessing Altered Coating Adhesion on Plasma‐Deoxidized Surfaces Under Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
This study demonstrates the effectiveness of atmospheric pressure plasma pretreatment in modifying silicon and stainless steel surfaces to improve adhesion. Argon‐hydrogen plasma increases surface roughness and improves adhesion strength, whereas pure argon results in smoother surfaces and structural changes.
Selina Raumel, Lara Kuhr, Khemais Barienti, Sebastian Herbst, Florian Nürnberger, Hans Jürgen Maier, Marc C. Wurz   +6 more
wiley   +1 more source

Influence of Rotation on Pulsar Radiation Characteristics [PDF]

, 2001
We present a relativistic model for pulsar radio emission by including the effect of rotation on coherent curvature radiation by bunches. We find that rotation broadens the width of leading component compared to the width of trailing component.
Buschauer R., Buschauer R., Gangadhara R. T., Gil J. A., Kijak J., Lyne A. G., Malov D. E., Peyman Ahmadi, Qiao G., R. T. Gangadhara, Radhakrishnan V., Tademaru E., Yihan Z.   +12 more
core   +3 more sources

Copper Nanocrystallization in Anodic Oxide Films of Ti–Cu‐Based Bulk Metallic Glass and Its Effect on the Corrosion Resistance and Cytocompatibility

Advanced Engineering Materials, EarlyView.
Viktoriia Shtefan, Thorgund Nemec, Ute Hempel, Annett Gebert and coworkers demonstrate that anodic treatment of Ti–Cu‐based metallic glass in a nontoxic pyrophosphate electrolyte forms a protective bilayered Ti/Zr‐oxide film enriched with Cu nanocrystals.
Viktoriia Shtefan, Nora Fernández Navas, Thorgund Nemec, Ivan Kaban, Ute Hempel, Andrea Voss, Volker Hoffmann, Darius Pohl, Annett Gebert   +8 more
wiley   +1 more source

Full Stokes Mid-Wavelength Infrared Polarization Photodetector Based on the Chiral Dielectric Metasurface

Photonics
Conventional imaging techniques can only record the intensity of light while polarization imaging can record the polarization of light, thus obtaining a higher dimension of image information.
Bo Cheng, Yuxiao Zou, Guofeng Song
doaj   +1 more source

High-efficiency chiral meta-lens

Scientific Reports, 2018
We present here a compact metasurface lens element that enables simultaneous and spatially separated imaging of light of opposite circular polarization states.
Benedikt Groever, Noah A. Rubin, J. P. Balthasar Mueller, Robert C. Devlin, Federico Capasso   +4 more
doaj   +1 more source

A Frequency and Polarization Agile Disc Monopole Wearable Antenna for Medical Applications [PDF]

Radioengineering, 2020
A combined frequency and polarization reconfigurable textile based wearable disc monopole antenna is proposed in this paper. The antenna consists of a disc monopole as the radiator and four PIN diodes for realizing the agility property.
P. Saha, D. Mitra, S. K. Parui
doaj