Results 41 to 50 of about 393,759 (310)

Sperm imaging utilizing terahertz near-field scanning microscopy

Biotechnology & Biotechnological Equipment
Terahertz (THz)-based near-field imaging technology exhibits significant potential for applications in biomedical detection. This study investigates biological cells utilizing the rapid imaging capabilities, high resolution, and non-destructive ...
Zhenchun Yu, Chengyao Peng, Shun Bai, Yuanqi Zhao, Yangyang Si, Wenbing Zhang   +5 more
doaj   +1 more source

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

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Overview of an experimental campaign for arrays of wave energy conversion systems

, 2023
Among the main challenges to overcome towards the large-scale commercial exploitation of wave energy systems, the deployment of arrays of wave energy converters (WECs) is of crucial importance.
Pasta, Edoardo, Peña-Sanchez, Yerai, Mosquera, Facundo, Guglielmo Papini, Papini, Guglielmo, Facundo Mosquera, Ferri, Francesco, Yerai Peña-Sanchez, Francesco Ferri, Nicolas Faedo, Edoardo Pasta, Faedo, Nicolas   +11 more
core   +1 more source

Feasibility Study of Wave Power in Ghana

International Journal of Sustainable Engineering, 2022
In this research, the evaluation of Ghana’s wave energy potential was presented based on the ERA5 monthly averaged data on single levels from 1979 to 2020 from European Centre for Medium-Range Weather Forecast (ECMWF).
Samuel Kofi Tulashie, Raphael Odai, Adeola Michael Dahunsi, Sandra Atisey, Jacking Amenakpor   +4 more
doaj   +1 more source

Solid‐State Diffusion and Intermetallic Phase Formation in Roll‐Bonded Mg–Zn Composites With Kirigami‐Patterned Inlay

Advanced Engineering Materials, EarlyView.
Mg–Zn composites with a thickness of 0.21 mm were fabricated using roll bonding of a kirigami‐patterned Mg alloy inlay within a Zn matrix. Thermal activation following this process led to the formation of tailored intermetallic structures, which provided the composite with enhanced flexural strength.
Yaroslav Frolov, Oleksandr Bobukh, Christian Klose, Florian Nürnberger, Hans Jürgen Maier   +4 more
wiley   +1 more source

Spall damage of Invar alloys under shock loading: Interplay between segregation bands, grain boundaries and deformation twins

Materials & Design
This work investigates the effect of elemental segregation bands on the spallation damage behavior of Invar 36 alloys. Plate impact recovery experiments and postmortem characterizations, as well as molecular dynamics simulations considering anisotropic ...
Zeming Tang, Sen Chen, Xiaotian Yao, Zhenyu Jiao, Yuan Wang, Yaping Zhang, Yuying Yu, Changming Hu, Jianbo Hu   +8 more
doaj   +1 more source

Waves and Energy in Chiral Nihility [PDF]

Journal of Electromagnetic Waves and Applications, 2003
A model for a chiral material in which both the permittivity and permeability are equal to zero is discussed. Such a material is referred by us as a ``chiral nihility". It is shown that this exotic material can be realized as a mixture of small helical inclusions. Wave solutions and energy in such a medium are analyzed.
Tretyakov, Sergei, Nefedov, Igor, Sihvola, Ari, Maslovski, Stanislav, Simovski, Constantin   +4 more
openaire   +2 more sources

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

Advanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares, Nadège Bouchonneau, Christian Jochum, Donald Radford   +3 more
wiley   +1 more source

On the energy of nonlinear water waves [PDF]

Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2021
This article presents results concerning the excess kinetic and potential energies for exact nonlinear water waves. In particular, it is proven, for periodic travelling irrotational water waves, that the excess kinetic energy density is always negative, whereas the excess potential energy density is always positive, in the steady reference frame.
openaire   +4 more sources