Results 81 to 90 of about 14,468 (289)

On the use of bianisotropic huygens' metasurfaces to build leaky-wave antennas [PDF]

, 2019
The Electromagnetics AcademyHuygens' metasurfaces are considered a powerful tool to achieve anomalous electromagnetic field transformations. They consist of an artifcial surface built of pairs of collocated electric and magetic dipoles that force the ...
Abdo Sánchez, Elena, Chen, M., Eleftheriades, G. V., Epstein, Ariel   +3 more
core  

Smart Face Masks as Wearable Respiratory Sensors: A Review of Sensor Technologies, Materials, and Future Directions

Advanced Healthcare Materials, EarlyView.
This review highlights recent advances in smart face masks that actively monitor breathing. By integrating humidity, gas, temperature, pressure, strain, and triboelectric sensors, these masks track key respiratory parameters in real time. The article summarizes sensor mechanisms, compares performance across studies, and discusses challenges and future ...
Negin Faramarzi, Naseeh Backer Kannanthodi, Alice Nicole Casling, Babar Ali, Samira Lakouraj Mansouri, Alessandro Giuseppe D'aloia, Hossein Cheraghi Bidsorkhi, Maria Sabrina Sarto   +7 more
wiley   +1 more source

Measurement of Rayleigh Wave Beams Using Angle Beam Wedge Transducers as the Transmitter and Receiver with Consideration of Beam Spreading

Sensors, 2017
A theoretical model, along with experimental verification, is developed to describe the generation, propagation and reception of a Rayleigh wave using angle beam wedge transducers. The Rayleigh wave generation process using an angle beam wedge transducer
Shuzeng Zhang, Xiongbing Li, Hyunjo Jeong   +2 more
doaj   +1 more source

Guiding light by and beyond the total internal reflection mechanism [PDF]

, 2005
This thesis reports a series of techniques the author has developed to model various waveguiding structures, including the conventional planar and channel waveguides working by, and the advanced structures working beyond the TIR mechanism.
Uranus, Henri Putra
core   +2 more sources

Nanotherapies for Atherosclerosis: Targeting, Catalysis, and Energy Transduction

Advanced Healthcare Materials, EarlyView.
Atherosclerosis management is hindered by poor drug targeting and plaque heterogeneity. Nanotechnology overcomes these barriers via three core strategies: (1) target‐engineered nanocarriers that achieve lesion‐specific precision via ligand modification, biomimetic camouflage, stimuli‐responsive release, and self‐propelling nanomotors; (2) catalytic ...
Yuqi Yang, Jingguo Qu, Tonghuan Xiao, Xinyang Han, Michael Tin‐Cheung Ying   +4 more
wiley   +1 more source

Opinion: Gavage Administration of MXene as a Route‐Specific Alternative to Intravenous Injection into the Bloodstream of Laboratory Animals for Reducing Systemic Nanotoxicity Risks in Immunosuppression and Post‐Transplantation Models with Bile Acid Modification

Advanced Healthcare Materials, EarlyView.
Recent studies reported immunosuppressive properties of specific MXene nanomaterials. Their intravenous injection into the bloodstream of laboratory animals has been a common delivery method to suppress systemic inflammation and prevent transplant rejection.
Alireza Rafieerad, M. Akif Rahman, Ahmad Amiri   +2 more
wiley   +1 more source

Liquid Crystal-Based Wideband Reconfigurable Leaky Wave X-Band Antenna

IEEE Access, 2019
In this paper, a pattern and frequency reconfigurable leaky wave X-band antenna based on liquid crystal is designed. The frequency sweep characteristics of traditional leaky wave antennas are replaced by electrical properties of liquid crystal materials.
Di Jiang, Xiaoyu Li, Zihao Fu, Puhang Ran, Guofu Wang, Zhi Zheng, Tianliang Zhang, Wen-Qin Wang   +7 more
doaj   +1 more source

Numerical method for solving the problem of TE-waves in the Goubau line

Известия высших учебных заведений. Поволжский регион: Физико-математические науки, 2021
Background. The problems of electromagnetic wave propagation in open metaldielectric structures are important in the study of waveguides. The purpose of the article is to numerically study a problem of the leaky and surface TE-electromagnetic wave ...
E.Yu. Smol'kin, V.Yu. Martynova
doaj   +1 more source

Fully Wireless and Flexible Valves for Multiplexed and Prolonged Intravesical Liquid Release

Advanced Healthcare Materials, EarlyView.
A fundamental mechanism for the simultaneous control of multiple magnetic valves is reported in a miniature soft robotic patch for intravesical drug delivery, enabling fully wireless and programmable liquid release. Integrated with a bioadhesive interface and induction‐coupling‐based liquid volume sensing, the soft robotic patch is promising to enable ...
Boyang Xiao, Yi Zhu, Yusheng Wang, Janene M. Pierce, Jeffrey J. Tosoian, Xiaoguang Dong   +5 more
wiley   +1 more source

Simultaneously Excited Narrow and Broad Quasiperiodic Fast-propagating Wave Trains in the Solar Corona

The Astrophysical Journal
The response of a solar coronal plasma loop to an impulsive perturbation, demonstrating the simultaneous formation of guided and leaky fast magnetoacoustic wave trains, is numerically studied.
Mijie Shi, Valery M. Nakariakov, Bo Li, Mingzhe Guo   +3 more
doaj   +1 more source