Results 141 to 150 of about 19,671,460 (302)

Microwall‐Integrated Terahertz Metasurfaces for Spatially Guided Label‐Free Sensing of Micrometer‐Scale Plastic Particles

open access: yesAdvanced Materials Technologies, EarlyView.
A THz metasurface device integrating a metal–dielectric–metal resonator with microwall‐defined recessed regions enables spatially guided, label‐free sensing of micrometer‐scale plastic particles. The as‐fabricated devices exhibit distinct THz reflection resonances for 3.1‐µm polystyrene particles and a concentration‐dependent resonance‐frequency‐shift ...
Naoki Inomata   +2 more
wiley   +1 more source

Coherent Absorption Reveals Colors Hidden in a Grey Fabry–Pérot Cavity

open access: yesAdvanced Optical Materials, EarlyView.
A dielectric thin film shows colors depending on its thickness; this effect can be used to encode information normally accessible through single‐beam spectroscopy. We developed a method to conceal this kind of information, based on coating the dielectric with a matched conductor, that suppresses the color‐bearing thin‐film resonances.
Giuseppe E. Lio   +10 more
wiley   +1 more source

Methods of frequency tuning vibration based micro-generator

open access: yes, 2009
A vibration based micro-generator is an energy harvesting device that couples a certain transduction mechanism to the ambient vibration and converts mechanical energy to electrical energy.
Zhu, Dibin
core   +1 more source

Electrochemistry‐Enabled Optical and Plasmonic Programmable Metasurfaces

open access: yesAdvanced Optical Materials, EarlyView.
Electrochemistry is emerging as a promising approach for engineering optical and plasmonic metasurfaces, from the fabrication of nanoscale structures to their dynamic control. This Perspective reviews electrochemical strategies for creating and tuning metasurfaces, examines current challenges and opportunities, and discusses how integration with ...
Charlène Brissaud, Leonardo Scarabelli
wiley   +1 more source

Influence of power equipment electromagnetic fields on the environment

open access: yes, 2010
Приведен анализ источников высокочастотных электромагнитных полей на энергетическом оборудовании. Показаны перспективы развития методов моделирования источников высокочастотных электромагнитных полей.An analysis of high-frequency electromagnetic fields ...
Шевченко, Сергей Юрьевич
core  

Micromachined Double‐Membrane Mechanically Tunable Metamaterial for Thermal Infrared Filtering

open access: yesAdvanced Photonics Research, Volume 6, Issue 5, May 2025.
Herein, a mechanically tunable double‐layer plasmonic metamaterial leveraging the extraordinary optical transmission effect observed in subwavelength arrays of openings within thin metal layers is presented. The concept is experimentally validated by integrating the proposed metamaterial structure into an electrostatic parallel‐plate actuator to create
Oleg Bannik   +7 more
wiley   +1 more source

Soft Actuators Integrated with Control and Power Units: Approaching Wireless Autonomous Soft Robots

open access: yesAdvanced Robotics Research, EarlyView.
Soft robots exhibit significant development potential in various applications. However, there are still key technical challenges regarding material improvement, structure design and components integration. This review focuses on the development and challenge of soft actuators, power components, and control components in untethered intelligent soft ...
Renwu Shi, Feifei Pan, Xiaobin Ji
wiley   +1 more source

On an Experimental Analysis of High Frequency Electromagnetic Field.

open access: yesOn an Experimental Analysis of High Frequency Electromagnetic Field.
論文(Article) 高周波誘電加熱の際に誘電体に生ずる特異現象(例えば中骨,端面作用等)の解析は在來高周波電磁界の様相にはあまりふれずに誘電体損による発生熱の龍熱,傳導,放散等の事象によつてのみ説明されていた傾向がある。筆者等は高周波電磁界の特異様相を直感的に認識しようという目的で実験的に解析する試みとして熱感変色作用を有する塩化コバルトCoCl_2・6H_2O水溶液で処埋した試験祇片を用いて,種々の電極による高周波電磁界の中で発熱温度上昇する状態を観察した。その結果から安宅氏の超高周波電磁界解析埋論の実験的検討を行うことができ更に一般に高周波電磁界が静電界と甚しく相異していることを認めた。さらにこの観察結果から一般的埋論の発見につとめたいと考えている ...
openaire   +1 more source

The New Occupational Electromagnetic Fields' Directive 2013/35/EU Compared to the Existing Estonian National Legislation

open access: yes
The electromagnetic fields are classified as “emerging health risks”. The emergence of new radiofrequency technologies has introduced some of the labor force to new types of electromagnetic fields’ exposure.
Vilcāne, Inese, Koppel, Tarmo
core  

Multimodal Locomotion in Insect‐Inspired Microrobots: A Review of Strategies for Aerial, Surface, Aquatic, and Interfacial Motion

open access: yesAdvanced Robotics Research, EarlyView.
This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska   +2 more
wiley   +1 more source

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