Results 61 to 70 of about 664 (264)

Self‐Powered Visible‐Blind Graphene/NiO/ZnO UV‐C Photodiodes

Advanced Optical Materials, EarlyView.
“A scalable architecture for self‐powered UV‐C photodiodes integrates defect‐engineered p‐NiO/n‐ZnO heterojunctions with highly UV‐C transparent graphene anodes. The type‐II band alignment combined with the built‐in electrical field enables robust zero‐bias charge separation.
Umut Kaya, Leon Lörcher, Yasaman Jarrahizadeh, Axel Lorke, Wolfgang Mertin, Gerd Bacher   +5 more
wiley   +1 more source

Prevention of concrete structures from collapsing

MATEC Web of Conferences, 2018
At the end of the 20th century requirements on using electrical properties of building materials emerged for application in heating of trafficable surfaces, grounding of electrostatic charges in floors, shielding of electro-magnetic fields and diagnosis ...
Cechmanek R., Nespor B., Drdlova M., Steffan P., Machan L.   +4 more
doaj   +2 more sources

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

Hard‐Magnetic Soft Millirobots in Underactuated Systems

Advanced Robotics Research, EarlyView.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang, Zixuan Zhang, Bingyan Li, Junkai Wang, Hongcheng Gu   +4 more
wiley   +1 more source

Advancing Grounding System Design: A Comprehensive Review of Key Elements, Parameters, and Performance Insights

IEEE Access
The design of high-performance grounding systems is a cornerstone of safety and reliability in modern AC substations, particularly under increasingly severe fault and transient operating conditions.
Mahmoud Wahba, Hamdy A. Ziedan, Mohamed A. Ismeil, Montaser Abdelsattar   +3 more
doaj   +1 more source

Contribution to the study of grounding systems behavior with addition of ground enhancing compounds

, 2016
The operation and, in general, the behavior of grounding systems is defined by some fundamental parameters: the rate of soil resistivity, the type and the size of grounding systems. The continuous improvement in designing these systems, together with the
Androvitsaneas, Vasilios, Ανδροβιτσανέας, Βασίλειος   +1 more
core   +1 more source

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

Advanced 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, Kaushik Jayaram, Nicole Xu   +2 more
wiley   +1 more source

Impulse Characteristics of Various Soil-Enhancement Material Mixtures

Applied Sciences
Many studies have demonstrated that a reduction in ground impedance value occurs under high-impulse current magnitudes, due to the ionisation process in soil.
Fazlul Aman, Usman Muhammad, Normiza Mohamad Nor, Haziah Abdul Hamid   +3 more
doaj   +1 more source

Degradable Magnetic Composites from Recycled NdFeB Magnets for Soft Actuation and Sensing

Advanced Robotics Research, EarlyView.
This work presents a degradable soft magnetic composite made from recycled NdFeB particles embedded in a gelatin‐based organogel. The material is processed into magnetic sensors and soft robotic components, which can later be dissolved in a green solvent to recover NdFeB magnetic particles.
Muhammad Bilal Khan, Lin Guo, Kilian Schäfer, Eduardo Sergio Oliveros‐Mata, Xiaotao Wang, Florian Hofmann, Matthias Lutzi, Mark Suppelt, Proloy Taran Das, Jan Schmidtpeter, Imants Dirba, Stephan Rinderknecht, Mario Kupnik, Denys Makarov, Oliver Gutfleisch   +14 more
wiley   +1 more source

Impact of external interfering factors on the accuracy of static and impulse resistance measurement of grounding

, 2007
Podstawowym parametrem charakteryzującym skuteczność działania uziemienia jest jego rezystancja. Dla uziemień odgromowych powinna ona być wyznaczana przy wymuszeniu udarowym zaś dla uziemień ochronnych i roboczych przy częstotliwościach bliskich ...
Wołoszyk, M.
core