Results 81 to 90 of about 37,452 (297)

Freeform Manufacturing of Plant‐Based Structural Colors for Scalable Photonic and Mechanochromic Devices

Advanced Materials, EarlyView.
A green, freeform manufacturing approach that utilizes robust aqueous two‐phase systems to create intricate and scalable photonic structures and non‐planar mechanochromic hydrogel actuators from plant‐based hydroxypropyl cellulose. This approach broadens the structural possibilities of sustainable photonic devices and mechanochromic systems, offering ...
Xiao Song, Peiqi Niu, Wenxi Gu, Chun Lam Clement Chan, Jiuhong Yi, Xu Liu, Peng Tan, Chon In Haydn Cheong, Qingwen Guan, Dan Fang, Bingpu Zhou, Zi Liang Wu, Ji Liu, Yan Yan Shery Huang, Iek Man Lei   +14 more
wiley   +1 more source

Metaheuristic-Tuned Droop Control for PV-Based DC Microgrid Optimization Under Dynamic Load Conditions

IEEE Access
Sustainable energy solutions from photovoltaic (PV)-based direct current (DC) microgrids (MG) encounter issues in maintaining voltage stability and power-sharing efficiency during dynamic demand fluctuation.
G. R. Prudhvi Kumar, Sattianadan Dasarathan   +1 more
doaj   +1 more source

A Super‐Adhesive Air Filter With Capillarity‐Mediated Spontaneous Particle Absorption via Dynamic Bond Exchange

Advanced Materials, EarlyView.
We address the inherently weak particle adhesion of conventional air filters by coating a dynamically crosslinked adhesive layer that delivers capillarity‐driven strong adhesion and particle absorption mediated by dynamic bond exchange. The resulting enhancement in particle adhesion enables efficient ultrafast (up to 20 m s−1) and omnidirectional ...
Junyong Park, Hyeri Jeon, Hyunwoong Park, Ji Min Lee, Yeomyung Yoon, Gyeong Hwan Choi, Sazzadul A. Rahat, Dong Wook Lee, Sohdam Jeong, Jonathan T. Pham, Chae Bin Kim, Sanghyuk Wooh   +11 more
wiley   +1 more source

Overview of increasing the penetration of renewable energy sources in the distribution grid by developing control strategies and using ancillary services [PDF]

, 2014
Increasing the renewables energy resources in the distribution network is one of the main challenges of the distributed system operator due to instability, power quality and feeder capacity problems. This paper proposes a solution for further penetration
Bozalakov, Dimitar, Meersman, Bart, Vandevelde, Lieven, Vandoorn, Tine   +3 more
core  

Current-Limiting Droop Control of Grid-Connected Inverters [PDF]

IEEE Transactions on Industrial Electronics, 2017
A current-limiting droop controller is proposed\ud for single-phase grid-connected inverters with an\ud LCL filter that can operate under both normal and faulty\ud grid conditions. The controller introduces bounded nonlinear\ud dynamics and, by using nonlinear input-to-state stability\ud theory, the current-limiting property of the inverter is ...
Zhong, Q., Konstantopoulos, G.
openaire   +2 more sources

One‐Step Fabrication of Highly Transparent Superhydrophobic Coatings Via Atmospheric Pressure Radio Frequency Plasma Deposition

Advanced Materials Interfaces, EarlyView.
Atmospheric‐pressure RF plasma deposition enables the fabrication of transparent, superhydrophobic coatings with anti‐reflective functionality. Process optimization yields high optical transmittance, robust environmental stability, and self‐cleaning properties.
Sultan S. Ussenkhan, Baglan A. Kyrykbay, Almasbek U. Utegenov, Sagi A. Orazbayev, Assanali T. Sultanov, Maratbek T. Gabdullin, Tlekkabul S. Ramazanov, Yerassyl Yerlanuly   +7 more
wiley   +1 more source

Transient Stability Control Method for Droop-Controlled Photovoltaics, Based on Power Angle Deviation Feedback

Energies
Distributed photovoltaic grid-connected converters adopting droop control can provide dual support for voltage and frequency in the distribution system.
Youzhuo Zheng, Zekun Xiao, Long Hua, Qi Guo, Chun Li, Kailei Chen   +5 more
doaj   +1 more source

Optimal Multidimensional Droop Control for Wind Resources in DC Microgrids

Energies, 2018
The inclusion of electricity generation from wind in microgrids presents an important opportunity in modern electric power systems. Various control strategies can be pursued for wind resources connected in microgrids, and droop control is a promising ...
Kaitlyn J. Bunker, Wayne W. Weaver
doaj   +1 more source

3D Printed Multimaterial Microfluidic Transistors

Advanced Materials Technologies, EarlyView.
We introduce a biocompatible, high resolution photopolymer resin that closely mimics the Young's Modulus (elasticity) and reversible stretchability (no hysteresis) of poly(dimethylsiloxane) (PDMS), enabling the fabrication of microfluidic transistors (i.e., microvalves capable of proportional amplification) by multimaterial stereolithography (mSLA ...
Alireza Ahmadianyazdi, Wei Huang, Kaustav A. Gopinathan, Ivan Stepanov, Lisa Horowitz, Ting‐Yuan Tu, Mehmet Toner, Albert Folch   +7 more
wiley   +1 more source

Passive Shape‐Adaptive Fluidic Interface for Enhanced Skin‐Sensor Coupling in Wearable Devices

Advanced Materials Technologies, EarlyView.
This study presents a passive fluidic interface for wearable biosensors that adapts to static and dynamic body shape changes to maintain consistent skin contact. Flexible, fluid‐filled pouches redistribute pressure from high‐load areas to regions requiring improved contact, enhancing signal quality and comfort in a compact, low‐energy design for ...
Natalia Sanchez‐Tamayo, Andrew Akerson, Ehsan Hajiesmaili, Tianshu Liu, Ryan Stull, Jonathan Stewart, Amirhossein Amini   +6 more
wiley   +1 more source