Results 131 to 140 of about 57,919 (311)
Advanced Science, EarlyView.Inspired by biological ion transport, this work introduces self‐powered multifunctional sensors utilizing tailored hydrogel stacks. Optimizing ionic migration with MXenes and carbon nanotubes achieves high‐performance energy harvesting and unique logic circuit functionality.
Haoran Chen +9 more
wiley +1 more source
Advanced Science, EarlyView.Here, we establish a quantitative relationship between the electrostriction coefficient (Q33) of FRPs and their interplanar spacing (d): Q33 = 100(Δd/d0+1) × Q33(s). Using this model, we fabricated high‐performance soft robots, including a biomimetic crawler (with a speed of 27 cm/s) and a butterfly (with a thrust‐to‐weight ratio of 0.71).
Ba Qin +8 more
wiley +1 more source
This paper presents a comparative feasibility study of coupled inductor implementation in a three-level neutral-point-clamped quasi-Z-source (3L-NPC qZS) DC/AC converter.
Zaķis, Jānis +2 more
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Advanced Science, EarlyView.Stem cell differentiation follows a conserved surface condensate trajectory: H3K27ac super enhancers nucleate large RNA polymerase II clusters that grow and unfold before transcriptional activity disperses them. This work reveals how biophysical forces at enhancer surfaces dynamically build and dismantle stem cell transcription hubs, reshaping cell ...
Tim Klingberg +18 more
wiley +1 more source
AC-DC Cuk Converter: A State-of-the-Art topological review
Energy Conversion and Management: XAC-DC converters, which transform alternating current (AC) into controlled direct current (DC), are key instruments for systems requiring stable and efficient power conversion.
Istiak Ahmed +6 more
doaj +1 more source
Design of Current Source DC/DC Converter and Inverter for 2kW Fuel Cell Application
In order to use hydrogen fuel cell in domestic applications either as main power supply or backup power source, the low DC output voltage of the fuel cell has to be matched to the voltage level and frequency of the utility grid AC voltage.
Andreičiks, Aleksandrs +3 more
core
, 2010 The main purpose of this paper is to introduce an approach to design a DC-DC boost converter with constant output voltage for grid connected photovoltaic application system.
Chan, Pui Weng
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Advanced Science, EarlyView.A BN@G‐POSS/EP nanocomposite is developed for high‐frequency transformer insulation in power electronic transformers. Through synergistic interface engineering, it simultaneously enhances thermal conductivity, reduces viscosity, and improves electro‐thermal stability.
Jun Jiang +6 more
wiley +1 more source
, 2009 The paper presents a detail comparison between two voltage source converter high voltage dc transmission systems, the first is based on neutral point-clamped (also known as HVDC-Light) and the second is based on innovative modular multilevel converter ...
Anaya-Lara, O. +5 more
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