Results 71 to 80 of about 6,072,506 (289)

Recent Advances in Laser‐Induced Graphene‐Based Gas Sensors: From Sensing Mechanisms to Biomedical Applications

open access: yesAdvanced Science, EarlyView.
Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Md Abu Sayeed Biswas   +6 more
wiley   +1 more source

Finite element analysis of PEMFC assembling based on ANSYS

open access: yesInternational Journal of Electrochemical Science, 2018
Proton exchange membrane fuel cells (PEMFC) are composed of end plates, flow fields, the membrane electrode assembly (MEA) and sealing components.
Guilin Hu   +5 more
doaj   +1 more source

Atomic Defects in Layered Transition Metal Dichalcogenides for Sustainable Energy Storage and the Intelligent Trends in Data Analytics

open access: yesAdvanced Science, EarlyView.
This review comprehensively summarizes the atomic defects in TMDs for their applications in sustainable energy storage devices, along with the latest progress in ML methodologies for high‐throughput TEM data analysis, offering insights on how ML‐empowered microscopy facilitates bridging structure–property correlation and inspires knowledge for precise ...
Zheng Luo   +6 more
wiley   +1 more source

Fuel starvation in automotive PEMFC stacks: a self-enhancing overheating mechanism

open access: yesJPhys Energy
The irregular operation state of fuel gross starvation can endanger the robustness of low temperature proton exchange membrane fuel cell stacks. Such detrimental effects of fuel starvation are typically investigated on the level of lab-scale single cells.
Jens Nissen   +5 more
doaj   +1 more source

Synergistic Spin‐Polarization and Single‐Atom Engineering in Magnetic Heterojunctions for Efficient Solar Water Splitting

open access: yesAdvanced Science, EarlyView.
High‐throughput screening led to the identification of 67 Z‐scheme heterojunctions (comprising 2D magnetic transition metal halides and non‐magnetic transition metal chalcogenides). For CrI3/MoTe2 and CrI3/WTe2, electronic structure analysis demonstrated that synergistic crystallographic point group and built‐in electric field effects generate a ...
Hongyang Ren   +8 more
wiley   +1 more source

A Hybrid Experimental Model of a Solid Oxide Fuel Cell Stack

open access: yes, 2009
A multivariable hybrid experimental model of a solid oxide fuel cell stack is developed in this paper. The model consists of an improved radial basis function (RBF) neural network model and a pressure-incremental model. The improved RBF model is built to
Zhu, Xin-Jian   +5 more
core   +1 more source

Smart Nanotechnologies for Multimodal Neuromodulation and Brain Interfacing

open access: yesAdvanced Science, EarlyView.
Recent advances in smart nanotechnologies are expanding the toolbox for brain interfacing, from wireless neuromodulation and high‐resolution sensing to targeted delivery within the central nervous system. By combining responsive nanomaterials with bioinspired design, these platforms enable multimodal interactions with neurons and glia, while also ...
Tommaso Curiale   +6 more
wiley   +1 more source

Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks

open access: yesAdvanced Science, EarlyView.
Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley   +1 more source

Transient numerical fluid analysis on gas distribution to anode cells of a fuel cell stack under start-up condition

open access: yesNihon Kikai Gakkai ronbunshu, 2015
Catalyst degradation on both the anode and cathode sides is one of the most critical problems caused by lack of hydrogen in each channel in the active area of a polymer electrolyte fuel cell.
Yasushi ICHIKAWA   +2 more
doaj   +1 more source

Production of a monolithic fuel cell stack with high power density. [PDF]

open access: yesNat Commun, 2022
Pirou S   +19 more
europepmc   +1 more source

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