Results 81 to 90 of about 97,348 (264)

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

Advanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen, Zhanxi Fan, Jingjie Ge, Qiyuan He, Zhuangchai Lai, Jiawei Liu, Chaoliang Tan, Hua Zhang   +7 more
wiley   +1 more source

Effects of valve needle speed on flow characteristics in control valve for unit pump fuel system

Advances in Mechanical Engineering, 2018
The control valve of a diesel unit pump fuel system adjusts the pressure of the high-pressure fuel line through rapid opening to achieve fuel cut-off control.
Tao Qiu, Hefei Dai, Yan Lei, Yuwei Liu
doaj   +1 more source

Rational Tuning of Hygroscopic Oscillation of Stacked Nanoflake Assemblies for Continuous Ambient Energy Harvesting

Advanced Materials, EarlyView.
Stacked nanoflake assembly (SNA) membranes can oscillate autonomously, offering opportunities for soft actuation and energy harvesting. This work uncovers the physical mechanism behind the sustained oscillation of SNA membranes in gradient humidity and identifies three governing dimensionless parameters, enabling rational design for optimizing SNA ...
Zijing Zhang, Jimin Fu, Gesa Zhang, Zhihua Liang, Boxun Zhang, Haimin Yao   +5 more
wiley   +1 more source

Thermal performance, emission and combustion characteristics of Manilkara Zapota seed oil biodiesel with hydrogen enrichment in CRDI diesel engine— An experimental approach

Case Studies in Thermal Engineering
The present experimental investigation aims to improve the thermal performance and combustion characteristics and minimize the emission characteristics of a CRDI diesel engine fueled using an MZO20 biodiesel blend with varying flow rates of hydrogen fuel
Ravishankar Sathyamurthy, Yazan Taamneh
doaj   +1 more source

Artificial Intelligence Meets Micro/Nanorobotics

Advanced Materials, EarlyView.
Artificial intelligence is transforming micro‐ and nanorobots from externally controlled, task‐specific machines into adaptive, autonomous systems. Machine learning, multimodal perception, digital twins, AI‐guided materials and geometry design enhance propulsion, localization, decision‐making, whichaccelerates clinical and environmental applications ...
Fatma M. Yurtsever, Minitha Cherukutty Ramakrishnan, Ian Kuula Ross, Ivan Zelinka, Hamed Shahsavan, Michal Otyepka, Martin Pumera   +6 more
wiley   +1 more source

Stefan Flow in Char Combustion: A Critical Review of Mass Transfer and Combustion Differences Between Air-Fuel and Oxy-Fuel Conditions

Energies
Fuel combustion is a crucial process in energy utilization. As a key bulk transport mechanism, Stefan flow significantly affects heat and mass transfer during char combustion.
Wenfei Bao, Zongwei Gan, Yuzhong Li, Yan Ma   +3 more
doaj   +1 more source

Esterified Cholesterol Conjugates Enable LNP‐Mediated mRNA Delivery to the Blood–Brain Barrier Following Intravenous Administration

Advanced Materials, EarlyView.
A cholesterol‐conjugated lipid library enabled the identification of a ligand‐free LNP platform for efficient mRNA delivery to brain endothelial cells via systemic administration. This platform achieves selective BBB targeting without disrupting barrier integrity, and enables modulation of neuroinflammation and vascular function without requiring trans‐
Zeru Tian, Xu Wang, Alexis Pacheco Benitez, Erick Guerrero, Yaou Duan, Jingwen Wei, Lukas Farbiak, Daniel J. Siegwart   +7 more
wiley   +1 more source

Numerical Analysis of Flow in U-Type Solid Oxide Fuel Cell Stacks

Energies
Numerical analysis of a U-type solid oxide fuel cell stack was performed using computational fluid dynamics to investigate the effects of stack capacities and fuel/air utilization rates on the internal flow uniformity.
Hao Yuan Yin, Kun Woo Yi, Young Jin Kim, Hyeon Jin Kim, Kyong Sik Yun, Ji Haeng Yu   +5 more
doaj   +1 more source

Numerical Investigation of Subcooled Flow Boiling Characteristics in Rod Bundle Channel of Petal-shape Fuel Element

Yuanzineng kexue jishu, 2023
The petal-shape fuel elements have the advantages of strong heat transfer performance and no need for a spacer grid, allowing the reactor’s power density and economics to be increased even further. The Eulerian two-fluid model in combination with the RPI
DU Lipeng;JIANG Zeping;CUI Jun;ZHANG Wenchao;HOU Yandong;CAI Weihua
doaj  

Radiative Thermal Management for Extreme Environments: Mechanisms and Design Strategies

Advanced Materials, EarlyView.
In this review, we discuss the fundamental mechanisms of radiative cooling and solar heating, material and structural design strategies, hybrid approaches integrating additional heat transfer pathways, and durability‐oriented designs addressing environmental stresses.
Hyung Rae Kim, Haeseong Kim, Joo Hwan Ko, Gil Ju Lee, Dae‐Hyeong Kim, Young Min Song   +5 more
wiley   +1 more source