Results 41 to 50 of about 836,731 (382)

Designing for Degradation: Transient Devices Enabled by (Nano)Cellulose

Advanced Materials, EarlyView.
Recent progress in transient devices enabled by (nano)cellulosic materials is reviewed. Transiency mechanisms, advantages of nanocelluloses, and a suite of applications are discussed. A circular thinking approach coupled with life cycle assessment is applied to critically revisit the potential, advantages, and challenges of nanocellulose‐enabled ...
Lucas J. Andrew, Erlantz Lizundia, Mark J. MacLachlan   +2 more
wiley   +1 more source

Epitaxial Ferroelectric Hexagonal Boron Nitride Grown on Graphene

Advanced Materials, EarlyView.
The epitaxial growth of hexagonal boron nitride (h‐BN) multilayer films on graphene, synthesized on a miscut SiC (0001) substrate, is demonstrated using nitrogen plasma‐assisted molecular‐beam epitaxy. Robust ferroelectricity with switchable out‐of‐plane polarization via interlayer sliding is supported by theoretical and experimental insights ...
Sheng‐Shong Wong, Zhen‐You Lin, Sheng‐Zhu Ho, Chih‐En Hsu, Ping‐Hung Li, Ching‐Yu Chen, Yen‐Fu Huang, Kuo‐En Chang, Yu‐Chiang Hsieh, Chia‐Hao Chen, Ming‐Hao Lee, Ming‐Wen Chu, Kuang‐I Lin, Tse‐Ming Chen, Yi‐Chun Chen, Hung‐Chung Hsueh, Cheng‐Maw Cheng, Chung‐Lin Wu   +17 more
wiley   +1 more source

COVID‐19 in the Pacific territories: Isolation, borders and the complexities of governance

Asia &the Pacific Policy Studies, Volume 9, Issue 3, Page 394-407, September 2022., 2022
Abstract Early experience of COVID‐19 in seven Pacific politically dependent territories (Guam, American Samoa, Pitcairn, Tokelau, French Polynesia, Wallis and Futuna, and New Caledonia) emphasises a diversity of contexts, responses, outcomes and possible futures.
John Connell
wiley   +1 more source

Spark Ignition Measurements in Jet A: part II [PDF]

, 2000
An improved system for measuring the ignition energy of liquid fuel was built to perform experiments on aviation kerosene (Jet A). Compared to a previously used system (Shepherd et al. 1998), the present vessel has a more uniform temperature which can be
Lee, Julian J., Shepherd, Joseph E.
core  

Wood and Cellulose: the Most Sustainable Advanced Materials for Past, Present, and Future Civilizations

Advanced Materials, EarlyView.
Wood and cellulose are the most abundant and important sustainable materials on the planet at the disposal to solve major societal challenges. This perspective, written for all materials scientists, highlights how breakthroughs in cellulose nanotechnology combined with functional nanomaterials can revolutionize important areas like construction ...
Mahiar Max Hamedi, Mats Sandberg, Richard T. Olsson, Jan Pedersen, Tobias Benselfelt, Jakob Wohlert   +5 more
wiley   +1 more source

The Influence of Charge Motion on Pre-Chamber and Main Chamber Combustion in a Highly Dilute Jet Ignition Engine

Frontiers in Mechanical Engineering, 2021
Though there are multiple viable powertrain options available for the automotive sector, those that contain internal combustion engines will continue to account for the majority of global sales for the next several decades.
Michael Bunce, Michael Bunce, Alasdair Cairns, Sai Krishna Pothuraju Subramanyam, Nathan Peters, Hugh Blaxill   +5 more
doaj   +1 more source

Data-driven Analysis of Relight variability of Jet Fuels induced by Turbulence [PDF]

arXiv, 2020
For safety purposes, reliable reignition of aircraft engines in the event of flame blow-out is a critical requirement. Typically, an external ignition source in the form of a spark is used to achieve a stable flame in the combustor. However, such forced turbulent ignition may not always successfully relight the combustor, mainly because the state of ...
arxiv  

Quantifying the Risk of Wildfire Ignition by Power Lines under Extreme Weather Conditions [PDF]

arXiv, 2021
Utilities in California conduct Public Safety Power Shut-offs (PSPSs) to eliminate the elevated chances of wildfire ignitions caused by power lines during extreme weather conditions. We propose Wildfire Risk Aware operation planning Problem (WRAP), which enables system operators to pinpoint the segments of the network that should be de-energized ...
arxiv  

Gas-phase and heat-exchange effects on the ignition of high- and low-exothermicity porous solids subject to constant heating

, 2006
This article investigates the ignition of low-exothermicity reactive porous solids exposed to a maintained source of heat (hotspot), without oxygen limitation.
Brindley, J., Griffiths, J., McIntosh, A., Shah, A.A.   +3 more
core   +1 more source

10 Years Development of Potassium‐Ion Batteries

Advanced Materials, EarlyView.
Significant progress is made in PIBs over the past decade, but the improvements based on half‐cell testing, low mass loading, and low energy density are insufficient for practical applications. This review summarizes the challenges and strategies for PIBs, highlights the importance of further research focusing on full cells, and provides an analysis of
Mingnan Li, Caoyu Wang, Cheng Wang, Yanqiu Lyu, Jingxiu Wang, Shuixin Xia, Jianfeng Mao, Zaiping Guo   +7 more
wiley   +1 more source