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A dynamic, network scale sediment (dis)connectivity model to reconstruct historical sediment transfer and river reach sediment budgets 期刊论文
Water Resources Research, 2022
作者:  Marco Tangi;  Simone Bizzi;  Kirstie Fryirs;  Andrea Castelletti
收藏  |  浏览/下载：6/0  |  提交时间：2022/02/16
From eyebrow beans to 'lost' rice: community seedbanks are protecting China's crops 新闻
来源平台：EurekAlert. 发布日期：2021
作者:  admin
收藏  |  浏览/下载：2/0  |  提交时间：2021/07/26
Stretching and folding sustain microscale chemical gradients in porous media 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (24) : 13359-13365
作者:  Heyman, Joris;  Lester, Daniel R.;  Turuban, Regis;  Meheust, Yves;  Le Borgne, Tanguy
收藏  |  浏览/下载：5/0  |  提交时间：2020/06/01
porous media  reactive transport  chaotic mixing  chemical gradients  
Closing the science gap in 3D metal printing 期刊论文
Science, 2020
作者:  Andrew T. Polonsky;  Tresa M. Pollock
收藏  |  浏览/下载：5/0  |  提交时间：2020/05/13
Wafer-scale single-crystal hexagonal boron nitride monolayers on Cu (111) 期刊论文
NATURE, 2020, 579 (7798) : 219-+
作者:  Luong, Duy X.;  Bets, Ksenia V.;  Algozeeb, Wala Ali;  Stanford, Michael G.;  Kittrell, Carter;  Chen, Weiyin;  Salvatierra, Rodrigo V.;  Ren, Muqing;  McHugh, Emily A.;  Advincula, Paul A.;  Wang, Zhe;  Bhatt, Mahesh;  Guo, Hua;  Mancevski, Vladimir;  Shahsavari, Rouzbeh
收藏  |  浏览/下载：80/0  |  提交时间：2020/07/03

Ultrathin two-dimensional (2D) semiconducting layered materials offer great potential for extending Moore'  s law of the number of transistors in an integrated circuit(1). One key challenge with 2D semiconductors is to avoid the formation of charge scattering and trap sites from adjacent dielectrics. An insulating van der Waals layer of hexagonal boron nitride (hBN) provides an excellent interface dielectric, efficiently reducing charge scattering(2,3). Recent studies have shown the growth of single-crystal hBN films on molten gold surfaces(4) or bulk copper foils(5). However, the use of molten gold is not favoured by industry, owing to its high cost, cross-contamination and potential issues of process control and scalability. Copper foils might be suitable for roll-to-roll processes, but are unlikely to be compatible with advanced microelectronic fabrication on wafers. Thus, a reliable way of growing single-crystal hBN films directly on wafers would contribute to the broad adoption of 2D layered materials in industry. Previous attempts to grow hBN monolayers on Cu (111) metals have failed to achieve mono-orientation, resulting in unwanted grain boundaries when the layers merge into films(6,7). Growing single-crystal hBN on such high-symmetry surface planes as Cu (111)(5,8) is widely believed to be impossible, even in theory. Nonetheless, here we report the successful epitaxial growth of single-crystal hBN monolayers on a Cu (111) thin film across a two-inch c-plane sapphire wafer. This surprising result is corroborated by our first-principles calculations, suggesting that the epitaxial growth is enhanced by lateral docking of hBN to Cu (111) steps, ensuring the mono-orientation of hBN monolayers. The obtained single-crystal hBN, incorporated as an interface layer between molybdenum disulfide and hafnium dioxide in a bottom-gate configuration, enhanced the electrical performance of transistors. This reliable approach to producing wafer-scale single-crystal hBN paves the way to future 2D electronics.


  
Bedload Sediment Transport Regimes of Semi-alluvial Rivers Conditioned by Urbanization and Stormwater Management 期刊论文
WATER RESOURCES RESEARCH, 2019, 55 (12) : 10565-10587
作者:  Papangelakis, E.;  MacVicar, B.;  Ashmore, P.
收藏  |  浏览/下载：16/0  |  提交时间：2020/02/16
bedload transport  urbanization  stormwater management  tracers  semi-alluvial  sediment transport regime  
Mimicking Geologic Depositional Fabrics for Multiphase Flow Experiments 期刊论文
WATER RESOURCES RESEARCH, 2019
作者:  Krishnamurthy, Prasanna G.;  Meckel, Tip A.;  DiCarlo, David
收藏  |  浏览/下载：4/0  |  提交时间：2020/02/16
Pore-Scale Investigation of Methane Hydrate Dissociation Using the Lattice Boltzmann Method 期刊论文
WATER RESOURCES RESEARCH, 2019
作者:  Zhang, Liming;  Zhang, Chuangde;  Zhang, Kai;  Zhang, Lei;  Yao, Jun;  Sun, Hai;  Yang, Yongfei
收藏  |  浏览/下载：6/0  |  提交时间：2019/11/27
methane hydrate  lattice Boltzmann method  dissociation  pore scale  permeability variation  
Ripple Effects: Bed Form Morphodynamics Cascading Into Hyporheic Zone Biogeochemistry 期刊论文
WATER RESOURCES RESEARCH, 2019, 55 (8) : 7320-7342
作者:  Zheng, Lizhi;  Cardenas, M. Bayani;  Wang, Lichun;  Mohrig, David
收藏  |  浏览/下载：20/0  |  提交时间：2019/11/27
Resolving the invasion paradox: pervasive scale and study dependence in the native-alien species richness relationship 期刊论文
ECOLOGY LETTERS, 2019, 22 (6) : 1038-1046
作者:  Tomasetto, Federico;  Duncan, Richard P.;  Hulme, Philip E.
收藏  |  浏览/下载：7/0  |  提交时间：2019/11/26
Author effect  biological invasions  effect size  heterogeneity  meta-regression  spatial grain  weeds