Results 211 to 220 of about 388,512 (255)

Beyond Thin Film Limits—Superhard and Hydrogen‐Free Amorphous Carbon Coatings With Over 100 µm Thickness

Advanced Functional Materials, EarlyView.
For the first time, an extreme‐thick laser‐arc PVD ta‐C (DLC) coating exceeding 100 µm is demonstrated, opening up new possibilities for ultra‐high load bearing capacity. This superhard amorphous carbon architecture combines >50% sp3 bonding, robust adhesion and self‐supporting performance, shielding substrates from plastic flow under extreme contact ...
Martin Zawischa, Frank Kaulfuß, Stefan Makowski, Volker Weihnacht   +3 more
wiley   +1 more source

The Effect of Hydrophilic Headgroup Chemistry on Peptoid‐Directed Mineralization of CaCO3

Advanced Functional Materials, EarlyView.
Amphiphilic peptoids alter the pathway and outcome of calcium carbonate crystallization, which progresses through amorphous calcium carbonate (ACC) to vaterite to calcite rhombs in the absence of peptoids. In contrast, amine‐terminated peptoids produce vaterite disks and carboxyl‐terminated peptoids produce calcite mesocrystals.
Biao Jin, Chunhui Wu, Thi Kim Hoang Trinh, Wenhao Zhou, Chun‐Long Chen, James J De Yoreo   +5 more
wiley   +1 more source

Intracrystalline Void‐Mediated Toughening of Brittle Crystals in Quail Eggshells

Advanced Functional Materials, EarlyView.
In quail eggshells, the high density and disordered arrangement of intracrystalline voids inhibit lattice cleavage, suppress long‐range crack propagation, and promote deformation twinning and quasi‐plasticity, serving as an essential toughening motif. We show that these voids remain within a narrow subcritical size range and therefore predominantly do ...
Jingxiao Zhong, Qihang Wang, Andre E. Vellwock, Sinuhe Perea Puente, Tingting Zhu, Jia Hui Lim, Kadda Medjoubi, Sebastian Hoerl, Erika Griesshaber, Wolfgang W. Schmahl, Yannicke Dauphin, Emeline Raguin, Peter Werner, Francesco Stellacci, Michael V. Swain, Peter Fratzl, Shahrouz Amini   +16 more
wiley   +1 more source

Nitrogen controls on plant carbon-use efficiency

, 2020
openaire   +1 more source

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Beyond microbial carbon use efficiency

2023
Microbial carbon use efficiency (CUE) is defined as the proportion of microbial biomass growth C versus substrate C uptake, and thus provides a useful measure of microbially driven accumulation and loss of soil organic carbon (SOC) 1. In a recent study published in Nature 2, the authors use a data-driven machine learning approach to conclude that CUE ...
Ke-Qing Xiao, Chao Liang, Zimeng Wang, Jingjing Peng, Yao Zhao, Ming Zhang, Mingyu Zhao, Yong-Guan Zhu, Caroline Peacock   +8 more
openaire   +1 more source

Simple and Efficient Synthesis of Functionalized Cyclic Carbonate Monomers Using Carbon Dioxide

ACS Macro Letters, 2022
Aliphatic polycarbonates represent an important class of materials with diverse applications ranging from battery electrolytes, polyurethane intermediates, and materials for biomedical applications. These materials can be produced via the ring-opening polymerization (ROP) of six- to eight-membered cyclic carbonates derived from precursor 1,3- and 1,5 ...
James L. Hedrick, Victoria Piunova, Nathaniel H. Park, Tim Erdmann, Pedro L. Arrechea   +4 more
openaire   +2 more sources

Using Instancing to Efficiently Render Carbon Nanotubes [PDF]

, 2022
In this paper, we present an effcient way to visualize Super Carbon Nanotubes (SCNTs). SCNTs are complex, hierarchical structures and their models easily consist of more than 1 million atoms. Our SCNTs are modeled as graphs of uniform nodes and egdes. We show that OpenGL instancing is a very suitable technique for rendering such large graphs, because ...
Burger, Michael, Bischof, Christian
openaire   +1 more source

Carbon efficiency of US colleges and universities: a nonparametric assessment

Applied Economics, 2014
Under the American College and University Presidents’ Climate Commitment (ACUPCC), institutes of higher education have pledged to pursue a goal of carbon neutrality. This involves reorienting the institution’s objective function to incorporate emissions as an undesirable output as well as the desirable outputs of teaching and research which have been ...
Michael O'Hara, Philip Sirianni
openaire   +1 more source

Carbon isotopes and water use efficiency: sense and sensitivity

Oecologia, 2008
We revisit the relationship between plant water use efficiency and carbon isotope signatures (delta(13)C) of plant material. Based on the definitions of intrinsic, instantaneous and integrated water use efficiency, we discuss the implications for interpreting delta(13)C data from leaf to landscape levels, and across diurnal to decadal timescales ...
Ulli, Seibt, Abazar, Rajabi, Howard, Griffiths, Joseph A, Berry   +3 more
openaire   +2 more sources

Dilemmas in Linking Microbial Carbon Use Efficiency With Soil Organic Carbon Dynamics

Global Change Biology
There are still large uncertainties on the relationships between microbial carbon use efficiency and soil organic carbon across (1) different carbon use efficiency estimation methods, (2) various temporal, spatial and biological scales, and (3) multiple climate change scenarios.
Ji Chen, Yiqi Luo, Jiacong Zhou
exaly   +3 more sources