Novel two-dimensional crystalline carbon nitrides beyond g-C3N4: structure and applications

2021 ◽  
Vol 9 (1) ◽  
pp. 17-33
Author(s):  
Li Tan ◽  
Chunyang Nie ◽  
Zhimin Ao ◽  
Hongqi Sun ◽  
Taicheng An ◽  
...  

Recent advances in the synthesis of 2D CxNy nanocrystals and their properties and applications are summarized; future challenges and opportunities for 2D CxNy nanocrystals are also discussed.

Small Science ◽  
2020 ◽  
pp. 2000053
Author(s):  
Jianghong Wu ◽  
Hui Ma ◽  
Peng Yin ◽  
Yanqi Ge ◽  
Yupeng Zhang ◽  
...  

2019 ◽  
Vol 12 (1) ◽  
pp. 201-224 ◽  
Author(s):  
Ian S. Gilmore ◽  
Sven Heiles ◽  
Cornelius L. Pieterse

There is an increasing appreciation that every cell, even of the same type, is different. This complexity, when additionally combined with the variety of different cell types in tissue, is driving the need for spatially resolved omics at the single-cell scale. Rapid advances are being made in genomics and transcriptomics, but progress in metabolomics lags. This is partly because amplification and tagging strategies are not suited to dynamically created metabolite molecules. Mass spectrometry imaging has excellent potential for metabolic imaging. This review summarizes the recent advances in two of these techniques: matrix-assisted laser desorption ionization (MALDI) and secondary ion mass spectrometry (SIMS) and their convergence in subcellular spatial resolution and molecular information. The barriers that have held back progress such as lack of sensitivity and the breakthroughs that have been made including laser-postionization are highlighted as well as the future challenges and opportunities for metabolic imaging at the single-cell scale.


CrystEngComm ◽  
2021 ◽  
Vol 23 (37) ◽  
pp. 6454-6469
Author(s):  
Yiqun Zheng ◽  
Xiping Wang ◽  
Yuhan Kong ◽  
Yanyun Ma

In this highlight article, the recent progress on the preparation and application of multimetallic alloy nanocrystals with 2D nanostructures is systematically reviewed, as well as perspectives on future challenges and opportunities.


2020 ◽  
Vol 30 (Supplement_5) ◽  
Author(s):  
H Hilderink

Abstract The four-year Public Health Foresight Study (VTV) provides insight into the most important societal challenges for public health and health care in the Netherlands. The seventh edition of the Dutch Public Health Foresight study was published in 2018, with an update in 2020. In this update a business-as-usual or Trend Scenario was developed using 2018 as a base year. In the trend scenario demographic and epidemiological projections have been used to depict the future trends regarding ageing, health, disease, health behaviors, health expenditures and health inequalities. Next, these trends are used to identify the most important future challenges and opportunities for public health. In the 2020 update, special attentions is given to climate change and the local living environment and their impacts and interaction with public health outcomes. Trends in lifestyle-related lifestyle show both positive (smoking prevalence) and negative (overweight prevalence) future developments. Dementia will be the leading cause of mortality and disease burden in 2040 by far. Health care expenditures will double by 2040, with cancers showing the most rapid growth of all disease groups. The insights of this study are directly used as input for the National Health Policy Memorandum and for the National Prevention Accord.


Nanophotonics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 2315-2340 ◽  
Author(s):  
Junli Wang ◽  
Xiaoli Wang ◽  
Jingjing Lei ◽  
Mengyuan Ma ◽  
Cong Wang ◽  
...  

AbstractDue to the unique properties of two-dimensional (2D) materials, much attention has been paid to the exploration and application of 2D materials. In this review, we focus on the application of 2D materials in mode-locked fiber lasers. We summarize the synthesis methods for 2D materials, fiber integration with 2D materials and 2D materials based saturable absorbers. We discuss the performance of the diverse mode-locked fiber lasers in the typical operating wavelength such as 1, 1.5, 2 and 3 μm. Finally, a summary and outlook of the further applications of the new materials in mode-locked fiber lasers are presented.


Ceramics ◽  
2021 ◽  
Vol 4 (1) ◽  
pp. 20-40
Author(s):  
Ambreen Nisar ◽  
Cheng Zhang ◽  
Benjamin Boesl ◽  
Arvind Agarwal

Spark plasma sintering (SPS) has gained recognition in the last 20 years for its rapid densification of hard-to-sinter conventional and advanced materials, including metals, ceramics, polymers, and composites. Herein, we describe the unconventional usages of the SPS technique developed in the field. The potential of various new modifications in the SPS technique, from pressureless to the integration of a novel gas quenching system to extrusion, has led to SPS’ evolution into a completely new manufacturing tool. The SPS technique’s modifications have broadened its usability from merely a densification tool to the fabrication of complex-shaped components, advanced functional materials, functionally gradient materials, interconnected materials, and porous filter materials for real-life applications. The broader application achieved by modification of the SPS technique can provide an alternative to conventional powder metallurgy methods as a scalable manufacturing process. The future challenges and opportunities in this emerging research field have also been identified and presented.


2021 ◽  
pp. 535-556
Author(s):  
Harini Gunda ◽  
Leonard E. Klebanoff ◽  
Peter Anand Sharma ◽  
Akash K. Varma ◽  
Varun Dolia ◽  
...  

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