Method for Fabricating Arrays of Graphene Nanoribbons

2011 ◽  
Vol 1362 ◽  
Author(s):  
Pavel Khokhlov ◽  
Pavel Lazarev ◽  
Evgeny Morozov
Keyword(s):  
Thin Film Transistors ◽  
Recent Progress ◽  
Organic Molecules ◽  
Graphene Nanoribbons ◽  
Film Surface ◽  
Covalent Bonds ◽  
Ordered Arrays ◽  
Tribological Coatings ◽  
Smooth Film ◽  
Made In

ABSTRACTThis paper discusses recent progress made in developing an advanced sp2 carbon-based materials that can be produced by wet coating as a thin layer and processed to form highly ordered arrays of Graphene Nanoribbons (GNRs) that attach to the substrate on edge with their planes parallel to each other. The fabrication method is based on carbonization of organic molecules spatially preordered in crystalline film on the substrate. This material, named Ribtan, can be used to fabricate GNRs films over large areas that exhibit a very smooth film surface and can form strong covalent bonds to the substrate. The width (film thickness) of Ribtan GNRs can be controlled precisely down to a few nanometers. We demonstrated advantage of Ribtan material for application in supercapacitors as well as feasibility for use in transparent electrodes, solid tribological coatings, and thin film transistors.

Potential of Nanoparticles in Combating Candida Infections

2019 ◽  
Vol 16 (5) ◽  
pp. 478-491 ◽  
Author(s):  
Faizan Abul Qais ◽  
Mohd Sajjad Ahmad Khan ◽  
Iqbal Ahmad ◽  
Abdullah Safar Althubiani
Keyword(s):  
Targeted Delivery ◽  
Recent Progress ◽  
Antifungal Agents ◽  
Fungal Infections ◽  
Fold Increase ◽  
Antifungal Drugs ◽  
Low Toxicity ◽  
Candida Infections ◽  
Made In

Aims: The aim of this review is to survey the recent progress made in developing the nanoparticles as antifungal agents especially the nano-based formulations being exploited for the management of Candida infections. Discussion: In the last few decades, there has been many-fold increase in fungal infections including candidiasis due to the increased number of immunocompromised patients worldwide. The efficacy of available antifungal drugs is limited due to its associated toxicity and drug resistance in clinical strains. The recent advancements in nanobiotechnology have opened a new hope for the development of novel formulations with enhanced therapeutic efficacy, improved drug delivery and low toxicity. Conclusion: Metal nanoparticles have shown to possess promising in vitro antifungal activities and could be effectively used for enhanced and targeted delivery of conventionally used drugs. The synergistic interaction between nanoparticles and various antifungal agents have also been reported with enhanced antifungal activity.

scholarly journals Principles of Different X-ray Phase-Contrast Imaging: A Review

2021 ◽  
Vol 11 (7) ◽  
pp. 2971
Author(s):  
Siwei Tao ◽  
Congxiao He ◽  
Xiang Hao ◽  
Cuifang Kuang ◽  
Xu Liu
Keyword(s):  
Biological Samples ◽  
Phase Contrast ◽  
Recent Progress ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray ◽  
X Ray Imaging ◽  
Internal Structures ◽  
X Ray Absorption ◽  
Made In

Numerous advances have been made in X-ray technology in recent years. X-ray imaging plays an important role in the nondestructive exploration of the internal structures of objects. However, the contrast of X-ray absorption images remains low, especially for materials with low atomic numbers, such as biological samples. X-ray phase-contrast images have an intrinsically higher contrast than absorption images. In this review, the principles, milestones, and recent progress of X-ray phase-contrast imaging methods are demonstrated. In addition, prospective applications are presented.

scholarly journals Bimetallic Ni-Based Catalysts for CO2 Methanation: A Review

Nanomaterials ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 28
Author(s):  
Anastasios I. Tsiotsias ◽  
Nikolaos D. Charisiou ◽  
Ioannis V. Yentekakis ◽  
Maria A. Goula
Keyword(s):  
Low Temperature ◽  
Noble Metals ◽  
Recent Progress ◽  
Low Cost ◽  
Alloy Formation ◽  
Co2 Methanation ◽  
High Performing ◽  
Mobile Sources ◽  
Low Dispersion ◽  
Made In

CO2 methanation has recently emerged as a process that targets the reduction in anthropogenic CO2 emissions, via the conversion of CO2 captured from point and mobile sources, as well as H2 produced from renewables into CH4. Ni, among the early transition metals, as well as Ru and Rh, among the noble metals, have been known to be among the most active methanation catalysts, with Ni being favoured due to its low cost and high natural abundance. However, insufficient low-temperature activity, low dispersion and reducibility, as well as nanoparticle sintering are some of the main drawbacks when using Ni-based catalysts. Such problems can be partly overcome via the introduction of a second transition metal (e.g., Fe, Co) or a noble metal (e.g., Ru, Rh, Pt, Pd and Re) in Ni-based catalysts. Through Ni-M alloy formation, or the intricate synergy between two adjacent metallic phases, new high-performing and low-cost methanation catalysts can be obtained. This review summarizes and critically discusses recent progress made in the field of bimetallic Ni-M (M = Fe, Co, Cu, Ru, Rh, Pt, Pd, Re)-based catalyst development for the CO2 methanation reaction.

scholarly journals Recent Advances in the Development of Nano-Sculpted Films by Magnetron Sputtering for Energy-Related Applications

Nanomaterials ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 2039 ◽  
Author(s):  
Adriano Panepinto ◽  
Rony Snyders
Keyword(s):  
Thin Films ◽  
Magnetron Sputtering ◽  
Recent Progress ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
New Generation ◽  
Recent Experimental Work ◽  
Sensitized Solar Cells ◽  
Theoretical Results ◽  
Made In

In this paper, we overview the recent progress we made in the magnetron sputtering-based developments of nano-sculpted thin films intended for energy-related applications such as energy conversion. This paper summarizes our recent experimental work often supported by simulation and theoretical results. Specifically, the development of a new generation of nano-sculpted photo-anodes based on TiO2 for application in dye-sensitized solar cells is discussed.

Recent progress in the mechanochromism of phosphorescent organic molecules and metal complexes

2016 ◽  
Vol 4 (28) ◽  
pp. 6688-6706 ◽  
Author(s):  
Pengchong Xue ◽  
Jipeng Ding ◽  
Panpan Wang ◽  
Ran Lu
Keyword(s):  
Metal Complexes ◽  
Recent Progress ◽  
Organic Molecules ◽  
Mechanical Force ◽  
Spectral Shifts ◽  
Luminescence Color

Phosphorescent mechanochromic materials may change their luminescence color and intensity with large spectral shifts under a mechanical force stimulus.

Ionic liquids as bioactive chemical tools for use in agriculture and the preservation of agricultural products

2018 ◽  
Vol 20 (21) ◽  
pp. 4764-4789 ◽  
Author(s):  
Adrian Zajac ◽  
Rafal Kukawka ◽  
Anna Pawlowska-Zygarowicz ◽  
Olga Stolarska ◽  
Marcin Smiglak
Keyword(s):  
Ionic Liquids ◽  
Recent Progress ◽  
Agricultural Products ◽  
Bioactive Components ◽  
Chemical Tools ◽  
Made In

The review presents the recent progress made in the field of ionic liquids bearing bioactive components, with a particular emphasis on their use as chemical tools in agriculture and the preservation of agricultural products.

Recent progress in dynamic covalent chemistries for liquid crystal elastomers

2020 ◽  
Vol 8 (31) ◽  
pp. 6610-6623 ◽  
Author(s):  
Zhijian Wang ◽  
Shengqiang Cai
Keyword(s):  
Liquid Crystal ◽  
Recent Progress ◽  
Review Article ◽  
Covalent Bonds ◽  
Liquid Crystal Elastomers

This review article discusses the recent progress in designing, synthesizing and programming liquid crystal elastomers with different dynamic covalent bonds.

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