Suspensions of carbon nanofibers in organic medium: rheo-electrical properties

2015 ◽  
Vol 17 (48) ◽  
pp. 32316-32327 ◽  
Author(s):  
Mohamed Youssry ◽  
Dominique Guyomard ◽  
Bernard Lestriez
Keyword(s):  
Electrical Properties ◽  
Aspect Ratio ◽  
Carbon Nanofibers ◽  
Propylene Carbonate ◽  
High Aspect Ratio ◽  
Structural Evolution ◽  
Organic Medium

The nonaqueous suspensions of carbon nanofibers (CNFs) in 1 M lithium bis(trifluoromethanesulfonaimide) in propylene carbonate electrolyte reveal unique structural evolution and shear-induced transition due to the high aspect ratio.

scholarly journals Size Distribution, Mechanical and Electrical Properties of CuO Nanowires Grown by Modified Thermal Oxidation Methods

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1051 ◽  
Author(s):  
Raitis Sondors ◽  
Jelena Kosmaca ◽  
Gunta Kunakova ◽  
Liga Jasulaneca ◽  
Matiss Martins Ramma ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Aspect Ratio ◽  
Electric Field ◽  
Thermal Oxidation ◽  
Size Distribution ◽  
High Aspect Ratio ◽  
Growth Conditions ◽  
Cuo Nanowires ◽  
Young’S Moduli ◽  
Order Of Magnitude

Size distribution, Young’s moduli and electrical resistivity are investigated for CuO nanowires synthesized by different thermal oxidation methods. Oxidation in dry and wet air were applied for synthesis both with and without an external electrical field. An increased yield of high aspect ratio nanowires with diameters below 100 nm is achieved by combining applied electric field and growth conditions with additional water vapour at the first stage of synthesis. Young’s moduli determined from resonance and bending experiments show similar diameter dependencies and increase above 200 GPa for nanowires with diameters narrower than 50 nm. The nanowires synthesized by simple thermal oxidation possess electrical resistivities about one order of magnitude lower than the nanowires synthesized by electric field assisted approach in wet air. The high aspect ratio, mechanical strength and robust electrical properties suggest CuO nanowires as promising candidates for NEMS actuators.

Morphology and electrical properties of high aspect ratio ZnO nanowires grown by hydrothermal method without repeated batch process

2012 ◽  
Vol 101 (8) ◽  
pp. 083905 ◽  
Author(s):  
Jin Woo Cho ◽  
Churl Seung Lee ◽  
Kyoung Il Lee ◽  
Seon Min Kim ◽  
Sung Hyun Kim ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Aspect Ratio ◽  
Hydrothermal Method ◽  
High Aspect Ratio ◽  
Batch Process ◽  
Zno Nanowires ◽  
Repeated Batch ◽  
Repeated Batch Process

scholarly journals Template-Assisted Synthesis of Luminescent Carbon Nanofibers from Beverage-Related Precursors by Microwave Heating

Molecules ◽  
2019 ◽  
Vol 24 (8) ◽  
pp. 1455
Author(s):  
Deeney ◽  
McKiernan ◽  
Belhout ◽  
Rodriguez ◽  
Redmond ◽  
...  
Keyword(s):  
Reaction Time ◽  
Aspect Ratio ◽  
Microwave Heating ◽  
Carbon Nanofibers ◽  
Carbon Fibers ◽  
High Aspect Ratio ◽  
Carbon Nanomaterials ◽  
Short Reaction Time ◽  
One Dimensional ◽  
Template Assisted Synthesis

Luminescent carbon nanomaterials are important materials for sensing, imaging, and display technologies. This work describes the use of microwave heating for the template-assisted preparation of luminescent carbon nanofibers (CNFs) from the reaction of a range of beverage-related precursors with the nitrogen-rich polyethyleneimine. Highly luminescent robust carbon fibers that were 10 to 30 m in length and had a diameter of 200 nm were obtained under moderate conditions of temperature (250–260 °C) and a short reaction time (6 min). The high aspect ratio fibers showed wavelength-dependent emission that can be readily imaged using epifluorescence. The development of these multi-emissive one-dimensional (1D) carbon nanomaterials offers potential for a range of applications.

scholarly journals Ligand-Related Precursors of Luminescent Carbon Nanofibers Synthesized by Microwave Reaction

2019 ◽  
Author(s):  
Clara Deeney ◽  
Eoin P. McKiernan ◽  
Samir A. Belhout ◽  
Brian J. Rodriguez
Keyword(s):  
Reaction Time ◽  
Aspect Ratio ◽  
Microwave Heating ◽  
Carbon Nanofibers ◽  
Carbon Fibers ◽  
High Aspect Ratio ◽  
Carbon Nanomaterials ◽  
Short Reaction Time ◽  
One Dimensional ◽  
Microwave Reaction

Luminescent carbon nanomaterials are important materials for sensing, imaging, and display technologies. This work describes the use of microwave heating for the template-assisted preparation of luminescent carbon nanofibers (CNFs) from the reaction of a range of beverage-related precursors with the nitrogen-rich polyethyleneimine. Highly luminescent robust carbon fibers that were 10 to 30 μm in length and had a diameter of 200 nm were obtained under moderate conditions of temperature (250–260 °C) and a short reaction time (6 min). The high aspect ratio fibers showed wavelength-dependent emission that can be readily imaged using epifluorescence. The development of these multi-emissive one-dimensional (1D) carbon nanomaterials offers potential for a range of applications.

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