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- W2010710192 abstract "A simple approach has been implemented to synthesize amorphous carbon nanotubes (a-CNTs) and manganese oxide (MnO2) hybrid nanostructure at temperature as low as ∼250 °C in open atmosphere. Microscopic studies of the samples revealed that the walls of the a-CNTs were coated uniformly by MnO2 nanoflakes. The composition of the as prepared sample was studied with the help of energy dispersive X-ray and X-ray photoelectron spectroscopy. Electron field emission study was done in a custom built high vacuum field emission setup for the prepared a-CNT and manganese oxide (MnO2) hybrid nanostructure. It is seen that the performance of the a-CNTs as cold cathode emitter has been enhanced greatly when MnO2 nanoflakes were coated uniformly over it. The turn on field has been reduced from 7.17 to value as low as 3.82 V/mm with enhancement factor increases from 2428 to 6965. Finite element based simulation study theoretically confirms the enhancement of field emission properties of as prepared MnO2 nanoflake coated a-CNTs. The results have been explained due to enhanced surface roughness leading to higher enhancement factor and overall increase of emission sites." @default.
- W2010710192 created "2016-06-24" @default.
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- W2010710192 date "2015-08-01" @default.
- W2010710192 modified "2023-09-23" @default.
- W2010710192 title "A simple chemical synthesis of amorphous carbon nanotubes–MnO2 flake hybrids for cold cathode application" @default.
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- W2010710192 doi "https://doi.org/10.1016/j.apsusc.2015.04.025" @default.
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