Field emission from single-walled carbon nanotubes aligned on a gold plate using a self-assembly monolayer

Lee, O.J.; Jeong, Soo‐Hwan; Lee, K.H.

doi:10.1007/s00339-002-1492-7

Cited by 7 publications

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“…Jo et al [25] studied the field emission of carbon nanotubes (MWNTs) grown on carbon cloth and obtained a field enhancement factor of 3.5 Â 10 4 cm. This suggests that our results are in good agreement with the other workers [23][24][25]. Therefore, we see that the best field emission parameters with lowest turn-on field (E to ) and highest field enhancement factor () are obtained for working distance (d ) 150 mm.…”

Section: Field Emission Studiessupporting

confidence: 91%

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Field emission properties of Fe₇₀Pt₃₀catalysed multiwalled carbon nanotubes

Khan

Tripathi

Aggarwal

et al. 2007

Journal of Experimental Nanoscience

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Multi-walled carbon nanotubes were grown on nanocrystalline Fe 70 Pt 30 film using low-pressure chemical vapour deposition (LPCVD) method. The growth time was varied between 5 min to 30 min. SEM micrograph of this film revealed that the size of nanoparticles varied from 5 nm to 10 nm. The diameter of the carbon nanotubes varied from 20 nm to 50 nm as verified by TEM. HRTEM image confirmed that the carbon nanotubes are bamboo-shaped multiwalled carbon nanotubes (MWNTs). Field emission characteristics of MWNTs at various growth times (5 min, 15 min and 30 min) with working distances (50 mm, 100 mm and 150 mm) were also studied. The carbon nanotubes grown for 30 min with working distance 150 mm exhibited the lowest turn-on field of 2.45 V/mm. The turn-on field increases from 2.45 V/mm to 6.21 V/mm as the growth time decreases from 30 min to 5 min whereas for lower working distances (100 mm and 50 mm), the turn-on field increases from 4.74 V/mm to 6.74 V/mm and from 8.79 V/mm to 14.49 V/mm respectively. The turn-on field (E to) and field enhancement factor () were studied as a function working distance (d) and growth time respectively to see the effect of these parameters on field emission properties. The field enhancement factor () was also studied as a function of radius of apex curvature (r). It was found the field enhancement factor () decreases with the increase in radius of apex curvature (r) and growth time whereas the value of field enhancement factor () increases as working distance (d) increases. On the basis of the dependence of on radius of apex curvature (r) a relationship of / r À1/2 is fitted.

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Section: Field Emission Studiessupporting

confidence: 91%

“…Lee et al [23] studied the field emission properties of CNTs and showed that the turn-on field was 4.8 V/mm at an emission density of 10 mA/cm 2 . Saito et al [24] calculated the field enhancement factor in the range of 10 4 cm À1 to 10 5 cm À1 for MWNTs.…”

Section: Field Emission Studiesmentioning

confidence: 99%

Field emission properties of Fe₇₀Pt₃₀catalysed multiwalled carbon nanotubes

Khan

Tripathi

Aggarwal

et al. 2007

Journal of Experimental Nanoscience

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Reactivities of the Prism‐Shaped Diamondoids [1(2)3]Tetramantane and [12312]Hexamantane (Cyclohexamantane)

Fokin

Tkachenko

Fokina

et al. 2009

Chemistry A European J

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Various functional groups have been incorporated into the structures of the naturally occurring diamondoids [1(2)3]tetramantane and [12312]hexamantane (cyclohexamantane), which represent hydrogen-terminated prism-shaped nanodiamonds. The selectivities of the C-H substitutions in [1(2)3]tetramantane depend on the reagent employed and give products substituted at either central (through bromination) or peripheral (through nitroxylation and photo-oxidation) positions. The hydrogen-coupled electron-transfer mechanism of C-H nitroxylation with the model electrophile NO(2)(+)...HNO(3) was verified computationally at the B3PW91 and MP2 levels of theory by utilizing the 6-31G(d) and cc-pVDZ basis sets. The thermodynamically controlled nitroxylation/isomerization of [1(2)3]tetramantane allows the preparation of peripherally trisubstituted derivatives, which were transformed into tripod-like nanodiamond building blocks. The bromination of cyclohexamantane selectively gives the 2-bromo derivative, reproducing the chemical behavior of the {111} surface of the hydrogen-terminated diamond.

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Synthesis of single-walled carbon nanotubes in mesoporous silica film and their field emission property

et al. 2006

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Field emission from single-walled carbon nanotubes aligned on a gold plate using a self-assembly monolayer

Cited by 7 publications

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Field emission properties of Fe₇₀Pt₃₀catalysed multiwalled carbon nanotubes

Field emission properties of Fe₇₀Pt₃₀catalysed multiwalled carbon nanotubes

Reactivities of the Prism‐Shaped Diamondoids [1(2)3]Tetramantane and [12312]Hexamantane (Cyclohexamantane)

Synthesis of single-walled carbon nanotubes in mesoporous silica film and their field emission property

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Field emission from single-walled carbon nanotubes aligned on a gold plate using a self-assembly monolayer

Cited by 7 publications

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Field emission properties of Fe70Pt30catalysed multiwalled carbon nanotubes

Field emission properties of Fe70Pt30catalysed multiwalled carbon nanotubes

Reactivities of the Prism‐Shaped Diamondoids [1(2)3]Tetramantane and [12312]Hexamantane (Cyclohexamantane)

Synthesis of single-walled carbon nanotubes in mesoporous silica film and their field emission property

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Field emission properties of Fe₇₀Pt₃₀catalysed multiwalled carbon nanotubes

Field emission properties of Fe₇₀Pt₃₀catalysed multiwalled carbon nanotubes