Superlattices from Diamond

2009 ◽  
Vol 1203 ◽  
Author(s):  
Hideyuki Watanabe ◽  
S. Shikata
Keyword(s):  
Vapor Deposition ◽  
Secondary Ion Mass Spectrometry ◽  
Microwave Plasma ◽  
Chemical Vapor ◽  
Band Gap Energy ◽  
Deposition Technique ◽  
Gap Energy ◽  
Vapor Deposition Technique ◽  
Pure Carbon ◽  
Secondary Ion

AbstractDiamond superlattices were fabricated by producing multilayer structures of isotopically pure carbon-12 (12C) and carbon-13 (13C), which confine electrons by a difference in band-gap energy. Secondary ion mass spectrometry (SIMS) measurements were employed to characterize the isotopic composition of the diamond superlattices. Layers between 2 nm and 350 nm in thickness can be designed and fabricated using a microwave plasma-assisted chemical vapor deposition technique.

Fabrication and Field Emission Properties of Carbon Nanotube Cathodes

1999 ◽  
Vol 593 ◽  
Author(s):  
C. Bower ◽  
O. Zhou ◽  
W. Zhu ◽  
A. G. Ramirez ◽  
G. P. Kochanski ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Carbon Nanotube ◽  
Vapor Deposition ◽  
Microwave Plasma ◽  
Spray Deposition ◽  
Chemical Vapor ◽  
Deposition Technique ◽  
Field Emission Properties ◽  
Large Current ◽  
Vapor Deposition Technique

ABSTRACTA variety of carbon nanotube films have been fabricated and tested as cold cathodes. A spray deposition technique was developed for processing as-grown bulk nanotubes, both single-walled and multi-walled, into films of randomly oriented nanotubes. Films of randomly oriented multi-walled nanotubes were grown using thermal chemical vapor deposition, and arrays of well-aligned multi-walled nanotubes have been fabricated using a microwave plasma enhanced chemical vapor deposition technique. The emission current-voltage (I-V) characteristics of these nanotube cathodes have been measured. Both multi-walled (random and aligned) and single-walled carbon nanotubes exhibit low turn-on fields (∼ 2 V/μm to generate 1 nA) and threshold fields (< 5 V/μm to generate 10 mA/cm2). Significantly, these cathodes were capable of operation at very large current densities (> 1A/cm2), making them candidates for application in a variety of vacuum microelectronic devices.

scholarly journals Growth of dense CNT on the multilayer graphene film by the microwave plasma enhanced chemical vapor deposition technique and their field emission properties

RSC Advances ◽  
2015 ◽  
Vol 5 (109) ◽  
pp. 90111-90120 ◽  
Author(s):  
Atul Bisht ◽  
S. Chockalingam ◽  
O. S. Panwar ◽  
A. K. Kesarwani ◽  
B. P. Singh ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Microwave Plasma ◽  
Graphene Film ◽  
Chemical Vapor ◽  
Multilayer Graphene ◽  
Deposition Technique ◽  
Chemical Vapor Deposition Technique ◽  
Field Emission Properties ◽  
Vapor Deposition Technique

Catalyst assisted carbon nanotubes (CNTs) were grown on multilayer graphene (MLG) on copper and silicon substrates by the microwave plasma enhanced chemical vapor deposition technique.

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