scholarly journals An interdigitated electrode with dense carbon nanotube forests on conductive supports for electrochemical biosensors

The Analyst ◽  
2018 ◽  
Vol 143 (15) ◽  
pp. 3635-3642 ◽  
Author(s):  
Hisashi Sugime ◽  
Takuya Ushiyama ◽  
Keita Nishimura ◽  
Yutaka Ohno ◽  
Suguru Noda
Keyword(s):  
Carbon Nanotube ◽  
Low Temperature ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Deposition Process ◽  
Electrochemical Biosensors ◽  
Interdigitated Electrode ◽  
Highly Sensitive ◽  
Vertically Aligned ◽  
Carbon Nanotube Forests

A highly sensitive interdigitated electrode (IDE) with vertically aligned dense carbon nanotube forests directly grown on conductive supports was demonstrated by combining UV lithography and a low temperature chemical vapor deposition process (470 °C).

Different Pathways for Synthesis of WO3 and Vertically Aligned Carbon Nanotube-Based Nanostructures

2021 ◽  
Vol 21 (4) ◽  
pp. 2388-2393
Author(s):  
Anna Szabó ◽  
Gábor Kovács ◽  
Anita Kovács ◽  
Klara Hernadi
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotube ◽  
Vapor Deposition ◽  
Synthesis Method ◽  
Chemical Vapor ◽  
X Ray Diffraction ◽  
X Ray ◽  
Vertically Aligned ◽  
Carbon Nanotube Forests ◽  
Scanning Electron

The synthesis and investigation of vertically aligned carbon nanotube (VACNT) based materials are gaining more-and-more interest among scientists due to their specific properties (e.g., electrical, optical, mechanical). Therefore, our interest for the present research has focused on synthesis of WO3/VACNT based nanostructures (using carbon nanotube forests obtained by catalytic chemical vapor deposition—CCVD method on aluminum substrate) using different synthesis pathways and WO3 precursors. The obtained composites were investigated by scanning electron microscopy (SEM), Raman spectroscopy, while the obtained crystal structures were characterized by X-ray diffraction (XRD). Results have shown that depending on the synthesis method, and using as template the carbonaceous structure, we can successfully obtain non-stochiometric tungsten oxide (W18O49) or WO3 composites.

Closed-loop control of a laser assisted carbon nanotube growth process for interconnects in flexible electronics

2011 ◽  
Vol 1365 ◽  
Author(s):  
Yoeri van de Burgt ◽  
Yves Bellouard ◽  
Rajesh Mandamparambil ◽  
Andreas Dietzel
Keyword(s):  
Carbon Nanotube ◽  
Flexible Electronics ◽  
Iron Catalyst ◽  
Chemical Vapor ◽  
Catalyst Layer ◽  
Deposition Process ◽  
Loop Control ◽  
Aluminum Oxide Layer ◽  
Carbon Nanotube Forests ◽  
Carbon Nanotube Growth

ABSTRACTA feedback control mechanism based on infrared radiation monitoring coupled with reflectivity information was developed to control the temperature of a laser assisted chemical vapor deposition process for the growth of carbon nanotube forests. An infrared laser operating at 808 nm is focused on a silicon substrate containing a 20 nm-aluminum-oxide layer and a 1.5 nm-iron catalyst layer. The growth takes place in an argon/ hydrogen/ ethylene gaseous environment. SEM and Raman spectroscopy analysis show that good controllability and reproducibility is achieved over multiple experiments.

Chemical vapor deposition of nickel-group metals on multiwall carbon nanotubes

2007 ◽  
Vol 85 (10) ◽  
pp. 645-650 ◽  
Author(s):  
Maoqi Feng ◽  
Richard J Puddephatt
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Carbon Nanotube ◽  
Low Temperature ◽  
Vapor Deposition ◽  
Multiwall Carbon Nanotubes ◽  
Chemical Vapor ◽  
Pt Films ◽  
Bimetallic Films ◽  
Multiwall Carbon

Chemical vapor deposition (CVD) of Ni, Pd, and Pt films and of Ni/Pd and Pd/Pt bimetallic films on multiwall carbon nanotubes (MWCNTs) can be effected at low temperature if the nanotubes are pretreated by CVD of titanium carbide. In the absence of the pretreatment, the CVD leads to formation of isolated nanoparticles of the nickel-group metals. The metallized MWCNTs are curved or kinked, as a result of the interaction with the metal. Preliminary oxidation of the carbon nanotubes allows easier metallization, and the bending of the metallated nanotubes is not observed in this case.Key words: Chemical vapor deposition, platinum, palladium, nickel, carbon, nanotube.

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