A carbon nanotube film as a radio frequency filter

Prokudina, N. A.; Shishchenko, E. R.; Joo, Oh‐Shim; Hyung, Kyung-Hee; Han, Sung‐Hwan

doi:10.1016/j.carbon.2005.02.012

Cited by 22 publications

(6 citation statements)

References 18 publications

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“…A CNT based structure called "buckypaper", which is a paper-like sheet of randomly oriented CNTs (where van der Waals interactions at the tube-tube intersections creates a freestanding film with properties similar to those of the constituting CNTs) and its composites have become a hot topic in CNT research and have been widely reported in recent years [25][26][27][28][29][30][31][32][33][34][35][36]. The intrinsic properties of buckypapers make them very useful for a broad range of applications: radio frequency filters [37], cold-field cathode emitters [38], etc. The flexibility and structural integrity of buckypaper has been also used for the production of artificial muscles [39] or of filtration devices exploiting the assembly of pores among the tubes [40].…”

Section: Introductionmentioning

confidence: 99%

Field emission properties of as-grown multiwalled carbon nanotube films

Giubileo

Bartolomeo

Sarno

et al. 2012

Carbon

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Multiwalled carbon nanotubes have been produced by ethylene catalytic chemical vapor deposition and used to fabricate thick and dense freestanding films ("buckypapers") by membrane filtering. Field emission properties of buckypapers have been locally studied by means of high vacuum atomic force microscopy with a standard metallic cantilever used as anode to collect electrons emitted from the sample. Buckypapers showed an interesting linear dependence in the Fowler-Nordheim plots demonstrating their suitability as emitters. By precisely tuning the tip-sample distance in the submicron region we found out that the field enhancement factor is not affected by distance variations up to 2um. Finally, the study of current stability showed that the field emission current with intensity of about 3,3*10-5A remains remarkably stable (within 5% fluctuations) for several hours.Comment: 18 pages, 5 figure

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Section: Introductionmentioning

confidence: 99%

Field emission properties of as-grown multiwalled carbon nanotube films

Giubileo

Bartolomeo

Sarno

et al. 2012

Carbon

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“…BPs are often flexible materials; however, they also exhibit a significant degree of chemical and physical stability [ 6 , 56 ]. Due to their intrinsic thermal, electronic, and mechanical properties, BPs have been proposed for various applications including nanoactuators, sensors, radio frequency filters, artificial muscles, and cold-field emission cathodes [ 6 , 57 , 58 , 59 , 60 ]. They are typically synthesized from dispersions of CNTs, which are obtained by applying ultrasonic energy to samples containing nanotubes and a suitable dispersant.…”

Section: Buckypaper Membranesmentioning

confidence: 99%

Carbon Nanotube Membranes: Synthesis, Properties, and Future Filtration Applications

2017

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Over the course of the past decade, there has been growing interest in the development of different types of membranes composed of carbon nanotubes (CNTs), including buckypapers and composite materials, for an ever-widening range of filtration applications. This article provides an overview of how different types of CNT membranes are prepared and the results obtained from investigations into their suitability for different applications. The latter involve the removal of small particles from air samples, the filtration of aqueous solutions containing organic compounds and/or bacteria, and the separation of individual liquids present in mixtures. A growing number of reports have demonstrated that the incorporation of CNTs into composite membranes confers an improved resistance to fouling caused by biomacromolecules and bacteria. These results are discussed, along with evidence that demonstrates it is possible to further reduce fouling by taking advantage of the inherent conductivity of composite membranes containing CNTs, as well as by using different types of electrochemical stimuli.

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“…MWCNT films exhibit a thermal transport coefficient of 15 W•mK -1 [8], however, by magnetic alignment it was possible to increase this value up to 42 W•mK -1 [9]. Carbon nanotube films have several interesting applications radiofreqency filters [10], artificial muscles [11], cold field emission cathodes [12], mechanical sensors [13], semiconducting layers in different types of electronic, optoelectronic, and sensor systems [14] or as starting materials for SiC nanorod synthesis [15].…”

Section: Introductionmentioning

confidence: 99%