Multi-walled carbon nanotube/ribonucleic acid hybrid field emitters fabricated by spray deposition

Yang Doo Lee, Jung Wan Yu, Woo Sung Cho, Yong Churl Kim, In Taek Han, Yun Hi Lee, Byeong Kwon Ju

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Multi-walled carbon nanotubes (MWCNTs) are shown to disperse in water, and be functionalized using RNA so that MWCNT/RNA hybrids can be fabricated on substrates by spray method. The material has strong adhesion on glass substrates or metal wires. A liquid elastomer surface treatment is used to make the field emitter tips protrude from the cathode. Possible methods of realizing field emitter sources, including X-ray sources, are discussed. The MWCNT/RNA hybrids have a higher emission current density and more uniform emission image than the MWCNTs on their own, since the RNA coated MWCNTs attach more strongly to the substrate. A diode configuration field emission X-ray source using the MWCNT/RNA hybrids on tungsten wire tip was tested and found to provide clear X-ray images.

Original languageEnglish
Pages (from-to)1131-1136
Number of pages6
JournalCarbon
Volume48
Issue number4
DOIs
Publication statusPublished - 2010 Apr

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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