Maskless functionalization of a carbon nanotube dot array biosensor using an ultrafine atmospheric pressure plasma jet

Tomy Abuzairi, Mitsuru Okada, Yohei Mochizuki, Nji Raden Poespawati, Retno Wigajatri Purnamaningsih, Masaaki Nagatsu

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

To realize maskless functionalization of a carbon nanotubes (CNTs) dot array, a localized surface functionalization technology using an ultrafine atmospheric pressure plasma jet was developed. The plasma surface functionalization onto vertically aligned CNTs was carried out in two stages: pretreatment for activation of the CNT surface and posttreatment for surface functionalization. The experimental results of chemical derivatization with the fluorescent dye show that the CNT dot array was not only successfully functionalized with amino (-NH2) and carboxyl (-COOH) groups but also functionalized without any interference between functional groups. The success of maskless functionalization in the line pattern provides a means of a multifunctionalized CNT dot array with direct implications for future application of a microarray biosensor.

Original languageEnglish
Pages (from-to)208-216
Number of pages9
JournalCarbon
Volume89
DOIs
Publication statusPublished - 1 Aug 2015

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