Highly ordered large-area colloid templates for nanostructured TiO 2 thin film gas sensors

Hi Gyu Moon, Young Seok Shim, Do Hong Kim, Ho Won Jang, Seung Hee Han, Hyung-Ho Park, Soek Jin Yoon

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We report a novel process that uses highly ordered colloidal templating to fabricate nanostructured TiO 2 thin film gas sensors. An O 2 plasma treatment is used to decrease the contact angle of a water droplet on a SiO 2/Si substrate from 46° to 3°C. The formation of this hydrophilic surface enhances the adhesion of polystyrene microspheres to the substrate during the spin coating of the colloidal solution, leading to a large-area colloid template of closely packed monolayer microspheres on the substrates. Embossed TiO 2 thin film gas sensors fabricated through highly ordered colloidal templating using O 2 plasma exhibit substantially enhanced gas sensing performance as compared to those without surface treatments prior to colloidal templating.

Original languageEnglish
Pages (from-to)3496-3500
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Volume12
Issue number4
DOIs
Publication statusPublished - 2012 Jul 6

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Colloids
Gases
Microspheres
Polystyrenes
Water

All Science Journal Classification (ASJC) codes

  • Medicine(all)

Cite this

Moon, Hi Gyu ; Shim, Young Seok ; Kim, Do Hong ; Jang, Ho Won ; Han, Seung Hee ; Park, Hyung-Ho ; Yoon, Soek Jin. / Highly ordered large-area colloid templates for nanostructured TiO 2 thin film gas sensors. In: Journal of Nanoscience and Nanotechnology. 2012 ; Vol. 12, No. 4. pp. 3496-3500.
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Highly ordered large-area colloid templates for nanostructured TiO 2 thin film gas sensors. / Moon, Hi Gyu; Shim, Young Seok; Kim, Do Hong; Jang, Ho Won; Han, Seung Hee; Park, Hyung-Ho; Yoon, Soek Jin.

In: Journal of Nanoscience and Nanotechnology, Vol. 12, No. 4, 06.07.2012, p. 3496-3500.

Research output: Contribution to journalArticle

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