BROWSE

Related Researcher

Author

Baik, Jeong Min
Nano Energy and Environmental Materials Lab
Research Interests
  • Nanogenerators, antimicrobial material, catalysis, smart sensors

ITEM VIEW & DOWNLOAD

A near single crystalline TiO2 nanohelix array: enhanced gas sensing performance and its application as a monolithically integrated electronic nose

Cited 9 times inthomson ciCited 8 times inthomson ci
Title
A near single crystalline TiO2 nanohelix array: enhanced gas sensing performance and its application as a monolithically integrated electronic nose
Author
Hwang, SunyongKwon, HyunahChhajed, SameerByon, Ji WonBaik, Jeong MinIm, JiseongOh, Sang HoJang, Ho WonYoon, Seok JinKim, Jong Kyu
Keywords
GLANCING ANGLE DEPOSITION; THIN-FILMS; REFRACTIVE-INDEX; OXIDE-NANOWIRE; SENSORS; NANOSTRUCTURES; SENSITIVITY; FABRICATION; HYDROGEN; DIOXIDE
Issue Date
201301
Publisher
ROYAL SOC CHEMISTRY
Citation
ANALYST, v.138, no.2, pp.443 - 450
Abstract
We present high performance gas sensors based on an array of near single crystalline TiO2 nanohelices fabricated by rotating oblique angle deposition (OAD). The combination of large surface-to-volume ratio, extremely small size (<30 nm) comparable to the Debye length, a near single crystallinity of TiO2 nanohelices, together with the unique top-and-bottom electrode configuration hugely improves the H-2-sensing performance, including similar to 10 times higher response at 50 ppm, approximately a factor of 5 lower detection limit, and much faster response time than the conventional TiO2 thin film devices. Beyond such remarkable performance enhancement, the excellent compatibility of the OAD method compared with the conventional micro-fabrication technology opens a new avenue for monolithic integration of high-performance chemoresistive sensors to fabricate a simple, low cost, reliable, yet fully functional electronic nose and multi-functional smart chips for in situ environmental monitoring.
URI
Go to Link
DOI
http://dx.doi.org/10.1039/c2an35932d
ISSN
0003-2654
Appears in Collections:
MSE_Journal Papers

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qr_code

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU