Piezoelectric transducers on curved dispersive bending wave and poke-charged touch screens

Hamidreza Hoshyarmanesh, Naser Nehzat, Mehdi Salehi, Mojtaba Ghodsi, Hong Sub Lee, Hyung Ho Park

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Ferroelectric thin films of lead zirconate titanate Pb(Zr 0.52,Ti0.48)O3(PZT) and bismuth titanate Bi4Ti3O12(BiT) were prepared by photochemical metal-organic deposition as electromechanical transducers used in optoelectronic devices. Both solutions were deposited on flat and convex amorphous glass substrates to poke-charge the device or detect the touch point coordinate on new generation of free-shaped screens. The effects of optimization on UV exposure, precursor type and annealing temperature (600-800 °C) were investigated on microstructural, optical and ferroelectric properties of deposited thin films. Suppressing the non-uniformity of the film thicknesses due to repetitive deposition, actually there is no structural difference between the two types of substrates and their effects on the film properties. Polarization-voltage hysteresis loops showed relatively larger remnant polarization of Pr = 9.3 μC/cm2 and 6.1 μC/cm2 for optimized UV-irradiated PZT and BiT thin films, respectively, than uncured samples.

Original languageEnglish
Pages (from-to)870-876
Number of pages7
JournalMaterials and Manufacturing Processes
Volume29
Issue number7
DOIs
Publication statusPublished - 2014 Jul 3

Fingerprint

Touch screens
Piezoelectric transducers
Polarization
Thin films
Ferroelectric thin films
Substrates
Hysteresis loops
Bismuth
Optoelectronic devices
Ferroelectric materials
Film thickness
Transducers
Metals
Annealing
Glass
Electric potential
Temperature
lead titanate zirconate
bismuth titanate

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

Cite this

Hoshyarmanesh, Hamidreza ; Nehzat, Naser ; Salehi, Mehdi ; Ghodsi, Mojtaba ; Lee, Hong Sub ; Park, Hyung Ho. / Piezoelectric transducers on curved dispersive bending wave and poke-charged touch screens. In: Materials and Manufacturing Processes. 2014 ; Vol. 29, No. 7. pp. 870-876.
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Piezoelectric transducers on curved dispersive bending wave and poke-charged touch screens. / Hoshyarmanesh, Hamidreza; Nehzat, Naser; Salehi, Mehdi; Ghodsi, Mojtaba; Lee, Hong Sub; Park, Hyung Ho.

In: Materials and Manufacturing Processes, Vol. 29, No. 7, 03.07.2014, p. 870-876.

Research output: Contribution to journalArticle

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