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Related Experiment Video

Updated: May 26, 2026

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy
10:40

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

Published on: April 8, 2018

Nanoporous piezo- and ferroelectric thin films.

Paula Ferreira1, Ru Z Hou, Aiying Wu

  • 1Departamento de Engenharia Cerâmica e do Vidro, CICECO, Universidade de Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal. pcferreira@ua.pt

Langmuir : the ACS Journal of Surfaces and Colloids
|December 31, 2011
PubMed
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Researchers developed nanoporous barium titanate and lead titanate thin films using a sol-gel method. These materials exhibit piezoelectric and ferroelectric properties, showing potential for advanced multifunctional systems.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Solid State Physics

Background:

  • Barium titanate and lead titanate are key perovskite materials with significant ferroelectric and piezoelectric properties.
  • Developing thin films with controlled nanoporosity is crucial for advanced device applications.
  • Sol-gel methods offer versatile routes for synthesizing complex oxide materials.

Purpose of the Study:

  • To synthesize nanoporous barium titanate and lead titanate thin films using a novel self-assembly approach.
  • To characterize the structural, morphological, and crystalline properties of the resulting films.
  • To investigate the local ferroelectric and piezoelectric behavior of the nanoporous perovskite films.

Main Methods:

  • Sol-gel processing modified with a block-copolymer.

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Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain
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Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain

Published on: March 27, 2018

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Last Updated: May 26, 2026

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy
10:40

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

Published on: April 8, 2018

Epitaxial Nanostructured &alpha;-Quartz Films on Silicon: From the Material to New Devices
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Epitaxial Nanostructured α-Quartz Films on Silicon: From the Material to New Devices

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Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain
08:00

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain

Published on: March 27, 2018

  • Evaporation-induced self-assembly (EISA) methodology.
  • Thermal treatment with in situ ellipsometry for organic component decomposition and structure formation.
  • Material characterization using X-ray diffraction (XRD), High-Resolution Transmission Electron Microscopy (HRTEM), Scanning Electron Microscopy (SEM), and ellipsoporosimetry.
  • Piezoresponse Force Microscopy (PFM) for local property measurements.

    • Main Results:

    • Successfully prepared nanoporous barium titanate and lead titanate thin films (approx. 100 nm thickness).
    • Achieved porous tetragonal crystalline perovskite structures through controlled thermal treatment and self-assembly.
    • Demonstrated local piezoelectric and ferroelectric behavior in both types of nanoporous films.
    • Ellipsoporosimetry confirmed the porous nature and provided structural insights.

    Conclusions:

    • The combination of sol-gel, block-copolymer templating, and EISA is effective for creating nanoporous perovskite thin films.
    • The synthesized films exhibit promising local ferroelectric and piezoelectric functionalities.
    • These nanoporous materials serve as a strong platform for developing next-generation multifunctional electronic and photonic systems.