Blog
About

  • Record: found
  • Abstract: found
  • Article: found
Is Open Access

Synthesis and Characterizations of Novel Ca-Mg-Ti-Fe-Oxides Based Ceramic Nanocrystals and Flexible Film of Polydimethylsiloxane Composite with Improved Mechanical and Dielectric Properties for Sensors

Read this article at

Bookmark
      There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

      Abstract

      Armalcolite, a rare ceramic mineral and normally found in the lunar earth, was synthesized by solid-state step-sintering. The in situ phase-changed novel ceramic nanocrystals of Ca-Mg-Ti-Fe based oxide (CMTFO x), their chemical reactions and bonding with polydimethylsiloxane (PDMS) were determined by X-ray diffraction, infrared spectroscopy, and microscopy. Water absorption of all the CMTFO x was high. The lower dielectric loss tangent value (0.155 at 1 MHz) was obtained for the ceramic sintered at 1050 °C (S1050) and it became lowest for the S1050/PDMS nanocomposite (0.002 at 1 MHz) film, which was made by spin coating at 3000 rpm. The excellent flexibility (static modulus ≈ 0.27 MPa and elongation > 90%), viscoelastic property (tanδ = E″/E′: 0.225) and glass transition temperature (T g: −58.5 °C) were obtained for S1050/PDMS film. Parallel-plate capacitive and flexible resistive humidity sensors have been developed successfully. The best sensing performance of the present S1050 (3000%) and its flexible S1050/PDMS composite film (306%) based humidity sensors was found to be at 100 Hz, better than conventional materials.

      Related collections

      Most cited references 58

      • Record: found
      • Abstract: not found
      • Article: not found

      Humidity fixed points of binary saturated aqueous solutions

        Bookmark
        • Record: found
        • Abstract: not found
        • Article: not found

        Low dielectric constant materials for microelectronics

          Bookmark
          • Record: found
          • Abstract: not found
          • Article: not found

          Spectral and other physicochemical properties of submicron powders of hematite (α-Fe2O3), maghemite (γ-Fe2O3), magnetite (Fe3O4), goethite (α-FeOOH), and lepidocrocite (γ-FeOOH)

            Bookmark

            Author and article information

            Affiliations
            [1 ]Centre for Applied Biomechanics, Department of Biomedical Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia; ayanbabu@ 123456gmail.com (A.M.); hanie_nadia@ 123456um.edu.my (H.N.S.)
            [2 ]Department of Paediatric Dentistry & Orthodontics, Faculty of Dentistry, University of Malaya, Kuala Lumpur 50603, Malaysia; nabilafarhana.shah@ 123456gmail.com (N.F.A.S.); zamrir@ 123456um.edu.my (Z.R.)
            Author notes
            [* ]Correspondence: ashisbidyarthi@ 123456gmail.com (A.T.); prsumit@ 123456gmail.com or prsumit@ 123456um.edu.my (S.P.); azuan@ 123456um.edu.my (N.A.A.O.); Tel.: +603-7967-5200 (A.T. & S.P. & N.A.A.O.); Fax: +603-7956-1378 (A.T. & S.P. & N.A.A.O.)
            Contributors
            Role: Academic Editor
            Journal
            Sensors (Basel)
            Sensors (Basel)
            sensors
            Sensors (Basel, Switzerland)
            MDPI
            1424-8220
            27 February 2016
            March 2016
            : 16
            : 3
            26927116 4813867 10.3390/s16030292 sensors-16-00292
            © 2016 by the authors; licensee MDPI, Basel, Switzerland.

            This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license ( http://creativecommons.org/licenses/by/4.0/).

            Categories
            Article

            Comments

            Comment on this article