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Mihai L, Caruntu G, Rotaru A, Caruntu D, Mykhailovych V, Ciomaga CE, Horchidan N, Stancalie A, Marcu A. GHz-THz Dielectric Properties of Flexible Matrix-Embedded BTO Nanoparticles. MATERIALS (BASEL, SWITZERLAND) 2023; 16:1292. [PMID: 36770296 PMCID: PMC9921476 DOI: 10.3390/ma16031292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 01/13/2023] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
BaTiO3 (BTO) nanoparticles produced by wet chemistry methods were embedded in several types of flexible materials in order to fabricate flexible electronic devices. Starting from the produced nanoparticle dielectric properties, flexible material dielectric properties were tested for high electromagnetic frequencies (30 GHz-2 THz) using time domain spectroscopy. Dielectric performances of the different materials obtained with variable nanoparticle concentrations up to 40 wt.%, embedded in, gelatin, epoxy, and styrene-butadiene were compared at several working temperatures between 0 °C and 120 °C. Beside the general trend of ε' decrease with temperature and loses increase with the operating frequency, we were able to identify few matrix dependent optimal nanoparticle concentrations. The best composite performances were achieved by the BTO-SBS matrix, with filler concentration of 2 wt.%, where the losses have been of 1.5%, followed by BTO-gelatin matrix, with filler concentration of 40 wt.%, with higher losses percent of almost 10% for THz frequencies.
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Affiliation(s)
- Laura Mihai
- Center for Advanced Laser Technology, National Institute for Laser Plasma and Radiation Physics, 409 Atomistilor St., 077125 Magurele, Romania
| | - Gabriel Caruntu
- Department of Chemistry and Biochemistry, Central Michigan University, 1200 S. Franklin St., Mount Pleasant, MI 48859, USA
- Department of Electrical Engineering and Computer Science and MANSID Research Center, “Stefan Cel Mare” University, 13 Universitatii St., 720229 Suceava, Romania
| | - Aurelian Rotaru
- Department of Electrical Engineering and Computer Science and MANSID Research Center, “Stefan Cel Mare” University, 13 Universitatii St., 720229 Suceava, Romania
| | - Daniela Caruntu
- Department of Chemistry and Biochemistry, Central Michigan University, 1200 S. Franklin St., Mount Pleasant, MI 48859, USA
- Department of Electrical Engineering and Computer Science and MANSID Research Center, “Stefan Cel Mare” University, 13 Universitatii St., 720229 Suceava, Romania
| | - Vasyl Mykhailovych
- Department of Electrical Engineering and Computer Science and MANSID Research Center, “Stefan Cel Mare” University, 13 Universitatii St., 720229 Suceava, Romania
| | - Cristina Elena Ciomaga
- Department of Exact & Natural Sciences, Institute of Interdisciplinary Research, Al. I. Cuza University of Iasi, 11 Bld. Carol I, 700506 Iasi, Romania
| | - Nadejda Horchidan
- Faculty of Physics, Al. I. Cuza University of Iasi, 11 Bld. Carol I, 700506 Iasi, Romania
| | - Andrei Stancalie
- Center for Advanced Laser Technology, National Institute for Laser Plasma and Radiation Physics, 409 Atomistilor St., 077125 Magurele, Romania
| | - Aurelian Marcu
- Center for Advanced Laser Technology, National Institute for Laser Plasma and Radiation Physics, 409 Atomistilor St., 077125 Magurele, Romania
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