Determination of complex permittivity of surfactant treated powders using an open-ended coaxial cavity resonator

Tuhkala, Marko; Juuti, Jari; Jantunen, Heli

doi:10.1016/j.powtec.2014.02.016

Cited by 9 publications

(7 citation statements)

References 22 publications

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“…2). These equations had previously been found to have good correlation in the characterization of dielectric properties of particles reported by Tuhkala et al, Conger et al and Nelson et al [12,13,[15][16][17][18].…”

Section: Methodsmentioning

confidence: 74%

The effect of BaTiO 3 particle shape on complex permittivity of 0.98MgTiO 3 –0.02BaTiO 3 composite powders at GHz frequencies

Tuhkala

Maček

Siponkoski

et al. 2016

Materials Research Bulletin

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The effect of BaTiO3 particle shape on the properties of 0.98MgTiO3 − 0.02BaTiO3 composite powders was characterized and analyzed using an indirectly coupled open-ended coaxial cavity resonator at gigahertz frequencies. Elongated micrometre sized BaTiO3 particles were found to have a significantly stronger effect on permittivity when compared to composite powders having micro and nano sized spherical BaTiO3 particles. Inclusion permittivities and dielectric loss tangents of composite powders increased from that of pure MgTiO3 powder, 13.3 and 4.6 × 10-3 , up to 15.7 and 1.7 × 10-2 with needle shaped BaTiO3 particles, respectively. The presented results give valuable information for tailoring the properties of dielectrics which can be utilized in the vast field of electronic component manufacturing.

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Section: Methodsmentioning

confidence: 74%

The effect of BaTiO 3 particle shape on complex permittivity of 0.98MgTiO 3 –0.02BaTiO 3 composite powders at GHz frequencies

Tuhkala

Maček

Siponkoski

et al. 2016

Materials Research Bulletin

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“…Parameter input yang digunakan untuk mendefinisikan properti berbagai bahan yang diperlukan untuk simulasi diperoleh melalui literatur (Tabel 1). Sumber: a dari referensi [22], b dari referensi [23], c dari referensi [24], d dari referensi [25], e dari referensi [26], f dari referensi [27], g dari penelitian ini.…”

Section: Metode Penelitianunclassified

“…Node dan anti node menghasilkan distribusi medan listrik, kerugian daya dalam bahan, dan kerugian volumetrik yang tidak merata dalam kaviti dan menghasilkan cold spot dan hot spot pada bahan [24,30]. Lokasi zona medan microwave distribusi tinggi dan rendah yang dibuat oleh beberapa pola gelombang berdiri yang ditumpangkan dalam kaviti bergantung pada dimensi rongga, port microwave, spektrum frekuensi, dan geometri, dimensi, sifat dielektrik, dan lokasi bahan [24][25][26][27][28][29][30].…”

Section: Metode Penelitianunclassified

“…Distribusi panas dalam bahan maupun kaviti dipengaruhi karakteristik internal permitivitas dan sifat termal bahan, oleh posisi dari pusat bahan dan lama waktu pemanasan. Pada pemanasan secara transien oleic acid dan stearic acid hubungan konversi energi microwave menjadi panas dalam ruang dan waktu dengan asumsi tidak ada aliran masa dalam proses pemanasan dapat dijelaskan menggunakan persamaan transfer panas [26,38]. Persamaan ini menegaskan bahwa konduktivitas berperan penting memindahkan panas ke area pemanasan non volumetrik bahan.…”

Section: Distribusi Energi Hasil Model Pemanasan Microwaveunclassified

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Simulation of Microwave Effects on Heating Some Bio-Oil Basic Components

Trimawiasa

Sudiana

Aba

2021

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An investigation of the microwave effect has been carried out by simulating heating the basic components of bio oil. This research aims to produce a heating model and energy distribution of oleic acid and stearic acid component materials. The cylindrical material is placed in a cavity-shaped heating applicator using a microwave excitation frequency of 2.45 GHz through a single waveguide TE10 mode. Numerical solution using time-domain solver and transient solver succeeded in simulating the heating model of the dielectric material with the results of the energy distribution depending on the complex permittivity of the material.

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“…There have been many efforts and progress to improve measurement sensitivity and accuracy through different methods. These include transmission line [10], free space [11], and cavity techniques [12]. Nevertheless, parasitic effects [7][8][9] usually have a negative impact on the sensitivity of detection.…”

Section: Introductionmentioning

confidence: 99%

A Novel Technology for Measurements of Dielectric Properties of Extremely Small Volumes of Liquids

Liu

2016

International Journal of Antennas and Propagation

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A high sensitivity sensor for measurement radio frequency (RF) dielectric permittivity of liquids is described. Interference is used and parasitic effects are cancellation, which makes the sensor can catch weak signals caused by liquids with extremely small volumes. In addition, we present the relationship between transmission coefficient and permittivity of liquids under test (LUT). Using this sensor, quantitative measurements of the dielectric properties at 5.8 GHz are demonstrated of LUTs. Experiments show that the proposed method only requires the volume of 160 nanoliters for liquids. Therefore, the technology can be used for RF spectroscopic analysis of biological samples and extremely precious liquids.

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Determination of complex permittivity of surfactant treated powders using an open-ended coaxial cavity resonator

Cited by 9 publications

References 22 publications

The effect of BaTiO 3 particle shape on complex permittivity of 0.98MgTiO 3 –0.02BaTiO 3 composite powders at GHz frequencies

The effect of BaTiO 3 particle shape on complex permittivity of 0.98MgTiO 3 –0.02BaTiO 3 composite powders at GHz frequencies

Simulation of Microwave Effects on Heating Some Bio-Oil Basic Components

A Novel Technology for Measurements of Dielectric Properties of Extremely Small Volumes of Liquids

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