Development of Pyramidal Microwave Absorber Using Sugar Cane Bagasse (Scb)

Zahid, Liyana; Malek, Mohd Fareq Abdul; Nornikman, H.; Affendi, Nur Adyani Mohd; Ali, Md. Asraf; Hussin, Nuriziani; Ahmad, B. H.; Aziz, Mohamad Zoinol Abidin Abdul

doi:10.2528/pier13012602

Cited by 31 publications

(23 citation statements)

References 36 publications

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“…The dielectric properties of both RH and RH-CNTs materials were measured over the frequency range of 8.2-12.4 GHz using a commercial dielectric probe with an Agilent E8362B P-series Network Analyzer (PNA) [10]. The dielectric properties result of the samples were generated by using the commercialize Agilent Technologies 85070E software.…”

Section: Materials Measurementmentioning

confidence: 99%

Investigation of Rice Husk/CNTs Composites Performance in Microwave Properties

Lee

Malek

Cheng

et al. 2015

Theory and Applications of Applied Electromagnetics

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This paper is to study the performance of rice husk and carbon-nanotubes nanotubes (RH-CNTs) composite material as a microwave absorber. The rice husk (RH) is a lossy material that contains dielectric properties which suitable used as microwave absorber. The dielectric properties are playing a main role in microwave absorption of any material. The dielectric properties of materials were measured using an Agilent dielectric probe. The microwave absorption performance of rice husk and CNTs composites was investigated by using rectangular waveguide transmission line in simulation. The microwave absorbers were designed and simulated using the Computer Simulation Technology Microwave studio software (CST-MWS). The ability of microwave absorption between rice husk and RH-CNTs was compared in

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Section: Materials Measurementmentioning

confidence: 99%

Investigation of Rice Husk/CNTs Composites Performance in Microwave Properties

Lee

Malek

Cheng

et al. 2015

Theory and Applications of Applied Electromagnetics

Self Cite

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“…In order to investigate the surface morphology of CSP and SCAC materials in term of porosity, sample was investigated by using TM3000 Scanning Electron Microscope. For SEM measurements, the samples were prepared by coated with a thin layer of platinum [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20].…”

Section: Materials Characterisationmentioning

confidence: 99%

“…At present, coconut wastes are used in horticultural and agricultural applications [7]. Carbon is the main element to absorb unwanted electromagnetic signals [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

The Potential of Coconut Shell Powder (Csp) and Coconut Shell Activated Carbon (Csac) Composites as Electromagnetic Interference (Emi) Absorbing Material

Jabal¹,

Yew²,

Hoon³

2016

MJAS

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Agriculture waste is potentially useful as an alternative material to absorb and attenuate electromagnetic interference (EMI). This research highlights the use of coconut shell powder (CSP) and coconut shell activated carbon (CSAC) as raw materials with epoxy resin and amine hardener composite to absorb microwave signals over frequency of 1 -8 GHz. In order to investigate the suitability of these raw materials as EMI absorbing material, carbon composition of the raw materials is determined through CHNS Elemental Analysis. The surface morphology of the raw materials in term of porosity is investigated by using TM3000 Scanning Electron Microscope (SEM). The complex permittivity of the composites is determined by using high temperature dielectric probe in conjunction with Network Analyzer. From the result, the Carbon% of CSP and CSAC is 46.70% and 84.28% respectively. In term of surface morphology, the surface porosity of CSP and CSAC is in the range of 2 µm and 1µm respectively. For the dielectric properties, the dielectric constant and the dielectric loss factor for CSP and CSAC is 4.5767 and 64.8307and 1.2144 and 13.8296 respectively. The materials more potentially useful as substitute materials for electromagnetic interference (EMI) absorbing are discussed. Keywords: agricultural wastes, dielectric properties, carbon composition AbstrakSisa pertanian mempunyai potensi untuk digunakan sebagai bahan alternatif untuk menyerap atau melemahkan gangguan elektromagnatik (EMI). Kajian ini menekankan kepada penggunaan serbuk tempurung kelapa (CSP) dan karbon teraktif tempurung kelapa(CSAC) sebagai bahan mentah dengan campuran resin epoksi dan komposit penguat amina untuk menyerap gelombang mikro dalam frekuensi 1 -8 GHz. Bagi mengkaji kesesuaian bahan mentah sebagai bahan penyerap gelombang mikro, komposisi karbon dalam bahan mentah ditentukan mengunakan analisis unser CHNS. Liang permukaan bahan mentah pula dikaji mengunakan mikroskop pengimbas elektron TM3000 (SEM). Ketelusan kompleks bagi bahan campuran diukur menggunakan prob dielektrik suhu tinggi dan alat analisis rangkaian. Daripada keputusan yang diperolehi, peratusan karbon dalam CSP dan CSAC adalah sebanyak 46.70 % dan 84.28 %. Manakala dari segi liang permukaan pula, keliangan CSP dan CSAC masing -masing berada dalam lingkungan 2um dan 1um.Bagi sifat dielektrik, pemalar dielektrik untuk CSP dan CSAC masing -masing adalah 4.5767 dan 64.8307. Bagi pembelauan dielektrik, nilai untuk CSP dan CSAC masing -masing adalah 1.2144 dan 13.8296. Isu bahan yang lebih berpotensi untuk digunakan sebagai bahan penyerap gangguan elektromagnatik (EMI) dibincangkan.

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“…In developing microwave applications, identifying a suitable material to meet the requirements is important. Many studies have been focused on the suitability of agricultural waste materials for such applications (Zahid et al 2013), and whether they are fully biodegradable, environmentally friendly, abundantly available, renewable, cheap, and of low density (Yaacoba et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Determining the Complex Permittivity of Oil Palm Empty Fruit Bunch Fibre Material by Open-ended Coaxial Probe Technique for Microwave Applications

Abdalhadi¹,

Abbas²,

Ahmad³

et al. 2017

BioResources

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A material description was established for oil palm empty fruit bunch (OPEFB) fibre waste for microwave absorber applications by determining its dielectric properties with respect to fibre size and frequency. The proposed OPEFB material was studied at frequencies from 1 to 4 GHz. The study was conducted using the open-ended coaxial probe (OECP) HP85071C technique. The effect of microwave frequency on complex permittivity properties for powdered OPEFB and compressed OPEFB with different particle sizes (100, 200, 300, 400, and 500 μm) were investigated. Results showed that the microwave frequency and particle size significantly influenced the complex permittivity (real and imaginary) properties of the samples. Moreover, the complex permittivity decreased as the powder fibre size increased. The complex permittivity of the smallest and largest powder fibre sizes (100 and 500 μm) were (2.050 − j 0.197) and (1.934 − j 0.137), respectively; and the complex permittivity of the smallest and largest compressed OPEFB fibre sizes (100 and 500 μm) were (3.799 − j0.603) and (3.326 − j0.486), respectively. The compressed OPEFB complex permittivity was higher than that of the OPEFB powder.

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Development of Pyramidal Microwave Absorber Using Sugar Cane Bagasse (Scb)

Cited by 31 publications

References 36 publications

Investigation of Rice Husk/CNTs Composites Performance in Microwave Properties

Investigation of Rice Husk/CNTs Composites Performance in Microwave Properties

The Potential of Coconut Shell Powder (Csp) and Coconut Shell Activated Carbon (Csac) Composites as Electromagnetic Interference (Emi) Absorbing Material

Determining the Complex Permittivity of Oil Palm Empty Fruit Bunch Fibre Material by Open-ended Coaxial Probe Technique for Microwave Applications

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