A NEWLY-DESIGNED NANO–FLUID BATIO3 ETHANOL SYSTEM FOR MODERN ELECTROMAGNETIC ABSORPTION APPLICATIONS

Abstract

Electrical shielding effectiveness (ESE) has become a popular research topic after EM waves have begun to be used in our everyday lives. Although the absorption and reflection of electromagnetic energy are those two basic methods used, the efficient techniques used in shielding are based on suppressing the reflection of EM waves and increasing the absorption of energy. This study has focused on BaTiO₃-ethanol nano–fluid as an absorber. Absorbing fluid/material was prepared by means of magnetic stirring, heating and ultrasonic bathing methods then the tubings that is going to behave as shielding screen (SS) were filled with this nano–fluid material. Transmission Line Method (TLM) was preferred to obtain reflection, transmission and absorption coefficients of ESE by means of S₁₁ and S₂₁. Fluid speed and its temperature have a potential to change the performance of ESE that it has been observed that increasing flow rate from 0 ml/min to 500 ml/min results in 12% increase in shielding effectiveness at low fluid temperature (30⁰C). In the second case which measurements repeated at high fluid temperature (60⁰C) it is seen that 1.05% increase in shielding effectiveness while flow rate increased from 0 ml/min to 500 ml/min.

Keywords

• Nano–fluid,nanotechnology,electromagnetic shielding,scattering parameters,dielectric material

References

1. Afsar MN, Sharma A, Obol M, (2009). “Microwave Permittivity and Permeability Properties and Microwave Reflections of Micro/Nano Ferrite Powders”. International Instrumentation and Measurement Technology Conference, 5-7 May 2009. Singapore, pp.1-5.
2. Alanagh-Movassagh M, Khiabani AB, Salimkhani H, (2017). “Improvement in magnetic and microwave absorption properties of nano-Fe3O4@CFs composites using a modified multi-step EPD process”. Applied Surface Science. 420, pp. 726-739
3. Baker J, Janezic M, Grosvenor J, Geyer R, (1993). “Transmission/Reflection and Short-Circuit Line Methods for Measuring Permittivity and Permeability”. US Department of Commerce 1355-R. pp.236.
4. Balanis CA, (2012). "Advanced Engineering Electromagnetics, Second Edition", Wiley, USA. pp.1018.
5. Cakır M, Kocakal NU, Ozen Ş, Kocakuşak A, Helhel S, (2017). “Investigation of Electromagnetic Shielding and Absorbing Capabilities of Cementitious Composites with Waste Metallic Chips”. Journal of Microwave Power and Electromagnetıc Energy. 51 (1), pp.1-17.
6. Chopkar M, Das PK, Manna I, (2006). "Synthesis and Characterization of Nanofluid for Advanced Heat Transfer Applications". Scripta Materialia. vol. 55, no. 6, pp.549-552.
7. Choudhary RNP, Patri SK. (2009). “Dielectric Materials: Introduction, Research and Applications”. Nova Science Publishers, ABD. pp.152.
8. Chrobak A, Kaleta A, Kwapuliński P, Kubisztal M, Haneczok, G, (2012). “Magnetic Shielding Effectiveness of Iron-Based Amorphous Alloys and Nanocrystalline Composites”. IEEE Transactions on magnetics. vol. 48, no. 4, pp.1515-1515.

9. Cimbala R, Kruželák L, Bucko S, Kurimský J, Kosterec M, (2016). “Influence of Electromagnetic Interference on Time-Domain Spectroscopy of Magnetic Nanofluids”. IEEE. 978-1-5090-0908-4/16, pp.1-4.
10. Dalke RA, Christopher LH, Paul M, Martin J, & Azar Sli. (2000). “Effects of reinforced concrete structures on RF communications”. IEEE Trans Electromagn Compat. 42, pp.486–496.
11. Ebrahimi S, Gavili A, Lajevardi M, Isfahani TD, Hadi I, Sabbaghzadeh J, (2010). "New Class of Coolants: Nanofluids". Cutting Edge Nanotechnology. vol. 12, pp.251-278.
12. Eswaraiah V, Sankaranarayanan V, Mishra AK, Ramaprabhu S, (2010). “Electromagnetic interference (EMI) shielding of carbon nanostrcutured films”. International Conference on Chemistry and Chemical Engineering. pp.150-152.
13. Helhel S, Kurnaz O, (2016). “Buried Metal Detection Within the Wooden Block By X-Band Measurements”. Microwave and optical technology letters. vol. 58, no. 5,1245-1253.
14. Karthik R, Cavallini A, Azcarraga, CG, (2014). “Investigations on The Effect of Nanoparticles in Mineral Oil”. Annual Report Conference on Electrical Insulation and Dielectric Phenomena. pp.695-698.
15. Kim., MS, Kim HK, Byun SW, Jeong SH, Hong YK, Joo JS, Song KT, Kim JK, Lee CF, Lee JY, (2002). “PET Fabric/Polypyrrole Composite with High Electrical Conductivity for EMI Shielding”. Synthectic Metals. 126, pp.233-239.
16. Kocakuşak A, Çolak B, Helhel S, (2017). “Frequency Dependent Complex Dielectric Permittivity of Rubber and Magnolia Leaves and Leaf Water Content Relation”. Journal of Microwave Power and Electromagnetic Energy. vol. 50, no. 4, pp.294–307.
17. Koo J, Kleinstreuer C, (2004). "A New Thermal Conductivity Model for Nanofluids" Journal of Nanoparticle Research. vol. 6, pp.577–588.
18. Kumar P, Dey D, Samantaray S, (2016). “A Recent Review on Thermo-Physical Properties of Nanofluid”. International Conference on Electrical, Electronics and Optimization Techniques. pp.3555-3560.
19. Lv Y, Wang W, Ma K, Zhang S, Zhou Y, Li C, Wang Q, (2013). “Nanoparticle Effect on Dielectric Breakdown Strength of Transformer Oil-Based Nanofluids”. Annual Report Conference on Electrical Insulation and Dielectric Phenomena. pp.680-682.
20. Mergos JA, Athanassopoulou MD, Argyropoulos TG, Dervos CT, (2012). “Dielectric Properties of Nanopowder Dispersions in Paraffin Oil”. IEEE. 1070-9878/12, pp.1502-1507.
21. Micheli D, Marchetti M, Pastore R, Vricella A, Gradoni G, Moglie F, Mariani Primiani V, (2015). “Shielding effectiveness of carbon nanotube reinforced concrete composites by reverberation chamber measurements”. IEEE, 978-1-4799-7806-9/15. pp.145-148.
22. Micheli D, Pastore R, Apollo C, Marchetti M, Gradoni G, Moglie F, Primiani VM, (2009). “Carbon Based Nanomaterial Composites in RAM and Microwave Shielding Applications”. IEEE Nano Organizers. 978-981-08-3694-8, pp.226-235.
23. Nayak L, Khastgir D, Chaki T, (2013). “A Mechanistic Study on Electromagnetic Shielding Effectiveness of Polysulfone/Carbon Nanofibers Nanocomposites”. J Mater Sci, 48, pp.1492-1502.
24. Pozar DM, (2012). "Microwave Engineering, Fourth Edition". Wiley, USA. pp.732.
25. Primo AV, Garcia B, Burgos JC, (2016). “Applicability of Nanodielectric Fluids to the Improvement of Transformer Insulation Properties”. IEEE. 978-1-5090-2804-7/16, pp.1-4.
26. Rafiq M, Khan D, Ali M, (2015). “Dielectric Properties of Transformer Oil based Silica Nanofluids”. IEEE. 978-1-4673-6813-1/15, pp.1-3.
27. Sadiku MNO, (2011). "Elements of Electromagnetics, Fifth Edition". Oxford, New York. pp.820.
28. Saini P, Choudhary V, Singh BP, Mathur RB, Dhawan SK, (2009). "Polyaniline–MWCNT Nanocomposites for Microwave Absorption and EMI Shielding" Materials Chemistry and Physics. vol. 113, pp.919-926.
29. Saini P, Choudhary V, Singh BP, Mathur RB, Dhawan SK, (2011). "Enhanced Microwave Absorption Behavior of Polyaniline-CNT/Polystyrene Blend in 12.4–18.0 GHz Range" Synthetic Metals. vol. 161, pp.1522-1526.
30. Sardarian P, Naffakh-Moosavy H, Afghahi SSS, (2017). “A newly-designed magnetic/dielectric [Fe3O4/BaTiO3@MWCNT] nanocomposite system for modern electromagnetic absorption Applications” Journal of Magnetism and Magnetic Materials. Vol. 441, pp.257-263.
31. Sens MA, Ueti E, Filho FA, Matt CFT, Polasek A, Furtado JGM, Da Silva LAF, Guedes VG, Lima WF, Garcia RWS, (2014). “Electromagnetic Characterization of Magnetic Nanofluid”. IEEE. 9 78-1-4799-2479-0/14, pp.184-185.
32. Soares BG, Touchaleaume F, Calheiros LF, Barra GMO, (2016). “Effect of Double Percolation on The Electrical Properties and Electromagnetic Interface Shielding Effectiveness of Carbon-Loaded Polystyrene/Ethylene Vinly Acetate Copolymer Blends”. Journal of Applied Polymer Science. 10.1002/app.43013, pp.1-10.
33. Tong H, Zhu G, Mao W, Zhu G, (2011). "Development of EMI Shielding Materials Characterized by Low Secondary Electromagnetic Radiation Pollution". IEEE 978-1-4244-9439-2/11. pp.2075-2077.
34. Vas VJ, Thomas MJ, (2015). “Electromagnetic Shielding Properties of Nano Carbon Filled Silicone Rubber Composites”. IEEE. 978-1-4799-6616-5/15, pp.1041-1046.
35. Yasir M, Savi P, Yahya MH, Giorcelli M, Tagliaferro A, (2014). “Wide Band Characterization Of MWCNTS Composites Based On Epoxy Resin”. IEEE, 978-1-4799-7391-0/14. pp.1-3.
36. Zhu YF, Ni QQ, Fu YQ (2015). “One-dimensional barium titanate coated multiwalled carbon nanotube heterostructures: synthesis and electromagnetic absorption properties”. Rsc Advances. Vol (5), pp. 3748–3756.