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7 Metastructure-based metal 3D printing for innovative application

  • Minhaz Husain , Rupinder Singh , Arvind Kumar and J. Paulo Davim
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3D Printing
This chapter is in the book 3D Printing

Abstract

In the past decade, some studies have been reported on the metastructurebased 3D printing of functional/nonfunctional prototypes. Also, several studies have stated the fabrication of microstrip patch antenna-based sensors using 3D printing. But hitherto little has been reported on the use of metastructure-based design of patches for conformal sensors in biomedical applications. This study highlights the investigation performed on different metastructures and the effect of these metastructures on resonance frequency (Rf) and specific absorption rate (SAR) value of biosensors. The patch and ground plane were printed by direct metal laser sintering (DMLS) process using two different metastructures (octet truss and dodecahedron) for enhancing conformability. The result of this study suggests that the fabrication of a patch with an octet truss metastructure has a better SAR value of 1.576 W/kg (without muscle, skin, and fat) and 1.40 W/kg (with muscle, skin, and fat). The Rf and reflection coefficient (S11) without muscle, skin, and fat were observed as 4.02 GHz and −16.25 dB, and with muscle, skin, and fat was observed as 3.84 GHz and −31.46 dB, respectively for biosensor.

Abstract

In the past decade, some studies have been reported on the metastructurebased 3D printing of functional/nonfunctional prototypes. Also, several studies have stated the fabrication of microstrip patch antenna-based sensors using 3D printing. But hitherto little has been reported on the use of metastructure-based design of patches for conformal sensors in biomedical applications. This study highlights the investigation performed on different metastructures and the effect of these metastructures on resonance frequency (Rf) and specific absorption rate (SAR) value of biosensors. The patch and ground plane were printed by direct metal laser sintering (DMLS) process using two different metastructures (octet truss and dodecahedron) for enhancing conformability. The result of this study suggests that the fabrication of a patch with an octet truss metastructure has a better SAR value of 1.576 W/kg (without muscle, skin, and fat) and 1.40 W/kg (with muscle, skin, and fat). The Rf and reflection coefficient (S11) without muscle, skin, and fat were observed as 4.02 GHz and −16.25 dB, and with muscle, skin, and fat was observed as 3.84 GHz and −31.46 dB, respectively for biosensor.

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