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<p>In the past significant studies were reported on the use of thermoplastic resin paraloid B-72 (PB-72) for heritage conservation applications. But hitherto little has been reported on the use of PB-72 as a sensor for online health monitoring of heritage documents along with preservation action. In this study, PB-72 sensing capabilities were ascertained for the preservation of heritage documents based on resonance frequency (R<sub>f</sub>) in line with the concept of micro-strip patch antenna (MPA). To ascertain the dielectric constant (𝜺<sub>r</sub>) of PB-72, 03 different substrates (assuming 𝜺<sub>r</sub> = 4, 5, 6) were 3D-printed based on simulated results as per high-frequency structure simulator (HFSS) software and their sensing capability were explored. A ring-resonator (RR) test was performed on these substrates and their R<sub>f</sub> characteristics were noticed using a Vector network analyzer (VNA). The sensing results in terms of its reflection coefficient (S<sub>11</sub>), reverse transmission (S<sub>21</sub>), and specific absorption ratio (SAR) were noticed and the substrate corresponding to 𝜺<sub>r</sub> = 4 was found selected in the range of industrial scientific and medical (ISM) band.</p>

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On 3D Printing of Paraloid B72-Based Sensors for the Health Monitoring of Heritage Documents

  • 期刊论文

  • 发表日期：

    2025年8月2日

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  • Ankush Mehta,
  • Rupinder Singh,
  • Amrinder Pal Singh,
  • Jagdeep Singh,
  • Ranvijay Kumar

摘要

In the past significant studies were reported on the use of thermoplastic resin paraloid B-72 (PB-72) for heritage conservation applications. But hitherto little has been reported on the use of PB-72 as a sensor for online health monitoring of heritage documents along with preservation action. In this study, PB-72 sensing capabilities were ascertained for the preservation of heritage documents based on resonance frequency (Rf) in line with the concept of micro-strip patch antenna (MPA). To ascertain the dielectric constant (𝜺r) of PB-72, 03 different substrates (assuming 𝜺r = 4, 5, 6) were 3D-printed based on simulated results as per high-frequency structure simulator (HFSS) software and their sensing capability were explored. A ring-resonator (RR) test was performed on these substrates and their Rf characteristics were noticed using a Vector network analyzer (VNA). The sensing results in terms of its reflection coefficient (S11), reverse transmission (S21), and specific absorption ratio (SAR) were noticed and the substrate corresponding to 𝜺r = 4 was found selected in the range of industrial scientific and medical (ISM) band.