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        <full_title>WSEAS TRANSACTIONS ON ENVIRONMENT AND DEVELOPMENT</full_title>
        <issn media_type="print">1790-5079</issn>
        <issn media_type="electronic">2224-3496</issn>
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        <titles>
          <title>Flexible Carbon Nanotube Hydrogen Gas Sensor based on PET Substrate</title>
        </titles>
        <contributors>
          <person_name sequence="first" contributor_role="author">
            <given_name>Ahmad M.</given_name>
            <surname>Al-Diabat</surname>
            <affiliations>
              <institution>
                <institution_name>Department of Physics, Al-Zaytoonah University of Jordan, Amman, JORDAN </institution_name>
              </institution>
            </affiliations>
          </person_name>
          <person_name sequence="additional" contributor_role="author">
            <given_name>Natheer A.</given_name>
            <surname>Algadri</surname>
            <affiliations>
              <institution>
                <institution_name>Department of Physics, Isra University, Amman, JORDAN</institution_name>
              </institution>
            </affiliations>
          </person_name>
          <person_name sequence="additional" contributor_role="author">
            <given_name>Naser M.</given_name>
            <surname>Ahmed</surname>
            <affiliations>
              <institution>
                <institution_name>Department of Laser and Optoelectronics Engineering, Dijlah University College, Baghdad, IRAQ</institution_name>
              </institution>
            </affiliations>
          </person_name>
          <person_name sequence="additional" contributor_role="author">
            <given_name>Tariq</given_name>
            <surname>Alzoubi</surname>
            <affiliations>
              <institution>
                <institution_name>College of Engineering and Technology, American University of the Middle East, Egaila, 54200, KUWAIT </institution_name>
              </institution>
            </affiliations>
          </person_name>
          <person_name sequence="additional" contributor_role="author">
            <given_name>Ghaseb N.</given_name>
            <surname>Makhadmeh</surname>
            <affiliations>
              <institution>
                <institution_name>General Education Department, Skyline University College, Sharjah, P.O. Box 1797, UAE</institution_name>
              </institution>
            </affiliations>
          </person_name>
          <person_name sequence="additional" contributor_role="author">
            <given_name>Abdulsalam</given_name>
            <surname>Abuelsamen</surname>
            <affiliations>
              <institution>
                <institution_name>Medical Imaging and Radiography Department, Aqaba University of Technology, Aqaba 910122, JORDAN</institution_name>
              </institution>
            </affiliations>
          </person_name>
          <person_name sequence="additional" contributor_role="author">
            <given_name>Osama Abu</given_name>
            <surname>Noqta</surname>
            <affiliations>
              <institution>
                <institution_name>MEU Research Unit, Middle East University, Amman 11831, JORDAN</institution_name>
              </institution>
            </affiliations>
          </person_name>
          <person_name sequence="additional" contributor_role="author">
            <given_name>Amal Mohamed</given_name>
            <surname>Ahmed Ali</surname>
            <affiliations>
              <institution>
                <institution_name>Prince Sattam Bin Abdulaziz University, Alkharj 11942, SAUDI ARABIA</institution_name>
              </institution>
            </affiliations>
          </person_name>
        </contributors>
        <jats:abstract xml:lang="en">
          <jats:p>This study presents a cost-effective and straightforward approach for fabricating a highly effective sensor to hydrogen (H2) gas using carbon nanotubes (CNTs), which were synthesized by a conventional microwave oven. To optimize CNT properties, a series of five purification processes were employed to eliminate impurities such as metal particles and support material from the carbon nanotubes produced. Then CNT was deposited onto a polyethylene thermal (PET) substrate through the application of a dielectrophoretic method. The gas sensors which fabricated have many significant exceptional characteristics, including high flexibility, remarkable conformability, and cost-effectiveness. The carbon nanotubes (CNTs) demonstrated significant sensitivity when exposed to H2 gas at room temperature (RT). At a concentration of 140 parts per million (ppm) of H2, the CNTs exhibited a remarkable sensitivity of up to 15%.</jats:p>
        </jats:abstract>
        <publication_date media_type="print">
          <month>12</month>
          <day>17</day>
          <year>2025</year>
        </publication_date>
        <publication_date media_type="online">
          <month>12</month>
          <day>17</day>
          <year>2025</year>
        </publication_date>
        <pages>
          <first_page>1403</first_page>
        </pages>
        <publisher_item>
          <item_number item_number_type="article_number">115</item_number>
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          <ai:license_ref>https://creativecommons.org/licenses/by/4.0/deed.en_US</ai:license_ref>
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          <doi>10.37394/232015.2025.21.115</doi>
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