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    <publishedYear>2022</publishedYear>
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    <language>eng</language>
    <pageFirst>14003</pageFirst>
    <pageLast>14010</pageLast>
    <pageNumber/>
    <edition/>
    <issue>32</issue>
    <volume>126</volume>
    <type>article</type>
    <publisherName>American Chemical Society (ACS)</publisherName>
    <publisherPlace>Washington, DC</publisherPlace>
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    <title language="eng">Characterizing the thermal diffusivity of single, micrometer-sized fibers via high-resolution lock-in thermography</title>
    <abstract language="eng">Many advanced materials consist of fibers. They are used as nonwovens, fabrics, or in composite materials. Characterization of individual fibers allows us to predict resulting material properties. We present a measurement setup and analysis software to characterize individual, micrometer-sized fibers fast and reliably. The setup is based on the lock-in thermography principle. Thermal diffusivity values of seven reference samples agree very well with previously reported values. We use our setup to investigate critical measurement parameters like excitation frequency, excitation power, pixel size, and fiber orientation. Our results show that fibers with subpixel diameters can be measured even if they are not aligned. However, special care has to be taken to choose an adequate excitation power. Measurements at high intensities can underestimate thermal diffusivity even though the raw data looks reasonable. By automatically measuring at different excitation powers, our setup solves this issue.</abstract>
    <parentTitle language="eng">The journal of physical chemistry C</parentTitle>
    <identifier type="issn">1932-7455</identifier>
    <identifier type="doi">10.1021/acs.jpcc.2c04254</identifier>
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    <author>T. Tran</author>
    <author>C. Kodisch</author>
    <author>M. Schöttle</author>
    <author>Nelson Wilbur Pech May</author>
    <author>M. Retsch</author>
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      <language>eng</language>
      <type>uncontrolled</type>
      <value>Surfaces, coatings and films</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
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    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>General energy</value>
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      <language>eng</language>
      <type>uncontrolled</type>
      <value>Electronic, optical and magnetic materials</value>
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    <collection role="ddc" number="543">Analytische Chemie</collection>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="institutes" number="">8 Zerstörungsfreie Prüfung</collection>
    <collection role="institutes" number="">8.3 Thermografische Verfahren</collection>
    <collection role="themenfelder" number="">Umwelt</collection>
    <collection role="themenfelder" number="">Material</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="themenfelder" number="">Sensorik</collection>
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