Quantitative measurement with scanning thermal microscope by preventing the distortion due to the heat transfer through the air

Kyeongtae Kim, Jaehun Chung, Gwangseok Hwang, Ohmyoung Kwon, Joon Sik Lee

    Research output: Contribution to journalArticlepeer-review

    120 Citations (Scopus)

    Abstract

    Because of its high spatial resolution, scanning thermal microscopy (SThM) has been developed quite actively and applied in such diverse areas as microelectronics, optoelectronics, polymers, and carbon nanotubes for more than a decade since the 1990s. However, despite its long history and diverse areas of application, surprisingly, no quantitative profiling method has been established yet. This is mostly due to the nonlocal nature of measurement by conventional SThM: the signal measured by SThM is induced not only from the local heat flux through the tip-sample thermal contact but also (and mostly) from the heat flux through the air gap between the sample and the SThM probe. In this study, a rigorous but simple and practical theory for quantitative SThM for local measurement is established and verified experimentally using high-performance SThM probes. The development of quantitative SThM will make possible new breakthroughs in diverse fields of nanothermal science and engineering.

    Original languageEnglish
    Pages (from-to)8700-8709
    Number of pages10
    JournalACS nano
    Volume5
    Issue number11
    DOIs
    Publication statusPublished - 2011 Nov 22

    Keywords

    • quantitative profiling
    • scanning thermal microscopy
    • temperature
    • thermal conductivity
    • thermocouple probe

    ASJC Scopus subject areas

    • General Materials Science
    • General Engineering
    • General Physics and Astronomy

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