Nanoscale Thermal Management of Single SnO2 Nanowire: Pico-Joule Energy Consumed Molecule Sensor

Gang Meng, Fuwei Zhuge, Kazuki Nagashima, Atsuo Nakao, Masaki Kanai, Yong He, Mickael Boudot, Tsunaki Takahashi, Ken Uchida, Takeshi Yanagida

    Research output: Contribution to journalArticlepeer-review

    54 Citations (Scopus)


    Here we report the thermal management of oxide nanowire sensor in both spatial and time domains by utilizing unique thermal properties of nanowires, which are (1) the reduced thermal conductivity and (2) the short thermal relaxation time down to several microseconds. Our method utilizes a pulsed self-Joule-heating of suspended SnO2 nanowire device, which enables not only the gigantic reduction of energy consumption down to ∼102 pJ/s, but also enhancement of the sensitivity for electrical sensing of NO2 (100 ppb). Furthermore, we demonstrate the applicability of the present method as sensors on flexible PEN substrate. Thus, this proposed thermal management concept of nanowires in both spatial and time domains offers a strategy for exploring novel functionalities of nanowire-based devices.

    Original languageEnglish
    Pages (from-to)997-1002
    Number of pages6
    JournalACS Sensors
    Issue number8
    Publication statusPublished - 2016 Aug 26


    • flexible device
    • nanoscale thermal management
    • pulse measurement
    • single nanowire device
    • thermal conductivity
    • thermal relaxation time

    ASJC Scopus subject areas

    • Bioengineering
    • Instrumentation
    • Process Chemistry and Technology
    • Fluid Flow and Transfer Processes


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