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Issue 46, 2018
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Multi-modal, ultrasensitive, wide-range humidity sensing with Ti3C2 film

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Abstract

Gravimetric, direct-current electrical, and electrical impedance sensing modes were used to measure response of high surface area 2D Ti3C2 MXene film to water vapor pressures spanning 3 orders of magnitude (20 mTorr–20 Torr). The Ti3C2 film exhibited reproducible reversible response in 0.1%–95% relative humidity (RH) range with a detection limit of <20 mTorr H2O partial pressure (<0.1% RH). DC electrical current-based sensing with 3 mV operating voltage and 0.8 pW power consumption was demonstrated. The highest normalized sensitivity was shown for gravimetric sensing modalities which scale with the overtone number, reaching highest sensitivity of about 12 Hz/% RH at the 9th crystal overtone (45 MHz oscillation).

Graphical abstract: Multi-modal, ultrasensitive, wide-range humidity sensing with Ti3C2 film

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Publication details

The article was received on 27 Jun 2018, accepted on 06 Nov 2018 and first published on 09 Nov 2018


Article type: Paper
DOI: 10.1039/C8NR05170D
Citation: Nanoscale, 2018,10, 21689-21695
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    Multi-modal, ultrasensitive, wide-range humidity sensing with Ti3C2 film

    E. S. Muckley, M. Naguib and I. N. Ivanov, Nanoscale, 2018, 10, 21689
    DOI: 10.1039/C8NR05170D

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