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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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Supplementary files

Article information


Submitted
27 Jun 2018
Accepted
06 Nov 2018
First published
09 Nov 2018

Nanoscale, 2018,10, 21689-21695
Article type
Paper
Author version available

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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