A novel air flow sensor from printed PEDOT micro-hairs

We report the creation of a low flow rate sensor from PEDOT micro-hairs. The hairs are printed as pipette-defined depositions using a nanopositioning system. The printing technique was developed for fabricating structures in 2D and 3D. Here micro-hairs with diameters of 4.4 μm were repeatedly extrud...

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Bibliographic Details
Published in:Smart materials and structures 2013-11, Vol.22 (11), p.112001-1-6
Main Authors: Parcell, J, Aydemir, N, Devaraj, H, Travas-Sejdic, J, Williams, D E, Aw, K C
Format: Article
Language:English
Subjects:
Deposition
Exact sciences and technology
General equipment and techniques
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Physics
Sensors (chemical, optical, electrical, movement, gas, etc.)
remote sensing
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Summary:We report the creation of a low flow rate sensor from PEDOT micro-hairs. The hairs are printed as pipette-defined depositions using a nanopositioning system. The printing technique was developed for fabricating structures in 2D and 3D. Here micro-hairs with diameters of 4.4 μm were repeatedly extruded with constant heights. These hairs were then applied to produce a prototype flow rate sensor, which was shown to detect flows of 3.5 l min−1. Structural analysis was performed to demonstrate that the design can be modified to potentially observe flows as low as 0.5 l min−1. The results are extended to propose a practical digital flow rate sensor.
ISSN:0964-1726
1361-665X
DOI:10.1088/0964-1726/22/11/112001