Abstract
This paper presents a biocompatible flexible pressure sensor fabricated by employing a biocompatible organic ferroelectric, namely, single protonated 1,4-diazabicyclo[2.2.2]octane fluoroborate ([Hdabco]BF <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> ) embedded in poly(vinylidene fluoride) (PVDF) polymer. The presented device generated an output voltage of 6.5 V, which is more than twice the voltage generated by pristine polymeric device. When used as pressure sensor, the device showed a high sensitivity of 0.4 V/kPa and a linear response for external compressive pressures that ranged between 1.6 kPa to 12.8 kPa. These results demonstrate that [Hdabco]BF <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> @ PVDF composite is a promising material for applications such as wearable electronics where biocompatible and self-powered sensors are much needed.
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