Abstract
This work addresses to the modern technologies that need to be instrumented with lightweight highly sensitive pressure sensors. The paper presents the development of a new plain flexible thin pressure sensor using a nanostructured layer of the highly sensitive organic piezoresistive metal β-(BEDT-TTF)2I3 as an active component; BEDT-TTF=bis (ethylenedithio)tetrathiafulvalene. The original construction approach permits one to operate the developed sensor on the principle of electrical resistance variations when its piezoresistive layer is elongated under a pressure increase. The pressure sensing element and a set of gold electrodes were integrated into one compact multi-layer design. The construction was optimized to enable one generic design for pressure ranges from 1 to 400 bar. The pressure tests showed that the sensor is able to control a small pressure change as a well definite electrical signal. So the developed type of the sensors is very attractive as a new generation of compact, lightweight, low-cost sensors that might monitor pressure with a good level of measurement accuracy.
Highlights
IOP PublishingV Laukhin1,2,4V Lebedev, E Laukhina, C Rovira and J Veciana Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain 2 CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain 3Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra, Spain
Engineering flexible all-organic sensing materials with electrical detection principle brings great opportunities in the field of physical sensors for their applications in hi-techs [1,2,3]
As figure 4 shows, the X-ray diffraction pattern presents the family of (00l) reflections of β-(BEDTTTF)2I3 [5a,b]; the β-(BEDT-TTF)2I3-based layer of the polycarbonate/β-(BEDT-TTF)2I3 BL film is formed by c* oriented crystals that is in a good agreement with early reported data [7, 8]
Summary
V Laukhin1,2,4V Lebedev, E Laukhina, C Rovira and J Veciana Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain 2 CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain 3Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra, Spain
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