[email protected] D.S.C., Dipartimento di Scienze Chimiche, University of Catania, Viale Andrea Doria six, 95125 Catania, Italy; [email protected] D.I.C.Ar., Dipartimento di Ingegneria Civile e Architettura, University of Catania, Viale Andrea Doria 6, 95125 Catania, Italy; [email protected] Correspondence: [email protected] (C.T.); [email protected] (S.G.)Abstract: Within this paper, an environmentally L-Cysteic acid (monohydrate) Autophagy friendly inertial motion sensor is investigated, modelled, and characterized as an accelerometer. The sensor is obtained by utilizing bacterial cellulose (BC) as a base biopolymer. BC is then impregnated with ionic liquids. Electrodes are realized by a conducting polymer, in a standard threelayer structure. The sensor works within a cantilever configuration and produces an open voltage signal as the outcome of a flexing deformation. A model is proposed for the transduction phenomenon. The composite mechanoelectric transduction capability is exploited for realizing the accelerometer. Results from the chemical and transduction characterization of the accelerometer are reported. Lastly, experimental evidence of your feasible nature with the transduction phenomenon is offered.Citation: Trigona, C.; Cerruto, S.; Graziani, S.; Di Pasquale, G.; Pollicino, A. Towards Environmentally Friendly Accelerometers Depending on Bacterial Cellulose. Appl. Sci. 2021, 11, 7903. https://doi.org/10.3390/app11177903 Academic Editors: Feliks Junka and Karol Fijalkowski Received: 28 June 2021 Accepted: 23 August 2021 Published: 27 AugustKeywords: greener sensors; electroactive polymers; modelling; accelerometer; characterization1. Introduction The pervasive diffusion of electronics has raised the request for lowcost, sensible, smallscale, and miniaturized sensors [1,2]. A large component of each the present and future markets is going to be covered by accelerometers, with quite a few consumable applications in fields such automobiles, cellphones, and wearable electronics, just to mention a few [3]. The interest within this class of sensors is reflected inside a variety of fabrication processes and functioning principles, for instance resonators and micromachined devices (MOEMS and MEMS) [4]. As a popular trend with the adopted technology, the sensor market has proposed integrated accelerometers [8]. In addition, accelerometers exploiting BTS 40542 In stock optical, resistive, capacitive, and so on., transduction mechanisms happen to be proposed [6,7,9]. The cost from the sensing method is usually a relevant constraint that can determine the good results of technologies, as well as the examples reported above are impacted by the want for any power source. Such a drawback is often overcome if selfgenerating supplies [10], including piezoelectric and aluminum nitride (AlN) [113], are viewed as. Although sensors according to AlN have raised scientific and industrial interest, micromachined AlNbased devices are depending on siliconbased processes [14]. As such, the production of sensors depending on this technology can’t be considered green. Moreover, they need to have committed recycling or disposing processes [15,16]. As a final remark, siliconbased devices are rigid, while flexibility is requested from nextgeneration applications [17]. The need to have for greener sensing devices, i.e., requiring fewer raw components and much less power and limited amounts of nonrenewable matter and making a lot more simply disposable, recyclable, or perhaps biodegradable devices, imposes the improvement of new technologies according to extra sustainable and greener supplies. A trend is take place.