Abstract
In this work, we demonstrate the potential of a piezoelectric resonator for developing a low-cost sensor system to detect microscopic particles in real-time, which can be present in a wide variety of environments and workplaces. The sensor working principle is based on the resonance frequency shift caused by particles collected on the resonator surface. To test the sensor sensitivity obtained from mass-loading effects, an Aluminum Nitride-based piezoelectric resonator was exposed to cigarette particles in a sealed chamber. In order to determine the resonance parameters of interest, an interface circuit was implemented and included within both open-loop and closed-loop schemes for comparison. The system was capable of tracking the resonance frequency with a mass sensitivity of 8.8 Hz/ng. Although the tests shown here were proven by collecting particles from a cigarette, the results obtained in this application may have interest and can be extended towards other applications, such as monitoring of nanoparticles in a workplace environment.
Highlights
Microscopic particles are present in many environments, e.g., the aerospace, healthcare or pharmaceutical industries, and workplaces
In this work, we demonstrate the potential of a piezoelectric resonator for developing a low-cost sensor system to detect microscopic particles in real-time, which can be present in a wide variety of environments and workplaces
To test the sensor sensitivity obtained from mass-loading effects, an Aluminum Nitride-based piezoelectric resonator was exposed to cigarette particles in a sealed chamber
Summary
Microscopic particles are present in many environments, e.g., the aerospace, healthcare or pharmaceutical industries, and workplaces. For this reason, many studies have been reported about the adverse effects to human health due to their small size and the potential to cause respiratory diseases [1,2,3]. IInn aaddddiittiioonn,, tthhee rreessoonnaattoorr cchhiipp ccoouulldd bbee cclleeaanneedd wwiitthh iissoopprrooppaannooll wwiitthhoouutt nneeeeddiinngg ttoo bbee rreemmoovveedd bbeeffoorree ffrroomm iittss ppaacckkaaggee. IInn aaddddiittiioonn,, aa cclloosseedd--lloooopp cciirrccuuiitt,, bbaasseedd oonn tthhee pphhaassee--lloocckkeedd lloooopp ((PPLLLL)) iinntteeggrraatteedd cciirrccuuiitt 7744HHCCTT44004466 [[2299]],, iiss iimmpplleemmeenntteedd ffoorr ttrraacckkiinngg tthhee rreessoonnaanntt ppaarraammeetteerrss ooff tthhee rreessoonnaattoorr. IsIncirthcuisitc, itrhceuifte,etdhbeacfekeedrbraocrksiegrnraolrissiagnpahlaissealapgh, ainssetelaagd, ionfsateavdolotafgaevoorltacugreroenr tcuarsreinntcaosnivnecnotinovneanltfioeendabl afecekdsbyasctkemsyss.teTmhes.sTelhfe-csoerlrfe-ccotirnrgecctianpgabcailpitaybiolfitythoisf tshyisstesmystaelmlowalslotwhes tPhLeLPLtoLmtoomdiofyditfhyethoescoisllcailtliaotniofnrefqreuqeunecnycaysaas afufuncntcitoinonoof fmmaasssscchhaannggeess oonn tthhee rreessoonnaattoorr ssuurrffaaccee dduuee ttoo tthhee aaddddiittiioonn ooff ppaarrttiicclleess. FFiigguurree 44..SchSecmheamticatoicf pohfaspeh-laoscek-elodckloeodp l(oPoLpL)(7P4LHLC) T7440H4C6 To4sc0i4ll6atoorscciilrlacutoitr incicrlcuudiitngintchluedinintegrfathcee icnirtceurfiat.ce circuit
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
