Acoustic Wave Bio Sensors Pavana Rupa Bondili ECE 5320 Mechatronics Assignment #1Acoustic Wave Bio Sensors OutlineBio SensorsSlide 4Bio Sensors: Sounds good! What are these?Slide 6How Do They Look Like ?Slide 8How Do They Work ?Slide 10Can We see the Basic design of the Bio Sensor?Slide 12On What Basis Are The Bio Sensors Classified?Slide 14Which type of sensor are we interested more in and why?Acoustic Wave Bio SensorsHow do these work?Slide 18Slide 19What material is this Bio Sensor made from?Slide 21Why just piezoelectric materials ?Slide 23Slide 24How are the Acoustic Wave Bio Sensors Classified Further ?Slide 26Can we know more about these classifications ?Slide 28Slide 29Slide 30Can we some real time application using the Acoustic Bio Sensor ?Slide 32Slide 33What are the primary applications of Acoustics Wave Bio Sensor ?Slide 35Slide 36What do you conclude from this presentation?Slide 38Slide 39Slide 40Slide 41Acoustic Wave Bio Sensors Pavana Rupa Bondili ECE 5320 Mechatronics Assignment #1Acoustic Wave Bio Sensors OutlineReference listTo probe furtherTechnology OverviewBio Sensors And Principle of OperationClassification of Bio SensorsAcoustic Wave Bio Sensor Working Principal And the materials they are made of Classification Of Bio SensorsApplicationsConclusionVendor ListBio SensorsReference List:Websites used for the survey of the study:-http://www.rpi.edu/dept/chem-eng/Biotech Environ/BIOSEN/biosen.htm-http://ieeexplore.ieee.org/iel2/3521/10600/00495619.pdf?isnumber=10600&prod=STD&arnumber=495619&arnumber=495619&arSt=451&ared=460+vol.1&arAuthor=Andle%2C+J.C.%3B+Vetelino%2C+J.F.-http://en.wikipedia.org/wiki/Biosensor-http://www.ornl.gov/info/ornlreview/rev29_3/text/biosens.htmBio SensorsTo Probe Further :Recent Articles:Biosensors and Other Medical and Environmental Probes By K. Bruce Jacobson.Introduction to sensors and actuators By Professor Mark Bachman.“Acoustic wave biosensors” By J. C. Andle and J. F. Vetelino.Bio Sensors: Sounds good! What are these?Bio SensorsBio sensors serve as the interface between living and electronic systems.The sensor transmits the information from the living system to the electronic system and the transfer is unilateral.How Do They Look Like ?Bio SensorsHow Do They Work ?Bio SensorsA biosensor is a sensor that is based on the use of biological material for its sensing function. The bio component specifically reacts or interacts with the analyte of interest resulting in a detectable chemical or physical change.Schematic Diagram Of Bio Sensor:Can We see the Basic design of the Bio Sensor?Bio SensorsOn What Basis Are The Bio Sensors Classified?Bio SensorsTypes Of Bio Sensors:1) Calorimetric biosensors,2) Potentiometric biosensors,3) Amperometric biosensors,4) Optical biosensors ,5) Acoustic wave biosensors.Which type of sensor are we interested more in and why?Acoustic Wave Bio SensorsBiosensors made with acoustic wave technology are sensitive, accurate, small, portable, robust, and have excellent aging characteristics. Such sensors can be produced using standard photolithography and hence are inexpensive.We shall look into the working and types of this Bio Sensor.How do these work?Acoustic Wave Bio SensorsAcoustic biosensors utilize different types of acoustic waves to obtain information about the entity being measured .The range of entity measured is wide and includes a spectrum of medical, biochemical and biophysical phenomena. The acoustic waves can be generated and received by a variety of means including piezoelectric, magnetostrictive, optical, and thermal effect.Acoustic Wave Bio SensorsWhat material is this Bio Sensor made from?Acoustic Wave Bio SensorsAcoustic biosensors are fabricated with piezoelectric materials in which the electromechanical transduction takes place within the material. Therefore, piezoelectric materials are often called smart materials.Why just piezoelectric materials ?Acoustic Wave Bio SensorsThe piezoelectric materials are also very stable, chemically inert and have excellent mechanical properties and very good aging characteristics.Acoustic biosensors made with piezoelectric crystals such as quartz or lithiumniobiate are robust, and environmentally stable.Acoustic biosensors are relatively sensitive, exhibit good resolution and have a good signal-to-noise ratio.Acoustic Wave Bio SensorsPiezoelectric sensor materials is that the same electromechanical transduction mechanism can be used not only for a sensing but also for an actuation. Therefore, it is possible to develop smart bio structures in which both sensing and actuating are realized within the same piezoelectric technology platform.How are the Acoustic Wave Bio Sensors Classified Further ?Acoustic Wave Bio SensorsAcoustic sensors can be divided into three groups:1) Homogeneous Acoustic Biosensor2) Hybrid Acoustic Biosensor3) Transmission Acoustic BiosensorCan we know more about these classifications ?Acoustic Wave Bio SensorsHomogeneous Acoustic Biosensor: In this configuration an acoustic sensor consists of the piezoelectric element itself and the measurand directly influences electro acoustic properties of the element. Examples of such sensors include piezoelectric liquid density and viscosity sensors.Acoustic Wave Bio SensorsHybrid Acoustic Biosensor: In this case a sensor consists of the piezoelectric transducer and a sensing element selective to the measurand of interest. The use of different sensing elements that are usually in a form of thin films allows, in principle, a wide variety of measurands to be detected.Acoustic Wave Bio SensorsAn acoustic wave is transmitted into a gaseous, liquid or solid medium that undergoes changes due to measurands. The changes in the elastic and viscous constants, and the density of a medium due to the measurand cause the change in the velocity, the impedance, and the absorption of the acoustic wave. Examples of such sensors include a bulk acoustic wave immunosensor.Can we some real time application using the Acoustic Bio Sensor ?Acoustic Wave Bio SensorsAcoustic sensors are often designed as resonant structures of high quality factor, Q in order to obtain high sensor sensitivity and dynamic range.Two acoustic elements are used in sensor, one as a sensing element and the second as the reference in order to eliminate interfering ambient/experimental conditions such as
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