Experimental Investigation of Surface Acoustic Wave Acoustoelectric Effect Using a Graphene Film on Lithium Niobate

Carmichael, Christopher; Smith, Marshall S.; Weeks, Arthur R.; Malocha, D.C.

doi:10.1109/tuffc.2018.2870042

Cited by 16 publications

(6 citation statements)

References 12 publications

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“…Due to negative sign of charges inside a nanowire the direction of corresponding I ae is opposite to the acoustic wave propagation direction (figure 2). It is known that in case of change acoustic wave propagation direction the corresponding CVC characteristic will shift up [8,9]. In the experiment, the dependence of the acoustoelectric current on the amplitude of the excited acoustic wave is observed.…”

Section: Resultsmentioning

confidence: 83%

Influence of plate acoustic waves on electronic transport in nanowires

et al. 2020

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The acoustoelectric effect is the generation of a acoustoelectric current in a non-biased device by a piezoactive acoustic wave. This effect has recently attracted the attention of researchers as a possible method to control the motion of massive objects in the quantum regime. We suggest using this effect for development of highly sensitive nanoelectronic sensors. The sensitivity could be increased through the use of modulation mode of operation based on the acoustic pilot signal and the transition from quasi-stationary measurement to measurement at the modulation frequency. The acoustic delay line based on shear-horizontal acoustic wave of zero order (SH0) with resonant frequency 3.25 MHz in Y-X LiNbO3 plate was produced. The nanostructure consisting of nanowire with size 20 nm × 180 nm was placed in the center between IDTs. The current–voltage characteristics of this nanowire in the presence and absence of the acoustic wave were meazured by a picoampermeter. The analysis has shown that the presence of piezoactive acoustic wave is influenced by electric current in a nanowire.

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Section: Resultsmentioning

confidence: 83%

Influence of plate acoustic waves on electronic transport in nanowires

et al. 2020

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“…The mass loading on the surface of the sensor and the elastic and viscoelastic are the mechanical deformation caused by the interaction between the sensing layer and the targeted analytes [ 59 ]. In addition, these effects are called the acoustoelectric effects which are the effects that result from the interaction between the presented targeted analyte in the sensing layer and the electrical field associated with the SAW waves [ 202 ].…”

Section: Piezoelectric Mems Actuating and Sensing For Gas Detectionmentioning

confidence: 99%

A review of piezoelectric MEMS sensors and actuators for gas detection application

et al. 2023

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Piezoelectric microelectromechanical system (piezo-MEMS)-based mass sensors including the piezoelectric microcantilevers, surface acoustic waves (SAW), quartz crystal microbalance (QCM), piezoelectric micromachined ultrasonic transducer (PMUT), and film bulk acoustic wave resonators (FBAR) are highlighted as suitable candidates for highly sensitive gas detection application. This paper presents the piezo-MEMS gas sensors’ characteristics such as their miniaturized structure, the capability of integration with readout circuit, and fabrication feasibility using multiuser technologies. The development of the piezoelectric MEMS gas sensors is investigated for the application of low-level concentration gas molecules detection. In this work, the various types of gas sensors based on piezoelectricity are investigated extensively including their operating principle, besides their material parameters as well as the critical design parameters, the device structures, and their sensing materials including the polymers, carbon, metal–organic framework, and graphene.

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“…Recently, SAW technology has been extensively investigated for UV detection based on the acoustoelectric effect 20 , mass-loading effect, and photo-capacitive effect 21 . Compared with other types of UV sensors, SAW sensors have many advantages, such as easy integration with integrated circuits (ICs), miniaturization, portability, a uniquely remote wireless operation capability, and potentially zero power consumption 22 .…”

Section: Introductionmentioning

confidence: 99%

A new strategy to minimize humidity influences on acoustic wave ultraviolet sensors using ZnO nanowires wrapped with hydrophobic silica nanoparticles

Guo

Zhou

et al. 2022

Microsyst Nanoeng

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Surface acoustic wave (SAW) technology has been widely developed for ultraviolet (UV) detection due to its advantages of miniaturization, portability, potential to be integrated with microelectronics, and passive/wireless capabilities. To enhance UV sensitivity, nanowires (NWs), such as ZnO, are often applied to enhance SAW-based UV detection due to their highly porous and interconnected 3D network structures and good UV sensitivity. However, ZnO NWs are normally hydrophilic, and thus, changes in environmental parameters such as humidity will significantly influence the detection precision and sensitivity of SAW-based UV sensors. To solve this issue, in this work, we proposed a new strategy using ZnO NWs wrapped with hydrophobic silica nanoparticles as the effective sensing layer. Analysis of the distribution and chemical bonds of these hydrophobic silica nanoparticles showed that numerous C-F bonds (which are hydrophobic) were found on the surface of the sensitive layer, which effectively blocked the adsorption of water molecules onto the ZnO NWs. This new sensing layer design minimizes the influence of humidity on the ZnO NW-based UV sensor within the relative humidity range of 10–70%. The sensor showed a UV sensitivity of 9.53 ppm (mW/cm2)−1, with high linearity (R2 value of 0.99904), small hysteresis (<1.65%) and good repeatability. This work solves the long-term dilemma of ZnO NW-based sensors, which are often sensitive to humidity changes.

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Experimental Investigation of Surface Acoustic Wave Acoustoelectric Effect Using a Graphene Film on Lithium Niobate

Cited by 16 publications

References 12 publications

Influence of plate acoustic waves on electronic transport in nanowires

Influence of plate acoustic waves on electronic transport in nanowires

A review of piezoelectric MEMS sensors and actuators for gas detection application

A new strategy to minimize humidity influences on acoustic wave ultraviolet sensors using ZnO nanowires wrapped with hydrophobic silica nanoparticles

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