A new mass sensor based on thickness-twist edge modes in a piezoelectric plate

Abstract

We propose a new mass sensor based on thickness-twist edge modes in a piezoelectric plate of 6 mm crystals. By performing a theoretical analysis, a simple expression of sensitivity is obtained. The proposed sensor has an important advantage in the sense that it can be mounted away from the edge of the plate where the motion is insignificant and, thus, the operation of the device is unaffected.

Dynamic Anti-Plane Problems of Piezoceramics and Applications in Ultrasonics—A Review

“…It was further shown in Ref. [34] that an edge mode mass sensor can be made to detect additional mass on the edge through the mass-frequency effect. Modes in a finite rectangular plate (Fig.6(e)) were given in Ref.…”

“…Frequency shift in resonators (vibrating bodies) due to an additional surface mass layer can be used to make mass sensors [34] . Figure 10 shows a typical structure of a plate SH mode mass sensor and the mass-frequency effect [44] .…”

Analytical and numerical modeling of resonant piezoelectric devices in China-A review

“…A mass sensor based on TT edge modes in a semi-infinite plate was proposed in ref. [195] with a simple expression of its sensitivity. Mass sensitivity of TT modes in a finite plate of 6mm crystals was analyzed in ref.…”

Double-tip piezoresponse force microscopy for quantitative measurement of the piezoelectric coefficient at the nanoscale

“…Introduction. -Piezoelectric materials exhibiting electromechanical couplings have been widely used in actuators [1], sensors [2,3], transducers [4], and energy harvesting devices [5][6][7]. In recent years, piezoresponse force microscopy (PFM) has emerged as a powerful tool for characterizing the piezoelectric response of a variety of polar materials at the nanoscale, including piezoelectrics [8][9][10], ferroelectrics [11][12][13][14][15], electroactive moleculars [16,17], and biological systems [18,19].…”