Microplates are the building blocks of many micro-electro-mechanical systems. It is common
for them to experience initial curvature imperfection due to residual stresses caused by the …

Acoustic sensors for specific-frequency detection are used in various applications, and their
sensitivity improvement has been attracting significant attention. Mechanical acoustic …

In this study, a piezoelectric micromachined ultrasonic transducer (PMUT) is integrated with
a microliter-sized volume-tunable Helmholtz resonator. The passive Helmholtz resonator is …

The favorable downscaling behavior of photoacoustic spectroscopy has provoked in recent
years a growing interest in the miniaturization of photoacoustic sensors. The individual …

In the infrasonic observation of a fumarolic field, distinguishing multiple fumarolic sources is
challenging. The array technique effectively estimates the source locations and identifies the …

In photoacoustic (PA) spectroscopy, the signal is inversely proportional to the resonant cell
volume. This favorable scaling behavior has provoked in recent years a growing interest in …

A soundwave is transmitted by adjacent molecules in the medium, and depending on the
type of sound, it exhibits various characteristics such as frequency, sound pressure, etc. If …

Piezoelectric micromachined ultrasonic transducers (PMUTs) are used to receive and
transmit ultrasonic signals in industrial and biomedical applications. This type of transducer …

Helmholtz resonator (HR) is widely used in various fields, but the classic HR usually should
satisfy the acoustically compact condition, which limits the application range of the classic …

为研究Helmholtz 声源的声学特性, 设计并制作了一款由扬声器和Helmholtz 共振器组成的
Helmholtz 声源, 并对其等效声阻抗, 两端电压, 输出声压值和电声转换效率随信号频率变化的 …