Transmission of real-time data is strongly increasing due to remote processing of sensor data, among other things. A route to meet this demand is adaptive sensing, in which sensors acquire only relevant information using pre-processing at sensor level. We present here adaptive acoustic sensors based on mechanical oscillators with integrated sensing and actuation. Their dynamics are shifted into a nonlinear regime using feedback or coupling. This enhances dynamic range, frequency resolution and signal-to-noise ratio. Combining tunable sensing properties with sound analysis could enable acquiring of only relevant information rather than extracting this from irrelevant data by post-processing.
Glide symmetry offers new degrees of freedom to engineer the properties of periodic structures, and thus it has been exploited in various electromagnetic structures. However, so far there has been little exploration on the impact that glide symmetry can offer in the field of acoustics. In this paper, we explore glide-symmetric acoustic waveguides, highlighting their dispersion characteristics and guiding properties and demonstrating opportunities in the context of acoustic devices. Here we analytically derive their dispersive features applying a semi-analytical mode matching technique. We then…
Experimental Realization of Topological Surface Acoustic Wave Resonances under Surface Liquid Loading for Micro-volume sample Sensings
Ningbo University（宁波大学）；Zhejiang-Italy Joint Lab for Smart Materials and Advanced Structures, School of Mechanics and Engineering Science, Ningbo University（宁波大学力学与工程科学系中意智能材料与先进结构联合实验室）；Key Laboratory of Impact and Safety Engineering, Ministry of Education, Ningbo University（宁波大学教育部冲击与安全工程重点实验室）
High-sensitivity Optical Microcavity Acoustic Sensor Covering Free Spectral Range
Shanghai Jiao Tong University（上海交通大学）；Hefei National Laboratory（合肥国家实验室）；Shanghai Research Center for Quantum Sciences（上海量子科学研究中心）；Beijing Normal University（北京师范大学）
Surface-acoustic-wave (SAW) based devices have emerged as a promising technology in magnetic field sensing by integrating a magnetostrictive layer with the giant ΔE/ΔG effect. However, almost all SAW magnetic field sensors require a bias field to obtain high sensitivity. In addition, the true nature of magneto-acoustic coupling still presents a major challenge in understanding and designing of this kind of devices. In current work, a dynamic magnetoelastic model for the ΔE/ΔG effect is established in consideration of the important role of the dipole-dipole interaction. The model is also implem…
Inference of highly time-resolved melt pool visual characteristics and spatially-dependent lack-of-fusion defects in laser powder bed fusion using acoustic and thermal emission data
Physics-informed network paradigm with data generation and background noise removal for diverse distributed acoustic sensing applications
State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University（先进光通信系统与网络国家重点实验室，电子工程学院，上海交通大学）
