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Void-Engineered Metamaterial Delay Line with Built-In Impedance Matching for Ultrasonic Applications [PDF]
SensorsMetamaterials exhibit unique ultrasonic properties that are not always achievable with traditional materials. However, the structures and geometries needed to achieve such properties are often complex and difficult to obtain using common fabrication ...
Rajendra P. Palanisamy +3 more
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Free-space optical delay line using space-time wave packets [PDF]
Nature Communications, 2020 Delay lines are a critical part of future optical communications. Here, the authors create a delay line in free space by tuning the group velocities of multiple inline space-time wavepackets to introduce different delays.
Murat Yessenov +3 more
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A Novel Love Wave Mode Sensor Waveguide Layer with Microphononic Crystals
Applied Sciences, 2021 Surface acoustic wave (SAW) sensors have been applied in various areas with many advantages, such as their small size, high sensitivity and wireless and passive form. Love wave mode sensors, an important kind of SAW sensor, are mostly used in biology and
Yahui Tian +6 more
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A New Chipless RFID Permittivity Sensor System
IEEE Access, 2021 Permittivity sensing is commonly utilized in multiple fields for various applications. In this study, an enhanced RFID (Radio Frequency Identification) permittivity sensor system is designed. Additionally, we investigated the signal processing procedures
Yang Wang +4 more
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Mathematics, 2022 Comparative results of calculation and measurement of the frequency responses of the surface acoustic waves filter on a piezoelectric substrate of 64°YX-cut lithium niobate and delay line on a piezoelectric substrate of 128°YX-cut lithium niobate is ...
Aleksey S. Koigerov
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Synaptic Delays for Insect-Inspired Temporal Feature Detection in Dynamic Neuromorphic Processors
Frontiers in Neuroscience, 2020 Spiking neural networks are well-suited for spatiotemporal feature detection and learning, and naturally involve dynamic delay mechanisms in the synapses, dendrites, and axons.
Fredrik Sandin, Mattias Nilsson
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Sensors, 2023 A comparative analysis of the responses of two types of acoustic waves (surface SAW and plate APW) with close frequencies and the same type of waves (SAW) with different frequencies toward various liquid vapors (water, acetone, ethanol) was carried out ...
Andrey Smirnov +9 more
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Topological Acoustic Delay Line [PDF]
Physical Review Applied, 2018 Topological protected wave engineering in artificially structured media is at the frontier of ongoing metamaterials research that is inspired by quantum mechanics. Acoustic analogues of electronic topological insulators have recently led to a wealth of new opportunities in manipulating sound propagation with strikingly unconventional acoustic edge ...
Zhang, Zhiwang +5 more
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Enhanced Sensitivity of Surface Acoustic Wave-Based Rate Sensors Incorporating Metallic Dot Arrays
Sensors, 2014 A new surface acoustic wave (SAW)-based rate sensor pattern incorporating metallic dot arrays was developed in this paper. Two parallel SAW delay lines with a reverse direction and an operation frequency of 80 MHz on a same X-112°Y LiTaO3 wafer are ...
Wen Wang +4 more
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FORMATION OF THE DIRECTION DIAGRAM IN PHASED ANTENNA ARRAY
Российский технологический журнал, 2019 The article presents the results of the study of phase and temporal methods in the formation of the direction diagram of phased antenna array, and carries out a comparative analysis using an eight-element equidistant antenna array based on Vivaldi ...
N. M. Legkiy, I. V. Unchenko
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