Results 91 to 100 of about 2,219 (213)
Programming nonreciprocity and reversibility in multistable mechanical metamaterials
, 2020 Nonreciprocity can be passively achieved by harnessing material nonlinearities. In particular, networks of nonlinear bistable elements with asymmetric energy landscapes have recently been shown to support unidirectional transition waves.
Bertoldi, Katia +2 more
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OpticsTo solve the short working distance and small measurement range of an all-fibre interferometer, we proposed a Mach–Zehnder Fabry–Perot hybrid fibre-optic interferometry system based on sinusoidal phase modulation.
Yixuan Wang, Peigang Yang, Tao Jin
doaj +1 more source
Inaudible Adversarial Perturbation: Manipulating the Recognition of User Speech in Real Time
, 2023 Automatic speech recognition (ASR) systems have been shown to be vulnerable to adversarial examples (AEs). Recent success all assumes that users will not notice or disrupt the attack process despite the existence of music/noise-like sounds and ...
Ji, Xiaoyu +5 more
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A PAPR correction scheme for LoRa self‐jamming waveforms
IET CommunicationsA LoRa self‐jamming scheme that enables secure and covert communications by adding jamming symbols when transmitting is proposed. The scheme has been validated in simulations.
Clément Demeslay +5 more
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A dissipative wave packet approach for unified nonlinear acoustics [PDF]
, 1994 Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1994.Includes bibliographical references (p. 158-166).by Kenneth D.
Rolt, Kenneth D
core
Nonlinear effects for coda-type elastic waves in stressed granular media
, 2008 Experimental results and their interpretations are presented on the nonlinear acoustic effects of multiple scattered elastic waves in unconsolidated granular media.
Gusev, Vitalyi, Tournat, Vincent
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Sub-bottom high resolution sonar utilizing non-linear acoustic pulse self-demodulation
, 1982 An experiment involving the design and construction of a prototype sub-bottom high resolution sonar system utilizing nonlinear pulse self- demodulation and suitable for deep water use is described. It is possible to generate a low frequency wave using the self-demodulation of a short, high frequency, finite amplitude pulse produced by the non-linear ...
Eyman, Roy Lance +2 more
openaire +1 more source
Scientific ReportsElectrically detected magnetic resonance (EDMR) is a promising method to readout spins in miniaturized devices utilized as quantum magnetometers. However, the sensitivity has remained challenging.
Andreas Gottscholl +3 more
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PhotonicsThis paper studied a multi-channel self-mixing interferometric vibration measurement system based on a vertical-cavity surface-emitting laser array.
Wei Xia +6 more
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Linewidth Measurement of a Narrow-Linewidth Laser: Principles, Methods, and Systems
SensorsNarrow-linewidth lasers mainly depend on the development of advanced laser linewidth measurement methods for related technological progress as key devices in satellite laser communications, precision measurements, ultra-high-speed optical communications,
Jia-Qi Chen +7 more
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