Results 11 to 20 of about 14,116,486 (379)

Spatiotemporal Acoustic Communication by a Single Sensor via Rotational Doppler Effect. [PDF]

open access: yesAdv Sci (Weinh), 2023
A longstanding pursuit in information communication is to increase transmission capacity and accuracy, with multiplexing technology playing as a promising solution.
Zhang C, Jiang X, He J, Li Y, Ta D.
europepmc   +2 more sources

Acoustic topological beam nonreciprocity via the rotational Doppler effect. [PDF]

open access: yesSci Adv, 2022
Reciprocity is a fundamental principle of wave physics related to time-reversal symmetry. Nonreciprocal wave behaviors have been pursued for decades because of their great scientific significance and tremendous potential applications.
Wang Q   +5 more
europepmc   +2 more sources

Remote Measurement of the Angular Velocity Vector Based on Vectorial Doppler Effect Using Air-Core Optical Fiber. [PDF]

open access: yesResearch (Wash D C), 2022
Rotational Doppler effect has made tremendous development in both theoretical and applied research over the last decade. Different from the inertial thinking of focusing on the scalar field dominated by helical phase light, we have revealed a vectorial ...
Wan Z   +7 more
europepmc   +2 more sources

Cascaded rotational Doppler effect [PDF]

open access: yesOptics Letters, 2019
We propose and substantiate experimentally the cascaded rotational Doppler effect for interactions of spinning objects with light carrying angular momentum. Based on the law of parity conservation for electromagnetic interactions, we reveal that the frequency shift can be doubled through cascading two rotational Doppler processes which are mirror ...
Deng, Junhong   +3 more
openaire   +5 more sources

Doppler effect described by the solutions of the Cattaneo telegraph equation. [PDF]

open access: yesActa Mech, 2021
The Cattaneo telegraph equation for temperature with moving time-harmonic source is studied on the line and the half-line domain. The Laplace and Fourier transforms are used.
Povstenko Y, Ostoja-Starzewski M.
europepmc   +2 more sources

Rotational Doppler Effect: A Review

open access: yesAnnals of Physics, 2023
Generally, the linear motion between the source of a wave and an observer leads to a linear Doppler effect. It is associated with the linear momentum of the wave. For electromagnetic beams having a circular polarization or an azimuthal phase distribution,
O. Emile, J. Emile
semanticscholar   +1 more source

The Rotational Doppler Effect of Twisted Photons in Scattered Fields

open access: yesLaser & Photonics Reviews, 2023
Along with broad applications of the linear Doppler effect, the rotational Doppler effect (RDE) of a structured light source carrying orbital angular momentum (OAM) has attracted significant attention for applications ranging from optical sensors to ...
Yanwang Zhai   +5 more
semanticscholar   +1 more source

Rotational object detection at noncoaxial light incidence based on the rotational Doppler effect.

open access: yesOptics Express, 2022
The rotational Doppler effect (RDE) of optical vortex which can be used to detect the rotation speed, has become a well-known phenomenon and a hot topic of research in recent years.
Song Qiu   +4 more
semanticscholar   +1 more source

Phase-Induced Frequency Conversion and Doppler Effect With Time-Modulated Metasurfaces [PDF]

open access: yesIEEE Transactions on Antennas and Propagation, 2020
Metasurfaces consisting of electrically thin and densely packed planar arrays of subwavelength elements enable an unprecedented control of the impinging electromagnetic fields.
D. Ramaccia   +4 more
semanticscholar   +1 more source

Chipless RFID Based on Micro-Doppler Effect

open access: yesIEEE transactions on microwave theory and techniques, 2022
This article demonstrates how motion effect can be exploited to read moving chipless radio frequency identification (RFID) tags at larger distances compared to what has been reached without taking into account the movement.
Ashkan Azarfar, N. Barbot, E. Perret
semanticscholar   +1 more source

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