Spatiotemporal Acoustic Communication by a Single Sensor via Rotational Doppler Effect
Sign Up to like & getrecommendations! Published in 2023 at "Advanced Science"
DOI: 10.1002/advs.202206619
Abstract: A longstanding pursuit in information communication is to increase transmission capacity and accuracy, with multiplexing technology playing as a promising solution. To overcome the challenges of limited spatial information density and systematic complexity in acoustic… read more here.
Keywords: single sensor; rotational doppler; communication; doppler effect ... See more keywords
Experimental Observation of Linear and Rotational Doppler Shifts from Several Designer Surfaces
Sign Up to like & getrecommendations! Published in 2019 at "Scientific Reports"
DOI: 10.1038/s41598-019-45516-1
Abstract: An orbital angular momentum (OAM) carrying beam has the ability to detect a spinning surface from its rotational Doppler effect. However, a mixture of linear and rotational Doppler effects can occur when an OAM beam… read more here.
Keywords: linear rotational; rotational doppler; doppler; designer surfaces ... See more keywords
Analysis of rotational Doppler effect based on radio waves carrying orbital angular momentum
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Applied Physics"
DOI: 10.1063/1.5050448
Abstract: The electromagnetic beam carrying orbital angular momentum (OAM) has a twisted phase front, which can induce a rotational Doppler frequency shift when it is illuminating on a spinning object. In this paper, the rotational Doppler… read more here.
Keywords: doppler effect; rotational doppler; radio; doppler ... See more keywords
Rotation of an optically trapped vaterite microsphere measured using rotational Doppler effect
Sign Up to like & getrecommendations! Published in 2018 at "Optical Engineering"
DOI: 10.1117/1.oe.57.3.036103
Abstract: Abstract. The angular velocity of a vaterite microsphere spinning in the optical trap is measured using rotational Doppler effect. The perfectly spherical vaterite microspheres are synthesized via coprecipitation in the presence of silk fibroin nanospheres.… read more here.
Keywords: using rotational; rotational doppler; measured using; rotation ... See more keywords
Acoustic topological beam nonreciprocity via the rotational Doppler effect
Sign Up to like & getrecommendations! Published in 2022 at "Science Advances"
DOI: 10.1126/sciadv.abq4451
Abstract: 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. However, nonreciprocity devices have been… read more here.
Keywords: beam; doppler effect; rotational doppler; nonreciprocity ... See more keywords
Direction-sensitive rotational speed measurement based on the rotational Doppler effect of cylindrical vector beams.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.471059
Abstract: The Doppler effect has inspired numerous applications since its discovery, initially enabling measurement of the relative velocity between a moving object and a wave source. In recent years, it has been found that scalar vortex… read more here.
Keywords: cylindrical vector; rotational doppler; doppler effect; direction ... See more keywords
Detection of angular acceleration based on optical rotational Doppler effect.
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DOI: 10.1364/oe.27.015518
Abstract: The angular acceleration of a spinning object can be estimated by probing the object with Laguerre-Gauss (LG) beams and analyzing the rotational Doppler frequency shift of returned signals. The frequency shift is time dependent because… read more here.
Keywords: time; rotational doppler; angular acceleration; detection ... See more keywords
Design and experimental demonstration of Doppler cloak from spatiotemporally modulated metamaterials based on rotational Doppler effect.
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DOI: 10.1364/oe.382700
Abstract: Recently, spatiotemporally modulated metamaterial has been theoretically demonstrated for the design of Doppler cloak, a technique used to cloak the motion of moving objects from the observer by compensating for the Doppler shift. Linear Doppler… read more here.
Keywords: cloak; doppler effect; rotational doppler; doppler ... See more keywords
Rotational Doppler effect detection by LG beams with a nonzero radial index.
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DOI: 10.1364/oe.421705
Abstract: The capability to detect the rotational speed of non-cooperative targets in a long distance is a difficult problem to be solved. In recent years, vortex light provides a feasible solution for the measurement of rotational… read more here.
Keywords: radial index; nonzero radial; doppler effect; rotational doppler ... See more keywords
Fragmental optical vortex for the detection of rotating object based on the rotational Doppler effect.
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DOI: 10.1364/oe.476870
Abstract: Rotational Doppler effect (RDE), as a counterpart of the conventional linear Doppler effect in the rotating frame, has attracted increasing attention in recent years on rotational object detection. Many previous works have investigated the RDE… read more here.
Keywords: optical vortex; vortex; rotational doppler; doppler effect ... See more keywords
Direction-discriminated rotational Doppler velocimetry with circularly polarized vortex beams.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.443022
Abstract: The rotational Doppler effect can be exploited in laser rotational Doppler velocimetry to detect the angular velocity of a moving object. Recently, its vectorial counterpart was revealed, which uses vectorial polarization fields and shows the… read more here.
Keywords: doppler; doppler velocimetry; direction discriminated; rotational doppler ... See more keywords