Results 21 to 30 of about 855,719 (327)
Mitigation of GNSS Time Synchronization Attacks in a Multicorrelator Receiver
IEEE Access, 2022 Global navigation satellite systems (GNSSs) are widely used in various fields to provide high-precision timing. However, their low signal power and open signal structure render GNSS receivers vulnerable to time synchronization attacks (TSAs).
Xiangyong Shang +4 more
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Three-dimensional Doppler, polarization-gradient, and magneto-optical forces for atoms and molecules with dark states [PDF]
, 2016 We theoretically investigate the damping and trapping forces in a three-dimensional magneto-optical trap (MOT), by numerically solving the optical Bloch equations. We focus on the case where there are dark states because the atom is driven on a ”type-II"
Devlin, J, Tarbutt, M
core +4 more sources
New Journal of Physics, 2023 The study of an optical beam interacting with material structures is a fundamental of nanophotonics. Computational electromagnetic solvers facilitate the rapid calculation of the scattering from material structures with arbitrary geometry and complexity,
J J Kingsley-Smith +1 more
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A Nanoscale Photonic Crystal Cavity Optomechanical System for Ultrasensitive Motion Sensing
Crystals, 2021 Optomechanical nanocavities open a new hybrid platform such that the interaction between an optical cavity and mechanical oscillator can be achieved on a nanophotonic scale.
Ji Xia +5 more
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Cross Diabolo Hollow Notch Nanotweezer for Optical Trapping and Manipulation
IEEE Photonics Journal, 2022 Plasmonic nanotweezer manipulates nanoparticles utilizing extraordinary electric field gradients and field enhancement originated from localized surface plasmon resonance.
Md. Abeed Hasan, Ahmed Zubair
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Tailoring Optical Gradient Force and Optical Scattering and Absorption Force [PDF]
Scientific Reports, 2017 AbstractThe introduction of the concept of gradient force and scattering and absorption force is an important milestone in optical trapping. However the profiles of these forces are usually unknown, even for standard setups. Here, we successfully calculated them analytically via multipole expansion and numerically via Mie theory and fast Fourier ...
Du, Junjie +7 more
openaire +3 more sources
Wideband and high-efficiency spin-locked achromatic meta-device
Nanophotonics, 2022 Achromatic devices present unique capabilities in efficient manipulation of waves and have wide applications in imaging and communication systems. However, the research of achromatic devices is limited by the narrow bandwidth, low efficiency as well as ...
Cui Xingshuo +7 more
doaj +1 more source
Dual Optomechanical Cavities for All-Optical Actuation and Sensing of Mechanical Motion
IEEE Photonics Journal, 2022 Cavity optomechanics in the photonic devices enables a light-matter interaction in the chip-scale systems via the optical force driven mechanical motion.
Xia Ji +4 more
doaj +1 more source
Optica, 2020 Progress in light scattering engineering made it feasible to develop optical tweezers allowing capture, hold, and controllable displacement of submicrometer-size particles and biological structures. However, the momentum conservation law imposes a fundamental restriction on the optical pressure to be repulsive in paraxial fields, which severely limits ...
Lepeshov, Sergey, Krasnok, Alex
openaire +2 more sources
Nature Photonics, 2011 Theoretical analysis suggests that there exists an optical attractive force capable of “pulling” microparticles towards a light source. This backwards force is generated by using interference to optimize the scattering of light in the forwards direction.
Chen, Jun +3 more
openaire +2 more sources