Optical Trapping of Nanoparticles Through Artificially-Engineered Flat Materials

Ehsan, Aqsa; Zubair, Muhammad; Tauqeer, Tauseef; Mehmood, Muhammad Qasim

doi:10.1109/ibcast47879.2020.9044566

Cited by 1 publication

(1 citation statement)

References 24 publications

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“…Gradient force acts along the vertical and horizontal directions and should be greater when a particle is trapped, as against scattering force acting along propagation axis (z-axis). An optical tweezer that traps nanoparticles in the visible regime is presented numerically in [162], where the optical force was calculated on a 100 nm radius gold nanosphere. The particle was located at the focus of this metalens, resulting in a force of 30.8 pN, 24.7 pN, and 21.0 pN in the directions of three principal axes, respectively.…”

Section: Polarization Conversion Polarization Control Of Emmentioning

confidence: 99%

The Dawn of Metadevices: From Contemporary Designs to Exotic Applications

Ijaz

Rana

Ahmad

et al. 2022

Adv Devices Instrum

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In recent years, metamaterials and metasurfaces have prospered in many fields of “science and technology,” covering the entire electromagnetic spectrum. Metasurface devices constituting of a set arrangement of meta-atoms translate into modern-day miniaturized means to achieve planar, ultrathin, multifunctional electromagnetic (EM) systems. Metasurfaces are ideal candidates to develop next-generation, lightweight, and fabrication-friendly optical components as they impart local and space-variant phase changes on incident EM waves, providing more comprehensive control over EM wavefronts. This attribute has been instrumental in realizing a variety of special beams for high-capacity data transmission and superresolution imaging. Furthermore, from the perspective of efficiency, the below-par performance of previously explored plasmonic-based metasurfaces can be enhanced by employing all-dielectric metasurfaces. All-dielectric metasurfaces with high refractive indices have high resonance quality factors, low cost, and CMOS fabrication compatibility. 2D materials-based metasurface design has succeeded in further reducing the device footprints for better integration in optoelectronic devices. The conventional, time- and computation-intensive EM solvers have largely been assisted by artificial intelligence techniques, resulting in quicker metasurface designing. This review focuses on the state-of-the-art meta-devices employed for wavefront manipulations of optical waves. The design variants and applications of metasurfaces constitute a prolific field for future research to meet existing challenges and make the devices more suitable for real-time applications.

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Section: Polarization Conversion Polarization Control Of Emmentioning

confidence: 99%