When a light beam pulls an object toward the source, known as a tractor beam, it has become a subject of great interest due to its potential applications in nanotechnology, quantum technology, and biology. Studies of optical pulling force on gold particles with a size comparable to or larger than the operating wavelength are extremely rare. This paper proposes an approach to generate optical pulling force on gold Mie objects with a length of 2000 nm, much larger than the operating wavelength, ranging approximately from 720 to 830 nm. The proposed structure can facilitate pulling force on two different shapes—cylindrical and ellipsoidal, and these forces have been studied under various conditions. The emergence of such pulling force has been explained by physical parameters such as the Poynting vector, surface current density, and electric and magnetic field profile, as these collectively determine the pushing or pulling behavior of the gold particle by governing how the gold–germanium–aluminum environment shapes local field confinement, resonance phases, and electromagnetic momentum flow to control whether the particle scatters energy forward or backward. The proposed approach may offer a new way to perform optical manipulation of plasmonic objects without using costly materials.
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