Optical Nanotweezers Based on All-Dielectric Resonant Structures

Optical tweezers are a valuable tool for manipulating micro- and nano-objects due to their noncontact and nondestructive nature. These features render them highly valuable for applications such as biological detection and precision measurement. Although current optical nanotweezers technologies like surface plasmon polariton tweezers have surpassed the optical diffraction limit and enabled nanoscale manipulation of particles, they are limited by issues such as complexities in optical systems and substantial thermal effects, which hinder their practical applications. In recent years, advancements in nanomanufacturing technologies have spurred notable attention in the optical resonance effects of all-dielectric micro- and nanostructures. These structures exhibit high electromagnetic field enhancement, low loss, and minimal heat generation, opening up new possibilities for breakthroughs in optical nanotweezers technologies. This paper provides a review of recent research progress in optical nanotweezers based on all-dielectric micro- and nanostructures, highlights the features and applications of these optical tweezers with various dielectric resonance modes, and provides an overview and prospects for the development of this field.