Optical vortex-induced forward mass transfer: Manifestation of helical trajectory of optical vortex

TL;DR

This paper introduces a novel optical vortex-induced forward mass transfer technique that creates micron-scale spin jets in high-viscosity materials, enabling high-resolution printing and potential needleless drug delivery.

Contribution

It demonstrates the use of optical vortex fields to induce helical trajectories and form micron-scale spin jets in ultrahigh viscosity materials, surpassing traditional patterning methods.

Findings

Formation of micron-scale spin jets in 4 Pas viscosity material.

Helical trajectory of optical vortex manifests in mass transfer.

Potential applications in high-resolution printed circuits and drug delivery.

Abstract

The orbital angular momentum of an optical vortex field is found to twist high viscosity donor material to form a micron-scale 'spin jet'. This unique phenomenon manifests the helical trajectory of the optical vortex. Going beyond both the conventional ink jet and laser induced forward mass transfer (LIFT) patterning technologies, it also offers the formation and ejection of a micron-scale 'spin jet' of the donor material even with an ultrahigh viscosity of 4 Pas. This optical vortex laser induced forward mass transfer (OV-LIFT) patterning technique will enable the development of next generation printed photonic/electric/spintronic circuits formed of ultrahigh viscosity donor dots containing functional nanoparticles, such as quantum dots, metallic particles and magnetic ferrite particles, with ultrahigh spatial resolution. It can also potentially explore a completely new needleless drug injection.