**6. Conclusion**

We have introduced the importance of plasmonic metasurface for applications in optical trapping, nano-tweezers and tiny particle manipulation, by demonstrating a nanoparticle trapping approach that utilizes a thermoplasmonic nanohole metasurface. The application of laser illumination and a.c. electric field results in new physical effects such as electrothermoplasmonic flow and a.c. electroosmosis that can work in concert with optical gradient forces to enable to new advanced features in micro and nanoparticle manipulation. The recent reports in the literature as articulated in this section shows that the intrinsic loss in plasmonic systems is not always detrimental but could work in synergy with the high electric field enhancement to realize advanced lab-on-a-chip devices in nanomanufacturing, nanophotonics, life science and quantum optics.
