6 papers · 1 filter
Experimental Investigation of Surface Passivation Chemistries for Optical Nanotweezers
Maxwell T. Ugwu, Kewei Li, Abayomi Opadele +2
Nanotweezers are actively investigated as a powerful means to reversibly trap and characterize nanoparticles with profound biological and environmental importance. To ensure that t…
Engineering thermal emission with enhanced emissivity and quality factor using bound states in the continuum and electromagnetically-induced absorption
Guodong Zhu, Ikjun Hong, Theodore Anyika +5
Metal-based thermal metasurfaces exhibit stable spectral characteristics under temperature fluctuations, in contrast to more traditional gray- and near black-bodies, as well as som…
Rapid Trapping and Label-free Characterization of Single Nanoscale Extracellular Vesicles and Nanoparticles in Solution
Ikjun Hong, Chuchuan Hong, Theodore Anyika +5
Achieving high-throughput, comprehensive analysis of single nanoparticles to determine their size, shape, and composition is essential for understanding particle heterogeneity with…
Recent Advances in Nanophotonics for Optofluidics
Sen Yang, Chuchuan Hong, Guodong Zhu +3
Optofluidics is dedicated to achieving integrated control of particle and fluid motion, particularly on the micrometer scale, by utilizing light to direct fluid flow and particle m…
Optically assisted diffusophoretic tweezers using resonant plasmonic bowtie nano-antennas
Theodore Anyika, Ikjun Hong, Justus Ndukaife
Plasmonic antennas, leveraging localized surface plasmon resonance (LSPR), hold significant promise for efficiently trapping nanoscale particles at low power levels. However, their…
Mirror-enhanced plasmonic nanoaperture for ultrahigh optical force generation with minimal heat generation
Theodore Anyika, Ikjun Hong, Justus C. Ndukaife
Double Nanohole Plasmonic Tweezers (DNH) have revolutionized particle trapping capabilities, enabling trapping of nanoscale particles well beyond the diffraction limit. This advanc…