42 citations · 149 across the 12 of their papers we have counts for
14 papers
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…
Single-peak and narrow-band mid-infrared thermal emitters driven by mirror-coupled plasmonic quasi-BIC metasurfaces
Sen Yang, Mingze He, Chuchuan Hong +4
Wavelength-selective thermal emitters (WS-EMs) hold considerable appeal due to the scarcity of cost-effective, narrow-band sources in the mid-to-long-wave infrared spectrum. WS-EMs…
Plasmonic dielectric antennas for hybrid optical nanotweezing and optothermoelectric manipulation of single nanosized extracellular vesicles
Chuchuan Hong, Ikjun Hong, Yuxi Jiang +1
We present an experimental demonstration of near-field optical trapping and dynamic manipulation of a single extracellular vesicle using a plasmonic dielectric nanoantenna that sup…
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…
Merging toroidal dipole bound states in the continuum without up-down symmetry in Lieb lattice metasurfaces
Guodong Zhu, Sen Yang, Justus C. Ndukaife
The significance of bound states in the continuum (BICs) lies in their potential for theoretically infinite quality factors. However, their actual quality factors are limited by im…
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…
Towards rapid extracellular vesicles colorimetric detection using optofluidics-enhanced color-changing optical metasurface
Chuchuan Hong, Ikjun Hong, Sen Yang +1
Efficient transportation and delivery of analytes to the surface of optical sensors are crucial for overcoming limitations in diffusion-limited transport and analyte sensing. In th…
Scalable trapping of single nanosized extracellular vesicles using plasmonics
Chuchuan Hong, Justus C. Ndukaife
Heterogeneous nanoscale particles released by cells known as extracellular vesicles (EVs) are actively investigated for early disease detection1, monitoring2, and advanced therapeu…
Optofluidic transport and particle trapping using an all-dielectric quasi-BIC metasurface
Sen Yang, Justus C. Ndukaife
Manipulating fluids by light at the nanoscale has been a long-sought-after goal for lab-on-a-chip applications. Plasmonic heating has been demonstrated to control microfluidic dyna…
Roadmap for Optical Tweezers
Giovanni Volpe, Onofrio M. Maragò, Halina Rubinzstein-Dunlop +80
Optical tweezers are tools made of light that enable contactless pushing, trapping, and manipulation of objects ranging from atoms to space light sails. Since the pioneering work b…
Multiplexed long-range electrohydrodynamic transport and nano-optical trapping with cascaded bowtie photonic crystal nanobeams
Sen Yang, Joshua A. Allen, Chuchuan Hong +3
Photonic crystal cavities with bowtie defects that combine ultra-high Q and ultra-low mode volume are theoretically studied for low-power nanoscale optical trapping. By harnessing…