A5010443785- Metamaterials and Metasurfaces Applications
- Advanced Antenna and Metasurface Technologies
- Photonic Crystals and Applications
- Plasmonic and Surface Plasmon Research
- Liquid Crystal Research Advancements
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced biosensing and bioanalysis techniques
- Orbital Angular Momentum in Optics
- Advanced Optical Imaging Technologies
- Optical Wireless Communication Technologies
- Random lasers and scattering media
- Antenna Design and Analysis
- Nanofabrication and Lithography Techniques
- Near-Field Optical Microscopy
- Photoacoustic and Ultrasonic Imaging
- Thermography and Photoacoustic Techniques
- Biosensors and Analytical Detection
- Nanoplatforms for cancer theranostics
- Nanomaterials and Printing Technologies
- Optical Coatings and Gratings
- Virtual Reality Applications and Impacts
- Transition Metal Oxide Nanomaterials
- Quantum optics and atomic interactions
- Remote Sensing in Agriculture
- Photonic and Optical Devices
Pohang University of Science and Technology
2021-2025
Pohang Iron and Steel (South Korea)
2022
Abstract Optical metamaterials have presented an innovative method of manipulating light. Hyperbolic extremely high anisotropy with a hyperbolic dispersion relation. They are able to support high- k modes and exhibit density states which produce distinctive properties that been exploited in various applications, such as super-resolution imaging, negative refraction, enhanced emission control. Here, state-of-the-art reviewed, starting from the fundamental principles applications artificially...
A single-step printable platform for ultraviolet (UV) metasurfaces is introduced to overcome both the scarcity of low-loss UV materials and manufacturing limitations high cost low throughput. By dispersing zirconium dioxide (ZrO2) nanoparticles in a UV-curable resin, ZrO2 nanoparticle-embedded-resin (nano-PER) developed as material which has refractive index extinction coefficient from near-UV deep-UV. In nano-PER, resin enables direct pattern transfer increase composite while maintaining...
Abstract Metasurface holography, the reconstruction of holographic images by modulating spatial amplitude and phase light using metasurfaces, has emerged as a next‐generation display technology. However, conventional fabrication techniques used to realize metaholograms are limited their small patterning areas, high manufacturing costs, low throughput, which hinder practical use. Herein, efficiency hologram one‐step nanomanufacturing method with titanium dioxide nanoparticle‐embedded‐resin,...
Metasurfaces have opened the door to next-generation optical devices due their ability dramatically modulate electromagnetic waves at will using periodically arranged nanostructures. However, metasurfaces typically static responses with fixed geometries of nanostructures, which poses challenges for implementing transition technology by replacing conventional components. To solve this problem, liquid crystals (LCs) been actively employed designing tunable adjustable birefringent in real time....
Abstract The spin Hall effect of light (SHEL) is the microscopic splitting into two circular polarizations at optical interface along perpendicular direction. With advent metamaterials/metasurfaces and their fast‐developing applications, SHEL has been garnering significant scientific interest. Here, principle recent developments in research reviewed. A theoretical description provided, including formalism general techniques. Also, studies on applications are extensively reviewed, enhancement...
Plasmonic nanoparticle clusters promise to support unique engineered electromagnetic responses at optical frequencies, realizing a new concept of devices for nanophotonic applications. However, the technological challenges associated with fabrication three-dimensional programmed compositions remain unresolved. Here, we present novel strategy heterogeneous structures that enable efficient near-field coupling between plasmonic modes gold nanoparticles and various other nanomaterials via simple...
The high refractive indexes and low optical losses of dielectrics are preferred for designing highly efficient metasurfaces with unprecedented wavefront control such as near-unity numerical aperture metalenses wide-angle beam spreading. Regardless intuitive material selections, the correlation between metasurface performance properties has not been clearly defined. Notwithstanding unclear correlation, intensity ratio manipulated light to input beam, often called efficiency, is an important...
Obtaining single-molecular-level fingerprints of biomolecules and electron-transfer dynamic imaging in living cells are critically demanded postgenomic life sciences medicine. However, the possible solution called plasmonic resonance energy transfer (PRET) spectroscopy remains challenging due to fixed scattering spectrum a nanoparticle limited multiplexing. Here, multiplexed metasurfaces-driven PRET hyperspectral imaging, probe biological light-matter interactions, is reported. Pixelated...
Metasurfaces that can manipulate light in the spatial domain via local modes are an ultrathin alternative to conventional optical systems. However, achieving large-angle modulation with such metasurfaces presents significant challenges as diminished efficiency. To address this, concept of metagrating has been introduced, facilitating development devices a high numerical aperture or wide field view. Nonlocal metasurfaces, which possess nonlocal and control both temporal domains, encounter...
Abstract Tunable metasurfaces can replace conventional bulky active optical modules to realize practical flat devices such as lenses, LiDAR, holography, and augmented reality. However, tunable have generally been limited switching between two distinct states. Here, we present liquid crystal (LC) integrated chiral metasurfaces, of which the metahologram intensity be adjusted continuously fully ‘on’ ‘off’ The metasurface consists a gap-shifted split ring resonator (SRR), exhibits spin angular...
Reconfigurable light absorbers have attracted much attention by providing additional optical responses and expanding the number of degrees freedom in security applications. Fabry-Pèrot based on phase change materials with tunable properties can be implemented over large scales without need for steps such as lithography, while exhibiting reconfigurable responses. However, a fundamental limitation widely used vanadium dioxide germanium-antimony-tellurium-based chalcogenide glasses is that they...
Abstract Optical‐resolution photoacoustic microscopy (OR‐PAM) enables both high‐resolution and high‐contrast imaging of optical chromophores ranging from biological tissues to inorganic samples. The lateral spatial resolution OR‐PAM depends on its configuration is primarily determined by the numerical aperture objective lens. This study demonstrates a novel, lens‐free, shear‐force system using tapered fiber, serving as proof‐of‐concept toward implementation super‐resolution, near‐field...
Abstract We describe a rapid and simple method to create Ag nanostructures by using direct mechanical patterning of ionic ink coating under gentle pressure, then thermal annealing reduce the metallic layer. The liquid-phase is easily obtained spin-coating that has appropriate concentration can be either printed or imprinted on desired substrate soft elastomer mold, reduced nanostructure subsequent annealing. More specifically, we present two methods: transfer printing nanoimprinting. In...
Metamolecule clusters support various unique types of artificial electromagnetism at optical frequencies. However, the technological challenges regarding freeform fabrication freestanding metamolecule with programmed geometries and multiple compositions remain unresolved. Here, freeform, raspberry-like (RMM) fibers based on directional guidance a femtoliter meniscus are presented, resulting in evaporative co-assembly silica nanoparticles gold aid 3D nanoprinting. This method offers facile...
Metasurfaces A metasurface-driven hyperspectral imaging method via multiplexed plasmonic resonance energy transfer is presented by Inhee Choi, Junsuk Rho, Luke P. Lee, and co-workers in article number 2300229. The metasurface chip designed for label-free multifunctional quantitative biological sensing such as reactive oxygen species secretion from the living cells. platform can significantly contribute to molecular diagnosis, real-time secretome monitoring, cellular imaging.