A5049553885- Metamaterials and Metasurfaces Applications
- Topological Materials and Phenomena
- Advanced Antenna and Metasurface Technologies
- Antenna Design and Analysis
- Biosensors and Analytical Detection
- Quantum Mechanics and Non-Hermitian Physics
- Acoustic Wave Phenomena Research
- Photonic Crystals and Applications
- Photonic and Optical Devices
- Mosquito-borne diseases and control
- Innovative Microfluidic and Catalytic Techniques Innovation
- Microfluidic and Capillary Electrophoresis Applications
- 3D Printing in Biomedical Research
- Advanced Biosensing Techniques and Applications
- Aerodynamics and Acoustics in Jet Flows
- Noise Effects and Management
- Plasmonic and Surface Plasmon Research
Hong Kong University of Science and Technology
2017-2020
University of Hong Kong
2017-2020
Technische Universität Braunschweig
2019
Pontificia Universidad Católica de Chile
2019
We demonstrate a ventilated metamaterial absorber operating at low frequency (<500 Hz). With only two layers of absorption units, high-efficiency (>90%) has been achieved in both simulations and experiments. This under the ventilation condition originates from weak coupling identical split tube resonators constituting absorber, which leads to hybridization degenerate eigenmodes breaks upper limit 50% for conventional transmissive symmetric acoustic absorbers. The can also be...
Topological characteristics of energy bands, such as Dirac/Weyl nodes, have attracted substantial interest in condensed matter systems well classical wave systems. Among these the type-II Dirac point is a nodal degeneracy with tilted conical dispersion, leading to peculiar crossing dispersion constant plane. Such points recently been found electronic materials. The analogous topological feature photonic remains theoretical curiosity, experimental realization expected be challenging. Here, we...
Abstract Point‐of‐care detection for pathogen is of critical need wide epidemic warning and medical diagnosis. In this work, we have designed developed a fully portable integrated microchip based real‐time polymerase chain reaction machine rapid detection. The instrument consists three functional components including heating, optical, electrical modules, which are into compact box. consumable material replaceable to meet various needs. Consequently, demonstrated the outstanding performance...
The result of molecular diagnostic and detection greatly dependent on the quality integrity isolated nucleic acid. In this work, we developed an automated miniaturized acid extraction device based magnetic beads method, consisting four components including a sample processing disc its associated rotary power output mechanism, pipetting module, magnet module external central controller to enable customizable robust preparation. extracted using 293T cells were verified real-time polymerase...
We have theoretically and experimentally studied resonance-induced hyperbolic metasurfaces proved that they offer an efficient way to introduce Fano-resonance decrease the Q-factor in our system order create isofrequency contours (IFCs) along two orthogonal directions. A metasurface with a continuous topological transition for such IFCs has been designed implemented. In particular, independent collimation frequencies can be found correspond As consequence, we demonstrated function as...
In condensed systems, Weyl quasiparticles have a massless nature and exhibit various relativistic chiral phenomena such as Klein tunneling, anomaly, Fermi arc surface states. However, in photonic points (WPs) are protected by the D2d symmetry, often leading to multiple WPs at same energy level, which makes generating chirality-related effects challenging. To overcome this hinderance, perturbation that breaks mirror symmetry metallic saddle structure was introduced. This effectively separates...
In momentum space, the nodal loop is regarded as a ring-shaped band degeneracy and classified into type-I type-II configurations depending on positive/negative dispersions of degenerating bands. Here, we experimentally observe new class in photonic structure, employing an artificially designed bilayer metasurface. Such degeneracy, termed type-III loop, formed by crossing between resonant flat positively dispersive protected mirror symmetry <mml:math...
We introduce a kind of acoustic metamaterial, which can greatly enhance the transmission at subwavelength ranges and keep its hyaline air-proof characteristics simultaneously. In contrast to state art, this originally conceived passive metamaterial makes full use resonance glass plates without any complex or expensive materials. provide design decorated window, numerical simulation, experimental demonstrations for analyze underlying physical mechanism. Furthermore, we show that more peaks be...
We study the dispersions of guided modes in continuous uniaxial crystal slab waveguide and engineer their degeneracies through dielectric anisotropy. By switching positivity negativity, we can obtain distinctive nodal types, point line, for lowest degeneracy frequency. The mirror symmetry protections, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="m1"><mml:mrow><mml:msub><mml:mi mathvariant="script">M</mml:mi><mml:mi>x</mml:mi></mml:msub></mml:mrow></mml:math>...