A5101559638- Terahertz technology and applications
- Metamaterials and Metasurfaces Applications
- Plasmonic and Surface Plasmon Research
- Advanced biosensing and bioanalysis techniques
- Millimeter-Wave Propagation and Modeling
- Energy Harvesting in Wireless Networks
- Photonic and Optical Devices
West Anhui University
2022-2024
Zaozhuang University
2021
Jiangsu University
2021
Biosensors based on terahertz (THz) metasurfaces have recently attracted widespread attention. However, few been reported so far because it is a challenge to achieve ultrasensitive multidimensional detection in the THz spectrum. Here, we propose novel biosensor that consists of and metal oxide semiconductor-like structure (MOSLS), which patterned graphene-polyimide-perovskite. We varied photoconductivity MOSLS via electrostatic doping effect. The could detect whey protein down concentration...
Although terahertz metasurface-enabled biosensors focus on current research, reports of multidimensional ultra-sensitive detection in the (THz) regime are rare. Here, we present a novel flexible THz biosensor that consists electromagnetic-induced transparency-like metasurfaces and patterned graphene, which is used for plant protein. Based changes frequencies amplitude, proposed could detect protein molecules with 42.3 pg/ml limit. The internal mechanism can be explained by positive impact...
Toroidal dipole resonance can significantly reduce radiation loss of materials, potentially improving sensor sensitivity. Generally, toroidal response is suppressed by electric and magnetic dipoles in natural making it difficult to observe experimentally. However, as 2D metamaterials, metasurfaces weaken the dipole, enhancing response. Here, we propose a new graphene-integrated metasurface an ultra-sensitive chemical sensor, capable qualitative detection chlorothalonil terahertz region, down...
Active and effective control over terahertz (THz) waves is essential for THz applications, the incorporation of dynamic materials into metasurfaces offers opportunities to realize highly efficient manipulation. Here, optically controlled metasurface devices (meta-devices) based on either perovskite or graphene are experimentally demonstrated, each exhibiting ultra-sensitive modulation under extremely low external optical power. We achieve a maximum depth 237.5% in transmission amplitude...
Organic–inorganic hybrid three-dimensional (3D) perovskite materials have emerged as potential candidates for terahertz (THz) modulators. In this study, the metasurface of electromagnetically induced transparency resonance was integrated with 3D to achieve a high-efficiency dynamic THz modulator. The integration achieved by modulating intrinsic optoelectronic properties three wavelengths optical pump and external voltage excitation. maximum modulation depth 466.8 %, flux 11.5 mW/cm2...
The development of terahertz (THz) technology is creating a demand for devices that can modulate THz beams. Here, we propose novel modulator based on patterned graphene/gallium nitride Schottky diodes hybridized with metasurfaces. Ultrasensitive dynamic multidimensional modulation achieved by changing the barrier heterojunction, shifting Fermi level between Dirac point, conduction band and valence graphene via continuous-wave optical illumination or bias voltages. When close to...
It is difficult for nano-scale optical devices to resonate with terahertz waves. By using a nano-discretized metamaterial (NDMM), we converted gap-localized electromagnetic response into spectroscopy. A switch of an electromagnetically induced transparency (EIT) analog acquired by displacement current in NDMMs and strongly dependent on the discretization nanogap. controlling distance nanogap, EIT can be determined, which, turn, linked polarization electric field. If field perpendicular...