Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
In this paper, we proposed and numerically verified a perfect absorber composed of unstructured nature hyperbolic material α-MoO layers on top of photonic crystal (PhC) layers and reflecting mirrors, which can attain nearly perfect absorption of 99.94% at 24.7 terahertz (THz) in Transverse Magnetic (TM) mode. We demonstrate that the absorption efficacy can be regulated by adjusting structural parameters, meeting the requirements of the absorption spectrum spanning from the microwave to the infrared (IR) region. This study presents an exemplary application of natural hyperbolic materials in the realm of perfect absorption, offering significant potential for use in sensing and detection.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OE.537238 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A temperature-controlled switching terahertz perfect absorption device based on a VO phase change metamaterial.
Dalton Trans
September 2025
School of Mathematics and Science, Southwest University of Science and Technology, Mianyang 621010, China.
In this paper, we design and study a temperature-controlled switchable terahertz perfect absorber based on vanadium dioxide (VO), which shows excellent multi-band performance, high sensitivity and intelligent thermal management. The device consists of four layers in a metal-dielectric composite structure, which are a metal reflection layer, silicon dielectric layer, VO phase change layer and top metal pattern layer from bottom to top. The simulation results show that when VO is in the low-temperature insulation state, the absorption rate of the device is as high as 99.
View Article and Find Full Text PDFGambling Carnot Engine.
Phys Rev Lett
August 2025
ICTP-The Abdus Salam International Centre for Theoretical Physics, Strada Costiera 11, 34151 Trieste, Italy.
We propose a theoretical model for a colloidal heat engine driven by a feedback protocol that is able to fully convert the net heat absorbed by the hot bath into extracted work. The feedback protocol, inspired by gambling strategies, executes a sudden quench at zero work cost when the particle position satisfies a specific first-passage condition. As a result, the engine enhances both power and efficiency with respect to a standard Carnot cycle, surpassing Carnot's efficiency at maximum power.
View Article and Find Full Text PDFANN assisted design of broadband near perfect metasurface absorbers exploiting InAs nanorods for visible light harvesting.
Sci Rep
August 2025
Department of Electronics and Communication Engineering, Faculty of Engineering, University of Kurdistan, Sanandaj, 66177, Kurdistan, Iran.
This research focuses on the design of broadband, polarization-insensitive absorber layers based on all-dielectric metasurfaces for use across the entire visible light spectrum, i.e., 400-800 nm, for applications in solar cells and photovoltaic devices.
View Article and Find Full Text PDFColloidal Nanoparticle Metasurfaces: Principles, Fabrication, and Applications.
ACS Nano
September 2025
State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China.
Metasurfaces, a class of two-dimensional metamaterials, exhibit notable optical properties, making them attractive candidates for applications in fields such as the cloaking, biophotonics, and imaging. The realization of these applications is dependent on advancements in fabrication techniques. Conventional "top-down" lithography often faces limitations, such as polycrystallinity and surface roughness.
View Article and Find Full Text PDFTriple-band highly sensitive terahertz metamaterial absorber for biomedical sensing applications.
PLoS One
August 2025
Department of Electrical and Electronic Engineering, Mymensingh Engineering College, Mymensingh, Bangladesh.
Due to the growing interest in metamaterials for biomedical applications, this study presents the design and analysis of a novel, compact, triple-band metamaterial absorber for biological sensing in the terahertz range. The structure, with dimensions of 41 × 41 μm2, exhibits exceptionally high absorption rates above 99% at three distinct resonance frequencies of 1.85, 3.
View Article and Find Full Text PDF