Related Experiment Video
Updated: May 11, 2026

13:44
Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
Structured metal film as a perfect absorber
Xiang Xiong1, Shang-Chi Jiang, Yu-Hui Hu
1National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China.
Advanced Materials (Deerfield Beach, Fla.)
|May 11, 2013
Summary
Researchers developed a novel four-tined fish-spear-like resonator (FFR) using two-photon polymerization. This new absorber achieves over 90% absorbance, showing promise for advanced applications requiring thermal and electrical conductivity.
Area of Science:
- Nanotechnology
- Materials Science
- Optics
Background:
- Developing efficient absorbers is crucial for various optical and electronic applications.
- Existing absorber designs often face limitations in conductivity and fabrication complexity.
Purpose of the Study:
- To introduce a novel four-tined fish-spear-like resonator (FFR) as a high-performance absorber.
- To investigate the fabrication and performance characteristics of the FFR.
Main Methods:
- Utilizing the two-photon polymerization process for precise micro/nanofabrication.
- Experimental characterization of the FFR's absorbance and resonant properties.
Main Results:
- Achieved experimental absorbance exceeding 90%.
- Observed resonance phenomena localized within the inter-tine spaces.
- Fabricated structure exhibits continuous metallic thin film, ensuring excellent thermo- and electroconductivity.
Conclusions:
- The four-tined fish-spear-like resonator (FFR) represents a significant advancement in absorber technology.
- The FFR's high absorbance and inherent conductivity make it suitable for demanding applications.
- Two-photon polymerization enables the intricate design and fabrication of such advanced resonant structures.
More Related Videos
Related Concept Videos
Radiation: Applications
The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
The average...
The average...
Metal-Semiconductor Junctions
The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The semiconductor's...
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The semiconductor's...
Biasing of Metal-Semiconductor Junctions
Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...

