A non-complicated, controllable method of metallic nanoparticle fabrication at low operating light power is proposed. The method is based on laser-induced forward transfer, using a metamaterial absorber as the donor to significantly enhance the photothermal effect and reduce the operating light fluence to 35 mJ/cm(2), which is much lower than that in previous works. A large number of metallic n...

We present a metamaterial that acts as a strongly resonant absorber at terahertz frequencies. Our design consists of a bilayer unit cell which allows for maximization of the absorption through independent tuning of the electrical permittivity and magnetic permeability. An experimental absorptivity of 70% at 1.3 terahertz is demonstrated. We utilize only a single unit cell in the propagation dir...

We propose to use double negative (DNG) metamaterial slabs to build effective super-absorbers and perfect nanodetectors for single divergent sources. We demonstrate by numerical simulations that an absorbing nanoparticle properly placed inside a DNG slab back-covered with a perfect electric conductor or perfect magnetic conductor mirror can absorb up to 100% radiation energy of a single dipole ...

Recent developments in artificially engineered metamaterials have enabled the creation of electromagnetic materials with properties not found in nature. Much work has centered on designing split ring resonators (SRR's) and electrical coupled LC resonators (ELC's) to create bulk mediums with desired effective permittivity and permeability. Recent work has demonstrated the feasibility of developi...

Metamaterial absorber (MMA), as a kind of new-style artificial absorption material, has been extensively researched and discussed. Currently, however, the research focuses mainly on the development and application of the novel structure MMA, and only little work is aimed at the physical mechanism of the MMA. In order to deeply understand the absorption mechanism, in this paper, the numerical si...

In this paper, an incident angle- and polarization-insensitive metamaterial absorber is proposed for X-band applications. A unit cell of the proposed absorber has a square patch at the centre and four circular sectors are rotated around the square patch. The vertically and horizontally symmetric structure of the unit cell enables polarization-insensitivity. The circular sector of the unit cell ...