The terahertz range is generally defined as the portion of the electromagnetic spectrum that
lies between 100 GHz and 10 THz. It is situated above the microwave range, and below the …

Diffractive optical elements are well known for being not only flat but also lightweight, and
are characterised by low attenuation. In different spectral ranges, they provide better …

Natural sand-based silicon dioxide (NSSD) is a common material of multidimensional
combat backgrounds (CBs) such as dry leaves/wood, green leaves, tree bark-woodland CB; …

Advances in terahertz technology rely on the combination of novel materials and designs. As
new devices are demonstrated to address the terahertz gap, the ability to perform high …

Camouflage scientists have been suggested synthetic dyes, pigment, nano materials for
designing of camouflage textiles in multidimensional spectrum. There is still lacking for …

Currently, optics such as dielectric lenses and curved reflector dishes are commonplace in
terahertz laboratories, as their functionality is of fundamental importance to the majority of …

In this paper, artificial opals, made of 300-nm-diameter nanoporous SiO_2 globules by
sedimentation of a colloidal suspension and annealing at different temperatures in the range …

Zero refractive index materials behave electromagnetically as single points despite the finite
dimensions because a propagating electromagnetic wave passes with an infinite phase …

Refraction in materials is a fundamental phenomenon in optics and is a factor in the
manipulation of light, such as wavefront shaping and beam control. However, conventional …

The applications of terahertz (THz) waves have been increasing rapidly in various fields,
and there is a strong demand for efficient, robust, and low-cost optical components working …