Optical antennas, analogues of microwave and radiowave antennas, are a new concept in physical optics 1. They are an enabling technology for manipulating and controlling optical radiation at ...

Researchers have developed arrays of tiny nano-antennas that can enable sensing of molecules that resonate in the infrared spectrum. The semiconductor antenna arrays allow long-wavelength light to ...

This is equivalent to an array of 64 × 64 antenna units, or pixels, with each pixel covering 9 × 9µm. The antennas are made from a strong, high-index contrast dielectric grating and all work at the ...

The researchers fabricated a 64×64 "pixel" array of identical square antennas, each 9 microns (0.009mm) on the side. The entire array was formed out of silicon, with connecting silicon "wires ...

In the nanoscale version of the Yagi Uda antenna, the conducting strips are replaced by an array of gold nanorods. The nanorods are aligned in such a way that incoming light manages to trigger ...

The figure shows how much light (PLE, photoluminescence excitation) the individual pyramid-shaped antenna emits at various wavelengths (colours) of light in comparison to the antennas in the array.

Antenna-on-a-chip rips the light fantastic Date: November 16, 2012 ... "You have an array of pixels and you can change the transmission of each pixel at a very high speed," he said.

In recent years, Sengupta’s lab has designed antenna arrays that help engineers make strides toward peering through matter, boosting communications in canyons of skyscrapers, putting a medical lab on ...