Test for echo: schematic diagram of an object to be imaged (blue blob) and illumination source (concentric circles) inside a randomly shaped cavity. The detector is represented by the two parallel ...

(PhysOrg.com) -- When trying to focus sound waves into as small an area as possible, scientists run into a fundamental limit called the diffraction limit. That is, when sound waves are focused into a ...

At first glance, visible light and nanotechnology seem incompatible because of the diffraction limit, which dictates that features smaller than about half the wavelength of light cannot be resolved ...

Researchers built a silver-grooved chip that channels laser energy into nanometer-spaced peaks, beating the diffraction limit and aiding light-matter studies. (Nanowerk News) Physics is full of pesky ...

Ten years ago, classical optics was but a sleepy backwater of modern physics, a place to while away the hours in the autumn of your career. Then all hell broke loose with the development of ...

A novel imaging technique used for the first time on a ground-based telescope has helped a UCLA-led team of astronomers to achieve the sharpest-ever measurement of a star's surrounding disk, revealing ...

(Nanowerk News) Reporting their work in ACS Applied Materials & Interfaces ("Optically Patternable Metamaterial Below Diffraction Limit"), researchers in Korea report an optically patternable ...