Sum-frequency generation (SFG) is a powerful vibrational spectroscopy that can selectively probe molecular structures at surfaces and interfaces, but ...

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 ...

Imaging technology has transformed how we observe the universe—from mapping distant galaxies with radio telescope arrays to unlocking microscopic details inside living cells. Yet despite decades of ...

Schematic of the planar device for producing dark- field speckle patterns. (Image from USTC). Credit: Douguo Zhang et al. Researchers from the University of Science and Technology of China (USTC) have ...

Abstract: The current fundamental limits such as Shockley–Queisser, ergodic light-trapping limit, diffraction-limited imaging (Abbe diffraction limit), noise in detection, reciprocal optical systems ...

ISM is a super-resolution imaging technique that enhances resolution beyond the diffraction limit through pixel reassignment and deconvolution. However, the practical implementation of ISM requires ...