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Millions of people have been tested for the novel coronavirus, most using a kit that relies on the polymerase chain reaction (PCR). This sensitive method amplifies SARS-CoV-2 RNA from patient swabs so that tiny amounts of ...
A palette of colors on a silver plate: That is what the world's first color photograph looks like. It was taken by French physicist Edmond Becquerel in 1848. His process was empirical, never explained, and quickly abandoned. ...
High-repetition-rate pulsed lasers serve a wide range of applications, from optical communications to microwave photonics and beyond. Generating trains of ultrashort optical pulses commonly involves locking phases of longitudinal ...
Photonic cavities are an essential part of many modern optical devices, from laser pointers to microwave ovens. Just as we can store water in a tank and create standing waves on the surface of the water, we can confine light ...
Plasmon enhanced spectroscopy allows scientists to reach single molecule sensitivity and a lateral resolution even down to sub-molecular resolution. A major challenge for it to become a user-friendly analytical tool however ...
Silicon photonics are known as a key technology for modern optical communications at the near infrared wavelength-band, i.e., 1.31/1.55 μm. Currently silicon photonics researchers have attempted to extend the technology to ...
Near-infrared spectroscopy provides absorption spectrum unique to substances so that discrimination of gas species becomes possible. Miniaturization of spectrometers is thus required to realize compact gas sensors for monitoring ...
By blending paints in their palette, artists can create a broad spectrum of colors with subtly different hues. However, scientists who wish to create a similar range of structural colors, like those found on butterfly wings, ...
Engineers at the University of California San Diego and the University of California Berkeley have created light-based technology that can detect biological substances with a molecular mass more than two orders of magnitude ...
Researchers from the MPSD and the Lawrence Berkeley National Laboratory (LBNL) in the United States have discovered a significant new fundamental kind of quantum electronic oscillation, or plasmon, in atomically thin materials. ...
