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Search results for plasmon

Optics & Photonics Jul 15, 2021

Tiny, injectable sensors could monitor brain activity without surgery or implants

Researchers have developed nanoscale sensors that could be injected into the body to noninvasively track brain activity using light. The approach could one day offer a new way to study the brain or assess patients' brain ...

Optics & Photonics Jul 05, 2021

Piezoelectric microelectromechanical system-based optical metasurfaces

Optical metasurfaces can unprecedently regulate versatile wavefronts at the subwavelength scale. Most well-established optical metasurfaces are, however, static and feature well-defined optical responses that are determined ...

Materials Science Jun 24, 2021

Light-harvesting nanoparticle catalysts show promise in quest for renewable carbon-based fuels

Researchers report that small quantities of useful molecules such as hydrocarbons are produced when carbon dioxide and water react in the presence of light and a silver nanoparticle catalyst. Their validation study—made ...

General Physics Jun 23, 2021

The first observation of the superscattering effect of metamaterials

Entering an invisible doorway to catch a train at King's Cross station in London is a renowned fictional scene from the Harry Potter series. In recent decades, physicists have been trying to produce a similar effect by focusing ...

Optics & Photonics Jun 15, 2021

Bending light for safer driving; invisibility cloaks to come?

Optical cloaking allows objects to be hidden in plain sight or to become invisible by guiding light around anything placed inside the cloak. While cloaking has been popularized in fiction, like in the "Harry Potter" books, ...

Space Exploration Jun 03, 2021

Space bubble experiment could lead to more effective early cancer screenings

Researchers studying how bubbles form and function are sending a fully automated, self-contained experiment into space.

Bio & Medicine May 25, 2021

Silver attacks bacteria, gets 'consumed'

For millennia, silver has been utilized for its antimicrobial and antibacterial properties. Although its use as a disinfectant is widely known, the effects of silver's interaction with bacteria on the silver itself are not ...

Nanophysics May 21, 2021

Green light on gold atoms: Nano-antennas make nano-defects visible to the naked eye

Because individual atoms or molecules are 100 to 1000 times smaller than the wavelength of visible light, it is notoriously difficult to collect information about their dynamics, especially when they are embedded within larger ...

Materials Science May 20, 2021

Out of thick air: Transforming carbon dioxide into light-emitting carbon

A team of researchers at the University of Ottawa has found a way to use visible light to transform carbon dioxide gas, or CO2, into solid carbon forms that emit light. This development creates a new, low-energy CO2 reduction ...

Optics & Photonics May 12, 2021

Better integrated circuits with glide symmetry

Surface plasmon polaritons (SPPs) are highly localized surface waves on the interface between metal and dielectric in the optical frequency band. SPPs do not naturally exist in the microwave and terahertz frequencies, so ...

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