Researchers have successfully developed a tunable infrared filter made from graphene, which would allow to change the frequency of a filter simply by controlled mechanical deformation of the filter (i.e., graphene origami), and not by replacing the substance on the goggles used to filter a particular spectrum of colors.
A new paper not only puts a period to a long-lasting debate about the origins of direct current in graphene illuminated by high-frequency radiation but also sets the stage for the development of high-sensitivity terahertz detectors.
Nanoscale-level imaging of living cells has become a reality in the past few years using transmission electron microscopy and sealed sample holders that keep cells alive in a liquid environment. But do the high-resolution images obtained using these tools truly reflect the structures and functions of cells?
Neutron scattering has revealed, in real time, the fundamental mechanisms behind the conversion of sunlight into energy in hybrid perovskite materials. A better understanding of this behavior will enable manufacturers to design solar cells with increased efficiency.
Engineers have developed an LC-TEM device that uses multiple windows and patterned features to explore the impacts of high-energy electron bombardment on nanoparticles and sensitive biological samples.