Flat lenses with a twist
Overlaying two film layers patterned with a nanoscale array can manipulate the propagation of light to create a powerful ultrathin lens.
Optics & Photonics
Jul 30, 2019
0
8
News tagged with propagation
Measuring light and vacuum fluctuations from a time flow perspective
Some of the greatest unanswered questions about the nature of the universe are related to light, the vacuum (i.e. space where neither matter nor radiation exists), and their relationship with time. In the past, physicists ...
Discrete energy levels without confinement – a new quantum trick
Nanostructures can be designed such a way that the quantum confinement allows only certain electron energy levels. Researchers from IMDEA Nanociencia, UAM and ICMM-CSIC have, for the first time, observed a discrete pattern ...
Quantum Physics
May 9, 2019
0
186
Crack propagation is asymmetric in polar materials
The ICN2 Oxide Nanophysics Group, led by ICREA Prof. Gustau Catalán, has published in Physical Review Letters how, due to flexoelectricity, cracks in ferroelectrics (switchable polar materials) propagate more easily in the ...
Materials Science
Apr 26, 2019
0
9
Predicting electricity demands
Research published in the International Journal of Energy Technology and Policy shows how a neural network can be trained with a genetic algorithm to forecasting short-term demands on electricity load. Chawalit Jeenanunta ...
Machine learning & AI
Apr 17, 2019
1
6
The hipster effect: Why anti-conformists always end up looking the same
You've probably seen this effect—perhaps you are a victim of it. You feel alienated from mainstream culture and want to make a statement that you are not part of it. You think about wearing different clothes, experimenting ...
General Physics
Mar 1, 2019
7
615
A new framework to predict spatiotemporal signal propagation in complex networks
Past studies have found that a variety of complex networks, from biological systems to social media networks, can exhibit universal topological characteristics. These universal characteristics, however, do not always translate ...
Scientists simulate a black hole in a water tank
Certain phenomena that occur in black holes but cannot be directly observed in astronomic investigations can be studied by means of a laboratory simulation. This is possible due to a peculiar analogy between processes that ...
General Physics
Feb 7, 2019
4
4206
Discovery of topological LC circuits transporting EM waves without backscattering
NIMS has succeeded in fabricating topological LC circuits arranged in a honeycomb pattern where electromagnetic (EM) waves can propagate without backscattering, even when pathways turn sharply. These circuits may be suitable ...
General Physics
Dec 28, 2018
0
26
Scientists unlock structural secrets of whale baleen
Chinese scientists working with other researchers have for the first time uncovered the underlying mechanisms of the hierarchical structure of whale baleen, with an eye toward developing advanced engineered materials. In ...
Materials Science
Nov 26, 2018
0
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