Molecular dynamics simulations have shown that the mysteriously high efficiency of polymer LEDs arises from interactions between triplet excitons in their polymer chains, and unpaired electrons in their molecular impurities.
Optics & Photonics
Sep 24, 2020
0
5
In 1952, Alan Turing published a study which described mathematically how systems composed of many living organisms can form rich and diverse arrays of orderly patterns. He proposed that this 'self-organization' arises from ...
General Physics
Aug 7, 2020
0
48
Skyrmions could revolutionise computing exhibiting great potential in the electronic storage of information, and the key to such a breakthrough could be understanding their behaviour under applied currents.
Quantum Physics
Jun 19, 2020
0
55
In solid materials, when an electron changes position without another to fill its place, a positively charged 'hole' can appear which is attracted to the original electron. In more complex situations, the process can even ...
General Physics
Jun 18, 2020
0
4
Simulations have revealed how a "payoff transfer system," rewarding individuals who cooperate the most with their local communities, can improve social benefits.
Social Sciences
Jun 15, 2020
10
2
Over 6,000 languages are currently spoken worldwide, but a substantial minority—well over 5%—are in danger of dying out. It is perhaps surprising that this fraction is no higher, as most models have so far predicted that ...
Social Sciences
Apr 22, 2020
0
4
When large earthquakes occur, seismologists are well aware that subsequent, smaller tremors are likely to take place afterwards in the surrounding geographical region. So far, however, few studies have explored how the similarity ...
Earth Sciences
Mar 12, 2020
0
8
Widely studied in many different fields, 'nonlinear' systems can display excessively dramatic responses when the forces which cause them to vibrate are changed. Some of these systems are sensitive to changes in the very parameters ...
General Physics
Feb 25, 2020
0
8
It is now technically possible to hold groups of atoms at temperatures that are only a few hundredths of a degree above absolute zero. This so-called 'ultracold gas' loaded in an optical lattice is an extremely powerful platform ...
Quantum Physics
Feb 5, 2020
0
16
The name 'quantum dots' is given to particles of semiconducting materials that are so tiny—a few nanometres in diameter—that they no longer behave quite like ordinary, macroscopic matter. Thanks to their quantum-like ...
Condensed Matter
Jan 15, 2020
0
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