So far, physicists have primarily studied topological phases in conservatively coupled systems. These are systems with dynamics that do not dissipate and a phase space that does not shrink over time. They are in stark contrast ...
Ever since the late 19th century, physicists have known about a counterintuitive property of some electric circuits called negative resistance. Typically, increasing the voltage in a circuit causes the electric current to ...
(Phys.org)—Dissipation and decoherence are typically considered harmful to solar cell efficiency, but in a new paper scientists have shown that these effects paradoxically make the exciton lifetime in semiconducting carbon ...
(Phys.org) —It was another interesting week as a team of physicists from the U.S., Italy and the U.K. designed a zero-friction quantum engine, showing an example of a quantum engine that if built would be "super-adiabatic"—an ...
(Phys.org) —By using voltage-generated stress to switch between two magnetic states, researchers have designed a new non-volatile memory with extremely high energy efficiency—about two orders of magnitude higher than ...
(Phys.org) —Researchers have demonstrated a new carbon nanotube (CNT)-based logic device that consumes just 0.1 nanowatts (nW) in its static ON and OFF states, representing the lowest reported value by 3 orders of magnitude ...
(PhysOrg.com) -- When generating entanglement between two objects, physicists typically try to minimize the objects’ interactions with the environment, since this interaction causes decoherence. But contrary to this ...
(PhysOrg.com) -- "Silicon based logic devices may run out of steam soon because as devices get smaller, they run into different problems," Laurens Molenkamp tells PhysOrg.com. Molenkamp is a physics professor at Universität ...
(PhysOrg.com) -- In the past decade, regenerative braking systems have become increasingly popular, recovering energy that would otherwise be lost through braking. However, another energy recovery mechanism that is still ...
A new study from Columbia Engineering and Harvard identified the critical physiological importance of suitable temperatures for butterfly wings to function properly, and discovered that the insects exquisitely regulate their ...
Plants & Animals
Jan 28, 2020
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