Radiative cooling is a passive cooling strategy for lowering the temperature of an object without consuming energy or emitting pollution. However, this cooling method becomes ineffective when heat accumulates continuously in an enclosed space, such as a stationary vehicle exposed to direct sunlight. Researchers propose a Janus thermal emitter that acts as a selective emitter on the top side and a broadband emitter on the bottom side. This design effectively draws heat from an inner space and the surface, because the bottom side can absorb thermal input in a broad spectral range, while the top side emits heat into space without disturbing ambient radiation.
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Researchers announced the creation of a new type of meta-DNA structures that will open up the fields of optoelectronics (including information storage and encryption) as well as synthetic biology.
Researchers report new experimental evidence of a collective behavior of electrons to form quasiparticles called anyons. Anyons have characteristics not seen in other subatomic particles, including exhibiting fractional charge and fractional statistics that maintain a 'memory' of their interactions with other quasiparticles by inducing quantum mechanical phase changes.
Physicists have developed a minuscule instrument able to detect extremely faint magnetic fields. At the heart of the superconducting quantum interference device are two atomically thin layers of graphene, which the researchers combined with boron nitride.