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Science News for July 23, 2023


Metropolitan quantum teleportation reaches Hertz rate

Researchers achieved metropolitan quantum teleportation at a rate of 7.1 qubits per second, surpassing the classical limit and paving the way for future applications of quantum internet. The breakthrough was made possible by developing a fully running feedback system and high-performance photon detectors.

Introducing the carbon neutrality capacity index: a revolutionary model for evaluating global carbon sink contributions

A new model, the Carbon Neutrality Capacity Index (CNCI), evaluates contributions from various carbon sinks, including rock weathering and vegetation. The study reveals that Guizhou has a significantly higher CNCI than China's average, with regions like Libo and Pingtang showing surpluses.

SourceChinese Society for Environmental Sciences·JournalEnvironmental Science and Ecotechnology·TypeExperimental study·DateJul 23, 2023

A general methodology to measure the LHCE of solid materials

Researchers have developed a general methodology to measure light-to-heat conversion efficiency (LHCE) of solid materials. The PEE method simulates laser heating with electric heating and accurately calculates LHCE for various organic and inorganic materials, offering a robust alternative to existing colloidal solutions-based methods.

Does staying informed help us cooperate?

A new game theory model developed at ISTA finds that both information and ignorance can lead to cooperative outcomes in changing environments. The model, based on stochastic games and algebra, quantifies the benefits of ignorance in around 80-90% cases, highlighting counter-intuitive instances where it is optimal for cooperation.

SourceInstitute of Science and Technology Austria·JournalNature Communications·TypeComputational simulation/modeling·DateJul 23, 2023

Fabrication of nanoscale photonic crystals with ultrafast laser

Researchers developed a new method for fabricating nanoscale photonic crystals with ultrafast lasers, allowing for precise control over structure dimensions and gaps. The technique enables the creation of three-dimensional complex spatial structures, opening possibilities for applications in optical communication and light manipulation.

How an unlikely amphibian survived its “Judgement Day”

Researchers discovered unprecedented snake venom resistance in caecilians, highlighting the species' ability to evolve under severe selective pressure. The study found that caecilians deployed three distinct biological methods to resist elapid snake venom, including changing receptor shape and deploying an electromagnetic 'weapon'.

SourceUniversity of Queensland·JournalInternational Journal of Molecular Sciences·DateJul 23, 2023

A whole new dimension for 3D printing

The new method creates complex 3D shapes in seconds by applying heat to pre-folded flat sheets with origami patterns. This innovation has the potential to mitigate issues with traditional 3D printing, such as material wastage and long print times, and can be used in various fields like fashion, disaster recovery, and more.

SourceUniversity of Tokyo·JournalACM Transactions on Graphics·TypeExperimental study·DateJul 23, 2023

On-chip infrared circular polarization detector with ultrahigh discrimination

Researchers design a silent state enhanced on-chip infrared circular polarization detector with an ultrahigh circular polarization discrimination ability. The device sets an optoelectronic silent state, suppressing noise and allowing for high sensitivity to light ellipticity change.