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Science News Archive 2019 - Page 368


Page 368 of 486

Rise of religion pre-dates Incas at Lake Titicaca

Researchers have uncovered ancient ritual offerings near Lake Titicaca that pre-date the arrival of the Incas by several centuries. The findings suggest a more complex and ambitious spiritual system among the Tiwanaku people, who developed in the area between 500-1,100 AD.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateApr 1, 2019

Climate change threat to dolphins' survival

A recent study found that climate change can have long-lasting negative impacts on dolphin populations, with a 12% decrease in survival rate following a heatwave in Shark Bay, Western Australia. The researchers also observed fewer births among female dolphins, which persisted for at least six years.

SourceUniversity of Zurich·JournalCurrent Biology·DateApr 1, 2019

How to ice-proof the next generation of aircraft

Scientists have discovered a new method to control icing on next-generation aircraft using plasma actuators. The technology can transfer heat locally while mixing well with incoming airflow, preventing stress on composite materials. Researchers tested three configurations of actuators in high-speed cameras and infrared thermal imaging.

SourceAmerican Institute of Physics·JournalPhysics of Fluids·DateApr 1, 2019

Skyrmions could provide next generation data storage

Researchers at the University of Birmingham have developed a way to combine multiple skyrmions into 'skyrmion bags' that can store and transfer data more efficiently. This breakthrough technology has the potential to increase data storage capacity, reduce power consumption, and pave the way for next-generation computing devices.

SourceUniversity of Birmingham·JournalNature Physics·DateApr 1, 2019

Same properties, lower cost

Researchers at Tohoku University have developed a technique to transform copper into a material that mimics properties of gold and silver. The new medium, made of copper nanoparticles, has applications in the production of electronic devices and is suitable for environmentally friendly printing technologies.

SourceTohoku University·JournalScientific Reports·DateApr 1, 2019

Odd reaction creates a stir in the lab

Researchers at Rice University discovered that PTFE stir bars react with chemicals in an unexpected way, affecting the modification of nanotubes. This discovery highlights the importance of choosing inert materials in laboratory settings.

SourceRice University·JournalACS Omega·DateMar 29, 2019

Quantum optical cooling of nanoparticles

Physicians at the University of Vienna have developed a novel method to cool nanoparticles using quantum optics, enabling unprecedented control over particle motion in ultra-high vacuum. The approach, inspired by atomic physics, harnesses scattered light from an optical tweezer to effectively cool particles' kinetic energy.

SourceUniversity of Vienna·JournalPhysical Review Letters·DateMar 29, 2019

Engineering for high-speed devices

A team at the University of Delaware has engineered a silicon-graphene device that can transmit radiofrequency waves in less than a picosecond, enabling faster communications. The device combines the benefits of silicon and graphene, with improved carrier mobility and electrical properties.

SourceUniversity of Delaware·JournalACS Applied Electronic Materials·DateMar 29, 2019

Hollow structures in 3D

Scientists at University of Freiburg create three-dimensional hollow structures in quartz glass using Glassomer process. This breakthrough enables the production of optical waveguides and microfluidic channels, previously difficult to manufacture due to glass's chemical resistance.

SourceUniversity of Freiburg·JournalNature Communications·DateMar 29, 2019

New methodology enable solid state lighting to measure and self-adjust based on conditions

Researchers have developed a new methodology that allows solid state lighting to measure and self-adjust its spectral power distribution based on environmental conditions. This enables the system to maintain consistency and stability over time, making it suitable for applications requiring precise light spectra.

Quantum physics and origami for the ultimate get-well card

Researchers use metal nanoparticles to detect single target molecules in paper-based tests, overcoming limitations of conventional dyes. The results enable ultra-sensitive diagnostics with limitless applications in medicine, forensics, and environmental safety.

SourceFrontiers·JournalFrontiers in Bioengineering and Biotechnology·DateMar 29, 2019

Scientists develop way to perform supercomputer simulations of the heart on cellphones

Researchers from Rochester Institute of Technology and Georgia Tech developed a new approach to simulate the heart's electrophysiology in real-time, allowing doctors to better discuss life-threatening heart conditions with patients. This method uses WebGL code to repurpose graphics cards for faster scientific computing applications.

SourceRochester Institute of Technology·JournalScience Advances·DateMar 29, 2019