Search results for silicon dioxide

Optics & Photonics Dec 13, 2023

Glassy shell of microscopic algae inspires tiny ultrasound detectors for medical imaging

A multidisciplinary team of researchers from Skoltech has discovered the resonance frequencies of diatom frustules. These intricately structured silicon dioxide shells of single-celled microalgae provide a promising model ...

Bio & Medicine Dec 12, 2023

Carbon nanotubes have progressed toward energy and health applications, but misconceptions remain

The increasing use of carbon nanotubes (CNTs)—and a proposal in the European Union to ban the entire class of materials—highlights the need for an updated and standardized approach to assess human and environmental impacts ...

Nanophysics Dec 8, 2023

Researchers safely integrate fragile 2D materials into devices, opening a path to unique electronic properties

Two-dimensional materials, which are only a few atoms thick, can exhibit some incredible properties, such as the ability to carry electric charge extremely efficiently, which could boost the performance of next-generation ...

Planetary Sciences Nov 22, 2023

Webb identifies methane in an exoplanet's atmosphere

The James Webb Space Telescope observed the exoplanet WASP-80 b as it passed in front of and behind its host star, revealing spectra indicative of an atmosphere containing methane gas and water vapor. While water vapor has ...

Analytical Chemistry Nov 21, 2023

Discovery of structural regularity hidden in silica glass

Glass—whether used to insulate our homes or as the screens in our computers and smartphones—is a fundamental material. Yet, despite its long usage throughout human history, the disordered structure of its atomic configuration ...

Nanomaterials Nov 14, 2023

New water treatment method can generate green energy

Researchers from ICIQ in Spain have designed micromotors that move around on their own to purify wastewater. The process creates ammonia, which can serve as a green energy source. Now, an AI method developed at the University ...

Polymers Nov 13, 2023

New technique can capture or reuse CO2 as a chemical source for the production of sustainable plastics

A team led by chemists at the University of Liège has developed a new polyurethane production technique using CO2 to create new types of easily recyclable plastics. The study, published in the Journal of the American Chemistry ...

Nanophysics Sep 28, 2023

Using Einstein's tea leaf paradox to study nanofluids

Stirring can allow the dispersion of substances evenly in liquid. Einstein's tea leaf paradox is a concept that shows how tea leaves can concentrate in a doughnut shape through a secondary flow effect during stirring. In ...

Nanophysics Sep 25, 2023

Scientists develop nanomaterials using a bottom-up approach

Scientists from the Friedrich Schiller University Jena and the Friedrich Alexander University Erlangen-Nuremberg, both Germany, have successfully developed nanomaterials using a so-called bottom-up approach. As reported in ...

General Physics Sep 13, 2023

Scientists develop a mathematical model to optimize the design of thermal protection systems for spacecraft

Mechanics from St Petersburg University have developed a mathematical model that takes into account non-equilibrium processes occurring at high velocities in the gas flow and on the surface. This model can be used for detailed ...

page 3 from 40