News - Summaries of some content found on cosmosmagazine.com
Copyright exception: Reporting the news on a website is permitted.
- Non-photosynthesising plant discovered,
which gets energy from the roots of fungi rather than sunlight.
Called "Sciaphila sugimotoi" and
related to the already-known mycoheterotrophic plant S. nana
- We are running out of Phosphorus. More than 70% of the global
phosphorus supply comes from a single location.
- The human power of smell is just as good as a dog's.
The idea dogs' noses are 10,000 more powerful than humans' is misconceived
- A stretchable nanostructured surface produces shifting holograms
Holographic communications are still a way off, but this may
be a step in the right direction.
Through detailed calculations, Argarwal's team established how much an
image moved and shifted when the flexible polymer material was stretched.
Using this data, they developed a surface that could appear to switch
between 2 or 3 images, depending on how it expanded or retracted.
The concept builds on previous research led by Ritesh Agarwal, at the
University of Pennsylvania, in which gold nano-rods were embedded in an
ultra-thin, flimsy surface to generate a holographic image.
- A new advance uses structural colour for laser printing without ink.
Many brightly coloured things in nature - from butterfly wings to peacock feathers - get their vivid hues from structural colouring at the microscopic level.
Structural colour is a kind of colouring that occurs through the interaction of light with materials that have patterns on a tiny scale, which reflect light to make some wavelengths brighter and others darker. Because of this, the colour - unlike colour based on dye or ink - should never fade.
Scientists have discovered how to print structural colours with a laser printer.