Color

  • Researchers from the Chinese Academy of Sciences have developed a smart bandage that changes color to signal either drug-resistant or drug-sensitive bacteria. It can then be triggered to release antibiotics or other chemicals to kill off the bugs.
  • Science
    Thousands of years ago, the ancient Egyptians created a blue pigment which they used in their depictions of gods and royalty. Derived from calcium copper silicate, the substance is now known as Egyptian blue – and it could be used to both save power and generate electricity.
  • ​If you've ever tried using eye drops, then you'll know that a great deal of the medication simply ends up being flushed from your eye by flowing tears. Drug-dispensing contact lenses are an alternative, with an experimental new one changing color to verify that it's done its job.
  • Medical X-ray scans have long been stuck in the black-and-white era. Now Mars Bioimaging has developed a bioimaging scanner that can produce full color, three dimensional images of bones, lipids, and soft tissue, thanks to a sensor chip developed at CERN for use in the Large Hadron Collider.
  • Contact lenses may be useful for restoring vision to short- or long-sighted people, but not so much at correcting color blindness. Now researchers from the University of Birmingham have developed a contact lens that can help correct certain kinds of color blindness, thanks to a safe, low cost dye.
  • ​Materials that fold themselves are usually triggered by light, which works well for building simple 3D shapes like cubes and pyramids. By varying the color of the light and the "hinges," a new method can make more complex structures by triggering the material to fold in a specific order.
  • Science
    ​Electron microscopes are useful for creating a topographical map of cell structures, but grayscale images are produced. Researchers have developed a new method for producing electron micrographs with several colors, highlighting different components and details that normally wouldn’t be visible.
  • Engineers have created a new type of color filter which could help to produce sharper and brighter photos in low light conditions. The new filter, which could appear in smartphones within three years, allows three times more light to reach an image sensor than conventional filters.
  • An intriguing photo projection system uses only black images and a prism to project full-color imagery. A Dartmouth College and Disney Research Zürich study could result in future systems that dynamically trade off color fidelity, efficiency, and resolution to create full-color projections.
  • Entrepreneurs Denmark have another step towards improving the general usability of 3D printers with the Diamond Hotend, a single 3D extruder unit that can mix and melt three colors of filaments together and produce items in a rainbow of colors.
  • Science
    A skin-like membrane progressively changes color when stretched by tiny amounts. Its creators say that it is easy to manufacture and could have applications in security, entertainment, and structural monitoring.
  • Science
    If the object is quite large, or if a lot of them are being made, paint can add considerably to its weight and/or production costs. With that in mind, researchers have created a new lightweight, low-cost coloring technology for both rough and smooth surfaces.