Researchers from the Technical University of Denmark demonstrated a new nanotechnology-based printing technique that produces long-lasting color images on plastic at resolutions up to 127,000 dots per inch, many times more detailed than traditional laser printers. The system uses a laser to alter the structure of nanoscale structures on the plastic material. (A nanometer is one-billionth of a meter; a human hair is around 60,000 nanometers in diameter.) The nanoprinting technique could also lead to new kinds of 3D displays or invisible watermarks. From New Scientist:
The surface of the plastic is shaped so that it has lots of tiny pillars, one roughly every 200 nanometers. A thin film of the element germanium is then spread over the plastic. Heat from a laser melts the germanium on each pillar, morphing its shape and thickness. As a result, it reflects a specific color. The coating protects the shapes of the newly carved nanostructures.
Resonant laser printing of structural colors on high-index dielectric metasurfaces (ScienceAdvances)
Oculus Quest, the so-called ‘iPod of VR’, is now shipping.
‘If you suspect political bias caused such an action to be taken against you, share your story with President Trump.’
Marginalized Native American communities throughout the United States could have better access to high-speed internet if the Federal Communications Commission (FCC) decides to allow tribes to use the Educational Broadband Services (EBS) spectrum for services like telemedicine, transmitting medical records electronically, or an online high school.
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