Among the almost limitless use cases for commercial-scale graphene is filtration. MIT engineers say they've now developed a scalable production process for precisely tailored graphene filtration membranes, which could see action in desalination, biological separation and other applications.
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When an implant is introduced to the body, there's a chance that its surface will be colonized by bacteria. In some cases, such infections require the implant to be removed. It's recently been discovered, however, that coating implants with graphene flakes could help keep that from happening.
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Researchers have come up with a “fire alarm wallpaper” which can detect a house fire, but also sound an alarm and even help to restrict the spread of fire. It's made from hydroxyapatite, which occurs in bone and teeth. However, the wallpaper’s real smarts are down to an ink-based on graphene oxide.
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With current techniques for the mass production of graphene requiring large amounts of organic solvents that aren't great for the environment, the announcement of a more environmentally friendly and cost effective technique for the large-scale production of the wonder material comes as good news.
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Graphene, the "wonder material" composed of one-atom-thick sheets of linked carbon atoms, now has yet another potential application. Led by Prof. Jiaxing Huang at Northwestern University, scientists have used it to create a hair dye that's far less harmful than regular dyes.
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Graphene hogs all the headlines about two-dimensional materials, but it might just be the beginning. Researchers have now isolated a 2D form of the soft metal gallium, dubbed "gallenene," which could make for efficient, thin metal contacts in electronic devices.
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Another day, another new use for graphene. This two-dimensional form of carbon is strong, flexible and a great conductor. Now the overachieving wonder material has been put to work in the garden, as Australian researchers have used it as an effective slow-release carrier for fertilizer.
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We’re so used to having devices powered by lithium-ion batteries that it’s hard to imagine using anything else, but there are plenty of alternatives. The latest, an aqueous hybrid capacitor, is stable, safe and boasts high energy and power densities, recharging in as little as 20 seconds.
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Energy is all around us – we just need to work out how to tap into it. Now a team from MIT has developed a device called a thermal resonator, which could essentially pull electricity out of thin air by taking advantage of gradual ambient temperature changes over the course of the day.
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Water filtration may be one of graphene's most directly beneficial capabilities. Now scientists have demonstrated how effective a specially-designed form of graphene can be at purifying water with a pretty challenging test: the filter made water from Sydney Harbour safe to drink in one step.
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