Remember when you didn't consider climbing trees a chore? Treebot doesn't -- but then, it wasn't programmed to know boredom. The robot was designed by a team at The Chinese University of Hong Kong for the express purpose of shimmying up trees autonomously, figuring out the best route up a trunk using built-in touch sensors. The 'bot's body is designed like an inchworm, expanding and contracting as it works it way up -- unlike other climbers we've seen. Treebot can carry up to 3.7 pounds as it inches along, opening up the possibility of using the machine to prune hard to reach leaves. It can also shuffle up a variety of different plants, including bamboo stems, as evidenced by the sped-up video after the break. Unwieldy foliage, you've been put on notice.
As you may know, crafting a katana is a delicate process that involves carefully constructing a razor-sharp high-carbon edge around a soft shock-absorbent core. One day though, smiths and forging fires could be replaced by electrode-wielding mad-scientists, with the technology to selectively harden and soften metal at will. At least that's what we envisioned when we read about Jörg Weißmüller's breakthrough research in the field of nanomaterials. The German scientist discovered that by placing precious metals in acid he could create tiny ducts through corrosion. Once those channels are flooded with a conductive liquid, electrical currents can be used to harden the material and, if you change your mind about the brittle results, the effect can easily be reversed to make it soft again. The tech could eventually lead to self-healing vehicle armor or scratch-resistant cellphones -- but, really, we just want to zap our way to a high-quality samurai sword. Physorg
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