Liquidmetal is an interesting material developed by a company called Liquidmetal Technology. I won't pretend I understand the details, but the key to takeaway here is that Apple has a patent agreement with Liquidmetal meaning we could see this used in future Apple devices.
Apple could use Liquidmetal to make extremely robust phones, even making them airtight and waterproof. And, Apple being Apple, this new material will probably be used to make stunning-looking devices. Watch this video: