Rain is normally a solar energy cell’s worst nightmare, but a team of Chinese scientists could make it a tremendous ally. They’ve developed a solar cell with an atom-thick graphene layer that harvests energy from raindrops, making it useful even on the gloomiest days. Water actually sticks to the graphene, creating a sort of natural capacitor — the sharp difference in energy between the graphene’s electrons and the water’s ions produces electricity. The catch is that the current technology isn’t all that efficient. It only converts about 6.5 percent of the energy it gets, which pales in comparison to the 22 percent you see among the world’s better solar panels . If the creators can improve the performance of this graphene-coated cell, though, they could have a dream solution on their hands — you wouldn’t have to live in a consistently sunny part of the world to reduce your dependency on conventional power. Via: Science News Journal Source: Wiley Online Library
An anonymous reader writes “Malware operators have bribed employees of a gaming company to bundle malware with their mobile apps.” Because the app-maker reportedly had a good-faith agreement with China’s biggest antivirus company, the apps were apparently whitelisted without a thorough check, according to Softpedia. They cite a report from Check Point which describes how attackers would later pretend to be shoppers on a popular Chinese site where pictures of the desired items are sent to sellers. “The seller would open the picture on a PC and become infected, ” writes Check Point, “because the Trojan would not be detected, ” and a subsequent request for a refund would deliver the login credentials for the seller’s payment account. “This example illustrates how important it is to avoid third-party stores and to instead at least rely on stores with more reliable security, ” argues Check Point. “But even still, stores like the App Store and Google Play aren’t immune to threats.” Read more of this story at Slashdot. 