For smartphone users, battery life has been a troublesome issue. Unwilling to bring mobile power, you may find yourself busy looking for the nearest charging station. This will make you suddenly miss the functional machine era. How to charge easily and quickly? Dutch designer Pauline van Dogen gives his own answer. For many people, mobile power has become an essential tool, especially if smartphones are unable to change batteries, but this is often an additional burden. Why not integrate the charging device into the clothes? And further, if it can use solar energy, is not it better? Through a series of experimental clothes, Pauline van Dogen tried to incorporate the beauty of technology into fashion. On her clothes, the solar panels were placed on the shoulders or on both sides, hidden under leather or cloth. Depending on the circumstances, the battery can be flexible or rigid, the number can be 46 or 72 pieces. Directly under the sun an hour, these batteries can charge 50% of the phone. Put the solar charger on the body Of course, it is not easy to convince people to put this technology on their body. "This is a real challenge," van Dogen told Wired. In her view, this challenge is a common problem facing wearable devices. Wearable devices not only consider the technical feasibility, but more importantly, it should be something that people are willing to wear on the body, and this is the hardest part. Solar technology is more difficult for people to accept. Now, the only way to combine solar technology with fashion is to use it for decorations. "You can look down the solar panels at home and it has some structural support that you can not do with your clothes," says Gertjan Jongerden, a physicist working with van Dogen. "Ideal wearable solar cells , Should be part of the fabric, which exists only in the lab and is not a marketable product. " So at this stage, van Dogen's design is more of an experiment. It shows the possibility of the future, but it is difficult to become a real product. However, she believes that wearable solar cells are promising, as long as the right technology is used and the proper investment is made. "It's still a long road," she said. "But I think with a lot of research and development we can get a salesable product."