https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/3322353Edit ImageSaveSaveEditCropCustom TextPhotonic band-gap crystal. Ames Laboratory developed the first model of a photonic band-gap crystal. Such crystals have the ability to control and filter light similar to the way semiconductor control electricity. Original public domain image from FlickrMorePublic DomainFree CCO U.S. Government image for Personal and Business useInfoView CC0 LicenseJPEGSmall 926 x 1047 px | 300 dpiFree DownloadPhotonic band-gap crystal. Ames Laboratory developed the first model of a photonic band-gap crystal. Such crystals have the ability to control and filter light similar to the way semiconductor control electricity. Original public domain image from FlickrMore