Corrupted filenames on flash drive?

I have a 512MB USB flash drive. Usually I have no problems with it, but today when I was copying files onto it, I decided to cancel the copy before it finished. I then left to go do something, during which time the power went out at my house. When I got back and restarted my computer, some of the filenames on the drive are now corrupt. For instance, one of them looks like "█A»Gü9ÉÑτü│" Some of the corrupted names are folders, some are files. I cannot access any of them though. If I try to open one of the corrupted files or folders, it says "Cannot open the specified file." I have run ChkDsk, and it says it found and repaired errors, but the files are still corrupted. What should I do? My OSs are Windows XP Media Center and Windows XP Professional. Any help is appreciated.