The translator couldn’t decide on the artist’s name but I think it is spelled out as Lena Yolka, a Russian architect who likes to play with whatever she can get her hands on, it seems. And she really likes her Dremel. So after creating the hollow hearts, she thought a few holes would make for great texture, which it does. The crowning touch, though, was adding the tiny LED inside. That certainly makes it eye-catching.
Lena hasn’t had a recent entry in her LiveJournal and I couldn’t find other links to her work but you can admire her holey work and other pieces here until I or someone else dig up more on this creative soul.