I have been trying to apply to summer REU (research experience for undergraduates) programs, in particular in material science and nanoscience. Last year I didn't get into any of the four I applied to. This year I applied to another six, and so far I have received one denial. I'm beginning to worry if there's something that is preventing me from being accepted into one of these REUs. I have a relatively high GPA (3.8 in math and 3.8 in physics). However, I do not have any experience with lab work. I believe my admission essays for the programs were great. I had my professors from my Physics and math classes write letters of recommendation for me. But I just don't understand why other people would get in and I don't. Does anyone have any tips that you can share about applying to these REUs? Thanks.