Research in ME, BME, NucE?

<p>Hi everyone,</p>

<p>I'm an undergraduate ME student, but originally wanted to go into either nuclear engineering or biomedical engineering. I decided on ME since it seemed more flexible in the engineering fields and my school didn't offer the other two.</p>

<p>If I wanted to attend graduate school, what should I focus my research on during undergraduate? For example, if I solely focused on biomedical, would I still be able to apply for a nuclear engineering graduate school? I ask this because there really isn't a nuclear program at my school, and no professors really have any research going on in those fields.</p>