<p>Look at the literature in your field for answers. Are you interested in nanotechnology - [Home</a> : Nature Nanotechnology](<a href=“http://www.nature.com/nnano/index.html]Home”>Nature Nanotechnology) or [ACS</a> Publications - Cookie absent](<a href=“http://pubs.acs.org/journal/nalefd]ACS”>http://pubs.acs.org/journal/nalefd) are both great journals. Look at the labs that produce the articles you find most interesting. Can you envision yourself doing that work? Contact the authors of the papers to introduce yourself and ask questions.</p>