$UPtrend Pennies$

[PennyMann]

Here's a 2012 blog about top MEMs companies. Please let me know if this is what you meant.

http://electroiq.com/blog/2013/04/top-30-mems-companies-of-2012/

Here's a Sep 2013 Forbes article on graphene companies.

http://www.forbes.com/sites/tomkonrad/2013/09/18/graphene-stock-investing-what-the-pros-think/

Here's an iHub board that may also help with graphene picks.

http://investorshub.advfn.com/The-Graphene-Graphite-and-Carbon-Nanotube-Research-Board-24137/

Your question of finding "good" tickers is subjective. Do you mean good ticker charts, companies with some fundamentals, promos, or something else?