Tiny is SO in these days. Nanotechnology, technology that is small enough to fit inside a computer chip, is a field that is attracting lots of young technologists. Wharton MBA graduates Brian Smith and Irene Susantio -- otherwise known as Team Solixia -- are putting tiny into action in health care. Their “Hot Dot” cancer treatment is the size of a small protein fragment yet 20 times more powerful in diagnosing and treating cancer than current methods. Brian and Irene have big plans for their business, which received a grant from the National Cancer Institute in August, 2010, as they spread the word about the small wonders of nanotechnology.…