In essence, Yam's work centres on developing and testing new photoactive materials. It entails combining components - metal atoms and organic molecules - to discover new properties that absorb or emit light more efficiently.
The larger purpose is to generate renewable energy by capturing more of the spectrum than today's silicon crystal solar cells can, and to create powerful, cost-saving sources of electric light for general use.
"I want to develop materials where you have high-performance properties and can control functions by manipulation of molecular design," Yam says.
"With very robust molecules, it will be possible to do solar energy harvesting and have very bright light emitting diodes (LEDs). You could print such solar cells on flexible substrates and [manufacture] them relatively easily," she adds.
Giving immediacy to the work is the fact that lighting now accounts for roughly 20 per cent of total power consumption around the world. The development of commercially viable organic materials will therefore have a major impact on carbon emissions and the whole energy debate.
Aspects of the research have led Yam to look at chemical processes involving light, such as photosynthesis in plants and natural phosphorescence. Transforming light into energy and vice versa has taken place for perhaps billions of years. The challenge, though, is to create molecules that perform similar functions and which, in known conditions, assemble themselves in the required structures.
"In the natural world, it is done by biosynthesis. But we can learn from nature and create derivatives in the laboratory with modified properties which may perform better. For me, that is the beauty of chemistry and what makes it a very exciting science."
This interest and sense of wonder was first inspired by seeing a rainbow and, as a youngster, wanting to understand how and why, Yam recalls.
Finding answers to today's questions involves