Her research emphasis is the fundamental physical properties of strongly correlated electronic systems. She is best known for her work on a variety of
superconductors,
magnetic materials, and superconductor/ferromagnet heterostructures. She is also interested in the physics and applications of low-dimensional electronic systems such as graphene and carbon nanotubes. She contributed to the development of a faster technique to produce high-quality graphene. Her experimental techniques include development of various cryogenic scanning probe microscopes for applications to nano-science and technology, as well as superconducting resonator technologies that have been applied to high-resolution studies of
superfluid phase transitions and
Bose–Einstein condensation in helium gas. She also works on exploring properties of topological insulators. She is Professor of
Physics and the
Fletcher Jones Foundation Co-Director of the Kavli Nanoscience Institute at the
California Institute of Technology. Yeh was the first female professor in that department when she joined in 1989. She is currently a Chair Professor at
National Taiwan Normal University. == Awards and recognition ==