207 DuPont Lab
Dr. Law's research group focuses on creating new materials and heterostructures to control and manipulate light in the mid- to far-infrared and THz wavelength ranges. These structures are grown using molecular beam epitaxy (MBE), enabling precise control over material composition and layer thickness. Material classes currently being investigated include doped semiconductors, such as Si:InAs, for infrared applications and topological insulators, such as Bi2Se3, for longer-wavelength applications. By adjusting the material composition, or by layering these materials with others, the Law group can create tunable, low loss metamaterials plasmonic materials with interesting properties, such as squeezing light into subwavelength volumes or exhibiting a negative index of refraction. These properties can then be leveraged to create useful devices, such as lenses which allow imaging below the diffraction limit of light, non-blackbody thermal emission, or enhanced sensitivity detec tors and emitters. These devices have applications in fields such as bioimaging, thermophotovoltaics, gas and chemical sensing, and many others.