We develop novel spectroscopic measurement techniques to probe key physicochemical properties of advanced materials (i.e., 2D…) that will enable future technologies to move past conventional digital computing. Determining the fundamental processes of carriers, excitons, and related charge migration phenomenon are key aspects of our project. Additionally, we study alternative-state variables or information carriers, such as spin, phase, valley, etc., which will provide the foundation for lower-power electronics, optical switching, non-volatile memory, neuromorphic computing, and other technologies that are not possible with present material systems. Visible, infrared, and terahertz measurement systems, both in the linear and non-linear regime, enable detection of scattering, absorption, emission, and magnetism in these materials.
The Raman facility is unique. Multiple laser lines, two spectrometers including a triple grating, cryostats, magnetic field, and an atomic force microscope combined instrument, provide the basis for the measurement capabilities. Through our extensive in-house engineering and synthesis capabilities, we are able to uniquely synthesize the nanomaterials, fine tune their properties and isolate specific parameters for study. This cycle of production, isolation, and characterization is fundamental to a meaningful, detailed analysis.
Multidisciplinary collaborations, both those inside of NIST and beyond, are crucial to the group's success. By working in research teams, we learn more and contribute more fully to the physics of nanotechnology. NIST teams with which we actively collaborate include Carbon Nanotube Metrology and Graphene.