Infrared Polarization Photodetection and Imaging of Optoelectronic Devices• Built an infrared photodetector measurement system to characterize the optoelectronic properties of novel anisotropic materials• Designed and fabricated an absorption-boosting resonant metal-insulator-metal (MIM) metasurface grating to increase mid-wave infrared absorption and responsivity of the photodetector• Built an infrared imaging system to achieve the multispectral, high-resolution polarization imaging of the photodetector• Studied optical spectroscopy of BaTiS3 by polarization-resolved FTIRMechanical Flexibility and Orthogonal Photoluminescence (PL) of Double Helical Semiconductor• Synthesized an inorganic double helical van der Waals semiconductor SnIP• Demonstrated the ultralow Young’s modulus via nanomechanical bending and Brillouin scattering spectroscopy• Discovered the ultrahigh flexibility and deformability by bending SnIP using a micromanipulated probe• Revealed the origin of its mechanical properties by density-functional theory (DFT) calculation• Demonstrated polytypic stacking orders by DFT calculations and high-resolution X-Ray diffraction• Discovered orthogonal PL emission of SnIP Artificial Neuronal Devices Based on Charge-Density-Wave (CDW) Materials• Built TaS2-based stochastic artificial neuron devices to investigate its stochastic oscillation and to emulate the stochasticity in biological neural spiking• Build a 3-synapse-1-neuron network by integrating memristors as artificial synapses with the TaS2 oscillator to emulate the biological neuron behaviors• Enabled emulation of the response of mammals’ auditory neurons to acoustic stimuli

• Developed Python code to simulate the diffraction efficiency• Model complex relationships between performance and structure of waveguide with multivariate polynomial regression• Simulated the far field display of AR diffractive waveguide within 3D eye box volume• Developed optical metrology, data processing, and software automation for AR diffractive waveguide and projector• Provided the solid waveguide and projector information for designer, quality control personnel, and fabricants