 |
J. Todd Hastings Lighthouse Beacon Foundation Eminent Scholar Professor of Physics (joint appointment) Director, Center for Nanoscale Science and Engineering Contact: todd.hastings@uky.edu |
The Hastings Research Group studies nanoscale materials and devices, particularly magnetic and photonic systems, along with their associated nanomanufacturing technologies. Current efforts are focused on applications in optical sensing, imaging, materials characterization, renewable energy, and unconventional computing.
March 27, 2025
Previous works demonstrated methods to physically probe the magnetization dynamics of PNAs to realize neuromorphic reservoir systems that exhibit chaotic dynamical behavior and high-dimensional nonlinearity. Our research addresses the shortcomings of earlier studies, and present a mixed delay/nondelay embeddings-based PNA reservoir system. Our analysis shows that when these mixed delay/nondelay embeddings are used to train a perceptron at the output layer, our reservoir system outperforms existing PNA-based reservoir systems. This article was first presented in 2024 IEEE International Conference on Rebooting Computing (ICRC). The full article can be found at https://ieeexplore.ieee.org/document/10937021
March 14, 2025
Conventional cameras benefit from an alternative RGBW arrays by responding with higher sensitivity in low light and and low color error. Finding the correct metafilters to enable simultaneous focusing and filtering is examined by new researcher Alex J. Thuringer along with Dr. J. Todd Hastings and Dr. Mansoor A. Sultan in the article, Metasurface color filter arrays with a high efficiency and low color error published in the January 20, 2025 issue of Applied Optics. The full article can be found at https://doi.org/10.1364/AO.541031
July 22, 2024
This article reviews the generation and applications of orbital angular momentum beams in the x-ray and extreme ultraviolet regime. Several recent works that exploit the orbital angular momentum degree of freedom and showcase the potential advantages of using these beams are presented. The full paper can be found at https://iopscience.iop.org/article/10.1088/1361-648X/ad53b3/meta.
