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Mostafa Bedewy Receives Frontiers of Materials Award

  • By Jennifer Zheng
  • 21 July 2021

Dr. Mostafa Bedewy was recently selected for the 2022 Frontiers of Materials Award from the Minerals, Metals, and Materials Society. 

The award recognizes top-performing early career professionals who are able to organize a Frontiers of Materials symposium on a hot or emerging technical topic at the TMS Annual Meeting & Exhibition.

Dr. Bedewy is an outstanding researcher, and his work in the fabrication of graphene and related carbon nanomaterials directly on polymers enables the development of flexible, wearable electronic devices such as implantable biomedical sensors and bendable batteries. He has won several awards including the 2020 Outstanding Young Investigator Award from the Institute of Industrial and Systems Engineers’ Manufacturing and Design (IISE M&D) Division and the 2018 Outstanding Young Manufacturing Engineer Award from the Society of Manufacturing Engineers (SME). 

Congrats Mostafa!
 

Nuclear Engineering Projects Awarded $1.6 Million in Research Funding

  • By Jennifer Zheng
  • 7 July 2021

Congratulations to Heng Ban, Paul Ohodnicki, and Kevin Chen for winning $1.6 million of advanced nuclear energy R&D funding from the U.S. Department of Energy! 

Heng Ban’s project, titled “Fragmentation and Thermal Energy Transport of Chromia-doped Fuels Under Transient Conditions,” will use various aspects of engineering-scale modeling and experimental testing to understand thermal energy transport from high burnup accident tolerant fuels. The team hopes to fill a major knowledge gap for modeling and simulating transient fuel performance and safety for future integral testing and fuel licensing.

Paul Ohodnicki’s and Kevin Chen’s project, titled “Fusion of Distributed Fiber Optics, Acoustic NDE, and Physics-Based AI for Spent Fuel Monitoring,” will leverage the fusion between fiber optic distributed acoustic sensing and advanced acoustic nondestructive evaluation techniques with artificial intelligence enhanced classification frameworks to quantitatively characterize the internal state of dry cask storage systems without introducing additional risks of failure.
 

An Atomic Look at Next Generation Batteries

  • By Jennifer Zheng
  • 16 June 2021

 Venkat Viswanathan and his colleagues recently published a paper in Nature describing their research in the anionic reduction-oxidation mechanism of lithium-rich cathodes. Normal Li-ion batteries work because of cationic redox, where a metal ion changes its oxidation state as lithium is added or removed. However, only one lithium ion can be stored per metal ion. Lithium-rich cathodes on the other hand can store more, and researchers attribute this to the anionic redox mechanism. 

The team set out to find conclusive evidence of this by using Compton scattering, a phenomenon where a photon deviates from a trajectory after interacting with a particle such as an electron. They observed how electron beams’ orbits in the anionic redox activity can be imaged and visualized and its character and symmetry determined. 

Previous research has not been able to provide a clear image of the quantum mechanical electronic orbitals related to redox reactions because standard experiments could not measure it. However, when the team saw the agreement in redox character between theory and experimental results, they realized that they could image the oxygen states that are responsible for the redox mechanism. 

The gathered evidence supports the anionic redox mechanism in a lithium-rich battery material. Furthermore, the study provides a clear image of a lithium-rich battery at the atomic level and suggests pathways for improving and designing next generation cathodes for electric aviation.