February 2020
Engineers Week: Harnessing Metamaterials to Manipulate Electromagnetic and Acoustic Waves
Dr. Xin Zhang, Professor, Boston University Location: 138 ISEC Metamaterials have been intensively studied and applied to a broad range of practical applications ranging from wireless communications to magnetic resonance imaging. Photonic metamaterials consisting of subwavelength “meta-atoms” have received enormous interest due to their extraordinary and unprecedented optical properties. Specifically, the effective permittivity and permeability can be tailored and reconfigured to construct metamaterial devices by modulating or actuating the constituent meta-atoms. By leveraging microelectromechanical system (MEMS) technology, we have developed…
Find out more »Electrical and Computer Engineering Seminar: Lili Su
Location: ISEC 138 Learning with Distributed Systems: Adversary-Resilience and Neural Networks Abstract: In this talk, Su will first talk about how to secure Federated Learning (FL) against adversarial faults. FL is a new distributed learning paradigm proposed by Google. The goal of FL is to enable the cloud (i.e., the learner) to train a model without collecting the training data from users' mobile devices. Compared with traditional learning, FL suffers serious security issues and several practical constraints call for new…
Find Out MoreDecember 2022
Chuangtang Wang’s PhD Proposal Review
"All-optical Control of Magnetization in Nanostructures" Committee: Prof. Yongmin Liu (Advisor) Prof. Don Heiman Prof. Nian X. Sun Abstract: The switching of magnetization by a femtosecond laser within several picoseconds has recently gained substantial attention, because it promises next-generation, energy-efficient, and high-rate data storage technology. One of the most intriguing demonstrations is the helicity-dependent switching (HD-AOS) of a ferromagnet, in which the magnetization states can be deterministically written and erased using left- and right-circularly polarized light. However, the challenge is…
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