Extreme Control of Light and Sound Waves with Metamaterials
Andrea Alù, Ph.D.Distinguished Professor, City University of New York (CUNY) Einstein Professor of Physics, CUNY Graduate Center,
Founding Director, CUNY Advanced Science Research Center
Simons Foundation Presidential Lectures are free public colloquia centered on four main themes: Biology, Physics, Mathematics and Computer Science, and Neuroscience and Autism Science. These curated, high-level scientific talks feature leading scientists and mathematicians and are intended to foster discourse and drive discovery among the broader NYC-area research community. We invite those interested in the topic to join us for this weekly lecture series.
The field of metamaterials — artificial materials engineered at the nanoscale — has been rapidly evolving in the past two decades, demonstrating extreme wave phenomena and unprecedented control over wave propagation.
In this talk, Andrea Alù will discuss recent developments in this field of research, emphasizing the role of symmetries in establishing emerging optical and acoustic properties of metamaterials based on otherwise simple constituents. He will explore how geometrical rotations, suitably tailored perturbations and broken time reversal symmetry can be carefully engaged to tailor waves in robust and efficient ways, control their propagation, break Lorentz reciprocity and enable topological order, dualities and phase transitions. Finally, he will examine the underlying physical principles that span over many wave platforms, and their impact on practical technologies, from imaging, energy and sensing to computing and communications.