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OSE Seminar by Dr. Alejandro Manjavacas on Collective effects on periodic arrays of plasmonic nanostructures

Departmental News

Prof. Alejandro Manjavacas

Posted: April 30, 2019

Date: Thursday, May 2, 2019 

Time:  11:00 AM to Noon

Location:  Physics, Room 190

Map to Physics:

http://physics.unm.edu/findpanda/

ADA Accommodations are available.

Speaker:

Dr. Alejandro Manjavacas

Assistant Professor

Department of Physics and Astronomy at UNM

Abstract:

Periodic arrays are an exceptionally interesting arrangement for plasmonic nanostructures due to their ability to support strong collective lattice resonances arising from the coherent multiple scattering enabled by the array periodicity. Thanks to these exceptional properties, periodic arrays are being exploited in a wide variety of applications, including ultrasensitive biosensing, nanoscale light emission, and color printing, to cite a few. In this talk, we will discuss the response of arrays with multi-particle unit cells using an analytical approach based on plasmon hybridization, which provides a simple an efficient way to design periodic arrays with engineered properties. We will also discuss how the interplay between the response of the individual constituents and the collective interaction determines the ultimate limits of the field enhancement provided by these systems. We will finish by addressing the effect that the presence of edges as well as disorder have on the response of these systems.

Biography:

Prof. Alejandro Manjavacas received his M.S. and Ph.D degrees from Universidad Complutense de Madrid in 2009 and 2013, respectively, working under the supervision of Prof. Garcia de Abajo. After completion of his Ph.D., he moved to Rice University in 2013 as the J. Evans Attwell Welch postdoctoral fellow working in the group of Prof. Peter Nordlander. Since the summer of 2015, he is an Assistant Professor in the Department of Physics and Astronomy at the University of New Mexico. Prof. Manjavacas is the recipient of several awards including the RSEF-BBVA Foundation award to the best young theoretical physicist in Spain. The focus of his research is to understand the fundamentals of the light-matter interaction at the nanoscale. He has co-authored over 60 articles and reached over 3400 citations (Google Scholar).