Active plasmonic nanoantenna: an emerging toolbox from photonics to neuroscience

Nanophotonics

article

Ahsan Habib¹  Xiangchao Zhu¹  Sabrina Fong¹  Ahmet Ali Yanik¹ 

[1] Department of Electrical Engineering, Jack Baskin School of Engineering, University of California Santa Cruz;California Institute for Quantitative Biosciences (QB3), University of California Santa Cruz

关键词: active plasmonics;    functional plasmonics;    nanoantenna;    nanocircuit;    neurophotonics;    plasmonics;   

DOI  :  10.1515/nanoph-2020-0275

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

Concepts adapted from radio frequency devices have brought forth subwavelength scale optical nanoantenna, enabling light localization below the diffraction limit. Beyond enhanced light–matter interactions, plasmonic nanostructures conjugated with active materials offer strong and tunable coupling between localized electric/electrochemical/mechanical phenomena and far-field radiation. During the last two decades, great strides have been made in development of active plasmonic nanoantenna (PNA) systems with unconventional and versatile optical functionalities that can be engineered with remarkable flexibility. In this review, we discuss fundamental characteristics of active PNAs and summarize recent progress in this burgeoning and challenging subfield of nano-optics. We introduce the underlying physical mechanisms underpinning dynamic reconfigurability and outline several promising approaches in realization of active PNAs with novel characteristics. We envision that this review will provide unambiguous insights and guidelines in building high-performance active PNAs for a plethora of emerging applications, including ultrabroadband sensors and detectors, dynamic switches, and large-scale electrophysiological recordings for neuroscience applications.

【 授权许可】

CC BY