Options
Metasurface-Enhanced Infrared Spectroscopy: An Abundance of Materials and Functionalities
Publikationstyp
Journal Article
Date Issued
2023-08-24
Sprache
English
Author(s)
John-Herpin, Aurelian
Kühner, Lucca
Richter, Felix
Huang, Steven H.
Shvets, Gennady
Oh, Sang Hyun
Altug, Hatice
Journal
Volume
35
Issue
34
Article Number
2110163
Citation
Advanced Materials 35 (34): 2110163 (2023)
Publisher DOI
Scopus ID
ISSN
09359648
Infrared spectroscopy provides unique information on the composition and dynamics of biochemical systems by resolving the characteristic absorption fingerprints of their constituent molecules. Based on this inherent chemical specificity and the capability for label-free, noninvasive, and real-time detection, infrared spectroscopy approaches have unlocked a plethora of breakthrough applications for fields ranging from environmental monitoring and defense to chemical analysis and medical diagnostics. Nanophotonics has played a crucial role for pushing the sensitivity limits of traditional far-field spectroscopy by using resonant nanostructures to focus the incident light into nanoscale hot-spots of the electromagnetic field, greatly enhancing light–matter interaction. Metasurfaces composed of regular arrangements of such resonators further increase the design space for tailoring this nanoscale light control both spectrally and spatially, which has established them as an invaluable toolkit for surface-enhanced spectroscopy. Starting from the fundamental concepts of metasurface-enhanced infrared spectroscopy, a broad palette of resonator geometries, materials, and arrangements for realizing highly sensitive metadevices is showcased, with a special focus on emerging systems such as phononic and 2D van der Waals materials, and integration with waveguides for lab-on-a-chip devices. Furthermore, advanced sensor functionalities of metasurface-based infrared spectroscopy, including multiresonance, tunability, dielectrophoresis, live cell sensing, and machine-learning-aided analysis are highlighted.
Subjects
biosensors
machine learning
metasurfaces
nanophotonics
surface-enhanced spectroscopy
DDC Class
600: Technology