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Universal Approach to Rapid Amplified Plasmonic Sensing Using Helix Defect Phase Transition Polymers
Author(s) -
Shugayev Roman,
Devkota Jagannath,
Kim KiJoong,
Cvetic Patricia,
Ohodnicki Paul
Publication year - 2021
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.202010644
Subject(s) - materials science , plasmon , permittivity , phase transition , phase (matter) , quadrupole , nanotechnology , polymer , optoelectronics , helix (gastropod) , dielectric , condensed matter physics , chemistry , organic chemistry , physics , composite material , ecology , atomic physics , snail , biology
Permittivity sensing is a critically important analytical tool for bioscience, environmental, and industrial applications. The response time for commonly used plasmonic permittivity sensors is fundamentally set by the reaction kinetics of chemically adsorbed analytes. In this work, the proposal is to overcome this limit by combining plasmonic sensors with phase transition materials possessing a rapid amplified electrostatic response such as quadrupole moment induced molecular helix reversal. As a proof‐of‐concept, rapid sensing of CO 2 on a phase transition polytetrafluoroethylene substrate and amplification of permittivity response in plasmonic Fabry–Perot sensor is shown. The demonstrated universal approach holds promise for a wide range of applications in fast, real time sensing and monitoring of biological and environmental processes.