Abstract
Mid-Infrared (mid-IR) spectroscopy has been widely used to identify biomolecules. Due to the general poor interaction of mid-IR light with nanometric-scale molecules, the electro-optical properties of graphene resonant plasmons based device is exploited to demonstrate a tunable label-free protein sensor with high sensitivity. The confinement of graphene plasmons is much larger than that of the conventional metallic structure due to the two-dimensional nature of the collective oscillations of Dirac quasi-particles. The localized graphene plasmons can dynamically produce a high light overlap with nanometer size biomolecules, which plays an essential role in the resulted super sensitivity in the detection of the protein's permittivity. Furthermore, graphene plasmons merge optics with electronics which provide a unique capacity to control light in nanoscale. Tunable resonant spectra selectivity combined with the super ambient condition sensitivity promise the graphene plasmons based device exciting prospects in future nanoscale biosensing.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
