Artículo
Graphene surface modes enabling terahertz pulling force
Fecha de publicación:
03/2023
Editorial:
Optical Society of America
Revista:
Applied Optics
ISSN:
0003-6935
e-ISSN:
2155-3165
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Plasmonic substrates are widely reported for their use in the manipulation of sub-wavelength particles. Here we analyze the optical force in the terahertz (THz) spectrum acting on a dielectric nanoparticle when located close to a graphene monolayer. When lying on a dielectric planar substrate, the graphene sheet enables the nano-sized scatterer to excite a surface plasmon (SP) well confined on the dielectric surface. Under quite general conditions, large pulling forces can be exerted on the particle as a consequence of conservation of linear momentum and a self-action effect. Our results show that the pulling force intensity critically depends on the particle shape and orientation. The low heat dissipation of graphene SPs paves the way for the development of a novel plasmonic tweezer for applications involving biospecimen manipulation in the THz region.
Palabras clave:
Diffraction limit
,
Evanescent waves
,
Spatial frequency
,
Surface plasmons
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Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Ferrari, Hernan Javier; Herrero, Víctor Angel; Zapata Rodríguez, Carlos Javier; Cuevas, Mauro; Graphene surface modes enabling terahertz pulling force; Optical Society of America; Applied Optics; 62; 8; 3-2023; 64-70
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