Dielectric or plasmonic Mie object at air–liquid interface: The transferred and the traveling momenta of photon*

Project supported by the World Academy of Science (TWAS) research grant 2018 (Ref: 18-121 RG/PHYS/AS I-FR3240303643) and North South University (NSU), Bangladesh, internal research grant 2018-19 & 2019-20 (approved by the members of BOT, NSU, Bangladesh).
Mahdy M R C1, 2, †, Rivy Hamim Mahmud1, Jony Ziaur Rahman1, Alam Nabila Binte3, Masud Nabila1, Quaderi Golam Dastegir Al4, Moosa Ibraheem Muhammad5, Rahman Chowdhury Mofizur6, Sohel Rahman M5, ‡
       

Diameter of the silica object is 4000 nm and time averaged force has been calculated on the silica object using Eq. (1). The width of the hypothetical short background of air is 2 nm for 2D case and 5 nm for 3D case. The dash line represents the integration boundary. Time averaged optical force is found always pushing when the long background is water (a) for 2D case and (b) for 3D case.