Silver nanocube dimer nanojunctions as plasmon-enhanced Raman sensors

Abstract

Here, we demonstrated that the enhancement factor of the Raman signal in dimer nanojunctions under the plasmon-induced electromagnetic field can be tuned by the following parameters: (1) the conformations of...

Metal dimer nanojunction-magnetic material composites for magnetic field sensing

“…The dimer nanojunction composites exhibited tunable plasmonic-coupling strength, the spacing between AgNCs in the dimer nanojunction, under external stimuli, which led to highly sensitive Raman scattering signals changes under external stimuli. 19 Theoretically, nanocomposites with magnetic materials around dimer nanojunctions can be used to detect the external magnetic field by changing in the AgNC spacing in dimer nanojunctions under an external magnetic field. Here, nanocomposites with two different dimer nanojunction morphologies, horizontal and vertical dimer nanojunctions, and three different magnetic materials, NDA, BIM, and MNB, were used to study the response of magnetic materials to an external magnetic field, parallel ( y -axis) or perpendicular ( z -axis) to nanocomposites.…”