With careful optimization of structural parameters and manipulation of the refractive index of the dielectric material within the resonant cavity, the structure's sensitivity (S) can reach 2000 nm/RIU, complemented by a figure of merit (FOM) scaling to 188.54 RIU1....
In addition, both methods showed that the presented structure could sort the particles entering the liquid according to their refractive index. The primary physical mechanism of both methods in the proposed structure is to control the force on the particle moving inside the channel, which can be ...
The temperature-induced complex refractive index(CRI) effect of graphene is demonstrated theoretically and experimentally based on a graphene coated in-fiber MZI(Mach-Zehnder interferometer). The relationships between real and imaginary parts of the graphene CRI and temperature are obtained through ...
Picometrology is applied to measure the refractive index of graphene on thermal oxide on silicon. The refractive index varies from ñg = 2.4-1.0i at 532 nm to ñg = 3.0-1.4i at 633 nm at room temperature. The dispersion is five times stronger than bulk graphite (2.67- 1.34i to 2.73...
In addition, the resonance wavelength highly depends on the geometrical parameters, such as the period of the diffraction grating, the duty cycle, the optical thickness of the waveguide layer, and the refractive index of a surrounding material3,4. Due to these characteristics, GMR filters have ...
the variation of sensitivity of the proposed biosensor is measured in corresponding to the increment of a refractive index with a refractive index step 0.01 refractive index unit(RIU).In inclusion of TiO_(2)-SiO_(2) bilayers with graphene-MoS_(2),a maximum sensitivity of 85.375%is numerically...
An analytical expression for the nonlinear refractive index of graphene has been derived and used to obtain the performance metrics of third order nonlinear devices using graphene as a nonlinear medium. None of the metrics is found to be superior to the existing nonlinear optical materials.关键词:...
They observed that the resonance wavelength is tunable, considering the graphene layer, thus, can be used for easy detection of biomaterials, also, the numerical results showed a maximum shift of resonance in a wavelength of around 100 nm, with a refractive index variation of 0.3 for the ...
Negative refractive index in chiral metamaterials. Phys. Rev. Lett. 102, 023901 (2009). Article ADS Google Scholar Chen, H.-T. et al. Active terahertz metamaterial devices. Nature 444, 597–600 (2006). Article ADS CAS Google Scholar Chen, H.-T. et al. A metamaterial solid-state ...
{eff}}} - 2t\), whereλcut-offis the cut-off wavelength andneffis the refractive index of the materials inside the trenches. In this case, it is the effective refractive index of the graphene metamaterial and air. Although the wavelength used here is the cut-off wavelength of the absorpt...