Planar Photonic Crystals Biosensor Applications of TiO2
U. Erdivena, M. Karaaslanb, E. Unalb and F. Karadağa
aDepartment of Physics, Çukurova University, Adana, 01140, Turkey
bDepartment of Electric and Electronic Engineering, University of Mustafa Kemal, Hatay, 31140, Turkey
Received: November 29, 2011; in final form: June 11, 2012
Full Text PDF
We examine quality factor and sensitivity change depending on the resonant wavelength changing refractive index of surrounding liquid for TiO2 photonic crystal slab structure. Photonic crystal slab structure is used widely for biological materials such as proteins, antigens, DNA, cells, virus particles and bacteria. Mentioned photonic crystal slabs are usable with large-area biosensor designs. They permit direct access to externally incident optical beams in a microfluidic device. Model calculations are based on two-dimensional periodic crystal structure. Photonic crystal slab consists of a square lattice of air holes in a finite-thickness dielectric slab. The time domain simulations were implemented by software MIT Electromagnetic Equation Propagation.
DOI: 10.12693/APhysPolA.122.732
PACS numbers: 78.67.Pt, 42.70.Qs, 07.07.Df, 42.79.Pw