2020
DOI: 10.3390/s20185119
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Bloch Surface Wave Resonance Based Sensors as an Alternative to Surface Plasmon Resonance Sensors

Abstract: We report on a highly sensitive measurement of the relative humidity (RH) of moist air using both the surface plasmon resonance (SPR) and Bloch surface wave resonance (BSWR). Both resonances are resolved in the Kretschmann configuration when the wavelength interrogation method is utilized. The SPR is revealed for a multilayer plasmonic structure of SF10/Cr/Au, while the BSWR is resolved for a multilayer dielectric structure (MDS) comprising four bilayers of TiO2/SiO2 with a rough termination layer of TiO2. The… Show more

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Cited by 46 publications
(26 citation statements)
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“…In resulting eigenproblem, eigenvalues of the transmission matrix are related to the Bloch wave number K . For derivation, see [ 45 ] and resulting equation for p -polarized light is [ 16 ] where a , b and are thicknesses of the layers and a bilayer thickness, respectively, , is a normal component of a wave vector in corresponding medium and is a propagation constant. Equation ( 15 ) gives dependence of the propagation constant on the angular frequency .…”
Section: Theoretical Modelmentioning
confidence: 99%
See 2 more Smart Citations
“…In resulting eigenproblem, eigenvalues of the transmission matrix are related to the Bloch wave number K . For derivation, see [ 45 ] and resulting equation for p -polarized light is [ 16 ] where a , b and are thicknesses of the layers and a bilayer thickness, respectively, , is a normal component of a wave vector in corresponding medium and is a propagation constant. Equation ( 15 ) gives dependence of the propagation constant on the angular frequency .…”
Section: Theoretical Modelmentioning
confidence: 99%
“…The 1DPhCs can also act as planar waveguides [ 4 ] and the guided waves (GWs) can be used in sensing applications [ 5 , 6 , 7 ]. Last but not the least, the Bloch surface waves (BSWs) propagating along the interface of the 1DPhC with an external medium are widely used in sensing, including the angular [ 8 , 9 , 10 , 11 ] or wavelength [ 12 , 13 , 14 , 15 , 16 , 17 ] interrogations. Thus, the BSW-based sensors extend mature technologies applied in sensing that have several applications in different fields of biology [ 18 ], physics [ 18 ], and chemistry [ 18 , 19 , 20 , 21 ].…”
Section: Introductionmentioning
confidence: 99%
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“…However, the sensitivity of SPR sensors cannot be increased [ 5 ]. A finite one-dimensional photonic crystal (1DPC) structure for an electromagnetic waves propagating at the interface between a homogeneous medium, which are named Bloch surface waves (BSWs), have found a large number of applications [ 6 , 7 , 8 ] and were proposed as an alternative to SPR [ 9 ]. Contrary to SPPs, the BSWs can be excited by both s- and p-polarized waves by changing the geometry and materials of the photonic crystal.…”
Section: Introductionmentioning
confidence: 99%
“…Their dispersion can be designed at almost any wavelength by properly choosing the refractive index and thickness of the layers of the 1DPC. Owing to the dielectric materials of the photonic crystal, sensors based on BSWs are characterized by mechanical and chemical stability, thus permitting operation in aggressive environments [ 9 ]. However, 1DPC is a multi-layer stacked structure where a complex and precise coating process is required and that will increase the difficulty of sensor production.…”
Section: Introductionmentioning
confidence: 99%