On columnar thin films as platforms for surface-plasmonic-polaritonic optical sensing: Higher-order considerations

Jamaian, Siti Suhana; Mackay, Tom G.

doi:10.1016/j.optcom.2012.08.006

Cited by 3 publications

(3 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such sensitivities of up to 300 • per RIU compare favourably to sensitivities reported for optical sensing based on the excitation of surface-plasmon-polariton waves [19,20,21]. In particular, the maximum sensitivities reported in recent studies involving surface-plasmon-polariton waves excited at the planar surfaces of sculptured thin films are an order of magnitude smaller than those found here for VWP [22,23,24].…”

Section: Closing Remarkssupporting

confidence: 74%

On the sensitivity of directions that support Voigt wave propagation in infiltrated biaxial dielectric materials

Mackay

2014

J. Nanophoton

Self Cite

View full text Add to dashboard Cite

Voigt wave propagation (VWP) was considered in a porous biaxial dielectric material which was infiltrated with a material of refractive index na. The infiltrated material was regarded as a homogenized composite material in the long-wavelength regime and its constitutive parameters were estimated using the extended Bruggeman homogenization formalism. In our numerical studies, the directions which support VWP were found to vary by as much as 300• per RIU as the refractive index na was varied. The sensitivities achieved were acutely dependent upon the refractive index na and the degrees of anisotropy and dissipation of the porous biaxial material. The orientations, shapes and sizes of the particles which constitute the infiltrating material and the porous biaxial material exerted only a secondary influence on the maximum sensitivities achieved. Also, for the parameter ranges considered, the degree of porosity of the biaxial material had little effect on the maximum sensitivities achieved. These numerical findings bode well for the possible harnessing of VWP for optical sensing applications.

show abstract

Section: Closing Remarkssupporting

confidence: 74%

On the sensitivity of directions that support Voigt wave propagation in infiltrated biaxial dielectric materials

Mackay

2014

J. Nanophoton

Self Cite

View full text Add to dashboard Cite

show abstract

“…But even for values of ǫ hcm well away from the immediate vicinity of Re ǫ hcm ≈ 0, the magnitudes of the sensitivity measure dθ c /dn b presented in Figs. 5, 6, 7, 8 and 10 compare favourably to sensitivities associated with optical sensing approaches based on surface-plasmon-polariton waves [33,34,35,36,37], Voigt waves [38,39], as well as generic porous dielectric materials [40]. We note that the issue of relatively large losses that arises in the parameter regime where Re ǫ hcm ≈ 0 could, in principle, be addressed by the use of active component materials [41].…”

Section: Discussionmentioning

confidence: 81%

“…Indeed, in the limit ǫ hcm → 0 − , the critical angle θ c → π/2 and the derivative dθ c /dn b becomes unbounded. However, [33,34,35,36,37], Voigt waves [38,39], as well as generic porous dielectric materials [40]. We note that the issue of relatively large losses that arises in the parameter regime where Re ǫ hcm ≈ 0 could, in principle, be addressed by the use of active component materials [41].…”

Section: Discussionmentioning

confidence: 99%

Toward optical sensing with hyperbolic metamaterials

Mackay

2015

Opt. Eng

Self Cite

View full text Add to dashboard Cite

A possible means of optical sensing, based on a porous hyperbolic material that is infiltrated by a fluid containing an analyte to be sensed, was theoretically investigated. The sensing mechanism relies on the observation that extraordinary plane waves propagate in the infiltrated hyperbolic material only in directions enclosed by a cone aligned with the optic axis of the infiltrated hyperbolic material. The angle this cone subtends to the plane perpendicular to the optic axis is θ c . The sensitivity of θ c to changes in the refractive index of the infiltrating fluid, namely n b , was explored; also considered were the permittivity parameters and porosity of the hyperbolic material, as well as the shape and size of its pores. Sensitivity was gauged by the derivative dθ c ∕dn b . In parametric numerical studies, values of dθ c ∕dn b in excess of 500 deg per refractive index unit were computed, depending upon the constitutive parameters of the porous hyperbolic material and infiltrating fluid and the nature of the porosity. In particular, it was observed that exceeding large values of dθ c ∕dn b could be attained as the negative-valued eigenvalue of the infiltrated hyperbolic material approached zero. Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 08/18/2015 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx Optical Engineering Optical Engineering 067102-3 June 2015 • Vol. 54(6) Mackay: Toward optical sensing with hyperbolic metamaterials Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 08/18/2015 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx Optical Engineering 067102-8 June 2015 • Vol. 54(6) Mackay: Toward optical sensing with hyperbolic metamaterials Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 08/18/2015 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx Optical Engineering 067102-9 June 2015 • Vol. 54(6) Mackay: Toward optical sensing with hyperbolic metamaterials Downloaded From: http://opticalengineering.spiedigitallibrary.org/ on 08/18/2015 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx

show abstract

Effect of orientation on excitation of surface-plasmon-polariton waves guided by a columnar thin film deposited on a metal grating

et al. 2020

View full text Add to dashboard Cite

The excitation of surface-plasmon-polariton (SPP) waves guided by a columnar thin film (CTF) deposited on a one-dimensional metallic surface-relief grating was studied employing the rigorous coupled-wave approach, when the grating plane, the plane of incidence, and the morphologically significant plane of the CTF are all different. The incident plane wave in this grating-coupled configuration could be either por s-polarized. The absorptance was plotted against the polar angle of incidence at a fixed value of the free-space wavelength and absorptance peaks were correlated with the solution of the dispersion equation of the underlying canonical boundary-value problem for SPP waves. Both p-polarized and s-polarized plane waves can excite SPP waves, provided that either the plane of incidence and/or the morphologically significant plane of the CTF do not coincide with the grating plane. None, one, or multiple SPP-wave excitations are possible, depending on the orientations of the grating plane and the morphologically significant plane with respect to the plane of incidence. The direction of propagation of an SPP wave thus excited may not wholly lie in the plane of incidence.

show abstract

On columnar thin films as platforms for surface-plasmonic-polaritonic optical sensing: Higher-order considerations

Cited by 3 publications

References 35 publications

On the sensitivity of directions that support Voigt wave propagation in infiltrated biaxial dielectric materials

On the sensitivity of directions that support Voigt wave propagation in infiltrated biaxial dielectric materials

Toward optical sensing with hyperbolic metamaterials

Effect of orientation on excitation of surface-plasmon-polariton waves guided by a columnar thin film deposited on a metal grating

Contact Info

Product

Resources

About