Humidity Sensing Using Surface Plasmon Excitation in Fluorescent Microsphere Films

Kobayashi, Yutaka; Fukushima, Makoto; Ohdaira, Yasuo; Shinbo, Kazunari; Kato, Koji; Kaneko, Futao

doi:10.14723/tmrsj.32.317

Cited by 1 publication

(7 citation statements)

References 9 publications

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“…In the ATR Kretschmann configuration, part of the SP energy can be converted to far-field light (SP emission light). [5][6][7][8] In this study, SP emission light was also observed, as shown in Fig. 1.…”

Section: Sp Emission Lightsupporting

confidence: 61%

“…Emission light was observed as a function of the emission angle e , and could be strongly observed at approximately the SP resonant angles. [5][6][7][8] SP emission light has wavelength components of dye photoluminescence. In the measurement, emission light produced by SPs being excited owing to surface roughness is also observed, even with no dye contribution.…”

Section: Sp Emission Lightmentioning

confidence: 99%

“…[2][3][4] In the ATR configuration, some portions of the SP energy are emitted as far-field light at an SP resonance angle through a prism, that is, SP emission light. [5][6][7][8] In particular, SP emission light produced by organic fluorescent molecules adjacent to metal films has been reported. 7,8) In such a case, near-field light of an excited fluorescent dye 9) induces SPs.…”

Section: Introductionmentioning

confidence: 99%

“…[5][6][7][8] In particular, SP emission light produced by organic fluorescent molecules adjacent to metal films has been reported. 7,8) In such a case, near-field light of an excited fluorescent dye 9) induces SPs. SP emission light has wavelength components of dye photoluminescence (PL) and depends on the dielectric constant of organic films.…”

Section: Introductionmentioning

confidence: 99%

“…However, studies of sensing exploiting SP emission light properties are few. 6,8) In this study, poly(vinyl alcohol) (PVA) films with polystyrene (PS) microspheres were prepared, and changes in ATR and SP emission light properties due to humidity adsorption were investigated for the development of a new optical sensing device. Fluorescent dyes were contained in the spheres, and SP emission light due to these dyes was observed.…”

Section: Introductionmentioning

confidence: 99%

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A 6-dimensional grand unified theory with the compact space having the topology of a real projective plane, i.e., a 2-sphere with opposite points identified, is considered. The space is locally flat except for two conical singularities where the curvature is concentrated. One supersymmetry is preserved in the effective 4d theory. The unified gauge symmetry, for example SU(5) , is broken only by the non-trivial global topology. In contrast to the Hosotani mechanism, no adjoint Wilson-line modulus associated with this breaking appears. Since, locally, SU(5) remains a good symmetry everywhere, no UV-sensitive threshold corrections arise and SU(5)-violating local operators are forbidden. Doublettriplet splitting can be addressed in the context of a 6d N = 2 super Yang-Mills theory with gauge group SU(6). If this symmetry is first broken to SU(5) at a fixed point and then further reduced to the standard model group in the above non-local way, the two light Higgs doublets of the MSSM are predicted by the group-theoretical and geometrical structure of the model.

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Section: Sp Emission Lightsupporting

confidence: 61%