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dc.creatorVargas Castro, William E.
dc.creatorHernández Jiménez, Marcela
dc.creatorLibby Hernández, Eduardo
dc.creatorAzofeifa Alvarado, Daniel E.
dc.creatorBarboza Aguilar, Cinthya
dc.creatorSolís Blanco, Ángel Arturo
dc.description.abstractCuticles of some Chrysina scarabs are characterized by flat, graded, and twisted structures of nanosized chitin fibrils. As inferred from SEM images, each species has its own spatial period or pitch P which is dependent on the depth z through the cuticle. From Berreman’s formalism, taking into account the corresponding P(z) dependence, we evaluate reflection spectra of C. aurigans and C. chrysargyrea scarabs. The spectra display the main spectral features observed in the measured ones when small sections of the cuticles are illuminated with non-polarized light, for wavelengths between 300 and 1100 nm. By considering these twisted structures as 1D photonic crystals, an approach is developed to show how the broad band characterizing the reflection spectra arises from a narrow intrinsic photonic band width, whose spectral position moves through visible and near infrared wavelengths. The role of the epicuticle that covers the twisted structures is analyzed in terms of a waxy layer acting as an anti-reflecting coating that also shows low levels of light scattering.es_ES
dc.rightsAtribución 4.0 Internacional*
dc.sourceOptics and Photonics Journal, Vol. 6, Núm. 7, pp. 146-163es_ES
dc.subjectStructural Colores_ES
dc.subjectStructural Chiralityes_ES
dc.subjectNatural Broad Band Reflectores_ES
dc.subjectCircular Polarizationes_ES
dc.subjectJewel Scarabes_ES
dc.subjectChitin Refractive Indexes_ES
dc.subjectUric Acid Refractive Indexes_ES
dc.subjectLeft-Handed Twisted Structurees_ES
dc.subjectBouligand-Type Structurees_ES
dc.titleLight Reflection by Cuticles of Chrysina Jewel Scarabs: Optical Measurements, Morphology Characterization, and Theoretical Modelinges_ES
dc.typeArtículo científicoes_ES
dc.description.procedenceUCR::Investigación::Unidades de Investigación::Ciencias Básicas::Centro de Investigación en Ciencia e Ingeniería de Materiales (CICIMA)es_ES
dc.description.procedenceUCR::Docencia::Ciencias Básicas::Facultad de Ciencias::Escuela de Físicaes_ES
dc.description.procedenceUCR::Docencia::Ciencias Básicas::Facultad de Ciencias::Escuela de Químicaes_ES
dc.description.procedenceUCR::Investigación::Unidades de Investigación::Ciencias Básicas::Centro de Investigación en Estructuras Microscópicas (CIEMIC)es_ES

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Atribución 4.0 Internacional
Except where otherwise noted, this item's license is described as Atribución 4.0 Internacional