Journal ArticleDOI
Ultracompact biochemical sensor built with two-dimensional photonic crystal microcavity.
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TLDR
By measuring the resonant wavelength of a two-dimensional photonic crystal microcavity, a time-resolved sensing capability is demonstrated that can detect the change in refractive index of 0.002.Abstract:
We report an experimental demonstration of an ultracompact biochemical sensor based on a two-dimensional photonic crystal microcavity. The microcavity, fabricated on a silicon-on-insulator substrate, is designed to have a resonant wavelength (λ) near 1.5 µm. The transmission spectrum of the sensor is measured with different ambient refractive indices ranging from n=1.0 to n=1.5. From observation of the shift in resonant wavelength, a change in ambient refractive index of Δn=0.002 is readily apparent. The correspondence between absolute refractive index and resonant wavelength agrees with numerical calculation to within 4% accuracy. The evaporation of water in a 5% glycerol mixture is also used to demonstrate the capability for in situ time-resolved sensing.read more
Citations
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Patent
Système de détection optique pour essais biologiques à haute sensibilité sans marquage
Miguel Holgado Bolaños,Rafael Casquel del Campo,Carlos Luis Molpeceres Álvarez,José Luis Ocaña Moreno,María Fé Lagunas Heras,Miguel Morales Furió +5 more
TL;DR: In this article, a system for detection optique for essais biologiques a haute sensibilite sans marquage concerne un systeme optique de mesure which comprend, a son tour, et au moins, a source d'excitation, des moyens optiques de detection du signal provenant d'une tete optique; and un element for l'integration de multiples analytes comprenant, a tour, and au mins, une pluralite de cellules biosensibles, une plurality of lia
Proceedings ArticleDOI
Bandgap tuning of photonic crystals on III-V nitride thin films
TL;DR: In this paper, a nano-opto-fluidic fluorescence and emission enhancement biosensor that can provide significant increase in photon emission and associated detection limit is presented. And the authors aim to provide active tunability of the bandgap of PhC patterns in piezoelectric AlN thin films through deformation.
Journal ArticleDOI
Numerical analysis of Ge/Si hybrid MOS optical modulator operating at mid-infrared wavelength
TL;DR: In this article, an optical intensity modulator operating at a mid-infrared (MIR) wavelength based on a Ge/Si hybrid metal-oxide-semiconductor (MOS) capacitor formed by bonding a thin Ge membrane on a Si layer was presented.
Book ChapterDOI
Optical Characterization of Nanomaterials-I
TL;DR: In this paper , the authors studied functional photonic nanostructures with linear properties and nonlinear properties, and the second section was devoted to the study of functional nonlinear photonic nano-structures with nonlinear optical properties.
References
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Book
CRC Handbook of Chemistry and Physics
TL;DR: CRC handbook of chemistry and physics, CRC Handbook of Chemistry and Physics, CRC handbook as discussed by the authors, CRC Handbook for Chemistry and Physiology, CRC Handbook for Physics,
Journal ArticleDOI
Block-iterative frequency-domain methods for Maxwell’s equations in a planewave basis
TL;DR: A fully-vectorial, three-dimensional algorithm to compute the definite-frequency eigenstates of Maxwell's equations in arbitrary periodic dielectric structures, including systems with anisotropy or magnetic materials, using preconditioned block-iterative eigensolvers in a planewave basis is described.
Journal ArticleDOI
A Porous Silicon-Based Optical Interferometric Biosensor
Victor Lin,Kianoush Motesharei,Kianoush Motesharei,Keiki-Pua S. Dancil,Keiki-Pua S. Dancil,Michael J. Sailor,Michael J. Sailor,M. Reza Ghadiri,M. Reza Ghadiri +8 more
TL;DR: A biosensor has been developed based on induced wavelength shifts in the Fabry-Perot fringes in the visible-light reflection spectrum of appropriately derivatized thin films of porous silicon semiconductors based on Binding of molecules induced changes in the refractive index of the porous silicon.
Journal ArticleDOI
Linear waveguides in photonic-crystal slabs
TL;DR: In this article, a systematic analysis of waveguides in photonic-crystal slabs is presented, and the considerations that must be applied to achieve single-mode guided bands in these systems are discussed.
Journal ArticleDOI
Principles of biosensing with an extended coupling matrix and surface plasmon resonance
TL;DR: In this paper, the surface plasmon resonance angle shifts are calculated as a function of the amount of organic material in the interaction matrix and the influence of physical parameters, such as matrix thickness and wavelength of the light, on the expected performance is considered.