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Microsecond All-Optical Modulation by Biofunctionalized Porous Silicon Microcavity.

ABSTRACT: We successfully created a composite photonic structure out of porous silicon (PSi) microcavities doped by the photochromic protein, photoactive yellow protein (PYP). Massive incorporation of the protein molecules into the pores was substantiated by a 30 nm shift of the resonance dip upon functionalization, and light-induced reflectance changes of the device due to the protein photocycle were recorded. Model calculations for the photonic properties of the device were consistent with earlier results on the nonlinear optical properties of the protein, whose degree of incorporation into the PSi structure was also estimated. The successful proof-of-concept results are discussed in light of possible practical applications in the future.

SUBMITTER: Petrovszki D

PROVIDER: S-EPMC10385878 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature

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Microsecond All-Optical Modulation by Biofunctionalized Porous Silicon Microcavity.

Petrovszki Dániel D Valkai Sándor S Kelemen Lóránd L Nagy László L Agarwal Vivechana V Krekic Szilvia S Zimányi László L Dér András A

Nanomaterials (Basel, Switzerland) 20230714 14

We successfully created a composite photonic structure out of porous silicon (PSi) microcavities doped by the photochromic protein, photoactive yellow protein (PYP). Massive incorporation of the protein molecules into the pores was substantiated by a 30 nm shift of the resonance dip upon functionalization, and light-induced reflectance changes of the device due to the protein photocycle were recorded. Model calculations for the photonic properties of the device were consistent with earlier resul ...[more]

PMID: 37513080

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