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Part 1: Document Description
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Citation |
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Title: |
Replication Data for: Generalized Brewster Angle Effect in Thin-Film Optical Absorbers and Its Application for Graphene Hydrogen Sensing |
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Identification Number: |
doi:10.21979/N9/E0CDQU |
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Distributor: |
DR-NTU (Data) |
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Date of Distribution: |
2021-08-10 |
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Version: |
1 |
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Bibliographic Citation: |
Kandammathe Valiyaveedu, Sreekanth, 2021, "Replication Data for: Generalized Brewster Angle Effect in Thin-Film Optical Absorbers and Its Application for Graphene Hydrogen Sensing", https://doi.org/10.21979/N9/E0CDQU, DR-NTU (Data), V1 |
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Citation |
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Title: |
Replication Data for: Generalized Brewster Angle Effect in Thin-Film Optical Absorbers and Its Application for Graphene Hydrogen Sensing |
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Identification Number: |
doi:10.21979/N9/E0CDQU |
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Authoring Entity: |
Kandammathe Valiyaveedu, Sreekanth (Institute of Materials Research and Engineering, A*STAR) |
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Software used in Production: |
Origin, Matlab |
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Grant Number: |
AcRF Tier 1 RG191/17 |
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Grant Number: |
Tier 2 MOE2015-T2-2-103 |
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Grant Number: |
OPP1119542 |
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Grant Number: |
OPP1119542 |
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Distributor: |
DR-NTU (Data) |
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Access Authority: |
Kandammathe Valiyaveedu, Sreekanth |
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Depositor: |
Kandammathe Valiyaveedu, Sreekanth |
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Date of Deposit: |
2021-08-10 |
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Holdings Information: |
https://doi.org/10.21979/N9/E0CDQU |
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Study Scope |
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Keywords: |
Engineering, Physics, Engineering, Physics, Brewster-angle effect, thin film optics, perfect absorbers, visible frequencies, graphene, gas sensing |
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Abstract: |
Generalized Brewster angle (GBA) is the incidence angle at polarization by reflection for p- or s-polarized light takes place. Realizing s-polarization Brewster effect requires a material with magnetic response which is challenging at optical frequencies since the magnetic response of materials at these frequencies is extremely weak. Here, we experimentally realize GBA effect in the visible using a thin-film absorber system consisting of a dielectric film on an absorbing substrate. Polarization by reflection is realized for both p- and s- polarized light at different angles of incidence and multiple wavelengths. We provide a theoretical framework for the generalized Brewster effect in thin-film light absorbers. We demonstrate hydrogen gas sensing using a single layer graphene film transferred on a thin-film absorber at the GBA with ~1 fg/mm2 aerial mass sensitivity. The ultrahigh sensitivity stems from the strong phase sensitivity near point-of-darkness, particularly at the GBA, and the strong light-matter interaction in planar nanocavities. These findings depart from the traditional domain of thin-films as mere interference optical coatings and highlight its many potential applications including gas sensing and biosensing. |
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Kind of Data: |
Experimental and theoretical data |
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Methodology and Processing |
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Data Access |
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Other Study Description Materials |
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Related Publications |
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Citation |
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Identification Number: |
10.1021/acsphotonics.9b00564 |
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Bibliographic Citation: |
Sreekanth, K. V., ElKabbash, M., Medwal, R., Zhang, J., Letsou, T., Strangi, G., ... & Singh, R. (2019). Generalized brewster angle effect in thin-film optical absorbers and its application for graphene hydrogen sensing. ACS photonics, 6(7), 1610-1617. |
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Manuscript file.docx |
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Supporting information.docx |
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application/vnd.openxmlformats-officedocument.wordprocessingml.document |