Plasmonic Metasurface for Spatially Resolved Optical Sensing in Three Dimensions
| العنوان: | Plasmonic Metasurface for Spatially Resolved Optical Sensing in Three Dimensions |
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| المؤلفون: | David Albinsson, Christoph Langhammer, Ferry Anggoro Ardy Nugroho, Tomasz J. Antosiewicz |
| المصدر: | ACS Nano |
| بيانات النشر: | American Chemical Society (ACS), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Materials science, materials science, nanoplasmonic sensor, polymer, General Physics and Astronomy, Nanoparticle, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Article, chemistry.chemical_compound, glass transition temperature, General Materials Science, Surface plasmon resonance, Methyl methacrylate, Plasmon, business.industry, Bilayer, General Engineering, nanoplasmonics, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Nanolithography, Methacrylic acid, chemistry, nanofabrication, Particle, Optoelectronics, 0210 nano-technology, business, 3D |
| الوصف: | The highly localized sensitivity of metallic nanoparticles sustaining localized surface plasmon resonance (LSPR) enables detection of minute events occurring close to the particle surface and forms the basis for nanoplasmonic sensing. To date, nanoplasmonic sensors typically consist of two-dimensional (2D) nanoparticle arrays and can therefore only probe processes that occur within the array plane, leaving unaddressed the potential of sensing in three dimensions (3D). Here, we present a plasmonic metasurface comprising arrays of stacked Ag nanodisks separated by a thick SiO2 dielectric layer, which, through rational design, exhibit two distinct and spectrally separated LSPR sensing peaks and corresponding spatially separated sensing locations in the axial direction. This arrangement thus enables real-time plasmonic sensing in 3D. As a proof-of-principle, we successfully determine in a single experiment the layer-specific glass transition temperatures of a bilayer polymer thin film of poly(methyl methacrylate), PM/VIA, and poly(methyl methacrylate)/poly(methacrylic acid), P(MMA-MAA). Our work thus demonstrates a strategy for nanoplasmonic sensor design and utilization to simultaneously probe local chemical or physical processes at spatially different locations. In a wider perspective, it stimulates further development of sensors that employ multiple detection elements to generate distinct and spectrally individually addressable LSPR modes. |
| تدمد: | 1936-086X 1936-0851 |
| DOI: | 10.1021/acsnano.9b09508 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1146f97e5ce8257fccba9ecd069adae6 https://doi.org/10.1021/acsnano.9b09508 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....1146f97e5ce8257fccba9ecd069adae6 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1936086X 19360851 |
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| DOI: | 10.1021/acsnano.9b09508 |