Distinguishing Single-Metal Nanoparticles with Subdiffraction Spatial Resolution Using Variable-Polarization Fourier Transform Nonlinear Optical Microscopy
The development and use of interferometric variable-polarization Fourier transform nonlinear optical (vpFT-NLO) imaging to distinguish colloidal nanoparticles colocated within the optical diffraction limit is described. Using a collinear train of phase-stabilized pulse pairs with orthogonal electric...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
American Chemical Society
2023-03-01
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| Series: | Chemical & Biomedical Imaging |
| Online Access: | https://doi.org/10.1021/cbmi.3c00008 |
| _version_ | 1797739810854535168 |
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| author | Megan A. Steves Kenneth L. Knappenberger |
| author_facet | Megan A. Steves Kenneth L. Knappenberger |
| author_sort | Megan A. Steves |
| collection | DOAJ |
| description | The development and use of interferometric variable-polarization Fourier transform nonlinear optical (vpFT-NLO) imaging to distinguish colloidal nanoparticles colocated within the optical diffraction limit is described. Using a collinear train of phase-stabilized pulse pairs with orthogonal electric field vectors, the polarization of nonlinear excitation fields are controllably modulated between linear, circular, and various elliptical states. Polarization modulation is achieved by precise control over the time delay separating the orthogonal pulse pairs to within hundreds of attoseconds. The resultant emission from gold nanorods is imaged to a 2D array detector and correlated to the excitation field polarization and plasmon resonance frequency by Fourier transformation. Gold nanorods with length-to-diameter aspect ratios of 2 support a longitudinal surface plasmon resonance at approximately 800 nm, which is resonant with the excitation fundamental carrier wavelength. Differences in the intrinsic linear and circular dichroism resulting from variation in their relative alignment with respect to the laboratory frame enable optical differentiation of nanorods separated within 50 nm, which is an approximate 5-fold improvement over the diffraction limit of the microscope. The experimental results are supported by analytical simulations. In addition to subdiffraction spatial resolution, the vpFT-NLO method intrinsically provides the polarization- and frequency-dependent resonance response of the nanoparticlesproviding spectroscopic information content along with super-resolution imaging capabilities. |
| first_indexed | 2024-03-12T14:03:33Z |
| format | Article |
| id | doaj.art-3b9be95daa22428db41be113cfd5975f |
| institution | Directory Open Access Journal |
| issn | 2832-3637 |
| language | English |
| last_indexed | 2024-03-12T14:03:33Z |
| publishDate | 2023-03-01 |
| publisher | American Chemical Society |
| record_format | Article |
| series | Chemical & Biomedical Imaging |
| spelling | doaj.art-3b9be95daa22428db41be113cfd5975f2023-08-21T17:52:40ZengAmerican Chemical SocietyChemical & Biomedical Imaging2832-36372023-03-0111919810.1021/cbmi.3c00008Distinguishing Single-Metal Nanoparticles with Subdiffraction Spatial Resolution Using Variable-Polarization Fourier Transform Nonlinear Optical MicroscopyMegan A. StevesKenneth L. KnappenbergerThe development and use of interferometric variable-polarization Fourier transform nonlinear optical (vpFT-NLO) imaging to distinguish colloidal nanoparticles colocated within the optical diffraction limit is described. Using a collinear train of phase-stabilized pulse pairs with orthogonal electric field vectors, the polarization of nonlinear excitation fields are controllably modulated between linear, circular, and various elliptical states. Polarization modulation is achieved by precise control over the time delay separating the orthogonal pulse pairs to within hundreds of attoseconds. The resultant emission from gold nanorods is imaged to a 2D array detector and correlated to the excitation field polarization and plasmon resonance frequency by Fourier transformation. Gold nanorods with length-to-diameter aspect ratios of 2 support a longitudinal surface plasmon resonance at approximately 800 nm, which is resonant with the excitation fundamental carrier wavelength. Differences in the intrinsic linear and circular dichroism resulting from variation in their relative alignment with respect to the laboratory frame enable optical differentiation of nanorods separated within 50 nm, which is an approximate 5-fold improvement over the diffraction limit of the microscope. The experimental results are supported by analytical simulations. In addition to subdiffraction spatial resolution, the vpFT-NLO method intrinsically provides the polarization- and frequency-dependent resonance response of the nanoparticlesproviding spectroscopic information content along with super-resolution imaging capabilities.https://doi.org/10.1021/cbmi.3c00008 |
| spellingShingle | Megan A. Steves Kenneth L. Knappenberger Distinguishing Single-Metal Nanoparticles with Subdiffraction Spatial Resolution Using Variable-Polarization Fourier Transform Nonlinear Optical Microscopy Chemical & Biomedical Imaging |
| title | Distinguishing Single-Metal Nanoparticles with Subdiffraction Spatial Resolution Using Variable-Polarization Fourier Transform Nonlinear Optical Microscopy |
| title_full | Distinguishing Single-Metal Nanoparticles with Subdiffraction Spatial Resolution Using Variable-Polarization Fourier Transform Nonlinear Optical Microscopy |
| title_fullStr | Distinguishing Single-Metal Nanoparticles with Subdiffraction Spatial Resolution Using Variable-Polarization Fourier Transform Nonlinear Optical Microscopy |
| title_full_unstemmed | Distinguishing Single-Metal Nanoparticles with Subdiffraction Spatial Resolution Using Variable-Polarization Fourier Transform Nonlinear Optical Microscopy |
| title_short | Distinguishing Single-Metal Nanoparticles with Subdiffraction Spatial Resolution Using Variable-Polarization Fourier Transform Nonlinear Optical Microscopy |
| title_sort | distinguishing single metal nanoparticles with subdiffraction spatial resolution using variable polarization fourier transform nonlinear optical microscopy |
| url | https://doi.org/10.1021/cbmi.3c00008 |
| work_keys_str_mv | AT meganasteves distinguishingsinglemetalnanoparticleswithsubdiffractionspatialresolutionusingvariablepolarizationfouriertransformnonlinearopticalmicroscopy AT kennethlknappenberger distinguishingsinglemetalnanoparticleswithsubdiffractionspatialresolutionusingvariablepolarizationfouriertransformnonlinearopticalmicroscopy |