Large-area super-resolution optical imaging by using core-shell microfibers

Liu, Chengyang; Lo, Wei Chieh

doi:10.1016/j.optcom.2017.04.047

Cited by 9 publications

(2 citation statements)

References 35 publications

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“…Due to the surface plasmonic properties due to thin metal films, high-definition imaging was obtained compared to the microsphere and microcylinder counterparts. The gold shell produced the best resolution and magnification, with higher contrast [ 223 ]. Hence, it was shown by the group that with GLAD-based metallic coating, the intensity of a photonic nanojet can be adjusted and higher-definition imaging is possible.…”

Section: Biosensing Applications Of Glad-fabricated Nanostructuresmentioning

confidence: 99%

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GLAD Based Advanced Nanostructures for Diversified Biosensing Applications: Recent Progress

et al. 2022

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Glancing angle deposition (GLAD) is a technique for the fabrication of sculpted micro- and nanostructures under the conditions of oblique vapor flux incident and limited adatom diffusion. GLAD-based nanostructures are emerging platforms with broad sensing applications due to their high sensitivity, enhanced optical and catalytic properties, periodicity, and controlled morphology. GLAD-fabricated nanochips and substrates for chemical and biosensing applications are replacing conventionally used nanomaterials due to their broad scope, ease of fabrication, controlled growth parameters, and hence, sensing abilities. This review focuses on recent advances in the diverse nanostructures fabricated via GLAD and their applications in the biomedical field. The effects of morphology and deposition conditions on GLAD structures, their biosensing capability, and the use of these nanostructures for various biosensing applications such as surface plasmon resonance (SPR), fluorescence, surface-enhanced Raman spectroscopy (SERS), and colorimetric- and wettability-based bio-detection will be discussed in detail. GLAD has also found diverse applications in the case of molecular imaging techniques such as fluorescence, super-resolution, and photoacoustic imaging. In addition, some in vivo applications, such as drug delivery, have been discussed. Furthermore, we will also provide an overview of the status of GLAD technology as well as future challenges associated with GLAD-based nanostructures in the mentioned areas.

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Section: Biosensing Applications Of Glad-fabricated Nanostructuresmentioning

confidence: 99%

“…( b ) Core-shell microfiber shown in the setup whereby the core shell consists of metallic films deposited by GLAD ( c ) Core shell microfiber placed on the top of the specimen. Reproduced with permission from [ 223 ].…”

Section: Figurementioning

confidence: 99%

GLAD Based Advanced Nanostructures for Diversified Biosensing Applications: Recent Progress

et al. 2022

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Apodization‐Assisted Subdiffraction Near‐Field Localization in 2D Phase Diffraction Grating

Geints

Minin

2019

Annalen der Physik

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Conventional phase diffraction gratings can be used to localize the incoming optical radiation in the near-field region. A new design of the binary phase diffraction grating is proposed with embedded pupil opaque mask inside each stripe. By means of numerical simulations, it is shown that with this masked phase grating the spatial resolution of the near-field localization can be substantially improved and brought even beyond the solid immersion limit (λ/2n). Moreover, due to anomalous apodization effect, the subdiffraction field localization is accompanied by intensity enhancement as compared to the non-masked design. The pupil mask rearranges the optical fluxes within the stripes and promotes the Fano resonances excitation in the periodic step lattice. This can be important for advancing the phase grating-based super-resolution technologies, including subdiffraction imaging, interferometry, and surface fabrication.

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