AI Article Synopsis
- Light focusing through a microbead creates a photonic nanojet that improves the spatial resolution of optical systems, but there hasn't been an effective way to position these nanojets over desired areas.
- By using advanced 3D fabrication techniques, researchers integrated a microbead onto an AFM cantilever to precisely control the positioning of nanojets, which is applicable in various fields like microscopy and spectroscopy.
- The study showcases the nanojets' capabilities in imaging sub-wavelength structures while providing clear evidence and numerical simulations to validate the claims about resolution enhancement in optical applications.
Article Abstract
Light focusing through a microbead leads to the formation of a photonic nanojet functional for enhancing the spatial resolution of traditional optical systems. Despite numerous works that prove this phenomenon, a method to appropriately translate the nanojet on top of a region of interest is still missing. Here, by using advanced 3D fabrication techniques we integrated a microbead on an AFM cantilever thus realizing a system to efficiently position nanojets. This fabrication approach is robust and can be exploited in a myriad of applications, ranging from microscopy to Raman spectroscopy. We demonstrate the potential of portable nanojets by imaging different sub-wavelength structures. Thanks to the achieved portability, we were able to perform a detailed optical characterization of the resolution enhancement induced by the microbead, which sheds light into the many contradictory resolution claims present in literature. Our conclusions are strongly supported by rigorous data analysis and by numerical simulations, all in perfect agreement with experimental results.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5471276 | PMC |
| http://dx.doi.org/10.1038/s41598-017-03726-5 | DOI Listing |
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