Journal
SCIENTIFIC REPORTS
Volume 10, Issue 1, Pages -Publisher
NATURE RESEARCH
DOI: 10.1038/s41598-020-67409-4
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Funding
- Human Plus Convergence R&D Program - National Research Foundation of Korea [NB0070]
- Global Frontier Project - Center for Advanced Meta-Materials (CAMM) [CAMM-2014M3A6B3063701]
- Ministry of Science, ICT and Future Planning
- Industrial Strategic Technology Development Program - Ministry of Trade, Industry, & Energy (MOTIE, Korea) [MO9500]
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During our research, we explored a novel way to represent subwavelength imaging and derived a transmission equation to explicate the FP (Fabry-Perot) resonance phenomena. Subsequently, using analysis and observation, we performed deep-subwavelength imaging. Both numerically and experimentally, imaging with super-resolution was achieved at deep subwavelength scale of lambda/56.53 with a lens thickness 212 mm. Our results also showed that by increasing lens thickness, higher resolution can be achieved. Moreover, via a single source study, we showed the full width at half maximum range and predicted the size of smallest detectable object. We also observed that with a greater lens thickness, finer features could be detected. These findings may open a new route in near-field imaging for practical applications such as biometric sensors, ultrasonic medical equipment, and non-destructive testing.
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