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Super-Resolution Imaging by Dielectric Superlenses: $TiO_{2}$ Metamaterial Superlens versus $BaTiO_{3}$ Superlens
| Content Provider | MDPI |
|---|---|
| Author | Dhama, Rakesh Yan, Bing Palego, Cristiano Wang, Zengbo |
| Copyright Year | 2021 |
| Description | All-dielectric superlens made from micro and nano particles has emerged as a simple yet effective solution to label-free, super-resolution imaging. High-index $BaTiO_{3}$ Glass (BTG) microspheres are among the most widely used dielectric superlenses today but could potentially be replaced by a new class of $TiO_{2}$ metamaterial $(meta-TiO_{2}$) superlens made of $TiO_{2}$ nanoparticles. In this work, we designed and fabricated $TiO_{2}$ metamaterial superlens in full-sphere shape for the first time, which resembles BTG microsphere in terms of the physical shape, size, and effective refractive index. Super-resolution imaging performances were compared using the same sample, lighting, and imaging settings. The results show that $TiO_{2}$ meta-superlens performs consistently better over BTG superlens in terms of imaging contrast, clarity, field of view, and resolution, which was further supported by theoretical simulation. This opens new possibilities in developing more powerful, robust, and reliable super-resolution lens and imaging systems. |
| Starting Page | 222 |
| e-ISSN | 23046732 |
| DOI | 10.3390/photonics8060222 |
| Journal | Photonics |
| Issue Number | 6 |
| Volume Number | 8 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-06-15 |
| Access Restriction | Open |
| Subject Keyword | Photonics Quantum Science and Technology Telecommunications Super-resolution Imaging Dielectric Superlens Label-free Imaging Titanium Dioxide |
| Content Type | Text |
| Resource Type | Article |
