Imaging complex media: century-old challenges solved by modern computational solutions
| Quand ? |
Le 27/05/2024, de 11:00 à 12:00 |
|---|---|
| Où ? | Salle des Thèses |
| S'adresser à | Julian Tachella |
| Participants |
Hilton de Aguiar |
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Imaging complex media with high-resolution (sub-um) is a challenge with widespread applications in various industrial and fundamental research settings. The challenge is that complex media has high physical (e.g. refractive index) and chemical changes. The refractive index fluctuations lead to multiple scattering, which limits imaging penetration depth. The chemically complex environments often demand exogeneous chemical probes, which may affect the probed system.
In this presentation, I will introduce broadly the current challenges for (i) high-resolution deep imaging and for (ii) high-speed chemically-selective imaging using the Raman effect. I will discuss what are the current challenges in these approaches, particularly focusing on the lack of penetration depth with high-resolution, and why we need high-speed chemical imaging. Our group has been tackling these issues using a computational microscopy tactic: a synergistic blend of algorithms and non-conventional optical hardware altogether helps to overcome these challenges.