University of Birmingham > Talks@bham > Cold atoms > From black holes to bio-imaging or the last 6 yeas of my research

From black holes to bio-imaging or the last 6 yeas of my research

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If you have a question about this talk, please contact Dr Giovanni Barontini.

Seminar on Monday

The talk will cover a couple of topics starting with detailed explanation of the uses of interferometric scattering microscopy (iSCAT) in the context of tracking the diffusion of single transmembrane proteins within a live cell membrane. Tracking such proteins requires very high spatial and temporal resolution that should be sustained over long duration. iSCAT microscopy exploits coherent interference between sample-scattered light and a homodyne reference to measure weakly scattered signals. The interferometric nature of the imaging is thus sensitive to the fine three-dimensional motion of a gold nano-probe attached to the cell membrane, which we are able to track with nanometric precision at the fast microsecond time scale.

Further I will give an introduction to analogue gravity in the context of transformational optics. One way of explaining the physics around the event horizon of a black hole is to consider space itself as flowing towards the singularity. By using nonlinear media we can mimic this flow by a moving laser induced refractive index perturbation thus emulating the former mentioned flow of space. Under appropriate conditions such perturbation can create an effective blocking horizon for light and be used for further studies on Hawking emission.

This talk is part of the Cold atoms series.

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