Thermally Adaptive Surface Microscopy for brain functional imaging
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arXiv
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| Format: | Preprint |
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2025
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| author | Robert, Hadrien L. M. Faini, Giulia Liu, Chang F. Rutz, Nadja Aggoun, Anis Putti, Elena Garcia-Guirado, Jose Del Bene, Filippo Quidant, Romain Tessier, Gilles Berto, Pascal |
| author_facet | Robert, Hadrien L. M. Faini, Giulia Liu, Chang F. Rutz, Nadja Aggoun, Anis Putti, Elena Garcia-Guirado, Jose Del Bene, Filippo Quidant, Romain Tessier, Gilles Berto, Pascal |
| contents | Fluorescence microscopes can record the dynamics of living cells with high spatio-temporal resolution in a single plane. However, monitoring rapid and dim fluorescence fluctuations, e.g induced by neuronal activity in the brain, remains challenging for 3D-distributed emitters due to out-of-focus fluorescence background, a restricted photon budget, and the speed limit of conventional scanning systems. Here, we introduce a Thermally Adaptive Surface strategy, capable of simultaneously recording, at camera framerate, the activity of 3D-distributed objects. This innovative microscope leverages on an array of thermally tuneable microlenses that offer low chromatic aberration and high transmission, and can be combined with patterned illumination to provide optical sectioning. We demonstrate its potential in vivo, by simultaneously monitoring fast fluorescent dynamics at different depths in the zebrafish larval brain, at a rate of 0.5 kHz and over a large field of view (360um x 360um). |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_03965 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Thermally Adaptive Surface Microscopy for brain functional imaging Robert, Hadrien L. M. Faini, Giulia Liu, Chang F. Rutz, Nadja Aggoun, Anis Putti, Elena Garcia-Guirado, Jose Del Bene, Filippo Quidant, Romain Tessier, Gilles Berto, Pascal Optics Fluorescence microscopes can record the dynamics of living cells with high spatio-temporal resolution in a single plane. However, monitoring rapid and dim fluorescence fluctuations, e.g induced by neuronal activity in the brain, remains challenging for 3D-distributed emitters due to out-of-focus fluorescence background, a restricted photon budget, and the speed limit of conventional scanning systems. Here, we introduce a Thermally Adaptive Surface strategy, capable of simultaneously recording, at camera framerate, the activity of 3D-distributed objects. This innovative microscope leverages on an array of thermally tuneable microlenses that offer low chromatic aberration and high transmission, and can be combined with patterned illumination to provide optical sectioning. We demonstrate its potential in vivo, by simultaneously monitoring fast fluorescent dynamics at different depths in the zebrafish larval brain, at a rate of 0.5 kHz and over a large field of view (360um x 360um). |
| title | Thermally Adaptive Surface Microscopy for brain functional imaging |
| topic | Optics |
| url | https://arxiv.org/abs/2501.03965 |