K. Yanny, N. Antipa, W. Liberti, S. Dehaeck, K. Monakhova, F. L. Liu, K. Shen, Ren Ng, and L. Waller, “Miniscope3D: optimized single-shot miniature 3D fluorescence microscopy,” Light Sci Appl. 9, 171 (2020). https://doi.org/10.1038/s41377-020-00403-7
Under the leadership of Laura Waller, researchers from the University of California, Berkeley, have reported a lightfield miniscope that is much smaller and lighter than previous ones, and that provides with 3D images with unprecedent resolution over a very large depth of field.
The 3D miniscope is based in the smart combination of three bright ideas: the Fourier lightfield concept, the use of an optimized multifocal phase mask, and the application of a rendering algorithm based on sparsity-constrained inverse methods
Miniscope3D system overview (From: Miniscope3D: optimized single-shot miniature 3D fluorescence microscopy)
Based on those concepts, authors have built a demonstration prototype composed basically by a GRIN-lens objective, a phase mask inserted at the Fourier plane and a CMOS sensor placed at the mean focal length of the phase mask. With this prototype, authors have demonstrated the capability of render 3D images of sparse fluorescent samples with lateral resolution of across a depth of 2,76µm across a depth of 390µm.
In this paper the Miniscope3D demonstrates its utility providing 3D images of mouse brain tissue and also of freely moving tardigrades. In summary, the miniscope3D provides single-shot 3D imaging for applications where a compact platform matters, such as volumetric neural imaging in freely moving animals and 3D motion studies of dynamic samples in incubators and lab-on-a-chip devices.
Commented by Dr. Manuel Martínez