About InVi SPIM Lattice Pro

Light sheet microscopy is well-suited to live imaging of relatively fast biological processes due to its relatively high speed, high signal-to-noise ratio, low phototoxicity and low photobleaching. The lattice light-sheet microscope takes the modality one step further, into the realm of super-resolution.

(Above) wild-type (left) and diseased (right) heart of zebrafish in high-speed video. Samples prepared by Cathleen Teh (lab of Thorsten Wohland); imaging by Cathleen Teh and Lin Yangchen.

The InVi SPIM Lattice Pro has one illumination objective and one detection objective. It can accommodate both thin and relatively thick samples thanks to the long working distance (approx. 2 mm) of the detection objective. The inverted configuration allows the use of recessed holders that position samples deeper into the space between the objectives than is possible with regular slides or dishes. This allows the use of an objective of high NA.

(Above) maximum-intensity Z-projection of dynamics of U2OS cells. Sample prepared by Zhu Chennianci (lab of Liou Yih-Cherng); imaging and deconvolution by Zheng Chao and Goh Wei Jia.

Beam patterns are generated by a spatial light modulator that has been calibrated to correct for wavefront aberrations. The measured FWHM of sub-resolution beads imaged with the thinnest Gaussian beam are 288 by 320 by 672 nm. Lattice patterns make super-resolution SIM possible. Users can also install their own SLM patterns.

The system is also capable of imaging fluorescence correlation spectroscopy at up to about 10,000 frames a second (small ROI) using the Fiji ImFCS plugin developed by our Biophysical Fluorescence Laboratory.