"Illumination microscopy" refers to a method of viewing tiny objects, such as cells or microorganisms, under a microscope. It involves using specific types of light to illuminate the sample, making it easier to see and study its details.
Full definition
The new methods dramatically improve on the spatial resolution provided by
structured illumination microscopy, one of the best imaging methods for seeing inside living cells.
In 2004 Jan Huisken of the Max Planck Institute of Molecular Cell Biology and Genetics and colleagues published a paper establishing structured
plane illumination microscopy, or SPIM, and the field has been booming ever since.
The researchers are the first to use a new state of the art super resolution imaging technique —
structural illumination microscopy (SIM) to observe detailed images of how the drug affects the structure of primary cilia.
The technique, called microenvironmental selective plane
illumination microscopy (meSPIM), uses exceptionally long, thin beams of laser light to trigger fluorescence in a sample, causing it to glow.
Developed by Hari Shroff, Ph.D., and his team at the National Institute of Biomedical Imaging and Bioengineering (NIBIB), this new microscope improves on a previously developed microscope, combining two - photon laser scanning microscopy (2PM) and instant structured
illumination microscopy (ISIM) by including adaptive optics (AO) to rapidly correct distortions.
The new multi-view approach helps improve a technique the researchers previously developed called dual - view plane
illumination microscopy (diSPIM).
Betzig says Bessel beam plane
illumination microscopy is «ready» for commercialization.
She was making use of the newest version of a breakthrough technique that Betzig unveiled in 2011, called Bessel beam plane
illumination microscopy.
The «brilliantly simple» idea, as Betzig calls it, of using a sheet of light to reduce cell damage is called plane
illumination microscopy.
The second microscope, described in a paper published in Nature Biotechnology online on October 13, builds on selective plane
illumination microscopy (SPIM).
Shroff and his research fellow Andrew York, Ph.D., found an answer to these problems with their new instant linear structured
illumination microscopy (iSIM), described in a paper published in Nature Methods on October 6th.
Traditional linear structured
illumination microscopy (SIM) can not maintain the high resolution desired by researchers when the sample is moving quickly.
Several more researchers presented their work during the day, including protein synthesis at atomic resolution, bio-imaging opportunities at synchrotrons, multi-dimensional imaging during plant cell differentiation, how to use electron cryomicroscopy for in situ structural biology, and how structured
illumination microscopy can offer insights into the regulation of mammalian meiosis.
Furthermore, the microscope will be capable of performing live - cell super-resolution imaging through structured
illumination microscopy (SIM) and Super-Resolution Radial Fluctuations (SRRF); for fixed cells resolutions on the scale of tens of nanometres will be achievable using single molecule localization microscopy (SMLM) techniques.
In super-resolution microscopy, the moiré pattern can be used to obtain images with a resolution higher than the diffraction limit, using a technique known as structured
illumination microscopy.
(Hayashi S. Resolution doubling using confocal microscopy via analogy with structured
illumination microscopy.