Optical Scanning
Optical Scanning - Related Videos
08:31
Three-dimensional Optical-resolution Photoacoustic Microscopy
0 Views •
Cited by 27 •
2011
Optical-resolution photoacoustic microscopy (OR-PAM) is an emerging technology capable of imaging optical absorption contrasts in vivo with cellular resolution and sensitivity. Here, we provide a visualized instruction on the experimental protocols of OR-PAM, including system configuration, system alignment, typical in vivo experimental procedures, and functional imaging schemes.
09:40
A Scanning Electron Microscopy-Compatible Optical Imaging Method for Mesoscopic All-Cell Brain Mapping
0 Views •
2026
We introduced a novel imaging technique called Optical Multilayer Interference Tomography (OMLIT), which enables unbiased imaging of all cells in brain specimens at the mesoscale and can be seamlessly integrated into the imaging workflow of tape-based serial scanning electron microscopy on the same sample.
06:19
In Vivo Imaging of Cx3cr1gfp/gfp Reporter Mice with Spectral-domain Optical Coherence Tomography and Scanning Laser Ophthalmoscopy
0 Views •
Cited by 5 •
2017
This protocol describes how high-resolution imaging techniques such as spectral domain optical coherence tomography and scanning laser ophthalmoscopy can be utilized in small rodents, using an ophthalmic imaging platform system, to obtain information on retinal thickness and microglial cell distribution, respectively.
02:28
Leaky Scanning
0 Views •
2020
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R stands for...
13:58
Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics
0 Views •
Cited by 1 •
2016
This paper reports the nanomaterial fabrication of a fullerene Si substrate inspected and verified by nanomeasurements and molecular dynamic simulation.
FAQs
The measured optical response and the way it relates to the sample determine the information obtained. Changes in transmitted, reflected, absorbed, or emitted light can be organized as spatial or compositional differences, allowing a scan to indicate variation in concentration, structure, or distribution. Interpretation therefore depends on linking signal changes to the biochemical property being examined.
These signal modes provide different ways to represent a sample's optical behavior. Transmission records light passing through the preparation, whereas reflection concerns returned light; absorption and emission capture other changes in the detected optical signal. Selecting or comparing these responses helps researchers build maps suited to the sample and the property they want to examine.
Scanning individual points preserves localized information, while scanning defined regions supports organized comparison across a broader area. This choice affects how the resulting map represents biochemical variation: point-by-point measurements can distinguish changes at separate locations, whereas region-based measurements can summarize patterns across selected portions of a gel, membrane, or other preparation.
A focused beam concentrates illumination at a selected location, and a patterned beam organizes illumination across a designed spatial arrangement. In both cases, beam placement determines where optical information originates. Moving or applying that pattern across the preparation lets the detector associate signal changes with locations, which is essential for interpreting spatial distributions.
A basic workflow begins by positioning the biochemical preparation for optical examination and selecting the region or points to be measured. The beam then illuminates the sample while a detector records the relevant optical response. Those measurements are converted into a signal map, which can be inspected for spatial differences or compared quantitatively across samples or regions.
Optical scanning can be applied to biomolecules, labeled samples, gels, membranes, and other biochemical preparations. The appropriate target depends on whether the experiment seeks information about concentration, structure, or distribution. Because the method records optical behavior without direct physical contact, it can examine prepared samples while avoiding contact during measurement.
Comparing signal maps from different sample states can track biochemical change. Differences in transmitted, reflected, absorbed, or emitted light may reveal altered concentration, structure, or distribution when the optical response is linked to those properties. This makes the approach useful for monitoring changes rather than only documenting a single state.
The resulting map can support sensitive visualization and quantitative comparison of biochemical preparations. Researchers may examine where signals differ, how strongly regions contrast, and whether the pattern corresponds to changes in concentration, structure, or distribution. In biochemistry, this provides a spatially organized way to interpret biomolecules, labels, gels, membranes, and related samples.