Silver Grain Detection
Silver Grain Detection - Related Videos
06:52
Nanocrystalline Alloys and Nano-grain Size Stability
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2023
Source: Sina Shahbazmohamadi and Peiman Shahbeigi-Roodposhti-Roodposhti, School of Engineering, University of Connecticut, Storrs, CT Alloys with grain size less than 100 nm are known as nanocrystaline alloys. Due to their enhanced physical and mechanical properties, there is an ever-increasing demand to employ them in various industries such as semiconductor, biosensors and aerospace. To improve the processing and application of nanocrystalline alloys, it is necessary to develop close to 100%...
09:51
Atom Probe Tomography Studies on the Cu(In,Ga)Se2 Grain Boundaries
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Cited by 29 •
2013
In this work, we describe the use of the atom-probe tomography technique for studying the grain boundaries of the absorber layer in a CIGS solar cell. A novel approach to prepare the atom probe tips containing the desired grain boundary with a known structure is also presented here.
05:57
Detection of Glycosaminoglycans by Polyacrylamide Gel Electrophoresis and Silver Staining
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Cited by 4 •
2021
This report describes techniques to isolate and purify sulfated glycosaminoglycans (GAGs) from biological samples and a polyacrylamide gel electrophoresis approach to approximate their size. GAGs contribute to tissue structure and influence signaling processes via electrostatic interaction with proteins. GAG polymer length contributes to their binding affinity for cognate ligands.
05:45
A Method to Fabricate Disconnected Silver Nanostructures in 3D
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Cited by 9 •
2012
Femtosecond-laser direct-writing is frequently used to create three-dimensional (3D) patterns in polymers and glasses. However, patterning metals in 3D remains a challenge. We describe a method for fabricating silver nanostructures embedded inside a polymer matrix using a femtosecond laser centered at 800 nm.
09:13
Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction
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Cited by 8 •
2017
This paper provides a detailed method to characterize the microstructure of ultra-fine grained and nanocrystalline materials using a scanning electron microscope equipped with a standard electron backscatter diffraction system. Metal alloys and minerals presenting refined microstructures are analyzed using this technique, showing the diversity of its possible applications.
FAQs
After a radioisotope becomes incorporated into or binds a biological target, its emitted radiation reaches nearby silver halide crystals in the photographic emulsion. Development then reduces the affected crystals to metallic silver, creating visible grains. Because the grains form near the emission source, their location provides spatial evidence for where the labeled molecule or structure was situated.
Grain density provides a relative measure of radioactive signal rather than a standalone description of target identity. Researchers can use grain locations to identify labeled cells, organelles, nucleic acids, or molecular sites, then consider density when comparing signal across biological regions. This separates spatial localization from relative assessment of labeling intensity.
The microscopy approach determines the biological level at which grain distribution is examined. Light microscopy can be used to assess labeled cells and tissue organization, while electron microscopy supports examination of labeled subcellular structures such as organelles. Selecting between them helps align the observation with the scale of the biological question.
The workflow begins with a biological sample containing an incorporated or bound radioisotope. The sample is associated with photographic emulsion, whose silver halide crystals can respond to nearby radiation. Development converts affected crystals into metallic silver grains, and microscopy is then used to examine their distribution. This sequence links tracer presence with an observable cellular location.
Silver Grain Detection can reveal where radioactive tracers associate with biological structures or activities. In biology, researchers apply it to investigate DNA and RNA synthesis, identify cells undergoing division, localize receptors, and examine tissue organization. The resulting grain patterns provide both positional information and, through grain density, a relative indication of radioactive signal.
By locating grains within cells, organelles, nucleic acids, or broader tissue regions, the method connects radioactive labeling with biological structure. This makes it useful for relating molecular events such as nucleic acid synthesis or receptor localization to cell distribution and tissue architecture. Microscopic examination preserves that spatial relationship during interpretation.