Request InfoPolyScienceFunctionalized silica microspheres that contain carboxylic acid, amine or streptavidin groups are available from Polysciences Inc. Nominal diameters are 0.5, 1 and 5 μm to accommodate specific assays. The carboxylic and amine materials are supplied as 100% solids, and the streptavidin types are offered as a 1% dispersion in water. The company says that, compared with polymer versions, the silica microspheres feature a lower refractive index, greater density for easier settling, and a hydrophilic surface that reduces the nonspecific binding of hydrophobic ligands.See full productRelated content from Photonics MediaWEBINARSPhotonics.com 3/27/2024Precision Planning: Simplified Laser Scanning with Predictive SoftwareConventional controllers for laser scan systems do not allow to predict the actual path of the laser beam on the work piece. A tedious process of testing different parameters and delay settings...Photonics.com 1/18/2018Fiberguide RARe Motheye Fiber: Random Anti-Reflective (RARe) Nanostructures on Optical Fibers as Replacement for AR CoatingsAnti-reflective (AR) coatings are now entering their second century and have remained virtually unchanged throughout their life. As power level and wavelength range requirements continue to increase,...Photonics.com 10/27/2021Fiber Optic Solutions for Medical DevicesSteve Allen provides a brief overview and examples of procedures that continue to push adoption and proliferation of optical fiber-based medical devices. From cosmetic surgery to cutting-edge sensing...Photonics.com 7/22/2021STANDARDS UPDATE: Vision Standards: An Overview of Global and A3 DevelopmentsStandards play a key role in the vision and imaging industry by ensuring interoperability of components, increasing market size, and shortening the time it takes to get new products to market. As the...