4/12/2023 0 Comments Dynamic light scatterMetasurfaces are composed of two-dimensional (2D) arrays of subwavelength resonant scatterers, which locally and abruptly change the characteristic properties of the impinging light, i.e., its amplitude, phase, polarization, spectrum, and momentum. Today, with the large advances in micro- and nanofabrication in recent decades, researchers are developing next-generation flat optical components that mold the wavefront of light at a subwavelength scale, giving rise to versatile and unprecedented control over light. In these constructs, optical wavefronts are controlled using bulky optical elements which have a thickness of few millimeters. Prominent examples include the invention of the telescope for ‘seeing things far away as if they were nearby’ and the development of the first photographic camera to capture the visual information in a scene. Ever since, scientists have strived to understand and control the properties of light, leading to a variety of advanced technologies that are now fundamental to society. The unique function of these lenses enabled the eyes to appear to ‘follow’ the viewer as they moved around the statue. The first reported optical lens, dating to the Ancient Egyptian era (2620 BC), employed convex polished rock crystals to form the eyes of ornate statues. Specifically, we describe approaches for high performance active metasurfaces, examine pathways for achieving two-dimensional control architectures, and discuss operating configurations for optical imaging, communication, and computation applications based on a universal active metasurface. In this article, we discuss strategies for the realization of this goal. A ‘universal’ active metasurface should be able to provide independent and continuous control over all characteristic properties of light for deterministic wavefront shaping. In principle, active metasurfaces are capable of controlling key characteristic properties of an electromagnetic wave, such as its amplitude, phase, polarization, spectrum, and momentum. Here, application of an external stimulus to resonant subwavelength scatterers enables dynamic control over the wavefront of reflected or transmitted light. Please follow the link to our light scattering theory page to learn more about dynamic and static light scattering theory.In recent years, active metasurfaces have emerged as a reconfigurable nanophotonic platform for the manipulation of light. Owing to the technique’s high sensitivity towards large species, even small impurities caused by aggregation can be detected Owing to its large measurement range (0.5 nm – 1 µm) DLS closes the gap between the range of small soluble aggregates that are detected via size exclusion chromatography (SEC) and particles analyzed by methods such as light obscuration (LO) or micro flow imaging (MFI). ZentriForce Pharma offers DLS services under BSL 1 and 2.ĭynamic light scattering is known as a fast and sensitive screening method for aggregate / particle detection and therefore widely used within biopharmaceutical development. We routinely conduct biosimilarity and gene therapy studies and are furthermore experienced in the development of dynamic light scattering (DLS) methods for a large variety of samples. Zentriforce Pharma is a contract research organization that specializes in analytical services with a focus on hydrodynamic methods.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |