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Optics, Chemistry, Materials Sciences Use Light to Manipulate Light

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Researchers from the University of Pittsburgh’s Swanson School of Engineering, Harvard University, and McMaster University have revealed a hydrogel that can respond to optical stimuli and modify the stimuli in response. A convergence of optical, chemical, and materials sciences has revealed a way to use light to control the local dynamic behavior within a material. The illuminated material mimics the ability of the iris and pupil to dynamically respond to incoming light. Once the light enters the sample, the material itself modifies the behavior of the light, trapping it within...Read full article

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    Published: February 2020
    Glossary
    hydrogel
    A hydrogel is a three-dimensional network of polymer chains that are hydrophilic, meaning they have a strong affinity for water. This network structure allows hydrogels to absorb and retain large amounts of water while maintaining their structural integrity. Hydrogels are often soft and flexible, resembling natural tissues, which makes them useful in various biomedical, pharmaceutical, and engineering applications. Hydrogels can be synthesized from natural or synthetic polymers. Natural...
    adaptive optics
    Adaptive optics (AO) is a technology used to improve the performance of optical systems by reducing the effects of atmospheric distortions. The Earth's atmosphere can cause light passing through it to experience distortions, resulting in image blurring and degradation in various optical applications, such as astronomical observations, laser communications, and imaging systems. Adaptive optics systems actively adjust the optical elements in real-time to compensate for these distortions. Key...
    Research & TechnologyUniversity of PittsburghSwanson School of EngineeringHarvard UniversityMcMaster UniversityhydrogelProceedings of the National Academy of Scienceschemical engineeringchromophoresgelatineself-trappingsoft roboticsoptical computingadaptive opticsUS Army Research OfficeNatural Sciences and Engineering Research CouncilCanadian Foundation for InnovationOpticsMaterialsTech Pulse

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