metalenses
Traditionally, metalenses offer either spatial or spectral control of light, not both. However, a new metalens developed by researchers from Columbia University and the City University of New York offers both functionalities.
Read MoreVacuum UV light, while beneficial in biomedical and nanoprocessing applications, is difficult to generate and control using current methods. Researchers led by Rice University developed a metalens that can both generate and manipulate vacuum UV light.
Read MoreTraditionally, metalenses use nanoscale arrays of columns or fin-like structures to focus light. In a new open-access paper, researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences developed a metalens that uses very deep, very narrow holes instead.
Read MoreGallium nitride-based blue LEDs are typically grown on patterned sapphire substrates that are imaged using SEM and optical microscope systems to ensure the substrate has the correct structure. Researchers in Taiwan developed a new gallium nitride-based metalens that improves the clarity of substrate images.
Read MoreMetalenses are an emerging technology for controlling light that could someday replace traditional lenses. However, they generally lack dynamic control over their optical properties and are limited to passive optical applications. Researchers from the United States and Italy investigated infiltrating metalenses with liquid crystals to allow for dynamic control.
Read MoreMetalenses, or flat surfaces that use nanostructures to focus light, are poised to revolutionize cameras, sensors, and displays—if the lenses can be mass produced. Researchers at the Harvard School of Engineering and Applied Sciences found deep-ultraviolet projection lithography can solve this production challenge.
Read MoreChemical vapor deposition advancements, negative capacitance in ferroelectric materials, and other materials stories that may be of interest for January 30, 2019.
Read MoreMetalenses, a type of metasurface used for focusing light, could replace glass in cameras and imaging systems. Two recent studies advance this possibility.
Read MoreSplitting crystals for 2-D metallic conductivity, nature-inspired design for new electrode could boost supercapacitors’ performance, and other materials stories that may be of interest for March 7, 2018.
Read More