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“#Researchers develop flat lens a thousand times thinner than a human hair” The lens can be used to produce high-resolution images with a wide field of view. It can serve as a camera lens in smartphones and can be used in other devices that depend on sensors (high resolution wide angle selfie obtained using metalens….
“#Routing valley exciton emission of a monolayer via in-plane inversion-symmetry broken PhC slabs” a, PhC slabs with C4 symmetry and without in-plane inversion symmetry. By breaking the in-plane inversion symmetry, the polarization states of PhC can cover entire Poincaré sphere’s two poles. b, Illustration of photoluminescence of WS2 monolayer on the PhC slab without in-plane…
“#Lensless light-field imaging through diffuser encoding” A diffuser is placed at a small distance in front of a sensor so that a temporally incoherent point source in the detectable field-of-view generates a high-contrast pseudorandom pattern. The elementary sub-beams, represented by their center light rays, are angularly encoded in the pattern Credit: Zewei Cai, Jiawei Chen,…
“#A novel approach produces a completely new kind of dynamic light structure” Credit: CC0 Public Domain It is not every day that scientists are able to produce an entirely new kind of light, but when they do the implications can be dramatic. When twisted light beams carrying orbital angular momentum were uncovered in 1992, researchers…
“#Researchers generate attosecond light from industrial laser” Credit: Unsplash/CC0 Public Domain University of Central Florida researchers are making the cutting-edge field of attosecond science more accessible to researchers from all disciplines. Their method to help open up the field is detailed in a new study published today in the journal Science Advances. An attosecond is…
“#Plasma guides maintain focus of lasers” Lasers are used to create an indestructible optical fiber out of plasma. Credit: Intense Laser-Matter Interactions Lab, University of Maryland In science fiction, firing powerful lasers looks easy—the Death Star can just send destructive power hurtling through space as a tight beam. But in reality, once a powerful laser…
“#Trapping and controlling light at the interface of atomically thin nanomaterials” (Left) Schematic of the graphene platform used. Graphene is sandwiched between two layers of hexagonal boron nitride layers, and these are layered on top of a metagate layer. (Right) Structure of the metagate. The interface between metagates with different hole radii acts as a…
“#OCT-based technique captures subtle details of photoreceptor function” Researchers have developed a unique synchronized high-speed OCT/scanning light ophthalmoscope (SLO) system that captures the function of the retina’s rods and cones. The OCT images are co-registered with SLO images to pinpoint the location and type of photoreceptors captured in the series of 3D OCT images. The…
“#The MOF-based multicolor single-mode microlaser” a, the schematic synthesis of hierarchically dye-assembled hybrid ZJU-68 microcrystals. b-i, the optical micrographs of ZJU-68 (b) and hierarchically dye-assembled ZJU-68 microcrystals (c-i), scale bar, 10 μm. Credit: Huajun He, Yuanjing Cui, Hongjun Li, Kai Shao, Banglin Chen and Guodong Qian Since different tissues, cells or biochemicals have different (such…
“#Dynamic full-field optical coherence tomography: 3-D live-imaging of retinal organoids” a, Setup to create FFOCT and D-FFOCT images, combined with fluorescence for validation. b, 3D representation of a portion of a 28 day old (D28) hiPSC-derived retinal organoid captured with D-FFOCT, with the corresponding colorbar. c, Comparison of FFOCT and D-FFOCT images of a D29…