Results 221 to 230 of about 41,921 (296)

Direct Fabrication of Inclined-Sidewall Microgrooves with Shaped Flat-Top Beams. [PDF]

Materials (Basel)
Mao J, Chen W, Chen K, Li X, Tan Y, Li M, Zhang L.   +6 more
europepmc   +1 more source

Frozen Differential Scattering in Reconfigurable Complex Media

Laser &Photonics Reviews, EarlyView.
A localized perturbation universally results in a rank‐one update of the scattering matrix of any complex medium. The resulting differential output wavefront is “frozen”: its spatial pattern is fixed (agnostic to the input wavefront). Experiments with a programmable‐metasurface‐parametrized wireless link validate frozen differential scattering and ...
Philipp del Hougne
wiley   +1 more source

An Epsilon-Near-Zero-Based Nonlinear Platform for Ultrafast Re-Writable Holography. [PDF]

Nanophotonics
Alam MZ, Fickler R, Zhou Y, Giese E, Upham J, Boyd RW.   +5 more
europepmc   +1 more source

Nonlinear Resonance Modulation in Single‐Crystalline VO2‐Integrated Si Ring Resonator

Laser &Photonics Reviews, EarlyView.
This work first demonstrates a single‐crystalline VO2–Si hybrid ring resonator. The epitaxial lift‐off process enables high‐quality VO2 integration on the dissimilar Si photonic platform. The high‐quality VO2 film exhibits exceptional nonlinear resonance modulation and a steep optical transition across the metal‐insulator transition. ABSTRACT The metal‐
Sebae Park, Dong Kyu Lee, Junyeop Kim, Sungwon Lee, Heedeuk Shin, Junwoo Son   +5 more
wiley   +1 more source

Synchrotron radiation based analyzer-free dual-phase dark-field lung imaging approach for radiography and CT. [PDF]

Sci Rep
Spindler S, Pereira A, Organista C, Zdora MC, Lovric G, Lautizi G, Dullin C, Contillo A, Longo E, Sodini N, D'Amico L, Romano L, Jefimovs K, Josell D, Rawlik M, Tromba G, Stampanoni M.   +16 more
europepmc   +1 more source

Novel Sulfur‐Rich Polymers from Inverse Vulcanization as Functional Building Blocks for Photonics

Macromolecular Rapid Communications, EarlyView.
Isopropenyl aromatic comonomers, in particular novel 2,7‐diisopropenylfluorene and 2,8‐diisopropenyldibenzothiophene, synthesized by sustainable, facile, single‐step SMCCR from available brominated substrates are exploited in the Inverse Vulcanization process to obtain functional Sulfur‐rich macromolecular materials.
Raimondo Insogna, Fabiano Martorelli, Daniela Di Fonzo, Martina Martusciello, Roberto Utzeri, Angelo Angelini, Davide Comoretto, Paola Stagnaro   +7 more
wiley   +1 more source

De-coherent parallel laser processing of ultradense nanopores for high-density, large-area 3D optical phase encoding. [PDF]

Nat Commun
Jiang Z, Hu J, Zhong L, Zhu Y, Zhang J, Zhao W, Qiu J.   +6 more
europepmc   +1 more source

Defect Passivation via Plasma Modification of Lead Halide Perovskite Thin Films

Progress in Photovoltaics: Research and Applications, EarlyView.
We demonstrate that exposure of perovskite thin films to diffuse coplanar surface barrier discharge nitrogen plasma leads to an increase in photoluminescence, attributed to reduced defect densities. This results in implied open‐circuit voltage improvement of up to 80 mV and finalized solar cell open‐circuit gains up to 60 mV.
Ales Vlk, Robert Hlavac, Lucie Landova, Mykhailo Khytko, Swarnendu Banerjee, Julius Vida, Jiří Fujera, Mostafa Othman, Aïcha Hessler‐Wyser, Christophe Ballif, Christian Wolff, Tomas Homola, Martin Ledinsky   +12 more
wiley   +1 more source

Quasi-random square gabor spiral zone plates for high-order diffraction suppression and multi-functional optical vortex generation. [PDF]

PLoS One
Hu H, Ding J, Wu W, Xu H, Shi G, Li H.
europepmc   +1 more source

Cryostratigraphy of Rhythmic Segregated Ice in Colluvium and Implications for Permafrost Slope Stability

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT The amount and stratigraphic setting of ground ice in permafrost slopes is a key control on the style and magnitude of permafrost mass wasting. Understanding the spatial and stratigraphic variations in ground ice distribution on permafrost slopes is therefore a fundamental property in assessing the stability of permafrost hillslopes.
Joseph M. Young, Alejandro Alvarez, Duane Froese   +2 more
wiley   +1 more source