Results 111 to 120 of about 162,982 (292)

The Emergence of the Modern Universe: Tracing the Cosmic Web [PDF]

, 1999
This is the report of the Ultraviolet-Optical Working Group (UVOWG) commissioned by NASA to study the scientific rationale for new missions in ultraviolet/optical space astronomy approximately ten years from now, when the Hubble Space Telescope (HST) is ...
Baum, S. A., Clarke, J. T., Dupree, A. K., Hasan, H., Heckman, T., Jenkins, E. B., Kinney, A. L., Morse, J. A., Neff, S. G., Savage, B. D., Shull, J. M.   +10 more
core  

Metal-dielectric dispersive mirrors for ultraviolet lasers

Optics Express
We report a broadband metal-dielectric dispersive mirror (MDDM) based on Al/SiO2/HfO2 thin films operating in the near-ultraviolet (UV) region. Demonstrating the combined benefits of both the wide reflective bandwidth of aluminum in the UV region and the flexible dispersion control capability of HfO2/SiO2 multilayer films, the MDDM has a wide bandwidth,
Chang Liu, Yanzhi Wang, Yu Chen, Yesheng Lu, Zhihao Wang, Yukang Feng, Tiandao Chen, Yue Yu, Jinyu Pan, Zhiyuan Huang, Meng Pang, Yuxin Leng, Jianda Shao   +12 more
openaire   +2 more sources

Bioinspired Stabilization of Fluorescent Au@SiO2 Tracers for Multimodal Biological Imaging

Advanced Functional Materials, EarlyView.
This study demonstrates a bioinspired stabilization strategy for fluorescent gold‐silica nanoparticles. Inspired by natural biosilica maturation, high‐temperature calcination transforms the silica shells, preventing dissolution in cell culture media and intracellular environments.
Wang Sik Lee, Henry Lee, Patricia Taladriz‐Blanco, Dimitri Vanhecke, Barbara Rothen‐Rutishauser, Alke Petri‐Fink   +5 more
wiley   +1 more source

Liquid Phase Transmission Electron Microscopy: A Window into the Early Stages of Complex Material Formation

Advanced Functional Materials, EarlyView.
Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum, Vinavadini Ramnarain, Nathaly Ortiz Peña, Dris Ihiawakrim, Clément Sanchez, Ovidiu Ersen   +5 more
wiley   +1 more source

2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics

Advanced Functional Materials, EarlyView.
2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit, Yifei Yang, Shawn Li, Yu‐Chia Chen, Qi Jia, Jian‐Ping Wang   +5 more
wiley   +1 more source

Color Routing and Beam Steering of Single‐Molecule Emission with a Spherical Silicon Nanoantenna

Advanced Functional Materials, EarlyView.
We experimentally demonstrate broadband directional emission from single molecules using a single spherical silicon nanoparticle assembled via DNA origami. By varying nanoparticle (NP) size and emitter position, we achieve unidirectional emission, beam steering, and color routing at the nanoscale, revealing modal interference as the underlying ...
María Sanz‐Paz, Nicole Siegel, Guillermo Serrera, Javier González‐Colsa, Fangjia Zhu, Karol Kołątaj, Minoru Fujii, Hiroshi Sugimoto, Pablo Albella, Guillermo P. Acuna   +9 more
wiley   +1 more source

Mitigation techniques to reduce avian electrocution rates

Wildlife Society Bulletin, 2019
From August 2013, we undertook a 1‐year trial of mitigation techniques at an electricity power line in the Mongolian steppe with a high avian electrocution rate.
Andrew Dixon, MD Lutfor Rahman, Batbayar Galtbalt, Batbayar Bold, Batmunkh Davaasuren, Nyambayar Batbayar, Batkhuu Sugarsaikhan   +6 more
doaj   +1 more source

Understanding the Role of Superhydrophobicity and Superhydrophilicity in Salt‐Spray Corrosion of Nanosecond Pulsed Laser‐Textured AA2024 Alloy

Advanced Functional Materials, EarlyView.
Nanosecond pulse laser texturing yields superhydrophobic and superhydrophilic AA2024 surfaces. Salt‐spray tests show that periodic superhydrophobic patterns suppress pitting, whereas superhydrophilic textures enhance it, linking laser‐induced morphology, wettability, and oxide chemistry to corrosion resistance.
Lis Geraldine Zschach, Robert Baumann, Eric Pohl, Angelika Wrzesińska‐Lashkova, Marcelo Sallese, Ignacio Tabares, Herman Heffner, Yana Vaynzof, Andrés Fabián Lasagni   +8 more
wiley   +1 more source

Defect engineering in organic semiconductor based metal-dielectric photonic crystals

Scientific Reports
We investigate the band structure of metal-dielectric photonic crystals comprising stacked organic semiconductor microcavities with silver metal mirrors incorporating crystal defects: individual unit cells with aperiodic dimensionality.
Khadga S. Thakuri, Thomas Cleary, David Allemeier, Taisei Kimura, Naoya Aizawa, Ken-ichi Nakayama, Akito Masuhara, Matthew S. White   +7 more
doaj   +1 more source

Photonic Crystals and their Applications to Efficient Light Emitters [PDF]

, 2001
When combined with high index contrast slabs in which light can be efficiently guided, microfabricated two-dimensional photonic bandgap mirrors provide us with the geometries needed to confine and concentrate light into extremely small volumes and to ...
Loncar, M., Painter, O., Scherer, A., Vuckovic, J., Yoshie, T.   +4 more
core