Results 81 to 90 of about 3,596 (198)

Interlayer‐Catalyst Method for Metal‐Assisted Chemical Etching of Ultra‐High Aspect Ratio Silicon Nanostructures

Small Methods, EarlyView.
An advanced patterning method is presented for metal‐assisted chemical etching. The interlayer replaces the resist and enables catalyst deposition on a clean interface. The prepared samples show improved performance with a more reproducible etching profile, higher aspect ratio, and increased consistency over a larger area.
Bryan Peter Jost Benz, Marco Stampanoni, Lucia Romano   +2 more
wiley   +1 more source

Ultracompact Electroabsorption Modulators Based on Tunable Epsilon-Near-Zero-Slot Waveguides

IEEE Photonics Journal, 2012
We present a promising application of epsilon-near-zero (ENZ) materials in optical modulators. When a thin ENZ film is sandwiched in a single-mode waveguide, an ENZ-slot waveguide is formed, where the absorption can be greatly enhanced.
Zhaolin Lu, Wangshi Zhao, Kaifeng Shi
doaj   +1 more source

Unveiling Van Der Waals Forces and Associated Hamaker Constants Across the Nanomaterial Landscape With Advanced Atomic Force Microscopy

Small Methods, EarlyView.
Van der Waals interactions are reviewed through the lens of advanced atomic force microscopy, highlighting recent progress in nanoscale quantification of Hamaker constants. Emerging methodologies enable high‐resolution mapping of intermolecular forces in 2D materials and biological systems, bridging experimental measurements with quantum‐informed ...
Amir Farokh Payam, Horacio V. Guzman, Alexandre Tkatchenko   +2 more
wiley   +1 more source

Design and Analysis of a Miniature Intensity Modulator Based on a Silicon-Polymer-Metal Hybrid Plasmonic Waveguide

IEEE Photonics Journal, 2014
We propose a miniature optical intensity modulator based on a silicon-polymer-metal hybrid plasmonic waveguide. Benefiting from the high mode confinement of hybrid plasmonic waveguide and the high linear electro-optic effect of polymer material, the ...
Xiaomeng Sun, Linjie Zhou, Haike Zhu, Qianqian Wu, Xinwan Li, Jianping Chen   +5 more
doaj   +1 more source

Self‐Assembly Enabled Mie‐Scattering in Hematite Nanoplatelet Stacks

Nanophotonics, Volume 15, Issue 16, 26 August 2026.
The spectral evolution during the electrolyte‐induced self‐assembly of 120 × 20 nm hematite nanoplatelets into vertical stacks in aqueous solutions is investigated. Optical simulations and correlative electron microscopy/single particle spectroscopy confirm that a collective magnetic dipole mode develops in the assembling stacks.
Péter Márton, Dániel Zámbó, András Deák   +2 more
wiley   +1 more source

Tunable Unidirectional Guided Resonances via Multi‐Singularity Interactions in Momentum Space

Nanophotonics, Volume 15, Issue 15, 13 August 2026.
C points can intrinsically coexist around symmetry‐protected BICs without symmetry reduction. Symmetry breaking splits SP‐BICs into new C points that interact with intrinsic ones, forming perfect UGRs at distinct k points with tunable topological charges.
Ying Yu, Siyi Han, Zhiyuan Gu, Dan Wang, Yu Li, Qiao Jiang   +5 more
wiley   +1 more source

Plasmonic Enhancement of Fluorescence and Protein Dynamics in Living Mammalian Cells

Advanced Materials, Volume 38, Issue 45, 13 August 2026.
This study demonstrates plasmonic enhancement of the function of fluorescent voltage sensing proteins (genetically encoded voltage indicators, (GEVIs), QuasAr6) in live mammalian cells. Coupling to plasmonic nanoparticles does not just increase fluorescence, but influences the protein photocycle, creating a hybrid sensor with its response speed to ...
Marco Locarno, Qiangrui Dong, Marco Post, Xin Meng, Cristiano Glessi, Nynke Marije Hettema, Nidas Brandsma, Sebbe Blokhuizen, Alejandro Castañeda Garcia, Srividya Ganapathy, Thieme Schmidt, Lars van Roemburg, Bing Xu, Chun‐Ting Cho, Liedewij Laan, Miao‐Ping Chien, Daan Brinks   +16 more
wiley   +1 more source

High-Efficiency Metamaterial-Engineered Grating Couplers for Silicon Nitride Photonics

Nanomaterials
Silicon nitride (Si3N4) is an ideal candidate for the development of low-loss photonic integrated circuits. However, efficient light coupling between standard optical fibers and Si3N4 chips remains a significant challenge.
William Fraser, Radovan Korček, Ivan Glesk, Jan Litvik, Jens H. Schmid, Pavel Cheben, Winnie N. Ye, Daniel Benedikovic   +7 more
doaj   +1 more source

Selective Dielectric Metasurfaces Based on Directional Conditions of Silicon Nanopillars

Nanomaterials, 2017
Dielectric metasurfaces based on high refractive index materials have been proposed recently. This type of structure has several advantages over their metallic counterparts.
José Francisco Algorri, Braulio García-Cámara, Alexander Cuadrado, José Manuel Sánchez-Pena, Ricardo Vergaz   +4 more
doaj   +1 more source

Carrier Funneling and Luminescent Collimation for Extreme Diffuse Light Concentration

Advanced Photonics Research, Volume 7, Issue 8, August 2026.
Luminescent concentrators show performance millions of times below their thermodynamic limit because of their inefficient design. Carrier funneling combined with luminescent collimation decouples concentration from propagation distance, breaking the practical limitation of current approaches.
D. Methorst, E. C. Garnett
wiley   +1 more source