Beam shaping in nanophotonic systems remains a challenge due to the reliance on complex heuristic optimization procedures. In this work, we experimentally demonstrate a novel approach to topological beam shaping using Jackiw-Rebbi states in metasurfaces. By fabricating thin-film dielectric structures with engineered Dirac-mass distributions, we create domain walls that allow precise control over beam profiles. We observe the emergence of Jackiw-Rebbi states and confirm their localized characteristics. Notably, we achieve a flat-top beam profile by carefully tailoring the Dirac-mass distribution, highlighting the potential of this method for customized beam shaping. This experimental realization establishes our approach as a new mechanism for beam control, rooted in topological physics, and offers an efficient strategy for nanophotonic design.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1038/s41377-025-01799-w | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Radiologic and Clinical Anatomy of the Zygomatic Bone in Terms of Zygomatic Implant.
J Craniofac Surg
March 2025
Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Biruni University, Istanbul, Turkey.
The zygomatic bone is crucial in dental implantology, wherein zygomatic implants are increasingly used for patients with insufficient maxillary bone. A comprehensive understanding of the complex anatomy of the zygomatic bone is essential for minimizing surgical complications and optimizing implant success. This study aimed to provide morphometric data through cone-beam computed tomography (CBCT) and microcomputed tomography (μCT) to assist dental radiologists and surgeons in preoperative planning and implant placement.
View Article and Find Full Text PDFVibration Analysis of Shape Memory Alloy Enhanced Multi-Layered Composite Beams with Asymmetric Material Behavior.
Materials (Basel)
March 2025
School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran 14155-6619, Iran.
This study develops a finite element solution to analyze the vibration response of multi-layer shape memory alloy (SMA) composite beams. Using Euler-Bernoulli beam motion equations with tension-compression asymmetry, based on Poorasadion's model, the Newmark method and Newton-Raphson technique are employed. Validating the model against ABAQUS/Standard results for a homogeneous SMA beam shows good agreement.
View Article and Find Full Text PDFStudy on the Robust Bridge Deck Pavement System Based on Horseshoe-Shaped Shear Keys.
Materials (Basel)
February 2025
School of Architecture and Civil Engineering, Xihua University, Chengdu 610039, China.
Traditional concrete bridge decks often incorporate steel mesh to ensure connection and prevent cracking. However, the cracking in the connecting layer, low bond strength, misalignment of steel mesh, and settling at the bottom often appear. In this study, fiber-reinforced concrete was used for the bridge deck overlay, and a horseshoe-shaped shear key was employed to connect it with the beam body, forming a robust composite bridge deck system.
View Article and Find Full Text PDFBiofilm Formation on Three High-Performance Polymeric CAD/CAM Composites: An In Vitro Study.
Polymers (Basel)
March 2025
Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, P.O. Box 60169, Riyadh 11545, Saudi Arabia.
Reinforced polymeric materials are investigated as novel non-metal alternatives for prosthetic frameworks. This study examined the adherence of to three (HPP) composites focusing on their microstructural composition, wettability, and surface roughness. Three CAD/CAM HPP composites [two fiber-reinforced composites, CarboCad (CC) and TRINIA (TR), and one ceramic-reinforced polyether ether ketone, DentoPEEK (PK)], were sectioned into ten beam- and ten plate-shaped specimens from each material.
View Article and Find Full Text PDFTopological beaming of light: proof-of-concept experiment.
Light Sci Appl
March 2025
Department of Physics, Hanyang University, Seoul, 133-791, South Korea.
Beam shaping in nanophotonic systems remains a challenge due to the reliance on complex heuristic optimization procedures. In this work, we experimentally demonstrate a novel approach to topological beam shaping using Jackiw-Rebbi states in metasurfaces. By fabricating thin-film dielectric structures with engineered Dirac-mass distributions, we create domain walls that allow precise control over beam profiles.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!