Continuously adjustable hollow beam for ultrafast laser fabrication of size-controllable nanoparticles.

Zhi Wang, Peng Yi, Andong Wang, Taoyong Li, Wentao Chen, Xiaolin Qi, Xiaowei Li

Abstract read

In one paragraph

Article in Nanophotonics (Berlin, Germany), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

7 authors.

Zhi WangSchool of Mechanical Engineering, Beijing Institute of Technology, No. 5 Zhonggguancun South Street, Haidian Beijing, Beijing 100081, China.

Peng YiSchool of Mechanical Engineering, Beijing Institute of Technology, No. 5 Zhonggguancun South Street, Haidian Beijing, Beijing 100081, China.

Andong WangLaser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China.ORCID https://orcid.org/0000-0002-7760-0755

Taoyong LiSchool of Mechanical Engineering, Beijing Institute of Technology, No. 5 Zhonggguancun South Street, Haidian Beijing, Beijing 100081, China.

Wentao ChenSchool of Mechanical Engineering, Beijing Institute of Technology, No. 5 Zhonggguancun South Street, Haidian Beijing, Beijing 100081, China.

Xiaolin QiSchool of Mechanical Engineering, Beijing Institute of Technology, No. 5 Zhonggguancun South Street, Haidian Beijing, Beijing 100081, China.

Xiaowei LiSchool of Mechanical Engineering, Beijing Institute of Technology, No. 5 Zhonggguancun South Street, Haidian Beijing, Beijing 100081, China.ORCID https://orcid.org/0000-0003-1707-4957

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The focused vortex beam generates a hollow beam, which has been widely used for size-controlled nanoparticle formation on various materials. However, the size variation of the vortex beam is limited by the integral order of the 2π phase wrap, while the waste is caused by the large side lobe around the center. In this study, we propose a method for hollow beam generation by splitting a femtosecond laser and imparting opposite phases to the outer annular region and the central Gaussian region. After focusing, these two regions overlap at the focal spot, resulting in a hollow beam due to phase cancellation. By modulating the relative dimensions of these two regions, the hollow center can be continuously varied. When such a hollow beam is used for surface processing, the thermal capillary effect facilitates the convergence of the molten material toward the center, ultimately leading to the formation of nanoparticles. This ability to control size allows precise control of nanoparticle size with a diameter range from 140 nm to 940 nm. This method holds great promise for guiding research into nanoparticle properties that are influenced by size effects.

Indexed as

controllably sized nanoparticlesfemtosecond laserhollow beamspatial shaping

Identifiers

PMID40309432

DOI10.1515/nanoph-2024-0690

PMCPMC12038574

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.