van der Waals (vdW) materials are becoming increasingly popular in scientific and industrial applications because of their unique mixture of record electronic, optical, and mechanical properties. However, nanostructuring of vdW materials is still in its infancy and strongly depends on the specific vdW crystal. As a result, the universal self-assembled technology of vdW materials nanostructuring opens vast technological prospects. This work demonstrates an express and universal synthesis method of vdW nanoparticles with well-defined geometry using femtosecond laser ablation and fragmentation. The disarming simplicity of the technique allows us to create nanoparticles from over 50 vdW precursor materials, covering transition metal chalcogenides, MXenes, and other vdW materials. Obtained nanoparticles manifest perfectly defined crystalline structures and diverse shapes, from nanospheres to nanocubes and nanotetrahedrons. Thus, our approach illustrates a generalizable route to vdW nanostructuring with broad tunability in size, shape, and material composition, adaptable to specific application requirements.

Aix Marseille University CNRS LP3 13288 Marseille France

Department of Inorganic Chemistry University of Chemistry and Technology Prague Technická 5 166 28 Prague 6 Czech Republic

Department of Materials Science and Engineering National University of Singapore Singapore 03 09 EA Singapore

Emerging Technologies Research Center XPANCEO Dubai Investment Park 1st Dubai United Arab Emirates

Institute for Functional Intelligent Materials National University of Singapore Building S9 4 Science Drive 2 Singapore 117544 Singapore

Institute of Quantum Optics Leibniz Universität Hannover 30167 Hannover Germany

Physics Department King's College London London WC2R 2LS U K

The University of Manchester National Graphene Institute Oxford Rd Manchester M13 9PL U K

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