Single-Step Production and Self-Assembly of Magnetic Nanostructures for Magneto-Responsive Soft Films

• DOI: 10.1021/acsami.5c00992
• Publication Date: 2025-03-28T03:29:36Z
• Authors: Mehran Sedrpooshan; Pierfrancesco Mal...; Davide Peddis; Adam M. Burke; Maria E. Messing; Rasmus Westerström
• Keywords: Magneto

Magneto-responsive soft films constitute a fascinating class of smart materials and devices capable performing various tasks, such as micromanipulation or transport, noninvasive surgery, sensing. These components are fabricated by incorporating magnetic into flexible substrates. In this context, arranging particles elongated chains exhibiting shape anisotropy has shown great potential. Here, we introduce novel technique for fabricating magnetically responsive using continuous single-step production self-assembly nanoparticles from carrier gas at atmospheric pressure anisotropic structures directly onto polymer layers. We show that the resulting exhibit significant residual magnetization large response to external fields. Furthermore, investigate properties nanoparticle assemblies interparticle interactions play critical role in determining final nanostructures. Moreover, provide experimental evidence fusing via post-annealing results transition magnetostatic exchange with an ≈50% increase coercivity.