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Helical structure assembled by hydrogel microfibers is significant for culture of smooth muscle cells. However, the helical structure is only fabricated at the macroscale, while the fabrication of helical microstructure is still a challenge due to the lack of assembly method. In this paper, we propose a robotics-based assembly method to handle such challenge. An electromagnetic needle (EMN) is employed...
Alginate hydrogel microfibers are a promising cell-laden module for three-dimensional (3-D) assembly to build cellular structures. However, it is still a challenge to manipulate them for microassembly. In this letter, we report a novel magnetic control method to handle this challenge. To enhance the controllability, we mix magnetic nanoparticles (MNPs) into alginate solution, and then spin magnetic...
Magnetic field has been used for manipulation of micro-robots; in this research we use it for scaffold fabrication. Magnetic sugar particle (MSP) was used as porogen to control pore size, pore structure and pore density in the scaffold. We studied the influence of the strength of magnetic fields for controlling the coating thickness of unmagnetized MSPs during the fabrication of sheet-like scaffolds...
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