In the wondrous world of materials science, there exists a substance that blurs the traditional boundaries between solids and liquids—magnetic fluids, also known as ferrofluids. It is not a simple mixture, but rather a colloidal suspension formed by stably dispersing nanoscale magnetic particles (usually iron oxide) in a carrier liquid (such as oil or water) using a special process. This unique structure gives it both the fluidity of a liquid and a strong response to external magnetic fields. Once placed in a magnetic field, the magnetic particles within the liquid rapidly align along the magnetic field lines, macroscopically exhibiting dynamic forms such as spikes, ripples, or clusters, transforming the invisible magnetic field lines into visible three-dimensional patterns. Our interactive exhibit, "Magnetic Fluid," allows you to direct this magnetic theatrical performance through an integrated device measuring 3.5 meters long and 2.3 meters high. Pressing the start button activates
