Although some progress has been made in the treatment of cancer, challenges remain. In recent years, advancements in nanotechnology and stem cell therapy have provided new approaches for use in regenerative medicine and cancer treatment. Among them, magnetic nanomaterials have attracted widespread attention in the field of regenerative medicine and cancer; this is because they have high levels of safety and low levels of invasibility, promote stem cell differentiation, and affect biological nerve signals. In contrast to pure magnetic stimulation, magnetic nanomaterials can act as amplifiers of an applied electromagnetic field in vivo, and by generating different effects (thermal, electrical, magnetic, mechanical, etc.), the corresponding ion channels are activated, thus enabling the modulation of neuronal activity with higher levels of precision and local modulation. In this review, first, we focused on the relationship between biological nerve signals and stem cell differentiation, and tumor development. In addition, the effects of magnetic nanomaterials on biological neural signals and the tumor environment were discussed. Finally, we introduced the application of magnetic-nanomaterial-mediated electromagnetic stimulation in regenerative medicine and its potential in the field of cancer therapy.

White pigments are rarely employed as standalone elements in printmaking, primarily due to their susceptibility to discoloration and fading during both the printing process and long-term preservation. This study examines the influence of two white pigments—titanium dioxide (TiO₂) and zinc oxide (ZnO)—on color development and adhesion in copperplate prints. Through controlled experiments, we demonstrate that the wavelength of transmitted light significantly affects ink drying rates, thereby altering the chemical environment of cured ink layers. Furthermore, substrate composition (particularly cotton content) and residual byproducts from etching processes were identified as critical factors contributing to pigment degradation. These findings reveal the intricate interplay between material properties and technical variables in printmaking, emphasizing the necessity of precise environmental and compositional control to maintain color accuracy and durability in printed works. This research may also offer valuable insights into the conservation and preservation of copperplate prints.