With the integration of biomimetic design concepts, initial achievements have been made in the innovative design of NdFeB magnets.

Recently, the Material Engineering Team from Zhejiang University, in collaboration with Ningbo Yunsheng Co., Ltd., introduced biomimetic design concepts into the research and development of NdFeB magnets, successfully developing a new type of magnet assembly with a honeycomb-like structure. This innovation has demonstrated exceptional performance in the field of micro-motors, opening up a new path for innovative design in magnetic materials.

Traditional NdFeB magnets often adopt a uniform block structure, which suffers from issues such as uneven magnetic field distribution and low material utilization. Inspired by the hexagonal structure of honeycombs, the research team designed a honeycomb-patterned porous magnet using topological optimization algorithms. Each biomimetic structural magnet unit measures only 0.5mm in side length and forms a three-dimensional magnetic field network through precise assembly. Tests have shown that its magnetic field uniformity has improved by 35%, and its magnetic flux density has increased by 18% within the same volume.

Drawing on the gradient distribution characteristics of biological tissues, the design employs multi-material composite printing technology to embed a holmium-enhanced layer in critical regions of the magnet, achieving a local coercivity of 23 kOe, which is a 25% improvement over traditional structures. Meanwhile, the porous structure reduces the magnet's weight by 40% and enhances its heat dissipation efficiency by 50%, making it perfectly suited for applications such as drone motors that demand lightweight and high thermal stability.

Currently, the first batch of honeycomb-structured magnets has been applied to the drive system of medical minimally invasive surgical robots. Installation tests indicate that their service life has been extended to 1.8 times that of traditional magnets. The project leader stated that the team is further studying the microscopic magnetic response mechanism of butterfly wing scales, aiming to develop biomimetic magnets with dynamic magnetic field regulation capabilities. Eight invention patents have been applied for related to this technology, and mass production trials are expected to commence next year in the field of steering motors for new energy vehicles.

Industry experts have pointed out that biomimetic design breaks through traditional thinking in magnet structure design. In the future, combined with 3D printing technology, it is expected to achieve "biomagnetic functional integration," driving the application upgrade of NdFeB magnets in precision instruments, aerospace, and other fields.