New Battery-Free Jellyfish Robot Achieves Record Swimming Speed for Biomedical Tasks

• May 15, 2026

Scientists have introduced a groundbreaking soft robot inspired by jellyfish that operates without an onboard power source, achieving superior swimming speeds compared to similar devices. This innovative creation harnesses magnetic fields for external control, allowing it to navigate liquid environments with agility and efficiency.

Advancements in Soft Robotics Mimicking Jellyfish Motion

Dubbed the Jellyfish Magnetic Soft Robot (J-MSR), the device mimics the natural motion of real jellyfish by coordinating contraction and relaxation of its soft shell. This biomimetic approach enables the robot to propel itself smoothly through fluid mediums by replicating the rhythmic pulsations characteristic of jellyfish locomotion.

The absence of an internal battery or other onboard power supply contributes significantly to the robot’s lightweight and flexible design. Instead, the J-MSR relies on external magnetic fields for actuation, which provide precise movement control without adding bulk or compromising maneuverability.

This external control mechanism allows the J-MSR to maintain structural flexibility while achieving a swimming speed that surpasses current counterparts in the field of soft robotics. The combination of soft materials and magnetic manipulation presents a novel methodology for microscale robotic movement, particularly within complex and delicate fluid environments.

The potential applications of such technology are broad and promising, especially in the biomedical sector. The robot’s ability to travel swiftly and with fine control inside liquid environments opens pathways for internal medical interventions. It could potentially be used for targeted drug delivery, minimally invasive procedures, or diagnostics by navigating within the human body.

The research marks a significant step forward in integrating soft robotics with biomedical technology by eliminating the constraints posed by onboard power sources. This approach could inspire further development of compact, flexible robots capable of performing intricate tasks within biological systems while minimizing any physical footprint.

Further research will likely focus on refining the robot’s control precision, exploring biocompatibility, and expanding the range of biomedical functions it can perform. The development underscores the growing intersection between robotics, materials science, and medicine, highlighting how biomimicry coupled with advanced actuation strategies can lead to innovative tools for healthcare.

Researchers develop a battery-free jellyfish robot controlled by magnetic fields, enabling fast swimming and potential internal medical treatments.