#Singapore #National University of Singapore #OstraBot #Biohybrid Robotics

Introduction

In a remarkable advancement, the National University of Singapore (NUS) has unveiled OstraBot, a swimming robot powered by lab-grown muscle tissues. Recent research indicates that this innovative machine has surpassed its predecessors, achieving a record speed of 467 millimeters per minute.

The Breakthrough in Muscle Training

NUS researchers have developed a transformative platform that allows lab-grown muscle tissues to autonomously strengthen themselves without the need for external stimuli. By mechanically coupling two muscle tissues, they are made to continuously pull against each other, turning their natural contractions into a consistent workout. This self-training method has proven crucial in enhancing the muscles’ capacity, unlocking surprising performance.

Assistant Professor Tan Yu Jun, who led the research, stated, "For years, researchers aspired to construct robots powered by living muscle because of their adaptability and efficiency at small scales." However, previous developments were hindered by the weak output of cultured skeletal muscles. This new method breaks through that limitation, allowing robots to achieve impressive speeds and perform complex tasks.

OstraBot’s Unique Design

Inspired by the boxfish, OstraBot has been designed with a rigid body and flexible tails, utilizing the artificially created muscles in an innovative manner. After creating a physiology-based model tracing muscle activation through electrical signals, the team optimized the robot to achieve remarkable performance. With a single trained muscle, OstraBot can drive two flexible tails, making it not only swift but also exceptionally controllable.

In fact, OstraBot's speed can be precisely adjusted using electrical fields, and its response to clapping sound signals signifies a new level of control. "This shows that the robot is not just alive but also controllable. Unlike previous muscle-powered robots that lacked responsiveness, our design allows real-time adjustment akin to how nerves control muscles in living creatures," Professor Tan explains.

Addressing Environmental Concerns

As the research progresses, NUS is focused on using biodegradable materials to construct reliable robots. The goal is to create machines that can operate in sensitive ecosystems, such as wetlands and coral reefs, without leaving a trace. Additionally, the prospect of temporary implantable devices that dissolve after fulfilling their clinical functions presents a revolutionary approach to healthcare tools.

"While achieving strength was our first milestone, long-term stability and lifecycle design are equally significant," emphasizes Assistant Professor Tan. Developing machines that merge performance with environmental responsibility is crucial for future advancements.

Future Directions

Moving forward, the researchers plan to refine control strategies, enhance durability, and achieve greater efficiency in muscle-powered robotic systems. The integration of biodegradable materials will support the sustainable operation of robots designed to address real-world challenges, marking a significant evolution in biohybrid robotics.

In conclusion, NUS's revolutionary work in developing OstraBot not only sets a new record for swimming robots but also paves the way for implementing biohybrid systems in various applications. Enhanced control, speed, and ecological responsibility signal a bright future for this emerging field of robotics.

For more insights, you can read the full report on the NUS News website.