NTU's Trailblazing Cyborg Cockroaches: From Concept to Utility Pipe Inspection

Nanyang Technological University (NTU) in Singapore continues to push the boundaries of biohybrid robotics with its innovative cyborg cockroaches research. Initially developed for search-and-rescue missions, these hybrid insects are now being adapted for inspecting hard-to-reach utility pipes, addressing critical infrastructure maintenance needs in urban environments like Singapore.

The project highlights NTU's commitment to interdisciplinary engineering, combining mechanical, aerospace, electrical, and civil engineering expertise. By harnessing the natural agility of cockroaches with advanced electronics and artificial intelligence (AI), researchers aim to revolutionize how we monitor ageing underground pipelines, preventing disruptions to essential services such as water supply.

Evolution of Cyborg Insect Technology at NTU Singapore

NTU's cyborg insects program traces its roots to collaborations between the School of Mechanical and Aerospace Engineering and international partners like Japan's Hiroshima University. Professor Hirotaka Sato, a leading figure in the field, has spearheaded developments since the early 2020s. Early prototypes focused on remote-controlled cockroaches for disaster response, where traditional robots falter in rubble-filled terrains.

A pivotal milestone came in March 2025 during the Myanmar earthquake, when 10 cyborg cockroaches were deployed by Singapore's Home Team Science and Technology Agency (HTX). Equipped with infrared cameras and sensors, they navigated collapsed structures to aid the Singapore Civil Defence Force (SCDF) in Operation Lionheart. This real-world validation spurred further innovations, including swarm navigation algorithms that prevent insects from clustering and enable efficient area coverage.

• First single-insect control demonstrated in 2025, evolving to swarm tech by early 2025.
• Deployment in Myanmar marked the inaugural humanitarian use of cyborg insects.
• Subsequent upgrades improved turning radius from 70 to over 80 degrees and reduced voltage needs by 25%.

How Cyborg Cockroaches Are Engineered and Controlled

At the heart of NTU's cyborg cockroaches are Madagascar hissing cockroaches (Gromphadorhina portentosa), selected for their robust size—averaging 6 cm in length—and ability to thrive in confined, dark spaces. Each insect is fitted with a lightweight plastic 'carriage' housing an onboard processor, electronic circuit board, upward-facing color video camera, LED lightbulb, and communication module for real-time location tracking and data transmission.

Steering is achieved non-invasively via surface electrodes on the antennae and cerci (rear sensory organs), delivering mild electrical pulses that mimic obstacle collisions, prompting natural turning behaviors. For pipe inspections, the cockroach tows a small wheeled cart, enhancing load capacity and stability while capturing high-quality footage of pipe undersides. This biohybrid approach leverages the insect's innate endurance—capable of surviving weeks without food—while minimizing ethical concerns through reversible modifications.

The control system operates via Bluetooth, allowing operators to guide paths autonomously with human oversight triggered by AI alerts.

Transition to Utility Pipeline Inspection: A New Frontier

Building on search-and-rescue successes, NTU researchers launched the utility pipe inspection application in early 2025. Singapore's extensive 6,000 km water pipeline network, managed by the Public Utilities Board (PUB), supplies potable water to 1.7 million households and businesses daily. Routine inspections are vital to detect corrosion, leaks, or cracks early, averting costly disruptions.

Cyborg cockroaches excel here, accessing sub-10 cm crevices beneath pipes where wheeled or legged robots struggle due to size constraints or poor traction on uneven, greasy surfaces. The towed cart design optimizes for structured infrastructure environments, prioritizing sensor stability over extreme agility.

Simulated Testing: Replicating Marina Coastal Expressway Conditions

Current trials use a mock-up at NTU replicating pipes along the Marina Coastal Expressway (MCE), Singapore's longest underground expressway. In a February demo, a cyborg cockroach navigated the underside, its camera feeding live footage analyzed for defects. Machine learning models, trained on vast image datasets, identify anomalies like pitting corrosion or hairline fractures with high accuracy.

Step-by-step process:

• Cockroach released into pipe underside via access port.
• Autonomous navigation guided by pulses and onboard sensors.
• AI processes video in real-time, flagging issues for operator review.
• Data logged for predictive maintenance reports.

This controlled setup bridges lab prototypes to field readiness.

AI-Powered Automated Assembly: Enabling Rapid Deployment

A game-changer arrived in July 2025: NTU's world's first AI-driven robotic assembly line. Using computer vision, it identifies optimal electrode sites on the cockroach's back, implanting and attaching backpacks in just 68 seconds—60 times faster than manual methods. A swarm of four can be prepped in under 8 minutes.

Funded by Japan's Moonshot R&D, this system ensures consistency, crucial for scaling to dozens or hundreds in emergencies. Prof Sato notes: "Our innovation makes the dream of deploying large numbers of cyborg insects in real-life scenarios far more practical." Future iterations target industrial validation for infrastructure checks.

Photo by Nikola Tomašić on Unsplash

Swarm Intelligence: Maximizing Coverage and Efficiency

NTU's swarm navigation algorithm, refined in early 2025, coordinates multiple cyborgs to avoid deadlocks in cluttered spaces. Lab tests showed four roaches covering 80% of an obstacle course in 10.5 minutes, far surpassing solo efforts. Leader-follower dynamics and anti-collision protocols mimic ant foraging, optimized via simulations.

For pipes, swarms could parallel-inspect branches, reducing downtime. Improvements include sharper turns and lower power use, extending missions to hours.

Singapore's Infrastructure Challenges and Cyborg Solutions

As a densely urbanized nation, Singapore faces intensifying pressure on underground utilities amid land scarcity. PUB reports occasional leaks costing millions in repairs; proactive inspection is key. Cyborg cockroaches offer cost-effective alternatives to fiber-optic crawlers or manual dives, which are labor-intensive and hazardous.

Adaptable to telecom ducts or power cables, the tech aligns with Smart Nation initiatives. Discussions with agencies signal near-term pilots, potentially expanding to other ASEAN cities with similar grids.

Explore research jobs at NTU and similar institutions driving such innovations.

Overcoming Deployment Hurdles

Real pipes pose darker, wetter conditions with water pooling, testing endurance. Insects must resist fatigue; carts prevent slipping. Ethical protocols ensure humane treatment—backpacks removable post-mission without harm. Regulatory approvals for urban releases and data privacy for AI footage are priorities.

• Environmental resilience: Waterproofing upgrades underway.
• Biological limits: Cockroaches operational for 1-2 weeks.
• Scalability: Assembly line mitigates manpower needs.

Future Outlook: Global Scalability and NTU's Role

Prof Sato envisions swarms inspecting megastructures worldwide. Adaptations for varying pipe materials promise versatility. In Singapore, integration with digital twins could predict failures proactively. NTU's work positions it as a global leader in biohybrid systems, attracting funding and talent.

For aspiring engineers, this underscores opportunities in robotics. Check higher ed faculty positions or Singapore university jobs to contribute to such breakthroughs.

Implications for Higher Education in Singapore

NTU's cyborg cockroaches exemplify Singapore's higher education prowess, with NTU ranking among Asia's top universities (QS 2026: 12th globally). Interdisciplinary labs foster skills in AI, bionics, and civil engineering, vital for Smart Nation goals. Programs like Nanyang Technological University's robotics MSc draw international talent, boosting employability—95% placement rates in tech sectors.

Careers abound: from PhD research assistants to industry liaisons. Platforms like research assistant jobs list openings at NTU, preparing graduates for bio-robotics frontiers.

Expert Insights and Stakeholder Perspectives

Prof Sato emphasizes: "Regular inspection helps detect issues early, so that repair or replacement works can be carried out before more serious damage or disruption occurs." Industry partners like Klass Engineering praise the tech's practicality, while PUB officials eye pilots. Balancing innovation with biosafety, NTU collaborates with HTX for ethical guidelines.

This multi-stakeholder approach ensures robust, deployable solutions.

Photo by Timothy Dykes on Unsplash

Conclusion: Pioneering Tomorrow's Infrastructure Today

NTU's cyborg cockroaches research heralds a biohybrid future, safeguarding Singapore's utilities while advancing global engineering. Aspiring academics and professionals can engage via Rate My Professor, explore higher ed jobs, or seek career advice. Stay informed on university innovations and post a job to attract top talent.