Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Risk

3/23/2012
05:25 PM
Connect Directly
Google+
LinkedIn
Twitter
RSS
E-Mail
50%
50%

Robot Jellyfish May Be Underwater Spy Of Future

Jellyfish-like robot, developed with Navy funds, refuels itself with hydrogen and oxygen extracted from the sea. The goal: Perpetual ocean surveillance.

NASA's Blue Marble: 50 Years Of Earth Imagery
NASA's Blue Marble: 50 Years Of Earth Imagery
(click image for larger view and for slideshow)
Scientists at the University of Texas at Dallas and Virginia Tech have built a jellyfish-inspired robot that can refuel itself, offering the possibility of perpetual ocean surveillance.

Like Slugbot, a robot designed to be able to hunt garden slugs and devour them for fuel, Robojelly, as the machine is called, is self-sustaining. It extracts hydrogen and oxygen gases from the sea to keep itself running.

"We've created an underwater robot that doesn't need batteries or electricity," Yonas Tadesse, assistant professor of mechanical engineering at UT Dallas, told the UT Dallas news service. "The only waste released as it travels is more water."

The robot offers one way around a problem that continues to vex researchers developing autonomous machines: operational limitations imposed by the need for frequent refueling. Scientists at Sandia National Laboratories and Northrop Grumman last year concluded that nuclear power would extend the capabilities of aerial drones but couldn't be implemented due to political considerations. The U.S. government presumably would rather avoid the political outrage that would follow from a downed nuclear drone.

A self-sustaining surveillance bot that doesn't involve hazardous materials and doesn't pollute would be much more politically palatable, not to mention operationally useful.

[ Read Angry Birds Space Mirrors Real Rocket Science. ]

Robojelly looks as if it could be related to a novelty umbrella hat, except that it has two hemispherical canopies, stacked one on top of another (the video embedded below depicts an earlier single-canopy version). These bell-like structures are made of silicone and are connected to artificial muscles that contract when heated. The contractions, like those in a real jellyfish, propel the device.

The muscles are made of a nickel-titanium alloy encased in carbon nanotubes, coated in platinum, and housed in a casing. The chemical reaction arising from contact between the mixture of hydrogen and oxygen and the platinum generates heat, which causes the artificial muscles to contract and move the silicone canopies while expelling water.

Tadesse says the next step in the project is to revise the device's legs so it can move in different directions. Right now, Robojelly's fixed supports allow it to move in only one direction.

Robojelly was funded by the Office of Naval Research, which has an obvious interest in monitoring the seas. In addition to scanning the waves, Tadesse suggests the device could be used to check the water for pollutants.


Nominate your company for the 2012 InformationWeek 500--our 24th annual ranking of the nation's very best business technology innovators. Deadline is April 27. Organizations with $250 million or more in revenue may apply for the 2012 InformationWeek 500 now.

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
COVID-19: Latest Security News & Commentary
Dark Reading Staff 5/22/2020
How an Industry Consortium Can Reinvent Security Solution Testing
Henry Harrison, Co-founder & Chief Technology Officer, Garrison,  5/21/2020
10 iOS Security Tips to Lock Down Your iPhone
Kelly Sheridan, Staff Editor, Dark Reading,  5/22/2020
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Write a Caption, Win a Starbucks Card! Click Here
Latest Comment: This comment is waiting for review by our moderators.
Current Issue
How Cybersecurity Incident Response Programs Work (and Why Some Don't)
This Tech Digest takes a look at the vital role cybersecurity incident response (IR) plays in managing cyber-risk within organizations. Download the Tech Digest today to find out how well-planned IR programs can detect intrusions, contain breaches, and help an organization restore normal operations.
Flash Poll
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2020-5537
PUBLISHED: 2020-05-25
Cybozu Desktop for Windows 2.0.23 to 2.2.40 allows remote code execution via unspecified vectors.
CVE-2020-13438
PUBLISHED: 2020-05-24
ffjpeg through 2020-02-24 has an invalid read in jfif_encode in jfif.c.
CVE-2020-13439
PUBLISHED: 2020-05-24
ffjpeg through 2020-02-24 has a heap-based buffer over-read in jfif_decode in jfif.c.
CVE-2020-13440
PUBLISHED: 2020-05-24
ffjpeg through 2020-02-24 has an invalid write in bmp_load in bmp.c.
CVE-2020-13433
PUBLISHED: 2020-05-24
Jason2605 AdminPanel 4.0 allows SQL Injection via the editPlayer.php hidden parameter.