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Read all 'electroadhesion' posts in Military Tech
May 22, 2008 6:00 AM PDT

Sticky robot scales walls

by Mark Rutherford
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SRI International has announced the development of a wall-climbing robot that uses a new electrical adhesive technology called "compliant electroadhesion" that can stick to anything from brick to glass--even damp, dirty glass.

(Credit: SRI International)

Electroadhesion, or electrically controlled electrostatic attraction, is an electrically controlled adhesion technology that induces an electrostatic charge using a power supply connected to pads placed on the robot allowing it to scale walls, even those covered with dust or moisture, SRI says.

"Recent events such as natural disasters, military actions, and public safety threats have led to an increased need for robust robots--especially ones that can move in three dimensions," said SRI mechanical engineer Harsha Prahlad. "The ability to climb walls and other structures offers unique capabilities in military applications, such as urban reconnaissance, sensor deployment, and installation of network nodes in an urban environment."

Electroadhesion lends itself to a variety of wall-climbing robots, including tracked "tank"-style robots, as well as the more biomimetic-inspired, legged and inchworm-type robots, according to the company. The robots are simple, low-cost, easy to clean, and readily conform to different surfaces like bumps, corners, or cracks. And they're quiet, unlike other wall-climbers that use suction technology.

(Credit: SRI International)
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About Military Tech

The military establishment's ever increasing reliance on technology and whiz-bang gadgetry impacts us as consumers, investors, taxpayers and ultimately as the "defended." Our mission here is to bring some of these products and concepts to your attention based on carefully selected criteria such as importance to national security, originality, collateral damage to the treasury and adaptability to yard maintenance-but not necessarily in that order.

Mark Rutherford is a member of the CNET Blog Network and is not an employee of CNET.

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