Grasping without Squeezing

Grasping without Squeezing

Grasping without Squeezing
Search video...
Robotic Grasping of Large Objects

Robotic Grasping of Large Objects

00:31
Play Video
Demo of Film Grasping Ball

Demo of Film Grasping Ball

00:12
Play Video
Demo of Bi-stable Grasping Device

Demo of Bi-stable Grasping Device

00:29
Play Video
Passive Catching of Tossed Ball

Passive Catching of Tossed Ball

00:17
Play Video
 

Leveraging the unique mechanics of controllable gecko-inspired adhesives, we are able to grasp objects without applying a normal force. Instead, we rely only on the contact area between the gripper and the object.

 

Human Climbing with Gecko Adhesives

Human Climbing with Gecko Adhesives

Human Climbing with Gecko Adhesives
Search video...
NYTimes ScienceTake | Harnessing Gecko Power by David Frank

NYTimes ScienceTake | Harnessing Gecko Power by David Frank

01:34
Play Video
Sensor Images of Tokay Gecko Feet

Sensor Images of Tokay Gecko Feet

00:11
Play Video
Stanford Scientists Save Spider-Man

Stanford Scientists Save Spider-Man

03:03
Play Video
Climbing with Gecko Adhesives

Climbing with Gecko Adhesives

01:05
Play Video

While numerous variations of synthetic gecko-inspired adhesives have been shown to provide strong, reusable adhesion, we focused on scaling this adhesion to the sizes needed to support a human. With special attention to load sharing, we were able to climb a glass wall with a hand-sized area of synthetic adhesive.

Hawkes E.W., Eason E.V., Christensen .DL., Cutkosky M.R. 2015 "Human climbing with efficiently scaled gecko-inspired dry adhesives." Journal of the Royal Society Interface 12: 20140675. Online Preprint

Inverse Pneumatic Artificial Muscle (IPAM)

Inverse Pneumatic Artificial Muscle (IPAM)

Inverse Pneumatic Artificial Muscle (IPAM)
Search video...
IPAM Lifting 2kg

IPAM Lifting 2kg

00:03
Play Video
IPAM Lifting and Launching ICRA Duck

IPAM Lifting and Launching ICRA Duck

00:10
Play Video
Animation Explaining Concept

Animation Explaining Concept

00:24
Play Video
500% Strain Demo

500% Strain Demo

00:06
Play Video
 

Instead of inflating our artificial muscle to cause contraction as traditional pneumatic artificial muscles (PAMs) do, we inflate to lengthen, or relax, the muscle. In doing so, we store elastic energy that can powerfully released on command. This scheme of actuation also allows for unprecedented strain rates from our actuators.

MicroClimber

MicroClimber

MicroClimber
Search video...
MicroClimber Hoisting Old Stickybot

MicroClimber Hoisting Old Stickybot

00:16
Play Video
MicroClimber Demo

MicroClimber Demo

00:23
Play Video
Animation of Climbing

Animation of Climbing

00:58
Play Video
20 mg MicroClimber Hoisting 500 g

20 mg MicroClimber Hoisting 500 g

00:16
Play Video
 

We developed two small-scale robotic climbers that can hoist many times their weight. One is 9 g and is powered by a single servo motor, using an inchworm gait to move up the wall while carrying over 1 kg (>100x bodyweight). The second is a tiny 20 mg climbing, powered by SMA that can hoist 500 mg.