Kevin W. O’Brien

ORCID: 0000-0003-4253-4265
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About
Contact & Profiles
Research Areas
  • Soft Robotics and Applications
  • Advanced Sensor and Energy Harvesting Materials
  • Micro and Nano Robotics
  • Muscle activation and electromyography studies
  • Modular Robots and Swarm Intelligence
  • Electrospun Nanofibers in Biomedical Applications
  • Innovations in Concrete and Construction Materials
  • Aortic Disease and Treatment Approaches
  • Tactile and Sensory Interactions
  • Neuroscience and Neural Engineering
  • Pickering emulsions and particle stabilization

Cornell University
2015-2019

Because of their continuous and natural motion, fluidically powered soft actuators have shown potential in a range robotic applications, including prosthetics orthotics. Despite these advantages, robots using require stretchable sensors that can be embedded bodies for sophisticated functions. Presently, usually rely on the electrical properties materials composites measuring signal; many suffer from hysteresis, fabrication complexity, chemical safety environmental instability, material...

10.1126/scirobotics.aai7529 article EN Science Robotics 2016-12-06

Open-celled, elastomeric foams allow the simple design of fully 3D pneumatic soft machines using common forming techniques. This is demonstrated through fabrication actuators and an entirely soft, functional fluid pump formed in shape human heart. The device pumps at physiologically relevant frequencies pressures attains a flow rate higher than all previously reported pumps. As service to our authors readers, this journal provides supporting information supplied by authors. Such materials...

10.1002/adma.201503464 article EN Advanced Materials 2015-09-19

A 3D-printed passively variable transmission for rapid, strong actuation is shown in a lightweight, tendon-driven prosthetic hand.

10.1126/scirobotics.aau5543 article EN Science Robotics 2018-10-17

We introduce the use of buckled foam for soft pneumatic actuators. A moderate amount residual compressive strain within elastomer increases applied force ∼1.4 × or stroke ∼2 compared with actuators without strain. The origin these improved characteristics is explained analytically. These are in a direct cardiac compression (DCC) device design, type implanted mechanical circulatory support that avoids blood contact, mitigating risks clot formation and stroke. This article describes first step...

10.1089/soro.2017.0018 article EN Soft Robotics 2017-10-26

Soft robots struggle with terrestrial locomotion due to their inherent lack of rigidity, specifically along axes not in line the direction actuation (side loads). We present a method for improved stiffness 3D printed, tendon-driven soft actuator. show, both mathematically and experimentally, that our leads these side loads. Additionally, we demonstrate use complex tendon routing schemes achieve various trajectories single actuator morphology. Finally, two strategies lead speed gait...

10.1109/robosoft.2019.8722801 article EN 2019 2nd IEEE International Conference on Soft Robotics (RoboSoft) 2019-04-01

On page 6334, R. F. Shepherd and co-workers present pneumatically actuated soft machines based on elastomer foams. These foams are easily molded into complex, 3D shapes retain an innate pore network for inflation. This is demonstrated through fabrication of both simple actuators entirely soft, functional fluid pump formed in the shape human heart.

10.1002/adma.201570278 article EN Advanced Materials 2015-11-01
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