Showing posts with the label #mechanical engineering

New Underwater Propulsion like Fish

Tunabot - Fast as Tuna, Next G Underwater Vehicle Propulsion Source:  University of Virginia Prototype for Next G Underwater Vehicle Propulsion The tuna is one of the fastest fish in the sea.  A mechanical engineering team from University of Virginia in collaboration with biologists from Harvard University have invented a robofish that can swim as fast as a yellowfin tuna.  The team says it's not about the robot.  It's about inventing a new, faster and more efficient underwater propulsion system for manned and unmanned underwater vehicles. Physics of Fish Propulsion At Harvard and UVA, Tunabot is tethered in a large flow tank with a green laser to measure fluid motion as it swims.  Yellowfin tuna grow to 7 feet.  The Tunabot is 10 inches long.  The purpose of this research is to better understand the physics of fish propulsion to develop the next generation of underwater vehicles with fish like propulsion system.  The team says the ultimate goal "is to surpass

Electronic Skin that Heals, Re-Cycles Itself

University of Colorado at Boulder Breakthru Technology E-Skin This e-skin is self-healing, malleable and fully re-cyclable.  It can be used for robotics, prosthetics and for better medical devices. E-skin is a thin, translucent material that mimics the function and mechanical properties of real human skin. University of Colorado's e-skin also has sensors embedded in the skin for critical measurements. Awesome Tech Loaded with Sensors The e-skin has sensors embedded to measure pressure, temperature, humidity and air flow.  The tech has several unique properties including a polymer called polyimine.  It's also laced with silver nanoparticles to provide strong mechanical strength, chemical stability and electrical connectivity. The e-skin can be easily fitted to curved surfaces like a human arm or hand and even a robot's finger for a sense of touch. Polyimine Does It According to University of Colorado scientist Jianliang Xiao, what's unique is the chemical bond