A quantitative analysis of hummingbird wings shows that they generate lift more efficiently than the best microhelicopter blades. The findings could lead to more powerful, bird-inspired robotic vehicles.
More than 42 million years of natural selection have turned hummingbirds into some of the world's most energetically efficient flyers, particularly when it comes to hovering in place.
Humans, however, are gaining ground quickly. A new study led by David Lentink, an assistant professor of mechanical engineering at Stanford, reveals that the spinning blades of microhelicopters are about as efficient at hovering as the average hummingbird.
Last modified Wed, 30 Jul, 2014 at 11:37
One of the most popular courses run by the Product Realization Lab, ME 204 teaches students how to build bicycles, but also patience and project management.
In the summer of 2001, Ryan Connolly wanted to build a bicycle from scratch. Connolly, a master's student majoring in manufacturing systems engineering, had met a master frame builder in Palo Alto and convinced him to come to the Product Realization Lab (PRL) and share his knowledge.
That fall quarter, Connolly learned to design and build a frame and fork. In the winter quarter, he built all of the necessary tools, jigs and fixtures required to build not just a single frame, but many.
Last modified Thu, 17 Jul, 2014 at 14:54
The award recognizes contributions to the science and technology of phonon and electron transport and scattering in films and nanostructures.
Last modified Fri, 20 Jun, 2014 at 10:06
Xiaolin Zheng’s work developing peel-and-stick solar panels earns her a spot in 2014 class of young innovators.
Xiaolin Zheng, an assistant professor of Mechanical Engineering, has been named to the 2014 class of National Geographic Emerging Explorers for her work developing “solar stickers,” flexible, decal-like solar panels that can be peeled off like Band-Aids and stuck to virtually any surface.
Last modified Fri, 16 May, 2014 at 16:49
Stanford mechanical engineering students demonstrate their autonomous, battery-powered waterfowl.
If it paddles like a duck, glides like a duck and moves its head, wings or tail feathers like a duck, it must be an entry in Stanford Engineering’s duck-amatronics event.
Last modified Tue, 13 May, 2014 at 9:56
In this interdisciplinary project, graduate student Alexandre Jais turned out quick prototypes on his 3D printer at home.
Stanford engineers love to solve real world problems, and one recent example of this arises from a story about how researchers at Stanford Medical School turned a smartphone into an inexpensive tool for doing eye examinations in the field.
Last modified Tue, 13 May, 2014 at 10:53
When humans go into space, the reduced gravity can weaken the heart's ability to pump hard in response to a crisis. Stanford student researchers are developing a simple device to monitor an astronaut's heart function, and have flown in near-zero gravity to show that it works.
The human heart was not meant to pump in space.
Early astronauts in the Apollo program performed every conceivable physical test to ensure that they were each at the pinnacle of human fitness. And yet, when they returned to Earth after just a few days in space, they felt dizzy when standing and tests showed that each beat of their heart pumped less blood than it had before the mission.
Last modified Tue, 13 May, 2014 at 10:55
Scaling Products in Low-Income Markets
March 6, 2014
4:30 PM - 6:00 PM
Wallenberg Theater, Wallenberg Hall
Open to the public, No RSVP required
Krista Donaldson - CEO at D-Rev
Last modified Fri, 28 Feb, 2014 at 12:10
Shedding a light on pain: A technique developed by Stanford bioengineers could lead to new treatments
Stanford researchers have developed mice whose sensitivity to pain can be dialed up or down by shining light on their paws. The research could help scientists understand and eventually treat chronic pain in humans.
The mice in Scott Delp's lab, unlike their human counterparts, can get pain relief from the glow of a yellow light.
Last modified Wed, 26 Feb, 2014 at 10:00
Total Internal Reflection Fluorescence: TIRF Geometries for Microscopy and Spectroscopy. TIRF Applications for Cell Biology, Molecular Diagnostics, Real-time Microarrays, and Nanoengineering
Last modified Tue, 11 Feb, 2014 at 14:45