Tiny Vibration-Powered Robots Are the Size of the World’s Smallest Ant
By John Toon – Researchers have created a new type of tiny 3D-printed robot that moves by harnessing vibration from piezoelectric actuators, ultrasound sources or even tiny speakers. Swarms of these “micro-bristle-bots” might work together to sense environmental changes, move materials – or perhaps one day repair injuries inside the human body.
The prototype robots respond to different vibration frequencies depending on their configurations, allowing researchers to control individual bots by adjusting the vibration. Approximately two millimeters long – about the size of the world’s smallest ant – the bots can cover four times their own length in a second despite the physical limitations of their small size.
“We are working to make the technology robust, and we have a lot of potential applications in mind,” said Azadeh Ansari, an assistant professor in the School of Electrical and Computer Engineering at the Georgia Institute of Technology. “We are working at the intersection of mechanics, electronics, biology and physics. It’s a very rich area and there’s a lot of room for multidisciplinary concepts.”
A paper describing the micro-bristle-bots has been accepted for publication in the Journal of Micromechanics and Microengineering. The research was supported by a seed grant from Georgia Tech’s Institute for Electronics and Nanotechnology. In addition to Ansari, the research team includes George W. Woodruff School of Mechanical Engineering Associate Professor Jun Ueda and graduate students DeaGyu Kim and Zhijian (Chris) Hao. more>
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Tagged Business improvement, Climate change, Georgia Tech, Health, Internet, Skills, Technology
I Can Get Paid for Bike Helmet Art?!
By Jordan Kushins – There’s so much freedom to be found on a bike: hop on, start pedaling, and go go go. But before setting out, adults have an important decision to make: to helmet or not to helmet. Danny Sun understands that despite the fact that strapping one on can literally save your life, helmets can be a tough sell for adults. “I know I work on a product that no one really wants to wear,” he says.
Sun is an art director at Bell, a longtime leader in the motorcycle and bicycle helmet field. He and senior designer Anne Mark have been adorning bike helmets—specifically, “mid-price-point helmets for average everyday riders,” she says—with colors, graphics, finishes, and more for more than a decade. They regularly collaborate with companies such as Disney, Lucasfilm, and Marvel, and produce custom lines for major big-box clients. The full-time job of a helmet designer requires far more than digital creative skills; here’s what it takes to make it in the challenging, curvilinear world of helmet art.
Personal reasons for going without headgear varies, but often, it’s an image thing. “There’s a whole generation who feel like helmets are really dorky,” says Sun.
In the quest to get as many riders as possible opting in, helmet designers have got to offer options that cater to that wide range of potential customers. It’s about finding a balance, but also pushing the boundaries a bit on what might spark a potential purchase—but also joy. more>
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Tagged Adobe, Business improvement, Design, Health, helmet, Skills, Technology
Public disclosures help hold politicians accountable
By Rebecca Stropoli – A common problem in democracies is that, once elected, politicians may fail to address the needs of their constituents, especially the poorer ones. But is there a way to empower the electorate by holding officials accountable for their actions?
MIT’s Abhijit Banerjee and Harvard’s Nils Enevoldsen, Rohini Pande, and Michael Walton examined the effect that publicizing politicians’ records had on electoral results in the 2012 municipal elections in Delhi, India. They find that being issued public report cards caused politicians to shift their spending priorities.
With more than 18 million people, Delhi is the world’s second-largest city, behind Tokyo. Poor people living in slums form a significant share of the Delhi population. Slum dwellers, in fact, account for an electoral majority in many of the city’s 272 single-member wards, each of which elects a councilor to the municipal government every five years.
The anticipation of media reports did influence the policies of politicians representing poorer areas, the findings suggest. Councilors in high-slum wards whose report cards were published shifted their spending priorities to better match the needs of their constituents.
The “effective spending” on the needs of the poor by these councilors over two years increased by about $5,000 on average, or more than 13 percent, Enevoldsen says. more>
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