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#432352 Watch This Lifelike Robot Fish Swim ...
Earth’s oceans are having a rough go of it these days. On top of being the repository for millions of tons of plastic waste, global warming is affecting the oceans and upsetting marine ecosystems in potentially irreversible ways.
Coral bleaching, for example, occurs when warming water temperatures or other stress factors cause coral to cast off the algae that live on them. The coral goes from lush and colorful to white and bare, and sometimes dies off altogether. This has a ripple effect on the surrounding ecosystem.
Warmer water temperatures have also prompted many species of fish to move closer to the north or south poles, disrupting fisheries and altering undersea environments.
To keep these issues in check or, better yet, try to address and improve them, it’s crucial for scientists to monitor what’s going on in the water. A paper released last week by a team from MIT’s Computer Science and Artificial Intelligence Laboratory (CSAIL) unveiled a new tool for studying marine life: a biomimetic soft robotic fish, dubbed SoFi, that can swim with, observe, and interact with real fish.
SoFi isn’t the first robotic fish to hit the water, but it is the most advanced robot of its kind. Here’s what sets it apart.
It swims in three dimensions
Up until now, most robotic fish could only swim forward at a given water depth, advancing at a steady speed. SoFi blows older models out of the water. It’s equipped with side fins called dive planes, which move to adjust its angle and allow it to turn, dive downward, or head closer to the surface. Its density and thus its buoyancy can also be adjusted by compressing or decompressing air in an inner compartment.
“To our knowledge, this is the first robotic fish that can swim untethered in three dimensions for extended periods of time,” said CSAIL PhD candidate Robert Katzschmann, lead author of the study. “We are excited about the possibility of being able to use a system like this to get closer to marine life than humans can get on their own.”
The team took SoFi to the Rainbow Reef in Fiji to test out its swimming skills, and the robo fish didn’t disappoint—it was able to swim at depths of over 50 feet for 40 continuous minutes. What keeps it swimming? A lithium polymer battery just like the one that powers our smartphones.
It’s remote-controlled… by Super Nintendo
SoFi has sensors to help it see what’s around it, but it doesn’t have a mind of its own yet. Rather, it’s controlled by a nearby scuba-diving human, who can send it commands related to speed, diving, and turning. The best part? The commands come from an actual repurposed (and waterproofed) Super Nintendo controller. What’s not to love?
Image Credit: MIT CSAIL
Previous robotic fish built by this team had to be tethered to a boat, so the fact that SoFi can swim independently is a pretty big deal. Communication between the fish and the diver was most successful when the two were less than 10 meters apart.
It looks real, sort of
SoFi’s side fins are a bit stiff, and its camera may not pass for natural—but otherwise, it looks a lot like a real fish. This is mostly thanks to the way its tail moves; a motor pumps water between two chambers in the tail, and as one chamber fills, the tail bends towards that side, then towards the other side as water is pumped into the other chamber. The result is a motion that closely mimics the way fish swim. Not only that, the hydraulic system can change the water flow to get different tail movements that let SoFi swim at varying speeds; its average speed is around half a body length (21.7 centimeters) per second.
Besides looking neat, it’s important SoFi look lifelike so it can blend in with marine life and not scare real fish away, so it can get close to them and observe them.
“A robot like this can help explore the reef more closely than current robots, both because it can get closer more safely for the reef and because it can be better accepted by the marine species.” said Cecilia Laschi, a biorobotics professor at the Sant’Anna School of Advanced Studies in Pisa, Italy.
Just keep swimming
It sounds like this fish is nothing short of a regular Nemo. But its creators aren’t quite finished yet.
They’d like SoFi to be able to swim faster, so they’ll work on improving the robo fish’s pump system and streamlining its body and tail design. They also plan to tweak SoFi’s camera to help it follow real fish.
“We view SoFi as a first step toward developing almost an underwater observatory of sorts,” said CSAIL director Daniela Rus. “It has the potential to be a new type of tool for ocean exploration and to open up new avenues for uncovering the mysteries of marine life.”
The CSAIL team plans to make a whole school of SoFis to help biologists learn more about how marine life is reacting to environmental changes.
Image Credit: MIT CSAIL Continue reading
Posted in Human Robots
#432293 An Innovator’s City Guide to Shanghai
Shanghai is a city full of life. With its population of 24 million, Shanghai embraces vibrant growth, fosters rising diversity, and attracts visionaries, innovators, and adventurers. Fintech, artificial intelligence, and e-commerce are booming. Now is a great time to explore this multicultural, inspirational city as it experiences quick growth and ever greater influence.
Meet Your Guide
Qingsong (Dora) Ke
Singularity University Chapter: Shanghai Chapter
Profession: Associate Director for Asia Pacific, IE Business School and IE University; Mentor, Techstars Startup Weekend; Mentor, Startupbootcamp; China President, Her Century
Your City Guide to Shanghai, China
Top three industries in the city: Automotive, Retail, and Finance
1. Coworking Space: Mixpace
With 10 convenient locations in the Shanghai downtown area, Mixpace offers affordable prices and various office and event spaces to both foreign and local entrepreneurs and startups.
2. Makerspace: XinCheJian
The first hackerspace and a non-profit in China, Xinchejian was founded to support projects in physical computing, open source hardware, and the Internet of Things. It hosts regular events and talks to facilitate development of hackerspaces in China.
3. Local meetups/ networks: FinTech Connector
FinTech Connector is a community connecting local fintech entrepreneurs and start-ups with global professionals, thought leaders, and investors for the purpose of disrupting financial services with cutting-edge technology.
4. Best coffee shop with free WiFi: Seesaw
Clean and modern décor, convenient locations, a quiet environment, and high-quality coffee make Seesaw one of the most popular coffee shops in Shanghai.
5. The startup neighborhood: Knowledge & Innovation Community (KIC)
Located near 10 prestigious universities and over 100 scientific research institutions, KIC attempts to integrate Silicon Valley’s innovative spirit with the artistic culture of the Left Bank in Paris.
6. Well-known investor or venture capitalist: Nanpeng (Neil) Shen
Global executive partner at Sequoia Capital, founding and managing partner at Sequoia China, and founder of Ctrip.com and Home Inn, Neil Shen was named Best Venture Capitalist by Forbes China in 2010–2013 and ranked as the best Chinese investor among Global Best Investors by Forbes in 2012–2016.
7. Best way to get around: Metro
Shanghai’s 17 well-connected metro lines covering every corner of the city at affordable prices are the best way to get around.
8. Local must-have dish and where to get it: Mini Soupy Bun (steamed dumplings, xiaolongbao) at Din Tai Fung in Shanghai.
Named one of the top ten restaurants in the world by the New York Times, Din Tai Fung makes the best xiaolongbao, a delicious soup with stuffed dumplings.
9. City’s best-kept secret: Barber Shop
This underground bar gets its name from the barber shop it’s hidden behind. Visitors must discover how to unlock the door leading to Barber Shop’s sophisticated cocktails and engaging music. (No website for this underground location, but the address is 615 Yongjia Road).
10. Touristy must-do: Enjoy the nightlife and the skyline at the Bund
On the east side of the Bund are the most modern skyscrapers, including Shanghai Tower, Shanghai World Financial Centre, and Jin Mao Tower. The west side of the Bund features 26 buildings of diverse architectural styles, including Gothic, Baroque, Romanesque, and others; this area is known for its exotic buildings.
11. Local volunteering opportunity: Shanghai Volunteer
Shanghai Volunteer is a platform to connect volunteers with possible opportunities in various fields, including education, elderly care, city culture, and environment.
12. Local University with great resources: Shanghai Jiao Tong University
Established in 1896, Shanghai Jiao Tong University is the second-oldest university in China and one of the country’s most prestigious. It boasts notable alumni in government and politics, science, engineering, business, and sports, and it regularly collaborates with government and the private sector.
This article is for informational purposes only. All opinions in this post are the author’s alone and not those of Singularity University. Neither this article nor any of the listed information therein is an official endorsement by Singularity University.
Image Credits: Qinsong (Dora) Ke
Banner Image Credit: ESB Professional / Shutterstock.com Continue reading
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#431980 Brave new world of robotic architecture ...
Sure, there have already been 3-D printed houses. And you can pick up a Nest Thermostat with artificial intelligence at your local hardware store. But a new book co-written and co-edited by Mahesh Daas, dean of the University of Kansas School of Architecture & Design, argues that robotics can and soon will be even further integrated into the design processes at the heart of architecture. Continue reading
Posted in Human Robots
#431862 Want Self-Healing Robots and Tires? ...
We all have scars, and each one tells a story. Tales of tomfoolery, tales of haphazardness, or in my case, tales of stupidity.
Whether the cause of your scar was a push-bike accident, a lack of concentration while cutting onions, or simply the byproduct of an active lifestyle, the experience was likely extremely painful and distressing. Not to mention the long and vexatious recovery period, stretching out for weeks and months after the actual event!
Cast your minds back to that time. How you longed for instant relief from your discomfort! How you longed to have your capabilities restored in an instant!
Well, materials that can heal themselves in an instant may not be far from becoming a reality—and a family of them known as elastomers holds the key.
“Elastomer” is essentially a big, fancy word for rubber. However, elastomers have one unique property—they are capable of returning to their original form after being vigorously stretched and deformed.
This unique property of elastomers has caught the eye of many scientists around the world, particularly those working in the field of robotics. The reason? Elastomer can be encouraged to return to its original shape, in many cases by simply applying heat. The implication of this is the quick and cost-effective repair of “wounds”—cuts, tears, and punctures to the soft, elastomer-based appendages of a robot’s exoskeleton.
Researchers from Vrije University in Brussels, Belgium have been toying with the technique, and with remarkable success. The team built a robotic hand with fingers made of a type of elastomer. They found that cuts and punctures were indeed able to repair themselves simply by applying heat to the affected area.
How long does the healing process take? In this instance, about a day. Now that’s a lot shorter than the weeks and months of recovery time we typically need for a flesh wound, during which we are unable to write, play the guitar, or do the dishes. If you consider the latter to be a bad thing…
However, it’s not the first time scientists have played around with elastomers and examined their self-healing properties. Another team of scientists, headed up by Cheng-Hui Li and Chao Wang, discovered another type of elastomer that exhibited autonomous self-healing properties. Just to help you picture this stuff, the material closely resembles animal muscle— strong, flexible, and elastic. With autogenetic restorative powers to boot.
Advancements in the world of self-healing elastomers, or rubbers, may also affect the lives of everyday motorists. Researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed a self-healing rubber material that could be used to make tires that repair their own punctures.
This time the mechanism of self-healing doesn’t involve heat. Rather, it is related to a physical phenomenon associated with the rubber’s unique structure. Normally, when a large enough stress is applied to a typical rubber, there is catastrophic failure at the focal point of that stress. The self-healing rubber the researchers created, on the other hand, distributes that same stress evenly over a network of “crazes”—which are like cracks connected by strands of fiber.
Here’s the interesting part. Not only does this unique physical characteristic of the rubber prevent catastrophic failure, it facilitates self-repair. According to Harvard researchers, when the stress is released, the material snaps back to its original form and the crazes heal.
This wonder material could be used in any number of rubber-based products.
Professor Jinrong Wu, of Sichuan University, China, and co-author of the study, happened to single out tires: “Imagine that we could use this material as one of the components to make a rubber tire… If you have a cut through the tire, this tire wouldn’t have to be replaced right away. Instead, it would self-heal while driving, enough to give you leeway to avoid dramatic damage,” said Wu.
So where to from here? Well, self-healing elastomers could have a number of different applications. According to the article published by Quartz, cited earlier, the material could be used on artificial limbs. Perhaps it will provide some measure of structural integrity without looking like a tattered mess after years of regular use.
Or perhaps a sort of elastomer-based hybrid skin is on the horizon. A skin in which wounds heal instantly. And recovery time, unlike your regular old human skin of yesteryear, is significantly slashed. Furthermore, this future skin might eliminate those little reminders we call scars.
For those with poor judgment skills, this spells an end to disquieting reminders of our own stupidity.
Image Credit: Vrije Universiteit Brussel / Prof. Dr. ir. Bram Vanderborght Continue reading
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