via Cornell University
Swimmers Heal on the Move Following Catastrophic Damage
Living tissue can heal itself from many injuries, but giving similar abilities to artificial systems, such as robots, has been extremely challenging. Now, researchers reporting in ACS’ Nano Letters have developed small, swimming robots that can magnetically heal themselves on-the-fly after breaking into two or three pieces. The strategy could someday be used to make hardier devices for environmental or industrial clean up, the researchers say.
Scientists have developed small robots that can “swim” through fluids and carry out useful functions, such as cleaning up the environment, delivering drugs and performing surgery. Although most experiments have been done in the lab, eventually these tiny machines would be released into harsh environments, where they could become damaged. Swimming robots are often made of brittle polymers or soft hydrogels, which can easily crack or tear. Joseph Wang and colleagues wanted to design swimmers that could heal themselves while in motion, without help from humans or other external triggers.
The researchers made swimmers that were 2 cm long (about the width of a human finger) in the shape of a fish that contained a conductive bottom layer; a rigid, hydrophobic middle layer; and an upper strip of aligned, strongly magnetic microparticles. The team added platinum to the tail, which reacted with hydrogen peroxide fuel to form oxygen bubbles that propelled the robot. When the researchers placed a swimmer in a petri dish filled with a weak hydrogen peroxide solution, it moved around the edge of the dish. Then, they cut the swimmer with a blade, and the tail kept traveling around until it approached the rest of the body, reforming the fish shape through a strong magnetic interaction. The robots could also heal themselves when cut into three pieces, or when the magnetic strip was placed in different configurations. The versatile, fast and simple self-healing strategy could be an important step toward on-the-fly repair for small-scale swimmers and robots, the researchers say.
Original Article: Small robot swimmers that heal themselves from damage
The Latest Updates from Bing News & Google News
Go deeper with Bing News on:
- A survival guide in 42 brilliant bookson August 21, 2021 at 1:38 am
Using ten simple rules for understanding numbers – plus one golden rule – this insightful book shows how if we keep our wits about us, thinking carefully about the way numbers are sourced and ...
- The real Fantastic Voyage! Micro robot powered by magnets could be piloted through the body to deliver drugs directly to the central nervous systemon August 19, 2021 at 2:38 pm
Tiny robots that can climb slopes, move against the flow of fluids and travel over obstacles could one day deliver drugs to specific areas in the human body. A team of scientists, led by Weinberg ...
- 23rd SpaceX commercial resupply mission launches bone, plant, and materials studies to ISSon August 19, 2021 at 12:54 am
Experiments aboard include an investigation into protecting bone health with botanical byproducts, testing a way to monitor crew eye health, demonstrating improved dexterity of robots, exposing ...
- Scientists invent self-healing robots, ushering forth the end of mankindon August 16, 2021 at 5:00 pm
Researchers from the Free University of Brussels just revealed a novel implementation of a self-healing polymer which could give robots the ability to actually fix themselves back up if they are ...
- Would you let a robot lawyer defend you?on August 15, 2021 at 4:05 pm
Could your next lawyer be a robot? It sounds far fetched, but artificial intelligence (AI) software systems - computer programs that can update and "think" by themselves - are increasingly being used ...
Go deeper with Google Headlines on:
Go deeper with Bing News on:
- The best pool vacuum robots for 2021on August 20, 2021 at 8:09 am
Cleaning your pool can be a wicked chore in the summer heat, so why not invest in a submergible robot vac to do the hard work? Here are five we recommend.
- 2021-2027 Global and Regional Swimming Pool Clean Robots Industry Status and Prospects Professional Market Research Report Standard Versionon August 19, 2021 at 3:44 pm
Pages Report] Check for Discount on 2021-2027 Global and Regional Swimming Pool Clean Robots Industry Status and Prospects Professional Market Research Report Standard Version report by HNY Research.
- Seven life lessons from my pool robot cleaneron August 19, 2021 at 12:22 pm
As a child, I remember swimming in the sky blue, sparkling clean water of the Ben Weider community center in Montreal, Canada, where I was raised. I took for granted ...
- A robotic fish tail could inform underwater vehicle designon August 18, 2021 at 1:18 am
Researchers built a fishlike robot that uses a programmable artificial tendon to tune its own tail stiffness while swimming in a water channel. ...
- Tunable Stiffness Enables Fast and Efficient Swimming in Fish-like Robotson August 16, 2021 at 4:47 pm
Fish maintain high swimming efficiencies over a wide range of speeds. A key to this achievement is their flexibility, yet even flexible robotic fish trail real fish in terms of performance. Here, we ...