Magnetic ink to make 3D printed, self-healing electronics a reality

A new magnetic ink has been developed that will be capable of being used to create self-healing batteries, electrochemical sensors and wearable, textile-based electrical circuits. The ink has already shown to repair more damage and at a quicker speed than current self-healing systems.

Developed by a team of engineers at the University of California San Diego, the ink’s key ingredient is microparticles that are oriented in a certain configuration by a magnetic field.

Because of the orientation of these particles, any tear in a device printed with the ink will self-heal as particles on both sides of the tear are magnetically attracted to one another.

The ink has already set records by repairing tears as wide as 3mm, a new high in the field of self-healing systems.

“Our work holds considerable promise for widespread practical applications for long-lasting printed electronic devices,” said Joseph Wang, director of the Center for Wearable Sensors and chair of the nanoengineering department at UC San Diego.

A demonstration of the magnetic ink, which was printed as a self-healing circuit onto a t-shirt, before being cut and repairing itself. Image courtesy of Jacobs School of Engineering/UC San Diego

A demonstration of the magnetic ink, which was printed as a self-healing circuit onto a t-shirt, before being cut and repairing itself

In addition to the extent of damage the ink allows devices to repair, it is also notable for its ability to do so without any outside catalyst.

Existing systems require external triggers to begin the healing process, and can take anywhere between a few minutes to several days to do so. By contrast, the new system requires no external trigger and repairs damage within roughly 50 milliseconds.

The engineers tested their system by printing batteries, electrochemical sensors and wearable, textile-based electrical circuits that they then set about damaging by cutting them and pulling them apart to create increasingly wide gaps. The devices were damaged nine times at the same location, as well as having damage inflicted in four different places on the same device.

Despite the extensive and repeated damage, the devices continued to heal themselves and recover function, losing only a minimal amount of conductivity.

For example, a self-healing circuit was printed on the sleeve of a T-shirt and connected to an LED light and a coin battery. The circuit and the fabric it was printed on were then cut, resulting in the LED turning off. Within a few seconds, however, it started turning back on as the two sides of the circuit came together and healed.

A second demonstation of the ink's healing capabilities. Image courtesy of Jacobs School of Engineering/UC San Diego

A second demonstration of the ink’s healing capabilities. Image courtesy of Jacobs School of Engineering/UC San Diego

“We wanted to develop a smart system with impressive self-healing abilities with easy-to-find, inexpensive materials,” said Amay Bandodkar, one of the papers’ first authors, who earned his Ph.D. in Wang’s lab and is now a postdoctoral researcher at Northwestern University.

The engineers envision that, in the future, they will be able to expand the range of applications for the ink by making use of different variations with different ingredients.

Additionally, they plan to test different self-healing ink recipes in silicon through computer simulations, before taking them for lab testing.

The sky could soon be filled with electric sky taxis

An electric jet has been successfully tested in Germany, but Lilium, the company behind it, says it has plans to launch a five-seater driverless sky taxi service. "The sky has a lot more capacity than the ground, and we don't have to build additional infrastructure,," said Lilium's co-founder, Daniel Wiegand

Source: BBC

IBM's Watson lends its brain to hospitals and offices

IBM's Watson Internet of Things (IoT) unit has teamed with audio giant Harman's Professional Solutions group to create an AI – dubbed Called Voice-Enabled Cognitive Rooms – that is able to respond to voice commands and questions based specifically on the context of the room its sensor is located in.

Source: Ars Technica

Scientists think pacemakers for the brain can help memory

Scientists have reported that well-timed pulses from electrodes implanted in the brain can enhance memory in some people. The claims amount to the most rigorous demonstration to date of how a pacemaker-like approach might help reduce symptoms of dementia, head injuries and other conditions.

Source: BBC

Mastercard unveils credit card with a fingerprint sensor

A payment card featuring a fingerprint sensor has been unveiled by Mastercard, the credit card provider. Mastercard's chief of safety and security, Ajay Bhalla, said that the fingerprint technology would help "to deliver additional convenience and security. It is not something that can be taken or replicated."

Source: BBC

Alphabet enlists 10,000 volunteers to find out why people get sick

Verily, which used to be Google Life Sciences, and is part of Alphabet, is launching a four-year study called Project Baseline to find out why people get sick. 10,000 participants from diverse backgrounds will take part in the study at half a dozen study sites in California and North Carolina.

Source: Wired

India's space agency plans to mine energy from Moon by 2030

The Indian Space Research Organisation , plans to mine Helium-3 rich lunar dust, generate energy and transport it back to Earth. This lunar dust mining plan comes after India revealed plans to cut the nation's dependence on imported hydrocarbons by 10 percentage points by 2022.

Source: Live Mint

Want to learn how to be an office don? Start playing World of Warcraft

A new study has found that gamers who work well in a team during “raids” while playing World of Warcraft (WoW) develop qualities that allow them to excel in the workplace.

Basically, all that time your parents said was wasted playing video games, you were actually training to become a better worker than the guy who spent his internship fetching coffee.

The study, conducted by researchers at the Missouri University of Science and Technology, surveyed WoW players from across a multitude of servers.

Those surveyed were diverse in age, race, sex, class, occupation and location, and on average played WoW eight hours a week  and worked 38 hours a week, a factor which was of particular interest as the researchers wanted players with full-time jobs requiring teamwork.

“What we wanted to look at was virtual teamwork and what kind of characteristics a person had in-game that would translate to real life and the workplace,” said Elizabeth Short, a graduate student in industrial-organizational psychology who compiled data for the study.

The skills provided by managing to properly work together to bring down the Lich King are obvious in some aspects – computer-mediated communication skills and technology readiness were highlighted by researchers for example – but a more notable discovery was how WoW raiding develops, what the study refers to as, the Big Five personality traits: extraversion, agreeableness, openness,  conscientiousness and neuroticism.

The survey’s respondents were each asked 140 questions about motivation, communication skills, preferences for teamwork and personality, with most questions relating to the Big Five personality traits.

By comparing the players’ survey answers to their characters’ statistics, players gained group achievement points based on how much group gameplay they participated in and how successfully the researchers were able to find small but “statistically significant” correlations.

Fairly predictably, the correlation that stood out as one of the strongest was that of “technological readiness”.

It’s fairly obvious using tech to play WoW would stand you in good stead in a modern workplace, and it’s probably no surprise that desperately trying to keep your DPS alive while people determinedly attempt to lone wolf an entire raid is going to give you a certain resilience when it comes to dealing with technology.

“The more technologically ready you are, the more resilient around technology you are, the more adaptable you are, the more achievement points you have (in WoW),” said Short.

“The more achievements you have in game, the more technology savvy you are in real life. And that’s a good thing, especially in virtual communication teams and workplaces.”

The research stemmed in part from Short’s own past experience as a member of the WoW community and she has stated that she hopes to take the positive growth she took from the game and use those transferable skills to help others in the workplace.