MAROKO133 Eksklusif ai: Engineered polyionic liquid delivers seven times stronger carbon c

📌 MAROKO133 Update ai: Engineered polyionic liquid delivers seven times stronger c

Researchers in Japan have developed a new carbon capture material that absorbs significantly more carbon dioxide simply by changing the size of its counter anions.

The joint research team from Nitto Boseki Co., Ltd. and Tohoku University found that carefully engineered polyionic liquids, or PILs, can dramatically improve CO2 adsorption performance after purification and anion exchange.

The researchers reported that the material achieved up to seven times higher CO2 adsorption capacity compared to the original raw material. The findings could help improve future carbon capture systems and gas separation membranes.

The work focuses on diallyldimethylammonium-based PILs, materials known for combining the CO2 affinity of ionic liquids with the stability and processability of polymers.

Bigger anions trap CO2

Capturing carbon dioxide from industrial emissions remains one of the major technological challenges in reducing greenhouse gas emissions. PILs have emerged as promising candidates because they can selectively interact with CO2 while remaining stable in solid form.

However, researchers said conventional synthesis methods leave behind inorganic salt impurities that interfere with performance evaluation and material efficiency.

To address this problem, the team developed a purification process that completely removed residual inorganic salts from the PILs. Using SEM-EDX analysis, the researchers confirmed the removal of chlorine and other reaction byproducts from the final materials.

The researchers then examined how different counter anions affect CO2 adsorption behavior. They replaced chloride ions with three different anions of increasing size: acetate, thiocyanate, and trifluoromethanesulfonate.

The experiments showed that larger anions consistently improved the material’s ability to adsorb carbon dioxide.

According to the study, the PIL using the largest anion delivered the highest CO2 uptake, reaching adsorption levels seven times greater than the untreated starting material.

Purity boosts performance

The team focused specifically on poly(diallyldimethylammonium chloride), also known as P[DADMA][Cl], because of its high density of positive charges.

Researchers said residual metal ions from inorganic salts formed during synthesis had not been fully examined in earlier studies. Those impurities may have masked the true adsorption capabilities of the materials.

By eliminating those contaminants, the researchers were able to observe a much clearer relationship between anion size and CO2 adsorption performance.

The study also establishes a possible design strategy for future carbon capture materials. Instead of relying only on new polymer chemistries, engineers may be able to improve performance by precisely tuning anion size and purity levels.

Beyond carbon capture devices, the findings could also support the development of advanced gas separation membranes for industrial use.

The researchers believe the approach may help improve technologies aimed at capturing atmospheric carbon dioxide as well as emissions from factories and power plants.

The study was published in Reaction Chemistry & Engineering.

🔗 Sumber: interestingengineering.com

📌 MAROKO133 Eksklusif ai: Hacker Takes Over Robot Lawnmower, Runs Over Innocent Ma

Is building autonomous robots equipped with sharp oscillating blades that roam your front yard a good idea? What about connecting them to the internet?

We’ll tell you what’s definitely a bad idea: leaving these machines painfully vulnerable to hackers.

Just ask reporter Sean Hollister for The Verge, who suddenly found himself on the, uh, verge of experiencing a grisly incident after someone took control of his Yarbo robot lawn mower.

“I’m lying in the dirt. It’s coming for me. Then, with a lurch, it’s climbing up my chest,” Hollister wrote in a riveting new piece for the outlet. “If Andreas Makris doesn’t stop the 200-pound robot lawn mower in time, it could drag its blades across my body.”

Hollister, fortunately, wasn’t harmed in the making of this article. Makris, a white hat hacker nearly 6,000 miles away in Germany, merely wanted to prove a point.

“I can do whatever I want with all the bots,” Makris told The Verge. “It’s completely unsecured.”

Even if someone pressed the emergency stop button, he added, a hacker like himself could send another command to turn it back on.

Alarmingly, the Yarbo robots all had the same root password, Makris found. In theory, a black hat hacker who discovered this vulnerability could seize control of an entire army of Yarbo robots, since the security flaw is present in all of them. In fact, he created a map that showed the locations of over 11,000 Yarbo robots across the world, forming a global smart lawnmower panopticon.

It raises the possibility for all kinds of havoc. Perhaps someone could pull off an impressively petty act of sabotage against a nemesis neighbor, or start creating crop circles around the country to stoke an old-fashioned UFO panic. Or they could use it to seriously harm someone or spy on them. Maybe they could even steal the autonomous lawnmowers. In any case, it’s not something that should be happening.

The threat isn’t just physical: Makris also demonstrated he could pull the robot owner’s email addresses, wi-fi passwords, and the GPS coordinates of their house.

Even changing the root password wouldn’t necessarily protect owners, either, because every time a Yarbo robot updates its firmware, it resets the root password back to the default, Makris found. And there’s a twist: it appears that this backdoor for remotely accessing the robots was intentionally created by Yarbo.

“It is deployed automatically to every robot, cannot be disabled by the owner, and is actively restored if removed,” Makris told The Verge.

Makris published his findings, after his warnings to Yarbo fell on deaf ears. The company insisted that “your Yarbo remains completely secure and under your exclusive control.”

That’s what prompted Hollister to throw himself under one of the autonomous lawnmowers. “As the first hundred pounds of metal, plastic, and far-too-hackable computer pin my body to the ground — and Makris eventually, thankfully, backs off — I realize this science experiment wasn’t quite as safe as I thought,” he wrote.

Thanks to Makris’s perseverance, and perhaps a little help from Hollister’s absurd stunt, Yarbo finally took notice. Though the company initially claimed its robots’ “diagnostic environment is not publicly accessible,” a senior public relations manager told The Verge that it had identified a fix for at least one of the issues, and promised heaps of other improvements to ensure that the roaming blade-wielding machines aren’t sleeper cells in waiting.

More on robots: Video Shows Amazon Drone Dropping Package Into Pond

The post Hacker Takes Over Robot Lawnmower, Runs Over Innocent Man appeared first on Futurism.

🔗 Sumber: futurism.com