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Vine-inspired robotic gripper gently lifts heavy and fragile objects

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Vine-inspired robotic gripper gently lifts heavy and fragile objects


In the horticultural world, some vines are especially grabby. As they grow, the woody tendrils can wrap around obstacles with enough force to pull down entire fences and trees.

Inspired by vines’ twisty tenacity, engineers at MIT and Stanford University have developed a robotic gripper that can snake around and lift a variety of objects, including a glass vase and a watermelon, offering a gentler approach compared to conventional gripper designs. A larger version of the robo-tendrils can also safely lift a human out of bed.

The new bot consists of a pressurized box, positioned near the target object, from which long, vine-like tubes inflate and grow, like socks being turned inside out. As they extend, the vines twist and coil around the object before continuing back toward the box, where they are automatically clamped in place and mechanically wound back up to gently lift the object in a soft, sling-like grasp.

The researchers demonstrated that the vine robot can safely and stably lift a variety of heavy and fragile objects. The robot can also squeeze through tight quarters and push through clutter to reach and grasp a desired object.

The team envisions that this type of robot gripper could be used in a wide range of scenarios, from agricultural harvesting to loading and unloading heavy cargo. In the near term, the group is exploring applications in eldercare settings, where soft inflatable robotic vines could help to gently lift a person out of bed.

“Transferring a person out of bed is one of the most physically strenuous tasks that a caregiver carries out,” says Kentaro Barhydt, a PhD candidate in MIT’s Department of Mechanical Engineering. “This kind of robot can help relieve the caretaker, and can be gentler and more comfortable for the patient.”

Barhydt, along with his co-first author from Stanford, O. Godson Osele, and their colleagues, present the new robotic design today in the journal Science Advances. The study’s co-authors are Harry Asada, the Ford Professor of Engineering at MIT, and Allison Okamura, the Richard W. Weiland Professor of Engineering at Stanford University, along with Sreela Kodali and Cosmia du Pasquier at Stanford University, and former MIT graduate student Chase Hartquist, now at the University of Florida, Gainesville.

Open and closed

As they extend, the vines twist and coil around the object before continuing back toward the box, where they are automatically clamped in place and mechanically wound back up to gently lift the object in a soft, sling-like grasp.

Credit: Courtesy of the researchers

The team’s Stanford collaborators, led by Okamura, pioneered the development of soft, vine-inspired robots that grow outward from their tips. These designs are largely built from thin yet sturdy pneumatic tubes that grow and inflate with controlled air pressure. As they grow, the tubes can twist, bend, and snake their way through the environment, and squeeze through tight and cluttered spaces.

Researchers have mostly explored vine robots for use in safety inspections and search and rescue operations. But at MIT, Barhydt and Asada, whose group has developed robotic aides for the elderly, wondered whether such vine-inspired robots could address certain challenges in eldercare — specifically, the challenge of safely lifting a person out of bed. Often in nursing and rehabilitation settings, this transfer process is done with a patient lift, operated by a caretaker who must first physically move a patient onto their side, then back onto a hammock-like sheet. The caretaker straps the sheet around the patient and hooks it onto the mechanical lift, which then can gently hoist the patient out of bed, similar to suspending a hammock or sling.

The MIT and Stanford team imagined that as an alternative, a vine-like robot could gently snake under and around a patient to create its own sort of sling, without a caretaker having to physically maneuver the patient. But in order to lift the sling, the researchers realized they would have to add an element that was missing in existing vine robot designs: Essentially, they would have to close the loop.

Most vine-inspired robots are designed as “open-loop” systems, meaning they act as open-ended strings that can extend and bend in different configurations, but they are not designed to secure themselves to anything to form a closed loop. If a vine robot could be made to transform from an open loop to a closed loop, Barhydt surmised that it could make itself into a sling around the object and pull itself up, along with whatever, or whomever, it might hold.

For their new study, Barhydt, Osele, and their colleagues outline the design for a new vine-inspired robotic gripper that combines both open- and closed-loop actions. In an open-loop configuration, a robotic vine can grow and twist around an object to create a firm grasp. It can even burrow under a human lying on a bed. Once a grasp is made, the vine can continue to grow back toward and attach to its source, creating a closed loop that can then be retracted to retrieve the object.

“People might assume that in order to grab something, you just reach out and grab it,” Barhydt says. “But there are different stages, such as positioning and holding. By transforming between open and closed loops, we can achieve new levels of performance by leveraging the advantages of both forms for their respective stages.”

Gentle suspension

As a demonstration of their new open- and closed-loop concept, the team built a large-scale robotic system designed to safely lift a person up from a bed. The system comprises a set of pressurized boxes attached on either end of an overhead bar. An air pump inside the boxes slowly inflates and unfurls thin vine-like tubes that extend down toward the head and foot of a bed. The air pressure can be controlled to gently work the tubes under and around a person, before stretching back up to their respective boxes. The vines then thread through a clamping mechanism that secures the vines to each box. A winch winds the vines back up toward the boxes, gently lifting the person up in the process.

“Heavy but fragile objects, such as a human body, are difficult to grasp with the robotic hands that are available today,” Asada says. “We have developed a vine-like, growing robot gripper that can wrap around an object and suspend it gently and securely.”

“There’s an entire design space we hope this work inspires our colleagues to continue to explore,” says co-lead author Osele. “I especially look forward to the implications for patient transfer applications in health care.”

“I am very excited about future work to use robots like these for physically assisting people with mobility challenges,” adds co-author Okamura. “Soft robots can be relatively safe, low-cost, and optimally designed for specific human needs, in contrast to other approaches like humanoid robots.”

While the team’s design was motivated by challenges in eldercare, the researchers realized the new design could also be adapted to perform other grasping tasks. In addition to their large-scale system, they have built a smaller version that can attach to a commercial robotic arm. With this version, the team has shown that the vine robot can grasp and lift a variety of heavy and fragile objects, including a watermelon, a glass vase, a kettle bell, a stack of metal rods, and a playground ball. The vines can also snake through a cluttered bin to pull out a desired object.

“We think this kind of robot design can be adapted to many applications,” Barhydt says. “We are also thinking about applying this to heavy industry, and things like automating the operation of cranes at ports and warehouses.”

This work was supported, in part, by the National Science Foundation and the Ford Foundation.



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Crypto Magnate Do Kwon Sentenced to 15 Years in Prison

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Crypto Magnate Do Kwon Sentenced to 15 Years in Prison


South Korean crypto entrepreneur and prosecuted fraudster Do Kwon was sentenced to 15 years in prison by a US federal judge in the Southern District of New York on Thursday.

Kwon cut a solemn figure as he was escorted into the courtroom by US Marshals, his head bowed, his cheeks sunken as if he’d lost a significant amount of weight. He wore a bright lemon-colored prison jumpsuit over a long-sleeve shirt, with cuffs around his waist and hands.

In August, Kwon pleaded guilty to defrauding investors who purchased crypto coins issued by his company, Terraform Labs. In May 2022, the abrupt collapse of those coins wiped out $40 billion and sent the crypto economy into a tailspin that bankrupted numerous other companies.

“Kwon’s fraud was colossal in scope, permeating virtually every facet of Terraform’s purported business,” US prosecutors wrote in a recent court filing. “His rampant lies left a trail of financial destruction in their wake.”

Given the chance to address the court on Thursday, Kwon said he took sole responsibility for the fraud. After thanking his former coworkers and supporters, some of whom had gathered in the public gallery, he became emotional. His lawyers, to his left and right, rubbed his back.

The offenses to which Kwon pleaded guilty carry a maximum sentence of 25 years in prison. Before the hearing, prosecutors had petitioned for a 12-year prison term. But the presiding judge, Paul Engelmayer, ruled that a more punitive sentence was required in order to deter future crypto fraudsters.

“This case will be there as a reminder of breaking bad and what happens,” Engelmayer told the courtroom. “To the next Do Kwon, if you commit fraud, you will lose your liberty for a long time.”

As he was bundled into an elevator outside the courtroom after receiving his sentence, Kwon appeared to be holding back tears. The chain that hung between his feet rattled against the floor.

Not-So-Stablecoin

Kwon started Terraform in 2018, alongside cofounder Daniel Shin. Two years later, the company announced plans to launch TerraUSD (UST), a stablecoin whose value was supposedly pegged to the US dollar by way of an algorithm. The algorithm would effectively tie UST to a second coin issued by the firm, LUNA. A dollar’s worth of LUNA could be exchanged for a dollar’s worth of UST, and vice versa. If UST were to ever slip below $1, traders would be incentivized to buy LUNA until the target value was restored.

“It was an intriguing and very novel mechanism,” Noelle Acheson, an analyst who previously worked at the crypto brokerage Genesis, told WIRED last year. “Many smart people believed it would work.”

In May 2022, the price-balancing system belched. When traders sold large quantities of UST, it slipped from its dollar peg, leading to a panicked sell-off that drove the price practically to zero. In a now-infamous tweet, Kwon tried to stop the selloff, writing, “deploying more capital—steady lads.” But the value of UST and LUNA plummeted, wiping $40 billion from the market.



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RFK Jr.’s Health Department Is Pondering a National Men’s Health Initiative

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RFK Jr.’s Health Department Is Pondering a National Men’s Health Initiative


The US Department of Health and Human Services is considering launching a federal men’s health initiative, a source at the agency tells WIRED.

Brian Christine, who will be sworn in on December 12 as assistant secretary for health at HHS and head of the United States Public Health Service Commissioned Corps, called for such an effort Wednesday during a Food and Drug Administration panel on testosterone replacement therapy (TRT) for men. A spokesperson for HHS declined to comment.

“We have a men’s health crisis in this country. Now we need a national strategy,” he said as part of a call for creating so-called Men’s Health Centers of Excellence across the country that would collaborate with each other, share information, and generate data to inform policy and programs around men’s health.

Participants in Wednesday’s FDA panel—which included federal health officials, urologists, experts on male sexual health, and the CEO of a TRT pharmaceutical company—voiced support for expanding the eligibility criteria for TRT and removing testosterone from the FDA’s controlled substances list. Earlier this year, the FDA held a similar panel on hormone replacement therapy for menopausal women and announced in November that it would remove a black box warning from the medications.

The Trump administration has aggressively canceled equity and transgender initiatives across the government and cut hundreds of millions of dollars in funding for research into women’s and LGBTQ health.

During the panel discussion, Christine called attention to men’s health more broadly, pointing out the widening gender gap in life expectancy in the US and that 44 percent of men surveyed in 2023 didn’t get an annual physical. While rates of depression are similar among men and women, men are much less likely to seek treatment despite suicide rates in the US being much higher in men. Substance abuse compounds that problem, he said, with the majority of opioid overdoses occurring in men.

“There are fewer federal programs targeting men’s health concerns than women,” Christine said. “None of this suggests that we should back off our commitment to women’s health. No—never. But we do need a parallel track for men’s health in this country.”

Christine also couched men’s health concerns, particularly obesity, as a national security issue. “Men’s health concerns truly affect defense preparedness, defense readiness and the safety of this country against our enemies,” he said, adding that obesity is a barrier to serving in the military.



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How Taiwan Made Cashless Payments Cute

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How Taiwan Made Cashless Payments Cute


At a 7-Eleven convenience store in Taiwan, you can pick up a 4-inch plushie of Miffy, the bunny character from the Netherlands, a mini bento box charm complete with a realistic chicken drumstick, or a tiny plastic rotary phone. Produced by iCash Corporation (a 7-Eleven affiliate), these keychains are more than just trinkets: Each contains a contactless chip that connects it to Taiwan’s elaborate stored-value payment system.

iCash cards, along with those made by competitors like EasyCard and iPASS, can be used to ride the subway and buses, as well as to make purchases at convenience stores and other retailers in Taiwan. The over-the-top branded keychains, which cost anywhere from $10 to over $30, generate modest direct sales. But their real value lies in their marketing power, drawing shoppers deeper into 7-Eleven’s rewards ecosystem and keeping small payments inside its orbit.

Decentralized and Deeply Local

Over the past decade, iCash Corporation and its rivals have turned dozens of everyday products in Taiwan into limited-edition keychains. Many are miniature versions of snacks and household items available at 7-Eleven stores, such as a can of the sports drink Super Supau, a tube of Darlie toothpaste, and a cup of Uni-President’s classic yellow pudding dessert. Those who prefer something weirder can get a teeny package of toilet tissues, or a doll-sized Scotch-Brite kitchen sponge. When I lived in Taipei for a few months last year, I paid for things with a bag of crinkle-cut potato chips.

iCash Corporation has also licensed Sanrio characters like Hello Kitty and Cinnamoroll, as well as Pikachu from Pokémon and Stitch from Disney’s Lilo & Stitch. One of my favorite Taiwanese payment cards isn’t even a keychain at all—it’s a plastic version of Sailor Moon’s wand made by EasyCard, which (naturally) lights up when you complete a transaction.

I have been obsessed with these keychains and novelty toys since I began reporting on Taiwan several years ago. They’re the most delightful side effect of the island’s move toward cashless payments, and they demonstrate just how different Taiwan’s digital infrastructure is from China’s. Nearly every consumer transaction in China happens through either Alibaba or Tencent, two tech giants that have a near monopoly on payments. Whether you’re buying a bowl of noodles at a street stall or a designer purse in a Shanghai boutique, you will almost always find both an Alipay and WeChat Pay QR code.

In contrast, Taiwan has developed a pluralistic network of NFC cards and mobile wallets layered atop its dense transit system and network of convenience stores. The result is a cashless framework that is tactile, decentralized, and deeply local. In Taipei, people often “tap” to pay, while in Beijing, they “scan.” At least in some ways, Taiwan’s technology is arguably just as sophisticated as China’s. In fact, Alibaba followed the island’s lead last year and launched its own tap payment method.



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