Connect with us

News

Engineers use the heart’s energy to self-charge a bio-implant device

Published

on

Engineers from Dartmouth College have created a dime-sized device that could allow implanted biomedical devices to be charged indefinitely using the natural kinetic (motion) energy of the heart. In a study conducted over the last three years and published in the journal Advanced Materials Technologies in January this year, an implant with piezoelectric materials was combined with a pacemaker to convert heartbeats into electricity. Considering the 5-10 year replacement requirement for the average battery-powered implantable biomedical device, this invention could soon mean a significant reduction in invasive and risky surgeries.

Piezoelectricity is mechanical stress converted into electricity. Pressure, sound waves, and other vibrations coming into contact with piezoelectric materials cause the materials’ atoms to shift, creating positive and negative charges. In the Dartmouth invention, moving heart tissue squeezes a flexible container with piezoelectric material inside, creating charges which are sent through the pacemaker’s lead wire back to its battery. This continuous charging cycle, in theory, would enable any biomedical implant where motion was a component of the device’s location to last for the lifetime of a patient.

The project’s engineers have two more years of National Institutes of Health (NIH) funding to complete a pre-clinical and regulatory approval process, and a commercially available version is expected to be about five years away. The potential for the device has already been recognized by significant players in the biotech industry. Andrew Closson, one of the study’s authors, explained in a news article about the device, “There is already a lot of expressed interest from the major medical technology companies…[and we are]…moving forward with the entrepreneurial phase of this effort.”

An implanted piezoelectric patch gathers voltage produced by anesthetized sheep. | Credit: University of Illinois and University of Arizona

The idea of harvesting heart energy is not a new one. A team of researchers from the University of Illinois demonstrated a proof-of-concept in 2014 using a flexible, piezoelectric patch on anesthetized sheep. After stitching multiple patches in an optimal orientation on the sheep’s heart, the voltage produced was found to be sufficient to power a standard pacemaker. Other devices that could be powered by this type of technology include cochlear implants and implantable defibrillators.

Implantable electronic medical devices are frequently seeing improvements in the field of biotechnology and thus directly relevant to the Dartmouth engineers’ invention. In November of last year, a study was published demonstrating the effectiveness of a spinal implant used to amplify brain signals. After epidural electrical stimulation was delivered to the spinal cords of three paralyzed participants, all were able to regain motion in their lower limbs. Piezoelectric functionality in a device like this one would be a natural inclusion.

Advertisement

Accidental computer geek, fascinated by most history and the multiplanetary future on its way. Quite keen on the democratization of space. | It's pronounced day-sha, but I answer to almost any variation thereof.

Advertisement
Comments

News

Tesla rolls out update to Robotaxi service that makes pickups so much better

The update was confirmed by CEO Elon Musk in a post on social media platform X.

Published

on

Credit: Joe Tegtmeyer/X

Tesla has rolled out a minor update to its Robotaxi service that will likely make the driverless ride-hailing system notably better and more convenient for consumers. The update was confirmed by CEO Elon Musk in a post on social media platform X.

Robotaxi service updates

The Robotaxi update was observed by users of the driverless ride-hailing service over the weekend. As observed by Tesla enthusiast Owen Sparks, the Austin Robotaxi fleet no longer strictly navigates to the pickup point listed on the app. Instead, the Robotaxis now stop in the exact location of a user’s phone.

Elon Musk confirmed the update, noting in a post on X that the change was an upgrade to the service. It’s a reactively minor update in the grand scheme of things, but it should make the Robotaxi service feel more organic and humanlike.

Driverless taxis

Tesla’s Robotaxi service in Austin has been receiving good reviews from users since it was launched, with many praising the vehicles for their cautious and humanlike behavior. Some users on social media even noted that Tesla’s Robotaxis feel safer on the road than cars from services like Uber, which are manually driven.

Tesla’s minor updates to its Robotaxi service are expected to make the customer experience of the driverless ride-hailing service more refined. By doing so, Tesla could ease customers into its service, even if only a fraction of ride-hailing users are familiar with fully autonomous cars. With this in mind, even small updates like picking up customers based on their specific phone location will likely go a long way towards making Tesla’s Robotaxis more accepted by the general public. 

Advertisement
Continue Reading

News

Tesla sells 3 million Model 3 since 2017, one in every 1.5 minutes

This translates to one Model 3 being sold every 1.5 minutes on average for the past eight years.

Published

on

Credit: Tesla China

Tesla has announced that the Model 3 sedan has sold 3 million units since it started customer deliveries in 2017. As per the electric vehicle maker, this translates to one Model 3 being sold every 1.5 minutes on average for the past eight years.

Massive Milestone

Tesla China VP Grace Tao announced the Model 3’s milestone on Weibo, highlighting that the all-electric sedan has been a tried and tested vehicle that has earned accolades throughout its tenure. She also highlighted that in a recent test, Car and Driver gave the Model 3 a perfect score. 

“Model 3 has become the choice of more than 3 million car owners worldwide, and has won the global pure electric sedan sales champion for seven consecutive years,” Tao wrote in her Weibo post. 

She also invited everyone to try and test drive the Model 3 sedan, so they could experience the vehicle personally. “Everyone is welcome to come to the store to test drive and experience this global car and champion car,” the Tesla executive added.

Tesla’s Mainstream Bet

There was once a time when Tesla’s future relied on the Model 3’s success. When the Model 3 was unveiled, Tesla was still gaining its footing as a premium automaker that produces the Model S and Model X. The Model 3 was the company’s first mass-market car, and it was Tesla’s first foray into serious mass production. At the time, it was no exaggeration to state that Tesla’s survival depended on the Model 3.

The Model 3’s runaway success was a victory not just for Tesla but for the overall electric vehicle sector as a whole. Because the Model 3 was simply a great car, electric or otherwise, it was able to prove that there is serious demand for reasonably-priced mass market EVs. It was also able to pave the way for the Model Y, Tesla’s mass market all-electric crossover that ultimately became the world’s best-selling car in 2023 and 2024.

Advertisement
Continue Reading

Investor's Corner

Tesla ‘Model Q’ gets bold prediction from Deutsche Bank that investors will love

Tesla’s Model Q could be on the way soon, and a new note from Deutsche Bank thinks it will contribute to Q4 deliveries.

Published

on

Credit: @JoeTegtmeyer/X

The Tesla “Model Q” has been in the rumor mill for the company for several years, but a recent note from Wall Street firm Deutsche Bank seems to indicate that it could be on its way in the near future.

This comes as Tesla has been indicating for several quarters that its development of affordable models was “on track” for the first half of 2025. The company did not say it would unveil the vehicles in the first half, but many are anticipating that more cost-friendly models could be revealed to the public soon.

Potential affordable Tesla “Model 2/Model Q” test car spotted anew in Giga Texas

The Deutsche Bank note refers to one of the rumored affordable models as the “Model Q,” but we’ve also seen it referred to as the “Model 2,” amongst other names. Tesla has not officially coined any of its upcoming vehicles as such, but these are more of a universally accepted phrase to identify them, at least for now.

The rumors stem from sentiments regarding Tesla’s 2025 delivery projections, which are tempered as the company seeks to maintain a steady pace compared to 2023 and 2024, when it reported 1.8 million deliveries.

Deutsche Bank’s analysts believe the deliveries could be around 1.58 million, but they state this is a cautious stance that could be impacted by several things, including the potential launch of the Model Q, which they believe will make its way to market in Q4:

“Looking at the rest of the year, we maintain a cautious stance on volume calling for 1.58m vehicle deliveries (-12% YoY) vs. consensus +1.62m, with the timing of Model Q rollout as the key swing factor (we now assume only 25k in Q4). In China, Tesla will introduce the Model Y L this fall (6 inch longer wheel base allowing for larger 3-row seating with six seats).”

Interestingly, the same firm also predicted that the Model Q would launch in the first half of the year based on a note that was released in early December 2024.

Those estimations came from a reported meeting that Deutsche Bank had with Tesla late last year, where it said it aimed to launch the Model Q for less than $30,000 and aimed for it to compete with cars like the Volkswagen ID.3 and BYD Dolphin.

Tesla’s Q2 Earnings Call is slated for this Wednesday and could reveal some additional details about the affordable models.

Continue Reading

Trending