An anonymous reader quotes a report from Phys.Org: Solar cells can now be made so thin, light and flexible that they can rest on a soap bubble. The new cells, which efficiently capture energy from light, could offer an alternative way to power novel electronic devices, such as medical skin patches, where conventional energy sources are unsuitable. Until now, ultrathin organic solar cells were typically made by spin-coating or thermal evaporation, which are not scalable and which limit device geometry. This technique involved using a transparent and conductive, but brittle and inflexible, material called indium tin oxide (ITO) as an electrode. To overcome these limitations, the team applied inkjet printing. "We formulated functional inks for each the layer of the solar cell architecture," says Daniel Corzo, a Ph.D. student in Baran's team.

Instead of ITO, the team printed a transparent, flexible, conductive polymer called PEDOT:PSS, or poly(3,4-ethylenedioxythiophene) polystyrene sulfonate. The electrode layers sandwiched a light-capturing organic photovoltaic material. The whole device could be sealed within parylene, a flexible, waterproof, biocompatible protective coating. [...] After optimizing the ink composition for each layer of the device, the solar cells were printed onto glass to test their performance. They achieved a power conversion efficiency (PCE) of 4.73 percent, beating the previous record of 4.1 percent for a fully printed cell. For the first time, the team also showed that they could print a cell onto an ultrathin flexible substrate, reaching a PCE of 3.6 percent. The research has been published in the journal Advanced Materials Technologies.

Earlier today, Elon Musk demonstrated his startup Neuralink's brain link device working in a pig named Gertrude. While the science and the device itself were front-and-center at the presentation, the surgical robot the company debuted is equally as important because it's designed to handle the full surgical installation process. "That includes opening up the scalp, removing a portion of the skull, inserting the hundreds of 'thread' electrodes 6mm deep along with the accompanying chip, then closing the incision," reports CNET. TechCrunch takes a closer look at the robot: The rounded polycarbonate sci-fi design of the brain surgeon bot looks like something out of the Portal franchise, but it's actually the creation of Vancouver-based industrial design firm Woke Studio. To be clear, Musk's engineers and scientists have created the underlying technology, but Woke built the robot's look and user experience, as well as the behind-the-ear communication end piece that Neuralink has shown in prior presentations. Neuralink's bot features clean white (required for ensuring sterility, per Woke), arcing lines and smooth surfaces for a look that at once flags its advanced technical capabilities, but also contains some soothing and more approachable elements, which is wise considering what the machine is intended to do.

Woke says the Neuralink surgical robot can be separated into three main parts: The head, the body and base. The head of the robot is that helmet-like piece, which actually holds the head of the patient. It also includes a guide for the surgical needle, as well as embedded cameras and sensors to map the patent's brain. The intent of the design of this piece, which includes a mint-colored interior, is to give the robot "an anthroprmorphic characteristic" that helps distract from the invasive nature of the procedure. There are also single-use disposable bags that line the interior of the helmet for sterile operation. The Neuralink robot also has a "body," that humped rear assembly, which includes all the parts responsible for the motion of the robot as it sets up from the procedure. The third element is the base, which basically keeps the whole thing from tipping over, and apparently also contains the computing brains of the brain-bot itself.

With a pig named Gertrude, Elon Musk demonstrated his startup Neuralink's technology to build a digital link between brains and computers. A wireless link from the Neuralink device showed the pig's activity activity as it snuffled around a pen on stage Friday night. CNET reports: The demonstration shows the the technology to be significantly closer to delivering on Musk's radical ambitions than during a 2019 product debut, when Neuralink only showed photos of a rat with a Neuralink connected via a USB-C port. It's still far from reality, but Musk said the US Food and Drug Administration in July granted approval for "breakthrough device" testing. Musk also showed a second-generation device that's more compact and that fits into a small cavity hollowed out of a hole in a skull. "It's like a Fitbit in your skull with tiny wires," Musk said of the device. It communicates with brain cells with 1,024 thin electrodes that penetrate within brain cell.

An anonymous reader shares a report: Last year, repair guide site iFixit tore down the Fairphone 3 and gave the modular-designed phone a rare perfect 10/10 repairability score. Today, Fairphone demonstrated just how far its philosophy of modular phone design can take its users by offering the massively upgraded cameras from its newly released Fairphone 3+ model to owners of the earlier Fairphone 3. Fairphone designs are noticeably bulkier than typical smartphone designs -- but they have a reason to be. Its components have been split into seven replaceable modules in order to extend the service life of each Fairphone. Battery getting weak? It's replaceable. Dropped your phone and broke the screen? Not only replaceable, but guaranteed replaceable -- and for reasonably technical end users, user-replaceable -- with easily purchased parts from the factory. The original Fairphone 3 launched with a 12 megapixel rear camera and an 8 megapixel front camera. The newly released Fairphone 3+ is essentially the same phone, but it offers a refresh on the camera modules, bringing the rear camera to 48 megapixels and the front to 16 megapixels. Owners of the original Fairphone 3 can upgrade by simply purchasing replacement modules from the Fairphone store and replacing them.