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Category: engineering – Page 3

Self-repairing, recyclable substrate developed for durable soft sensors

Soft sensors convert movement, temperature and moisture into electrical signals. Repeated bending and friction can cause their metal conductors to peel from the underlying polymer, while physical damage, such as cuts, can disable the device. Commonly used petroleum-derived substrates are also environmentally unfriendly because they are difficult to recycle.

Researchers at the College of Design and Engineering at the National University of Singapore (NUS CDE) have developed a soft, stretchable substrate that repairs itself, firmly grips metal conductors and can be remolded or broken down after use. It could make wearable patches and electronic skin used in applications such as health monitoring and virtual reality more durable while enabling the recovery of valuable components, thus reducing electronic waste.

The new material, called an intrinsically dynamic biosubstrate (IDBS), was developed by researchers led by assistant professor Zhai Wei from the Department of Mechanical Engineering at NUS CDE. Their findings were published in Nature Sustainability on June 19, 2026.

Polar molecules and polymer bridges overcome two key limits in organic electronics

A research team led by Professor Kang Bosoek of the SKKU Advanced Institute of Nano Technology (SAINT), Department of Nano Engineering and Department of Semiconductor Convergence Engineering at Sungkyunkwan University has developed two new molecular design technologies to enhance the electrical conductivity of organic electronic materials. One technology generates a greater number of charge carriers within a polymer, while the other connects transport pathways so that charge can move without interruption.

The findings were published, respectively, in the Journal of the American Chemical Society and Nature Communications. The paper published in the Journal of the American Chemical Society was also selected as a cover article.

Organic semiconductors are lightweight and flexible materials expected to be used in next-generation displays, wearable electronics and sensors. However, for practical use in electronic devices, their electrical conductivity must be improved—which requires generating a sufficient amount of charge and ensuring that the charge, once generated, can move rapidly through the material. Through two separate studies, the research team addressed these two challenges in a complementary way.

Pixel patterns harness diffraction for faster, more accurate nanoscale 3D printing

Researchers at the George W. Woodruff School of Mechanical Engineering have developed a new approach to nanoscale 3D printing that improves both speed and fidelity, overcoming a challenge that has limited the technology’s broader use in manufacturing.

Their work, led by Sourabh Saha, associate professor and Woodruff Faculty Fellow, and Harnjoo Kim, who conducted the research during his doctoral studies and later as a postdoctoral fellow in Saha’s lab, was recently published in the journal Nature Communications.

Nanoscale 3D printing allows researchers to create structures thousands of times smaller than the width of a human hair. These structures have potential applications in fields ranging from advanced computing and optics to biomedical devices and clean energy technologies. However, increasing printing speed often comes at the expense of quality.

Ion pumping platform simultaneously cleans salty wastewater and recovers valuable metals

Industrial wastewater from electronics manufacturing, metal processing and other sectors often contains two difficult pollutants at once: high levels of salt and toxic heavy metals. Current treatment methods typically address those problems separately, creating costly, complex systems that can produce hazardous brines or metal-laden sludge. Now, a group of researchers at Rice University and Vanderbilt University has created an electrochemical platform that could do both jobs at once.

A team led by Shihong Lin, associate professor of civil and environmental engineering at Rice, has shown that electrochemical ion pumping (EIP) can be programmed to desalinate wastewater while selectively recovering dissolved metals such as copper.

The approach, published in Nature Water, could offer a new path toward water reuse and resource recovery from industrial brines. Longqian Xu, a postdoctoral researcher at Rice, is the study’s first author.

Barry Ptolemy on “Transcendent Man”

In August 2010, I got on the phone with a filmmaker who had spent three years following Ray Kurzweil around the world with a camera.

Barry Ptolemy was twelve years old when he stood on the set of E.T. next to Spielberg. Decades later, he read The Singularity is Near and decided his first feature film would not be fiction.

Transcendent Man had not opened in theaters yet when we spoke. Back then the claims in it sounded like a pitch meeting nobody would greenlight: intelligence that stops being biological, no clean line left between human and machine, aging reversed, world hunger solved, death itself treated as an engineering problem.

Read that list again in 2026 and tell me which line you want to laugh at.

Some of it looks naive now. Some of it looks early. What stayed with me is what Barry said about the man behind the predictions, because the film is not really a documentary about #ArtificialIntelligence. It is a documentary about a son and his father, and about what grief will build if you give it enough compute.

I asked him whether he believed Ray. Sixteen years on, his answer is still the part I turn over in my head when people tell me the #Singularity is finally here.

Continue reading “Barry Ptolemy on “Transcendent Man”” | >

Researchers Simulate Alzheimer’s Progression Across the Entire Brain

This hypothesis has led to a new “whole-brain” mathematical and computational model developed at the MOX Laboratory of the Department of Mathematics of Politecnico di Milano. The model is designed to describe in an integrated way the interaction between the spread of amyloid beta and the functioning of the cerebral vascular network. The aim is to provide a tool capable of simulating, on the scale of the whole organ, how small biological or vascular alterations can evolve over time and contribute to neurodegeneration. The model and the accompanying scientific study have been published in the prestigious scientific journal Computer Methods in Applied Mechanics and Engineering.

The model integrates two scales of analysis. On the one hand, it describes the dynamics of the production, transformation, diffusion and elimination of the healthy and pathological forms of amyloid beta. On the other, it describes blood flow through a “macroscopic” description of arteries, capillaries and veins, treating brain tissue as a porous medium perfused by blood vessels, through a macroscopic compartmental model. The two components are then connected to represent the possible mechanism of mutual reinforcement between protein accumulation and vascular dysfunction.

The simulations show a particularly relevant result: the brain can evolve into different states depending on the initial conditions. Small localised amounts of amyloid beta can be eliminated, allowing the system to return to a healthy state. Conversely, larger amounts can trigger a self-sustained spread of the pathology at brain scale.

Neutrons reveal how friction stir welding could strengthen steel armor

Using neutrons at the Department of Energy’s Oak Ridge National Laboratory, researchers from The Ohio State University are studying residual stress caused by friction stir welding (FSW) to reveal how to strengthen armor steel welds, like those used in military vehicles. Their findings were published in the Journal of Materials Processing Technology.

“We are trying to develop a new way to join armor steel that produces joints with better ballistic and blast performance,” said Antonio Ramirez, a professor of materials science and engineering at OSU. “In the end, we want to be able to make structures that perform better.”

The team’s results will help fine-tune welding parameters to create a roadmap for engineering better armor systems.

Bioceramic-coated implant improves osteoporotic fracture healing through timed magnesium release

Seoul National University (SNU) College of Engineering announced that a research team led by Nathaniel S. Hwang, a professor in the Department of Chemical and Biological Engineering, has developed a bioceramic fracture fixation material that promotes bone regeneration by precisely controlling the timing of magnesium ion (Mg²⁺) release to suppress inflammatory immune responses during osteoporotic fracture healing.

The research team discovered that magnesium ions do not always promote bone regeneration; rather, their effects on immune responses and bone healing vary depending on the timing and duration of release. Based on this finding, the team proposed a fracture fixation material that releases magnesium ions according to the stages of healing and demonstrated its bone regeneration efficacy through animal experiments.

Furthermore, the study suggests the possibility of advancing fracture treatment materials beyond simple mechanical fixation devices into therapeutic technologies that actively regulate immune responses according to healing stages. The newly developed material is expected to be applied to next-generation orthopedic medical devices and personalized bone regeneration therapies for patients with osteoporotic fractures.

Air Launch, Hypersonics & Responsive Space: Inside Starfighters Space | Tim Franta

Tim Franta, CEO, Starfighters Space

For decades, getting to space has largely meant one thing: launching vertically atop massive rockets from fixed launch pads. But what if the future of space access also includes aircraft capable of flying at more than twice the speed of sound, launching payloads from the edge of the atmosphere, and providing researchers with affordable access to hypersonic flight and microgravity?

Joining us today is Tim Franta, Chief Executive Officer of Starfighters Space (https://starfightersspace.com/), an aerospace company operating the world’s only commercial fleet of flight-ready Mach 2+ F-104 Starfighters. Based at NASA’s Kennedy Space Center, the company is building capabilities that span hypersonic flight testing, airborne research, astronaut and pilot training, and an ambitious air-launch platform known as STARLAUNCH, designed to provide more flexible and responsive access to space.

Tim brings an unusual blend of aerospace leadership, public policy, infrastructure development, and strategic finance. Before leading Starfighters Space, he helped shape Florida’s modern space ecosystem through leadership roles with Energy Florida and the Florida Space Authority, where he worked on launch infrastructure, legislation, and hundreds of millions of dollars in space-related investment.

Today we’ll discuss why aircraft may become an increasingly important part of the space economy, how commercial innovation is changing access to orbit, the growing importance of hypersonic technologies, and what the next decade of aerospace infrastructure might look like.

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