Lifeboat Foundation

On May 5, 1809, Mary Kies became the first woman to receive a patent in the United States. (It was for her technique of weaving straw with silk.)

Of course, women inventors existed before this time, but the property laws in many states made it illegal for women to own property on their own. This led some women to apply for patents in their husbands’ names if they decided to apply at all.

As of last year, only 10 percent of U.S. patent holders were women, although women account for half of doctoral degrees in science and engineering. This disparity is due in part to the U.S. Patent and Trademark Office being more likely to reject patents with women as sole applicants.

Continue reading “Who invented the dishwasher, windshield wiper, caller ID? Women created these 50 inventions” »

Leaving aside my opinion of Steven Pinker, a straight guy who has no clue about how he affects others, mmmm k I’ll give him this one.

Just saying.

Continue reading “Finding the right ‘dose’ for solar geoengineering” »

Four-dimensional (4D) printing can create complex 3D geometries that react to environmental stimuli, opening new design opportunities in materials science. A vast majority of 4D printing approaches use polymer materials, which limit the operational temperature during the process of engineering. In a recent study, Xiaolong Chen and co- workers at the Dyson School of Design and Engineering, Department of Earth Science and Engineering and Department of Materials at the Imperial College of London, U.K., developed a new multi-metal electrochemical 3D printer. The device was able to construct bimetallic geometries by selectively depositing different metals with temperature-responsive behavior programmed into the printed structure. In the study, they demonstrated a meniscus confined electrochemical 3D printing approach using a multi-print head design and nickel and copper materials as examples, the ability can be transferred to other deposition solutions. The results are now published in Scientific Reports.

Boston University researchers, Xin Zhang, a professor at the College of Engineering, and Reza Ghaffarivardavagh, a Ph.D. student in the Department of Mechanical Engineering, released a paper in Physical Review B demonstrating it’s possible to silence noise using an open, ringlike structure, created to mathematically perfect specifications, for cutting out sounds while maintaining airflow.

“Today’s sound barriers are literally thick heavy walls,” says Ghaffarivardavagh. Although noise-mitigating barricades, called sound baffles, can help drown out the whoosh of rush hour traffic or contain the symphony of music within concert hall walls, they are a clunky approach not well suited to situations where airflow is also critical. Imagine barricading a jet engine’s exhaust vent—the plane would never leave the ground. Instead, workers on the tarmac wear earplugs to protect their hearing from the deafening roar.

Continue reading “Researchers develop ‘acoustic metamaterial’ that cancels sound” »

3D printing has revolutionized the fields of healthcare, biomedical engineering, manufacturing and art design.

For a newborn giraffe or wildebeest, being born can be a perilous introduction to the world—predators lie in wait for an opportunity to make a meal of the herd’s weakest member. This is why many species have evolved ways for their juveniles to find their footing within minutes of birth.

It’s an astonishing evolutionary feat that has long inspired biologists and roboticists—and now a team of USC researchers at the USC Viterbi School of Engineering believe they have become the first to create an AI-controlled robotic limb driven by animal-like tendons that can even be tripped up and then recover within the time of the next footfall, a task for which the robot was never explicitly programmed to do.

Francisco J. Valero-Cuevas, a professor of Biomedical Engineering a professor of Biokinesiology & Physical Therapy at USC in a project with USC Viterbi School of Engineering doctoral student Ali Marjaninejad and two other doctoral students—Dario Urbina-Melendez and Brian Cohn, have developed a bio-inspired algorithm that can learn a new walking task by itself after only 5 minutes of unstructured play, and then adapt to other tasks without any additional programming.

Continue reading “A robotic leg, born without prior knowledge, learns to walk” »

One of the key misconceptions about solar geoengineering—putting aerosols into the atmosphere to reflect sunlight and reduce global warming—is that it could be used as a fix-all to reverse global warming trends and bring temperature back to pre-industrial levels.

It can’t. Applying huge doses of solar geoengineering to offset all warming from rising atmospheric CO₂ levels could worsen the climate problem—particularly rainfall patterns—in certain regions. But could smaller doses work in tandem with emission cuts to lower the risks of a changing climate?

New research from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS), in collaboration with MIT and Princeton University, finds that if solar geoengineering is used to cut global temperature increases in half, there could be worldwide benefits without exacerbating change in any large geographic area.

Canadian researchers have developed a laser probe that uses changes in light patterns to detect melanoma, the deadliest form of skin cancer.

The device works on the principle that light waves change as they pass through objects. Cancerous cells have a different physical profile to healthy cells, and the researchers designed a system that can detect these patterns instantly. By determining the optical polarisation of different skin lesions, the team was able to distinguish cancerous from non-cancerous tissues.

“With skin cancer, there’s a saying that if you can spot it you can stop it – and that’s exactly what this probe is designed to do,” said researcher Daniel Louie, a PhD student who constructed the device as part of his studies in biomedical engineering at the University of British Columbia (UBC).