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Engineering News

Theoretical approach for assembling nanoparticles uses an idea similar to separated vinaigrettes — ScienceDaily

Materials scientists at Duke University have theorized a new “oil-and-vinegar” approach to engineering self-assembling materials of unusual architectures made out of spherical nanoparticles. The resulting structures could prove useful to applications in optics, plasmonics, electronics and multi-stage chemical catalysis. The novel approach appeared online on March 25 in the journal ACS Nano. Left to their own tendencies, a system of suspended spherical nanoparticles designed to clump together will try to maximize their points of contact by packing themselves as tightly…

Implants coated in microgel flecks could be key to reducing surgical infections — ScienceDaily

Joint replacements are among the most common elective surgeries — but around one in 100 patients suffer post-surgical infections, turning a routine procedure into an expensive and dangerous ordeal. Now, researchers at Stevens Institute of Technology have developed a “self-defensive surface” for these implants that release targeted micro-doses of antibiotics when bacteria approach, potentially sharply reducing infection rates. The work, led by Matthew Libera, professor of materials science at Stevens, describes a method for coating implant surfaces with a lattice…

Mizzou’s third Neuro Big-Data Symposium comes ‘full circle’

The third Neuro Big-Data Symposium featured projects showcasing software and automation workflows built to improve research and training applications. The third Neuro Big-Data Symposium picked up where its two predecessors left off, taking the next step in the partnership of computing and biological sciences in aid of neuroscience research. The symposium, held March 22 at Bond Life Sciences Center, was conceived as a way of building collaborations to advance important medical research related to the human nervous system, growing the…

Boeing holds test flights for 737 MAX fix: sources

Boeing’s fleet of 737 MAX planes has been grounded since March 13 following two fatal crashes Boeing has flown test flights of its 737 MAX to evaluate a fix for the system targeted as a potential cause of two deadly plane crashes, two sources familiar with the matter said Tuesday. The aviation giant, which has been under fire and its flagship narrow-body planes grounded since March 13, tested the system upgrade on Monday, two days after pilots from American Airlines…

Pioneering medical drone program takes off in North Carolina

A pioneering use of drones to fly blood samples across a North Carolina hospital campus launched Tuesday in the latest move to expand their roles in business and health care. The short trips between WakeMed buildings in Raleigh mark the first time the Federal Aviation Administration has allowed regular commercial flights of drones carrying products, according to UPS and drone company Matternet, which partnered with the hospital on the program. “This is a turning point, and it’s an historic…

Cold water currently slowing fastest Greenland glacier — ScienceDaily

NASA research shows that Jakobshavn Glacier, which has been Greenland’s fastest-flowing and fastest-thinning glacier for the last 20 years, has made an unexpected about-face. Jakobshavn is now flowing more slowly, thickening, and advancing toward the ocean instead of retreating farther inland. The glacier is still adding to global sea level rise — it continues to lose more ice to the ocean than it gains from snow accumulation — but at a slower rate. The researchers conclude that the slowdown of…

The future of stretchable electronics

Image 1: A wide range of stretchable electronic devices are being investigated, including this thin-film transistor matrix, showed relaxed (L) and stretched to about 60% (R). The transistor parameters remain almost unchanged upon stretching up to 140%. Credit: Matsuhisa, N. et al. Nature Communications. 25 July 2015/Creative Commons Stretchable electronics represent a promising new technology for next-generation wearable devices, according to a review published in Science and Technology of Advanced Materials. The technology has many possible applications for healthcare, energy…

Lightening the load

When part consolidation is leveraged to bring down production costs, additive manufacturing becomes more cost competitive than traditional manufacturing methods. Credit: Pixabay The heavier an aircraft is, the more fuel it needs to stay in flight. Every single part adds to the total weight of the aircraft, from the wings to the engines to the bolts that hold everything together. The many parts that make up a vehicle are traditionally made using various machining processes in which raw materials are…

MU team breaks new ground

Jian Lin, Yuan Dong and Jianlin Cheng led the team that recently published “Bandgap prediction by deep learning in configurationally hybridized graphene and boron nitride,” in the high-impact journal npj Computational Materials. Graphene is a single layer of carbon atoms that has a wide array of potential uses, particularly as a candidate material for use in electronic devices, such as LED screens, touch panels, smart phones and solar cells. Graphene’s electrical and optical properties can be significantly altered for better…

Building a Real-time Earnings Tracker into Uber’s New Driver App

This article is the ninth in a series covering how Uber’s mobile engineering team developed the newest version of our driver app, codenamed Carbon, a core component of our ridesharing business. Among other new features, the app lets our population of over three million driver-partners find fares, get directions, and track their earnings. We began designing the new app in conjunction with feedback from our driver-partners in 2017, and began rolling it out for production in September 2018. Our driver…