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Category: Mechanical Engineering

‘Shape Memory’ Effect Demonstrated in Gold Particles — ScienceDaily

Researchers from the Technion-Israel Institute of Technology and Germany have demonstrated for the first time the phenomena of shape memory and self-healing in gold microparticles. Achieved through defects-mediated diffusion in the particle, the discovery could one day lead to development of micro- and nano-robots capable of self-repair; mechanically stable and damage-tolerant components and devices; and targeted drug delivery. The study, published in the journal Advanced Science, was conducted by doctoral student Oleg Kovalenko and Dr. Leonid Klinger, led by Prof.…

Neflix Platform Engineering — we’re just getting started

“Aren’t you done with every interesting challenge already?” I get this question in various forms a lot. During interviews. At conferences, after we present on some of our technologies and practices. At meetups and social events. You have fully migrated to the Cloud, you must be done… You created multi-regional resiliency framework, you must be done… You launched globally, you must be done… You deploy everything through Spinnaker, you must be done… You open sourced large parts of your infrastructure,…

Concrete from wood

Credit: Swiss National Science Foundation (SNSF) Houses can be made of wood, as they were in the past – or of concrete, as they are today. To build for tomorrow, the two building methods are being combined: These hybrid structures, which contain both wood and concrete elements, are becoming increasingly popular in contemporary architecture. In the context of the National Resource Programme “Resource Wood” (NRP 66), Swiss researchers have now developed an even more radical approach to combining wood and…

The Big Four of Transportation Trends

“The general press and transportation specialty publications are bursting with reports of new developments in four major disruptive transportation technologies: Shared rides Electric vehicles Autonomous vehicles Connected vehicles As we look back on the auto revolution since 1945, we have spent trillions of dollars on cars and related infrastructure. These investments transformed our country and greatly assisted us to an unprecedented level of prosperity. Yet there are many things we would no doubt do differently with 20/20 hindsight to shape…

Aquila’s successful second flight: Another step forward in bringing the world closer together | Engineering Blog | Facebook Code

Just after dawn on May 22, Facebook reached another exciting and important milestone for the Aquila program — completing the successful second full-scale test flight of the aircraft. The aircraft flew for 1 hour and 46 minutes, and landed perfectly on our prepared landing site. In order to launch right after sunrise, which was at 5:15 am, we showed up at the gate to Yuma Proving Ground in Arizona at 12:30 am. While some members of the team began to…

3-D-printed implants can improve integration of amputee prosthetic devices with bone

Credit: Mary Ann Liebert, Inc., publishers A new study evaluated two additive manufacturing methods for producing either fine or coarse textured titanium implants and compared the strength of bone integration, interlocking, and torque in rats given one or both types of the implants in the distal femurs. The ability to apply this technology to customize implant surface textures and geometries to match the specific anatomy of human amputees is increasingly important as the trend in prosthetic devices moves toward transcutaneous…

Nanoparticles improve the strength of metallic alloys

Adding nanoparticles improves the properties of superalloy components created using laser-aided additive manufacturing. Credit: A*STAR Singapore Institute of Manufacturing Technology Superalloys are the wonder materials of metallurgy. By fine-tuning their composition, scientists can increase mechanical strength and improve resistance to corrosion and high-temperature shape changes. A*STAR researchers have shown that adding nanoparticles can make these materials even stronger. Inconel 625 is a superalloy that is 55-70 per cent nickel with added chromium, molybdenum, iron, niobium-tantalum, plus trace amounts of numerous…

Why don’t my document photos rotate correctly?

Phone’s rotation tracking with a rotation sensor. Credit: KAIST John, an insurance planner, took several photos of a competitors’ new brochures. At a meeting, he opened a photo gallery to discuss the documents with his colleagues. He found, however, that the photos of the document had the wrong orientation; they had been rotated in 90 degrees clockwise. He then rotated his phone 90 degrees counterclockwise, but the document photos also rotated at the same time. After trying this several times,…

Drone Deliveries to Hospitals in Rwanda » Curious Cat Science and Engineering Blog

Drone Deliveries to Hospitals in Rwanda Posted on June 25, 2017  Comments (0) Partnering with the Government of Rwanda, Zipline serves 21 hospitals nation-wide. They provide instant deliveries of lifesaving blood products for 8 million Rwandans. Their drones are tiny airplanes (instead of the more common tiny helicopter model). Supplies are delivered using parachute drops from the drone. Landings are similar to landings on aircraft carriers (they grab a line to help slow down the drone) and, in a difference…

Getting to Know Qingbo Hu

Prior to joining LinkedIn as a full-time employee, Qingbo completed an internship with us on the Analytics Data Mining team. He has also interned with Walmart’s e-commerce unit on the SEO team. He holds a Ph.D. in computer science from the University of Illinois at Chicago.   What are some of the coolest projects that you and your team have been working on?Among all the projects my team and I have worked on, I want to highlight three of them.…