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3D Printer That Could Build a Home in 24 Hours Wins Global Design Competition

New York, NY – Contour Crafting, a computerized construction method that rapidly 3D prints large-scale structures directly from architectural CAD models, has been awarded the grand prize of $20,000 in the 2014 "Create the Future" Design Contest. Contour Crafting automates the construction of whole structures and radically reduces the time and cost of construction. The large-scale 3D printing technology is revolutionary to the construction industry and could lead to affordable building of high-quality, low-income housing; the rapid construction of emergency shelters; and on-demand housing in response to disasters. NASA is looking at the technology for building moon and Mars bases. Behrokh Khoshnevis, a professor at University of Southern California, who invented Contour Crafting, views this invention as a proven concept. “Bringing 3D printing to construction is bringing a concept to a proven application. For many years, building has been done in layers – concrete foundation blocks, brick laying, structural framing, etc.” “I am very happy to receive this award and find it to be very timely as I am in the process of fund raising and I think this recognition will help me greatly in furthering the project,” said Khoshnevis. Contour Crafting was among the 1,074 new product ideas submitted in the 12th annual design contest, which was established in 2002 to recognize and reward engineering innovations that benefit humanity, the environment, and the economy. This year’s design contest was co-sponsored by COMSOL (www.comsol.com) and Mouser Electronics (www.mouser.com). Analog Devices and Intel were supporting sponsors. In addition to the grand prize of $20,000, first-place winners (of Hewlett-Packard workstations) were named in seven categories: *Aerospace & Defense: The Polariton Interferometer - a Novel Inertial Navigation System Frederick Moxley A stealth navigation system that provides precise course-plotting while operating independently from GPS. *Automotive/Transportation: Continuously Variable Displacement Engine Steve Arnold A continuously variable stroke engine that operates at 30% better fuel efficiency than conventional thick stroke engine designs. *Consumer Products: NanoFab Lab...in a Box! Jonathan Moritz (Team Leader) An educational kit that brings nanomanufacturing out of the cleanroom and into the classroom. *Electronics: A Paradigm Shift for SMT Electronics Jim Hester (Team Leader) Micro-coil springs that provide flexible electrical interconnections for integrated circuit packages, preventing connection breaks due to heat and vibration. *Machinery/Automation/Robotics  – sponsored by Maplesoft: Automatic Eye Finder & Tracking System Rikki Razdan (Team Leader) Real-time point-of-gaze eye tracking system that allows users to control computer input through "Look and Click" applications.  *Medical: HemeChip for Early Diagnosis of Sickle Cell Disease Yunus Alapan (Team Leader) A biochip that can rapidly, easily, and conclusively identify the hemoglobin type in blood to diagnose Sickle Cell Disease in newborns. *Sustainable Technologies: Ecovent Systems - Making Every Room the Right Temperature Dipul Patel (Team Leader) A system of wireless vents and sensors that makes any forced air heating and cooling system smarter by directing conditioned air where it’s needed most. Finalists were selected by senior editors at Tech Briefs Media Group and judged by an independent panel of design engineers. Visitors to the contest Web site could vote on entries, with the 10 most popular designs awarded a Sphero mobile game system by Orbotix. For more information, visit www.createthefuturecontest.com.          

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'Cloaking' Device Uses Ordinary Lenses to Hide Objects

Inspired perhaps by Harry Potter’s invisibility cloak, scientists have recently developed several ways to hide objects from view. The latest effort, developed at the University of Rochester, not only overcomes some of the limitations of previous devices, but also uses inexpensive, readily available materials in a novel configuration.Forgoing specialized components, John Howell, a professor of physics at the University of Rochester, and graduate student Joseph Choi developed a combination of four standard lenses that keeps the object hidden as the viewer moves up to several degrees away from the optimal viewing position.“This is the first device that we know of that can do three-dimensional, continuously multidirectional cloaking, which works for transmitting rays in the visible spectrum,” said Choi, a PhD student at Rochester’s Institute of Optics.While their device is not quite like Harry Potter’s invisibility cloak, Howell had some thoughts about potential applications, including using cloaking to effectively let a surgeon “look through his hands to what he is actually operating on." The same principles could be applied to a truck to allow drivers to see through blind spots on their vehicles. SourceAlso: Learn about ELID Grinding of Large Aspheres.

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Robotic Fabric Moves and Contracts

Researchers are developing a robotic, sensor-embedded fabric that moves and contracts. Such an elastic technology could enable a new class of soft robots, stretchable garments, "g-suits" for pilots or astronauts to counteract acceleration effects, and lightweight, versatile robots to roam alien landscapes during space missions.The robotic fabric is a cotton material containing sensors made of a flexible polymer and threadlike strands of a shape-memory alloy. The strands return to a coiled shape when heated, causing the fabric to move."We have integrated both actuation and sensing, whereas most robotic fabrics currently in development feature only sensing or other electronic components that utilize conductive thread," said Rebecca Kramer, an assistant professor of mechanical engineering at Purdue University. "We also use standard sewing techniques to introduce the thread-like actuators and sensors into the fabric, so they could conceivably be integrated into the existing textile manufacturing infrastructure."SourceAlso: See other Sensors tech briefs.

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International Space Station Test Analyzes Rotation of Objects in Space

Objects in space tend to spin in a way that's totally different from the way they spin on Earth. Understanding how objects are spinning, where their centers of mass are, and how their mass is distributed is crucial to any space mission. MIT researchers developed a new algorithm for gauging the rotation of objects in zero gravity using only visual information. They tested the algorithm aboard the International Space Station.

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Motion Analysis Detects Joint Degeneration

If joints do no longer work as usual, humans tend to compensate this by unconsciously adapting their motions. In the case of knee arthrosis, or excessive joint wear, they shift the weight to the healthy leg. This relieves the worn knee joint, but also delays the pain that would indicate the start of arthrosis. Based on a computer-supported gait analysis, researchers are developing an early warning system for routine prevention.

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3D Printer Heads to International Space Station

The first 3D printer is soon to fly into Earth orbit, finding a home aboard the International Space Station (ISS). The size of a small microwave, the unit is called Portal. The hardware serves as a testbed for evaluating how well 3D printing and the microgravity of space combine. The soon-to-fly 3D printer can churn out plastic objects within a span of 15 minutes to an hour.The technology works by extruding heated plastic, and then builds successive layers to make a three-dimensional object. In essence, the test on the ISS might well lead to establishing a “machine shop” in space. The 3D printer experiment is being done under the tech directorate's Game Changing Development Program, a NASA thrust that seeks to identify and rapidly mature innovative/high impact capabilities and technologies for infusion in a broad array of future NASA missions.According to the team, manufacturing assets in space, as opposed to launching them from Earth, will accelerate and broaden space development while providing unprecedented access for people on Earth to use in-space capabilities. SourceAlso: Learn about Ammonia Leak Detection on the ISS.

Posted in: Manufacturing & Prototyping, Rapid Prototyping & Tooling, Materials, Plastics, Test & Measurement, Aerospace, News

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Researchers Equip Robot with Novel Tactile Sensor

Researchers at MIT and Northeastern University have equipped a robot with a novel tactile sensor that lets it grasp a USB cable draped freely over a hook and insert it into a USB port.The sensor is an adaptation of a technology called GelSight, which was developed by the lab of Edward Adelson, the John and Dorothy Wilson Professor of Vision Science at MIT, and first described in 2009. The new sensor isn’t as sensitive as the original GelSight sensor, which could resolve details on the micrometer scale. But it’s smaller — small enough to fit on a robot’s gripper — and its processing algorithm is faster, so it can give the robot feedback in real time.A GelSight sensor — both the original and the new, robot-mounted version — consists of a slab of transparent, synthetic rubber coated on one side with a metallic paint. The rubber conforms to any object it’s pressed against, and the metallic paint evens out the light-reflective properties of diverse materials, making it much easier to make precise optical measurements.In the new device, the gel is mounted in a cubic plastic housing, with just the paint-covered face exposed. The four walls of the cube adjacent to the sensor face are translucent, and each conducts a different color of light — red, green, blue, or white — emitted by light-emitting diodes at the opposite end of the cube. When the gel is deformed, light bounces off of the metallic paint and is captured by a camera mounted on the same cube face as the diodes.From the different intensities of the different-colored light, the algorithms developed by Adelson’s team can infer the three-dimensional structure of ridges or depressions of the surface against which the sensor is pressed. Source Read other Sensors tech briefs.

Posted in: Photonics, Optics, Materials, Motion Control, Sensors, Lighting, LEDs, Machinery & Automation, Robotics, News

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