Ever since single-layer graphene burst onto the science scene in 2004, the possibilities for the promising material have seemed nearly endless. With its high electrical conductivity, ability to store energy, and ultra-strong and lightweight structure, graphene has potential for many applications in electronics, energy, the environment and even medicine.
The drop-on-demand inkjet printing is a promising approach allowing patterning of materials with...
Inside NASA's giant thermal vacuum chamber, called Chamber A, at NASA's Johnson Space Center in...
Additive manufacturing has been called a game changer. But new games require new instructions, and the manuals for a growing assortment of methods for building parts and products layer-by-layer, collectively known as "3D printing", still are works in progress. Manufacturing researchers at NIST have scoped out the missing sections in current guidelines for powder bed fusion, the chief method for "printing" metal parts.
New research shows how inkjet-printing technology can be used to mass-produce electronic circuits made of liquid-metal alloys for "soft robots" and flexible electronics. Elastic technologies could make possible a new class of pliable robots and stretchable garments that people might wear to interact with computers or for therapeutic purposes.
Imagine you need to have an almost exact copy of an object. Now imagine that you can just pull your smartphone out of your pocket, take a snapshot with its integrated 3-D imager, send it to your 3-D printer and, within minutes, you have reproduced a replica accurate to within microns of the original object. This feat may soon be possible because of a new, tiny high-resolution 3-D imager developed at Caltech.
Computer chips, solar cells and other electronic devices have traditionally been based on silicon, the most famous of the semiconductors, that special class of materials whose unique electronic properties can be manipulated to turn electricity on and off the way faucets control the flow of water. There are other semiconductors. Gallium arsenide is one such material and it has certain technical advantages over silicon.
A 3D printing technology developed by Silicon Valley startup, Carbon3D Inc., enables objects to rise from a liquid media continuously rather than being built layer-by-layer as they have been for the past 25 years, representing a fundamentally new approach to 3D printing. The technology allows ready-to-use products to be made 25 to 100 times faster than other methods.
Engineers at Oregon State Univ. have used additive manufacturing to create an improved type of glucose sensor for patients with Type 1diabetes, part of a system that should work better, cost less and be more comfortable for the patient. A key advance is use of electrohydrodynamic jet, or “e-jet” printing, to make the sensor.
The 3-D printing scene, a growing favorite of do-it-yourselfers, has spread to the study of plasma physics. With a series of experiments, researchers at the Princeton Plasma Physics Laboratory have found that 3-D printers can be an important tool in laboratory environments.
The already unclear lines separating research from development are getting even blurrier as more companies allocate some part of their R&D budget to take on riskier projects, and invest in the necessary infrastructure to manage these riskier activities. New products are now being launched out of recently formed "Innovation" organizations", and more are coming from existing “Advanced Development" organizations.
In 2013, battle lines were drawn. Two stark competitors were looking to speed repairs and cut costs on parts for gas turbines. First to the drawing board was GE, who started using 3-D printing technology at its Global Research Center in Niskayuna, N.Y., to produce more than 85,000 fuel nozzles for its anticipated LEAP engine technology.
Imagine printing out molecules that can respond to their surroundings. A research project at the Univ. of Washington merges custom chemistry and 3D printing. Scientists created a bone-shaped plastic tab that turns purple under stretching, offering an easy way to record the force on an object.
A team of New York Univ. physicists has developed a method to monitor the properties of microscopic particles as they grow within a chemical reaction vessel, creating new opportunities to improve the quality and consistency of a wide range of industrial and consumer products. Their work, which appears in Soft Matter, offers benefits for commodities ranging from food and pharmaceuticals to perfumes and cosmetics.
The editors of R&D Magazine are looking for speakers to participate in a webinar on “Using Multiple Materials in 3D Printing.” Candidates are asked to give a 15-min PowerPoint-based talk over the phone on their experiences in fabricating 3D printed products using multiple materials or developing the processes and/or technologies to accomplish this.
DNA molecules provide the "source code" for life in humans, plants, animals and some microbes. But now researchers report an initial study showing that the strands can also act as a glue to hold together 3-D-printed materials that could someday be used to grow tissues and organs in the laboratory.
In all manufacturing processes there are limits to the surface topographies that can be produced. These limits can be represented in part by crossover scales. Understanding these scales is important for selecting process variables in additive manufacturing (AM). This study evaluated the measured topographies on surfaces made by an AM process for polymers.
Scientists at Univ. College London, in collaboration with groups at the Univ. of Bath and the Daresbury Laboratory, have uncovered the mystery of why blue light-emitting diodes (LEDs) are so difficult to make, by revealing the complex properties of their main component—gallium nitride—using sophisticated computer simulations.
Just in time for Christmas, Simon Fraser Univ. computing science professor Richard Zhang reveals how to print a 3-D Christmas tree efficiently and with zero material waste, using the world’s first algorithm for automatically decomposing a 3-D object into what are called pyramidal parts. A pyramidal part has a flat base with the remainder of the shape forming upwards over the base with no overhangs, much like a pyramid.
Pretty soon, powering your tablet could be as simple as wrapping it in cling wrap. A Univ. of Toronto team has invented a new way to spray solar cells onto flexible surfaces using miniscule light-sensitive materials known as colloidal quantum dots (CQDs)—a major step toward making spray-on solar cells easy and cheap to manufacture.
Researchers at Yale Univ. have joined forces with a leading 3-D biology company, Organovo, to develop 3-D printed tissues for transplant research. As the number of donors for vital tissue and organ transplants decreases worldwide and the demand for transplants increases, 3-D bioprinting technology offers a solution to a long-standing and growing problem.
Purdue Univ. announced that GE Global Research will invest up to $10 million in a five-year partnership focused on R&D in advanced manufacturing. The GE/Purdue Partnership in Research and Innovation in Advanced Manufacturing will push a new era in manufacturing, promoting technologies that enable the digitization, decentralization and democratization of manufacturing to lower cost, improve speed and drive innovation.
An ultra-stable, ultra-thin bonding technology has been adapted by researchers for use as a super-strong vacuum seal. Though it is less than 100 nm thick, the bond can withstand pressure up to 2 megapascals, and its drift, or how much it shifts over time, is on the order of less than 3 trillionths of a meter per hour.
The first 3-D printer in space has popped out its first creation. The 3-D printer delivered to the International Space Station two months ago made a sample part for itself this week. It churned out a faceplate for the print head casing.
Additive manufacturing, widely known as 3-D printing, offers many advantages over traditional manufacturing methods such as injection molding and machining, which limit a part’s geometry and size. By freeing manufacturers from these design constraints, additive manufacturing helps create complex parts that spark innovation and save companies time and money.
When an aspiring mechanical engineer on a budget wants a top-of-the-line guitar, what does he do? He makes it himself, of course. At age 13, Nathan Spielberg—now a Massachusetts Institute of Technology senior—began building his first guitar, a process that consumed his attention for eight hours a day, every weekend, for 3 1/2 years.
New software algorithms have been shown to significantly reduce the time and material needed to produce objects with 3-D printers. Because the printers create objects layer-by-layer from the bottom up, this poses a challenge when printing overhanging or protruding features like a figure's outstretched arms. They must be formed using supporting structures—which are later removed—adding time and material to the process.
In a design that mimics a hard-to-duplicate texture of starfish shells, Univ. of Michigan engineers have made rounded crystals that have no facets. The team calls the crystals "nanolobes". The nanolobes' shape and the way they're made have promising applications. The geometry could potentially be useful to guide light in advanced LEDs, solar cells and non-reflective surfaces.
- Page 1