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Fabiana Bueno

• Engineering  - 
 
 NASA, the European Space Agency (ESA) and entrepreneurs aiming to jump-start human colonization of space see the 3D printing of large scale objects, including entire habitations, as a major enabling technology for the future of space exploration.
 
 Planetary Resources, a company hoping to make asteroid mining into a trillion dollar industry, earlier this year unveiled the world’s first 3D printed object made from bits of an asteroid.
3D printing, and additive manufacturing processes more generally, have made many advances in recent years. Just a few years ago, most 3D printing was only used for building prototypes, which would then go on to be manufactured via conventional processes. But it’s now increasingly being used for manufacturing in its own right.
Nearly two years ago, NASA even sent a 3D printer to the International Space Station with the goal of testing how the technology works in micro-gravity. While the printer resembles a Star Trek replicator, it’s not quite that sophisticated yet; the objects it can print are small prototypes for testing.
http://blogs.discovermagazine.com/crux/2016/05/17/the-first-moon-base-will-be-printed/
Space exploration has always been associated with grandiose plans, and it looks like 3D printing may finally bring the printed word to life.
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Antonio Banderas's profile photoRachelle Mcphail's profile photo
3 comments
 
+Antonio Banderas​ I just saw something on a science show the other day that we are going to colonize Mars , but we'll be colonizing with robots first and get it ready for a human life... They have been doing experiments with vegetation , and what would best grow in Mars... this is the hundred-year plan anyway to send robots plant food for human consumption and over the next hundred years keep continue to send and shut up stations and experiments on Mars until it's ready for human life pretty cool stuff
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ULg Reflexions

• Engineering  - 
 
The #urban questions that #architectural projects are constrained by are not only formal in nature. The colour of the chosen materials must also guarantee harmony between a new #construction and its #environment. The choice of #colours is constrained by regulations that are sometimes very strict, and yet these regulations depend on tools that are largely open to subjective assessment. It sometimes seems easy to decide which colours should be dominant in a given location, but how can colours be classified in accordance with quantified criteria? Luan Nguyen, a young architectural engineer at the University of Liege has laid the foundations for a standardized and objective method for characterizing the dominant color of a house, street, neighbourhood or city. Apart from compliance with regulations, a tool such as this one opens up a lot of possibilities for better understanding the extent of colour trends in an urban environment.

http://reflexions.ulg.ac.be/en/ColoursTowns

*NGUYN LN., TELLER J.,Color in the urban environment: A user-oriented protocol for chromatic characterization and the development of a parametric typology, Color Research and Application, 2016
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Vitaliy Kaurov

• Engineering  - 
 
Super-coordination of new robots "Boston Dynamics has just posted an incredible video showcasing a massively upgraded version of the ATLAS robot that they initially developed for the DARPA Robotics Challenge. While BD calls this the “next generation” of ATLAS, it looks like such an enormous technological leap forward that it’s more like a completely different species."

"A few quick notes:

At 5’9” (1.75 m) and 180 lbs (82 kg), the new ATLAS is much shorter and lighter than the previous model, which was 6’2” (1.9 m) and 345 lbs (156 kg). See family photo above for comparison.

It looks like BD decided that electric motors aren’t yet up to the task of getting a 180-pound robot to walk around, so they stuck with the more complicated (and generally messier) hydraulic system. Other legged robots do this too, and it seems like a reasonable compromise between the quiet efficiency of electricity and the power of hydraulics.

That dynamic balancing reminds us a lot of the early BigDog videos, but it’s crazy to see it running in a biped like this, because of the speed at which the limbs have to move while still supporting the upper body.

We’re not exactly sure how much autonomy it’s got going at this point. While walking outdoors, the LIDAR appears not to be spinning much of the time, which means someone is likely driving the robot. Some of the box lifting looks to be autonomous, but we’re definitely looking for some background on what’s going on behind the scenes when the robot is stacking boxes on those shelves.

It can fall over, and not only not die, but get up again by itself. There were a few layers of mats underneath the robot, and one video doesn’t reveal a whole lot about its overall robustness, but this is miles better than any other humanoid robot short of CHIMP (if you want to call CHIMP a humanoid)."

SOURCES:

IEEE spectrum:
http://spectrum.ieee.org/automaton/robotics/humanoids/next-generation-of-boston-dynamics-atlas-robot

WIRED:
http://www.wired.com/2016/02/boston-dynamics-new-robot-wicked-good-getting-bullied/
The latest ATLAS robot is by far the most advanced humanoid robot in existence
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Peter Edenist's profile photoVitaliy Kaurov's profile photo
5 comments
 
+Peter Edenist thanks for the reminder, I added some specs and references. 
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Gary Ray R
owner

• Engineering  - 
 
 University of Glasgow researchers make graphene production breakthrough

"Graphene has been hailed as a wonder material since it was first isolated from graphite in 2004. Graphene is just a single atom thick but it is flexible, stronger than steel, and capable of efficiently conducting heat and electricity."

"However, widespread industrial adoption of graphene has so far been limited by the expense of producing it. Affordable graphene production could lead to a wide range of new technologies reaching the market, including synthetic skin capable of providing sensory feedback to people with limb prostheses".

University Of Glasgow, Press release 
http://www.gla.ac.uk/news/headline_433699_en.html

From Materials Science 
 
”Scientists produce graphene 100 times cheaper than ever before”

Since first being synthesized by Andre Geim and Kostya Novoselov at the University of Manchester in 2004, there has been an extensive effort to exploit the extraordinary properties of graphene. However the cost of graphene in comparison to more traditional electronic materials has meant that its uptake in electronic manufacturing has been slow. Now researchers at the University of Glasgow have discovered a way to create large sheets of graphene using the same type of cheap copper used to manufacture lithium-ion batteries.  ⓐ 

To produce high-quality material scaled-up for electronics on large areas, though, graphene has proved more expensive than standard electronic substrates such as silicon.  ⓐ

A large part of this expense is the substrate on which Graphene is generally produced. By using a process of chemical vapor deposition (CVD), graphene has often been grown as a monolayer (a layer one atom thick) by exposing platinum, nickel or titanium carbide to ethylene or benzene at high temperatures. Recent production methods have lowered these costs somewhat by incorporating copper as a substrate, but even this method can still prove expensive.  ⓐ

To help drastically reduce these costs, the researchers came up with the idea of depositing high-quality graphene on the surface of inexpensive copper foils often used to make the ultra-thin cathodes (negative electrodes) in lithium-ion batteries. As it turns out, the surface of the copper proved to be both completely smooth and a superior substrate on which to form the graphene.  ⓐ



ⓐ Gizmag.com
http://www.gizmag.com/graphene-inexpensive-electronics-university-glasgow/40508/

University of Glasgow Press Release
University of Glasgow researchers make graphene production breakthrough
http://www.gla.ac.uk/news/headline_433699_en.html

Original research.  Open Access
Synthesis of Large Area Graphene for High Performance in Flexible Optoelectronic Devices
http://www.nature.com/articles/srep16744

Image (Credit: Shutterstock)
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Gary Ray R's profile photoGregor Shapiro's profile photo
5 comments
 
I would really appreciate it if "times" were used only to denote multiplication and thus "100 times" would mean a hundred fold INCREASE. If you need to express a decrease there are always the decimals, fractions, and such (0,01 1/100 one hundredth etc.).
Graphene and other sheets of just a single or a few atomic thicknesses are fascinating structures and when we get good at making just the kinds we want we will have fantastic tools to solve many problems that technology has unwittingly created!
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Vitaliy Kaurov

• Engineering  - 
 
Quantum viruses towards more efficient solar cells "Engineers at MIT and in Italy have genetically modified a virus so that it harnesses the odd behaviors of quantum physics to carry the energy from light much more efficiently than ordinary photovoltaic systems."

SOURCES:

https://youtu.be/91vhoxR1Lts

http://phys.org/news/2015-10-viruses-quantum-based-energy.html

http://www.nature.com/nmat/journal/vaop/ncurrent/full/nmat4448.html

"Nature has had billions of years to perfect photosynthesis, which directly or indirectly supports virtually all life on Earth. In that time, the process has achieved almost 100 percent efficiency in transporting the energy of sunlight from receptors to reaction centers where it can be harnessed—a performance vastly better than even the best solar cells.
One way plants achieve this efficiency is by making use of the exotic effects of quantum mechanics—effects sometimes known as "quantum weirdness." These effects, which include the ability of a particle to exist in more than one place at a time, have now been used by engineers at MIT to achieve a significant efficiency boost in a light-harvesting system.
Surprisingly, the MIT researchers achieved this new approach to solar energy not with high-tech materials or microchips—but by using genetically engineered viruses.
This achievement in coupling quantum research and genetic manipulation, described this week in the journal Nature Materials, was the work of MIT professors Angela Belcher, an expert on engineering viruses to carry out energy-related tasks, and Seth Lloyd, an expert on quantum theory and its potential applications; research associate Heechul Park; and 14 collaborators at MIT and in Italy.
Lloyd, a professor of mechanical engineering, explains that in photosynthesis, a photon hits a receptor called a chromophore, which in turn produces an exciton—a quantum particle of energy. This exciton jumps from one chromophore to another until it reaches a reaction center, where that energy is harnessed to build the molecules that support life.
But the hopping pathway is random and inefficient unless it takes advantage of quantum effects that allow it, in effect, to take multiple pathways at once and select the best ones, behaving more like a wave than a particle.
This efficient movement of excitons has one key requirement: The chromophores have to be arranged just right, with exactly the right amount of space between them. This, Lloyd explains, is known as the "Quantum Goldilocks Effect."

That's where the virus comes in. By engineering a virus that Belcher has worked with for years, the team was able to get it to bond with multiple synthetic chromophores—or, in this case, organic dyes. The researchers were then able to produce many varieties of the virus, with slightly different spacings between those synthetic chromophores, and select the ones that performed best.
In the end, they were able to more than double excitons' speed, increasing the distance they traveled before dissipating—a significant improvement in the efficiency of the process.
The project started from a chance meeting at a conference in Italy. Lloyd and Belcher, a professor of biological engineering, were reporting on different projects they had worked on, and began discussing the possibility of a project encompassing their very different expertise. Lloyd, whose work is mostly theoretical, pointed out that the viruses Belcher works with have the right length scales to potentially support quantum effects.
In 2008, Lloyd had published a paper demonstrating that photosynthetic organisms transmit light energy efficiently because of these quantum effects. When he saw Belcher's report on her work with engineered viruses, he wondered if that might provide a way to artificially induce a similar effect, in an effort to approach nature's efficiency.
"I had been talking about potential systems you could use to demonstrate this effect, and Angela said, 'We're already making those,'" Lloyd recalls. Eventually, after much analysis, "We came up with design principles to redesign how the virus is capturing light, and get it to this quantum regime."
Within two weeks, Belcher's team had created their first test version of the engineered virus. Many months of work then went into perfecting the receptors and the spacings.
Once the team engineered the viruses, they were able to use laser spectroscopy and dynamical modeling to watch the light-harvesting process in action, and to demonstrate that the new viruses were indeed making use of quantum coherence to enhance the transport of excitons.
"It was really fun," Belcher says. "A group of us who spoke different [scientific] languages worked closely together, to both make this class of organisms, and analyze the data. That's why I'm so excited by this."
While this initial result is essentially a proof of concept rather than a practical system, it points the way toward an approach that could lead to inexpensive and efficient solar cells or light-driven catalysis, the team says. So far, the engineered viruses collect and transport energy from incoming light, but do not yet harness it to produce power (as in solar cells) or molecules (as in photosynthesis). But this could be done by adding a reaction center, where such processing takes place, to the end of the virus where the excitons end up.
"This is exciting and high-quality research," says Alán Aspuru-Guzik, a professor of chemistry and chemical biology at Harvard University who was not involved in this work. The research, he says, "combines the work of a leader in theory (Lloyd) and a leader in experiment (Belcher) in a truly multidisciplinary and exciting combination that spans biology to physics to potentially, future technology."
"Access to controllable excitonic systems is a goal shared by many researchers in the field," Aspuru-Guzik adds. "This work provides fundamental understanding that can allow for the development of devices with an increased control of exciton flow."
Engineers at MIT and in Italy have genetically modified a virus so that it harnesses the odd behaviors of quantum physics to carry the energy from light much more efficiently than ordinary photovoltaic systems. <a class="youtube-link" href="https://youtu.be/91vhoxR1Lts">https://youtu.be/91vhoxR1Lts</a>
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Albenis de Jesus Andrade's profile photo
 
Excente trabajo ,la ciencia sigue avanzando gracias hombres y mujeres dedicadas al estudio de la naturaleza
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Griffith Sciences

• Engineering  - 
 
Can the saline water from the desalination process be used to generate power? According to new research harnessing the energy created from salinity gradients — for example, when freshwater meets the sea — could provide a renewable source of power able to mitigate climate change impacts, reduce reliance on fossil fuels and improve processes within the desalination industry, according to new research.
#renewableenergy   #desalination #energy #engineering

First published: http://www.sciencedirect.com/science/article/pii/S136403211500461X
Can the saline water from the desalination process be used to generate power? According to new research harnessing the energy created from salinity gradients — for example, when freshwater meets the sea — could provide ...
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Bernhard Nahrgang's profile photoSusan Bruce's profile photo
3 comments
 
All investigation are good, the post does not give any figures, though one would think that the process yields enough power to by an investment.
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Dimitris Georgoulas

• Engineering  - 
 
SABRE Engine back to life
The SABRE Engine is a hybrid air breathing rocket engine. It can function both as jet and as rocket engine. It can accelerate an aircraft up to mach 5, then turn itself to rocket engine and carry its cargo and passengers to low earth orbit. The big problem in flying up to mach 5 is the extremely high air temperatures caused by the compression of the air as it enters the engine. So the key component of the engine is a highly advanced heat exchanger that can cool the air from 1000 degrees Celsius to minus 150 in one hundredth of a second! This is what makes everything possible.

There are two main applications: Single-stage to orbit and hyper-sonic air travel (military and commercial). 

This project was initially started in Great Britain during the 1980's (HOTOL project https://en.wikipedia.org/wiki/HOTOL ) but it didn't succeed. Fortunately the instigator of the engine Mr. Alan Bond, didn't give up and finally 25 years later, the SABRE engine is closer to reality than ever. 

The engine is developed by Reaction Engines, Alan Bond's company http://www.reactionengines.co.uk/

Learn more in http://www.fromquarkstoquasars.com/skylon-plane-can-fly-anywhere-world-4-hours/ 
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Thomas Grounds

• Engineering  - 
 
A Failed Strut in the Helium Tank Possibly Caused the Recent SpaceX Rocket Explosion.  A Steel Rod that is bout 2 ft long and an inch in diameter should have handled 10,000 lbs of force, but instead failed at about 2,000 lbs of force.
Stages of a SpaceX Falcon 9 rocket being assembled. As reported by The Verge: The SpaceX explosion on June 28th was caused by a failed strut in the rocket's upper stage liquid oxygen tank, SpaceX chief executive officer Elon ...
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Thomas Grounds's profile photoScience on G+'s profile photo
5 comments
 
Those are the links we like to see included in the post. 
Thanks.
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Chemistry

• Engineering  - 
 
New multifunctional metal surface was invented. A laser-patterning technique gives opportunity to create super-hydrophobic surface that can be used in solar panels, sanitation or it can be used to collect rain water. Interesting that metal is physically changed and such properties will not disappear over time.

http://scitation.aip.org/content/aip/journal/jap/117/3/10.1063/1.4905616
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Melvin Cordovez's profile photoValerio Di Monte's profile photo
5 comments
 
Great ! Applications: clothes, ship's body, 
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Vitaliy Kaurov

• Engineering  - 
 
Super-efficient light-based computers are closer to reality thanks to Stanford engineers. Light can transmit more data while consuming far less power than electricity, and an engineering feat brings optical data transport closer to replacing wires.

SOURCE:
"Stanford breakthrough heralds super-efficient light-based computers"
http://news.stanford.edu/news/2015/may/switch-light-based-052715.html

Inverse design and demonstration of a compact and broadband on-chip wavelength demultiplexer
http://www.nature.com/nphoton/journal/v9/n6/full/nphoton.2015.69.html

Stanford electrical engineer Jelena Vuckovic wants to make computers faster and more efficient by reinventing how they send data back and forth between chips, where the work is done.

In computers today, data is pushed through wires as a stream of electrons. That takes a lot of power, which helps explain why laptops get so warm.

"Several years ago, my colleague David Miller carefully analyzed power consumption in computers, and the results were striking," said Vuckovic, referring to electrical engineering Professor David Miller. "Up to 80 percent of the microprocessor power is consumed by sending data over the wires – so-called interconnects."

In a Nature Photonics article whose lead author is Stanford graduate student Alexander Piggott, Vuckovic, a professor of electrical engineering, and her team explain a process that could revolutionize computing by making it practical to use light instead of electricity to carry data inside computers.

Proven technology
In essence, the Stanford engineers want to miniaturize the proven technology of the Internet, which moves data by beaming photons of light through fiber optic threads.

"Optical transport uses far less energy than sending electrons through wires," Piggott said.  "For chip-scale links, light can carry more than 20 times as much data."

Theoretically, this is doable because silicon is transparent to infrared light - the way glass is transparent to visible light. So wires could be replaced by optical interconnects: silicon structures designed to carry infrared light.

But so far, engineers have had to design optical interconnects one at a time. Given that thousands of such linkages are needed for each electronic system, optical data transport has remained impractical.

Now the Stanford engineers believe they've broken that bottleneck by inventing what they call an inverse design algorithm.

It works as the name suggests: the engineers specify what they want the optical circuit to do, and the software provides the details of how to fabricate a silicon structure to perform the task.

"We used the algorithm to design a working optical circuit and made several copies in our lab," Vuckovic said.

In addition to Piggott, the research team included former graduate student Jesse Lu (now at Google), graduate student Jan Petykiewicz and postdoctoral scholars Thomas Babinec and Konstantinos Lagoudakis. As they reported in Nature Photonics, the devices functioned flawlessly despite tiny imperfections.

"Our manufacturing processes are not nearly as precise as those at commercial fabrication plants," Piggott said. "The fact that we could build devices this robust on our equipment tells us that this technology will be easy to mass-produce at state-of-the-art facilities."

The researchers envision many other potential applications for their inverse design algorithm, including high bandwidth optical communications, compact microscopy systems and ultra-secure quantum communications.

Light and silicon
The Stanford work relies on the well-known fact that infrared light will pass through silicon the way sunlight shines through glass.

And just as a prism bends visible light to reveal the rainbow, different silicon structures can bend infrared light in useful ways.

The Stanford algorithm designs silicon structures so slender that more than 20 of them could sit side-by-side inside the diameter of a human hair. These silicon interconnects can direct a specific frequency of infrared light to a specific location to replace a wire.

By loading data onto these frequencies, the Stanford algorithm can create switches or conduits or whatever else is required for the task.

The inverse design algorithm is what makes optical interconnects practical by describing how to create what amount to silicon prisms to bend infrared light.

Once the algorithm has calculated the proper shape for the task, engineers can use standard industrial processes to transfer that pattern onto a slice of silicon.

"Our structures look like Swiss cheese but they work better than anything we've seen before," Vuckovic said.

She and Piggott have made several different types of optical interconnects and they see no limits on what their inverse design algorithm can do.

In their Nature Photonics paper, the Stanford authors note that the automation of large-scale circuit design enabled engineers to create today's sophisticated electronics.

By automating the process of designing optical interconnects, they feel that they have set the stage for the next generation of even faster and far more energy-efficient computers that use light rather than electricity for internal data transport.
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Matt Lew's profile photoJohann Dirry's profile photo
9 comments
 
+Matt Lew sure. really like it that some people even built a functioning computer in Minecraft:
https://youtu.be/wgJfVRhotlQ
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Fabiana Bueno

• Engineering  - 
 
 The device amplifies signals, which are called neural action potentials and produced by the neurons in the anterior of the brain. An algorithm separates these signals, recorded as brain spike activity, from noise and other artifacts. With each spike detected, the microchip sends a pulse of electric current to stimulate neurons in the posterior part of the brain, artificially connecting the two brain regions.
 
 
 Bioengineering News:
Ultimately, the team hopes to develop a device that rapidly and substantially improves function after brain injury in humans. There is no such commercial treatment for the 1.5 million Americans, including soldiers in Afghanistan and Iraq, who suffer traumatic brain injuries (TBI), or the nearly 800,000 stroke victims who suffer weakness or paralysis in the United States, annually.
The prosthesis, called a brain-machine-brain interface, is a closed-loop microelectronic system. It records signals from one part of the brain, processes them in real time, and then bridges the injury by stimulating a second part of the brain that had lost connectivity.
(...)The device amplifies signals, which are called neural action potentials and produced by the neurons in the anterior of the brain. An algorithm separates these signals, recorded as brain spike activity, from noise and other artifacts. With each spike detected, the microchip sends a pulse of electric current to stimulate neurons in the posterior part of the brain, artificially connecting the two brain regions.
https://bioengineer.org/neural-prosthesis-restores-behavior-brain-injury/
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Rachelle Mcphail's profile photo
 
Amazing.....
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Fabiana Bueno

• Engineering  - 
 
 ​Researchers create a polymer that can stretch to 100 times its original length — and even repair itself if punctured.
 
 Artificial muscles currently have applications in some consumer technology and robotics, but they have shortcomings compared to a real bicep, Bao said. Small holes or defects in the materials currently used to make artificial muscle can rob them of their resilience. Nor are they able to self-repair if punctured or scratched.
But this new material, in addition to being extraordinarily stretchy, has remarkable self-healing characteristics. Damaged polymers typically require a solvent or heat treatment to restore their properties, but the new material showed a remarkable ability to heal itself at room temperature, even if the damaged pieces are aged for days. Indeed, researchers found that it could self-repair at temperatures as low as negative 4 degrees Fahrenheit (-20 C), or about as cold as a commercial walk-in freezer.
The team attributes the extreme stretching and self-healing ability of their new material to some critical improvements to a type of chemical bonding process known as crosslinking. This process, which involves connecting linear chains of linked molecules in a sort of fishnet pattern, has previously yielded a tenfold stretch in polymers.
First they designed special organic molecules to attach to the short polymer strands in their crosslink to create a series of structure called ligands. These ligands joined together to form longer polymer chains – spring-like coils with inherent stretchiness
http://engineering.stanford.edu/news/super-stretchy-self-healing-material-could-lead-artificial-muscle
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Tes Clean Air Systems

• Engineering  - 
 
Moore's law is coming to an end in a literal sense, because the exponential growth in #transistor count cannot continue. But from the consumer perspective, “Moore's law simply states that user value doubles every two years”. And in that form, the law will continue as long as the industry can keep stuffing its devices with new functionality. #MooresLaw  #semiconductors
The semiconductor industry will soon abandon its pursuit of Moore's law. Now things could get a lot more interesting.
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Jack Martinelli's profile photoTrue antitheist2006's profile photo
2 comments
 
This is where quantum computing comes to save the day.
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Marc Razia

• Engineering  - 
 
This is something I hadn't considered. Is it possible the solution to our Environmental Problems could actually be removing carbon instead of decreasing its output?

It would seem even the possibility of this should be very exciting news.
 
This is something I hadn't considered. Is it possible the solution to our Environmental Problems could actually be removing carbon instead of decreasing its output?

It would seem even the possibility of this should be very exciting news.
For decades, most of the strategizing about how to slow down climate change has focused on cutting emissions of carbon dioxide and other greenhouse gases, mainly by shifting away from fossil fuels. Other proposals range from reducing meat consumption (cattle belch massive quantities of methane, a potent greenhouse gas) to curtailment of chlorofluorocarbons (compounds that both retain heat and destroy atmospheric ozone) in refrigerants and aerosol...
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Douglas Tiffany's profile photoFrançois Kneider's profile photo
4 comments
 
Whatever heater design; one can get over than 30% of electricity, by adding ; Combustible Saver Device for Thermal Power Plant , previously on cooling towers
< http://kneideren.blogspot.fr/

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Bill Carter
owner

• Engineering  - 
 
Micro-lattice materials

A bit of pop-sci from my laboratory! My group developed a fun technology for fabricating micro-scale lattice structures that can be used in lightweight vehicle applications for primary (load bearing) and secondary (aero- or body-surfaces) structure. This video shows one of my fantastic colleagues illustrating her work for Boeing in the application of microlattice materials to aircraft.  These materials are extremely versatile: Starting from a polymer template, they can be formed in a wide range of architectures and base materials from unprecedented low density and surprisingly high mechanical recovery to structural alternatives to honeycomb and foams. The basic concept enables high performance thin films (metals, ceramics and polymers) to form lattices by coating a polymer micro-lattice template followed by subsequent removal of the polymer template. The starting polymer micro-lattice templates are created using an array of interpenetrating self-forming photopolymer waveguides from a single exposure mask.  The process is fast (~10-60 second exposure), highly scalable to large sizes (m2), and enables precise and independent control over micro-lattice architecture at all levels of structural hierarchy (~100nm up to ~10cm). This technique is inherently scalable to low-cost high-throughput manufacturing and allows the design and fabrication of a wide range of lattice materials including metals, polymers and ceramics.

https://en.wikipedia.org/wiki/Metallic_microlattice
 
My colleague +Sophia Yang is featured by Boeing for her awesome work on +HRL Laboratories, LLC microlattices in my group. Nice job Sophia! 
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Cliff Bramlett's profile photoBill Carter's profile photo
12 comments
 
Good question - These materials won't replace carbon fiber composites. Rather they would be used in combination with composites - e.g. to make sandwich structures.
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Dattatreya Mandal

• Engineering  - 
 
Scientists, at New Mexico-based Los Alamos National Laboratory (LANL), have developed the technology that could potentially turn any window into a power source. For the very first time, researchers have managed to build large-scale luminescent solar concentrators (LSCs) that, unlike their predecessors, are colorless, non-toxic and incredibly efficient. A type of building-integrated photovoltaic material, the device uses colloidal quantum dots (basically, semiconductor nanocrystals) for the concentration and absorption of incident solar radiation.

source: http://www.lanl.gov/discover/news-release-archive/2015/August/08.24-capture-sunlight-with-window.php

abstract: http://www.nature.com/nnano/journal/vaop/ncurrent/full/nnano.2015.178.html
Scientists have developed colorless and non-toxic luminescent solar concentrators that could turn any window into a power source.
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SJ W's profile photonunnieakajoeanna smith's profile photo
8 comments
 
U know what really grind my gears lol,lol, When those amazing things r developed only people who can afford them can get them cause things lik that r exspensive it makes me sad 
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American Scientist

• Engineering  - 
 
 
Space suits enable human exploration outside of Earth’s atmosphere. As humankind reached beyond the confines of the Earth, space suits protected the men and women who were laying their lives on the line and represented the human element in space exploration.

The creation of an effective space suit begins with an understanding of the environments in which the suit will be used and the capabilities the suit will need. This information is used to develop a set of requirements that guide engineers and technicians in the selection of materials, design of components, test protocols, and overall configuration of the space suit system.

Here, David P. Cadogan, the director of engineering at +ILC Dover, which is the only U.S. company that builds space suits, discusses the history of the space walk, what design criteria goes into a suit, and how to balance the conflicting goals of dexterity and safety. He also looks at how future space suits are becoming less bulky and more flexible.: bit.ly/1gxjcBE* 

In the photo: The experimental I-suit began development around 2000 and was designed to perform better on planetary surfaces. Improved mobility would make it easier to walk in environments with gravity and to use robotic rovers.
Image courtesy of ILC Dover.

*Only accessible to active Sigma Xi member or American Scientist subscribers. Find out how to get access: bit.ly/1IWY6mE

#space   #spacecraft   #spaceexploration   #spacesuit   #astronomy   #astronauts   #science   #engineering   #research   #technology   #sciencenews   #history   #sciencefashion   #scienceeveryday
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Brandon Graham's profile photoAmerican Scientist's profile photo
3 comments
 
+Brandon Graham Thanks for your interest! Out of curiosity, what about this post/article interested you? 
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Scientific Lens

• Engineering  - 
 
Could Owls Help Make Aircraft Propellers Quieter ?

The University of Cambridge researchers who examined owl feathers found that feathers were made up of microscopic coverings and a porous elastic fringe on the trailing edge that scatters sound without having adverse impacts on aerodynamics.

They copied the structure on 3D-printed plastic and tested it on a wind turbine in a wind tunnel. The researchers were able to register significantly reduced noise levels. They believe it could be applied to aircraft propellers or even computer fans to muffle noise.

+ Enjoy reading this article here  -  http://goo.gl/LqCSFr
+ An audio interview with Prof Nigel Peake, University of Cambridge here  - http://goo.gl/gUsnFg




#aircraft #propeller #quiet #owl #feather #sound #aerodynamics #noise #science #discovery #engineering
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Gary Ray R's profile photoScientific Lens's profile photo
4 comments
 
Very useful research indeed !
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