Researchers have discussed the merits of surface-stress influence on mechanical properties for decades. Now, a new research platform, called nanomechanical Raman spectroscopy and developed at Purdue Univ., uses a laser to measure the "nanomechanical" properties of tiny structures undergoing stress and heating.
A group of computer scientists from Brown Univ. were at the Johnson Space Center in Houston for...
Many common materials exhibit different and...
Life cycle engineering connects the engineers who...
Scientists in The Netherlands have demonstrated that they can detect extremely small changes in position and forces on very small drums of graphene. Graphene drums have great potential to be used as sensors in devices such as mobile phones. Using their unique mechanical properties, these drums could also act as memory chips in a quantum computer.
Polymers come with a range of properties dictated by their chemical composition and geometrical arrangement. Yasuyuki Tezuka and his team at Tokyo Institute of Technology have now applied an approach to synthesize a new type of multicyclic polymer geometry. While mathematicians are interested because these structures have not been realized before, the geometry studies also provide insights for chemists.
Bridges become an infrastructure problem as they get older, as de-icing salt and carbon dioxide gradually destroy the reinforced concrete. A new robot called C2D2 (Climbing Corrosion Detecting Device) is now in use in Switzerland and can check the condition of these structures, even in places that people cannot reach.
Princeton Univ. researchers have developed a way to use a laser to measure people's blood sugar, and, with more work to shrink the laser system to a portable size, the technique could allow diabetics to check their condition without pricking themselves to draw blood.
A team of researchers at Louisiana Tech Univ. has developed an innovative method for using affordable, consumer-grade 3-D printers and materials to fabricate custom medical implants that can contain antibacterial and chemotherapeutic compounds for targeted drug delivery.
It’s official. Yale Univ. physicists have chilled the world’s coolest molecules. The tiny titans in question are bits of strontium monofluoride, dropped to 2.5 thousandths of a degree above absolute zero through a laser cooling and isolating process called magneto-optical trapping. They are the coldest molecules ever achieved through direct cooling, and they represent a physics milestone.
Printing whole new organs for transplants sounds like something out of a sci-fi movie, but the real-life budding technology could one day make actual kidneys, livers, hearts and other organs for patients who desperately need them. In Langmuir, scientists are reporting new understanding about the dynamics of 3-D bioprinting that takes them a step closer to realizing their goal of making working tissues and organs on-demand.
In the near future, the package that you ordered online may be deposited at your doorstep by a drone: Last December, online retailer Amazon announced plans to explore drone-based delivery, suggesting that fleets of flying robots might serve as autonomous messengers that shuttle packages to customers within 30 mins of an order.
North Carolina State Univ. researchers have developed methods for electronically manipulating the flight muscles of moths and for monitoring the electrical signals moths use to control those muscles. The work opens the door to the development of remotely-controlled moths, or “biobots,” for use in emergency response.
Materials like solid gels and porous foams are used for padding and cushioning, but each has its own advantages and limitations. To overcome limitations, a team from Lawrence Livermore National Laboratory has found a way to design and fabricate, at the microscale, new cushioning materials with a broad range of programmable properties and behaviors that exceed the limitations of the material's composition through 3-D printing.
By zapping the air with a pair of powerful laser bursts, researchers at the Univ. of Arizona have created highly focused pathways that can channel electricity through the atmosphere. The new technique can potentially direct an electrical discharge up to 10 m away or more, shattering previous distance records for transmitting electricity through air. It also raises the intriguing possibility of one day channeling lightning with laser power.
In May 2014, a private company in China, WinSun, printed 10 full-size houses using 3-D printers in the space of a day. The process utilized quick-drying cement and construction water to build the walls layer-by-layer. The company used a system of four 10-m-by-6.6-m-high printers with multi-directional sprays to create the houses.
Researchers in Europe have succeeded for the first time in growing single-walled carbon nanotubes with only a single, prespecified structure. The nanotubes thereby have identical electronic properties. The decisive trick was producing the carbon nanotube from custom-made organic precursor molecules.
A team of materials chemists, polymer scientists, device physicists and others at the Univ. of Massachusetts Amherst report a breakthrough technique for controlling molecular assembly of nanoparticles over multiple length scales that should allow faster, cheaper, more ecologically friendly manufacture of organic photovoltaics and other electronic devices.
Imagine your religious beliefs lied between you and your life. This is what happened in mid-April to Julie Penoyer, a 50-year-old U.K. heart patient and Jahovah’s Witness. Following her religious beliefs, her request when undergoing open-heart surgery was to not receive donated blood products.
Using a relatively straightforward technique, a team of NIST researchers has created what may be the most highly enriched silicon currently being produced. The material is more than 99.9999% pure silicon-28, with less than 1 part per million (ppm) of the problematic isotope silicon-29. Many quantum computing schemes require isotopically pure silicon, for example to act as a substrate for qubits.
Univ. College London scientists have discovered a new method to efficiently generate and control currents based on the magnetic nature of electrons in semiconducting materials, offering a new way to develop a new generation of electronic devices. One promising approach to developing new technologies is to exploit the electron’s tiny magnetic moment, or spin.
These days, unmanned aerial vehicles (UAV) typically fly alone with a team of ground operators controlling their activities through teleoperation or waypoint-based routing. But one aircraft can only carry so many sensors, limiting its capabilities. That’s one reason why a fleet of autonomous aircraft can be better than one flying alone.
Borrowing from the ancient Japanese art of origami, children's toys and even a touch of the "Transformers" movies, scientists and engineers at Harvard University and the Massachusetts Institute of Technology have created self-assembling, paper robots. These complex machines transform themselves from little more than a sheet of paper and plastic into walking automatons.
For the first time, researchers have succeeded in "growing" single-wall carbon nanotubes (CNT) with a single predefined structure, and hence with identical electronic properties. The method involved self-assembly of tailor-made organic precursor molecules on a platinum surface. In the future, carbon nanotubes of this kind may be used in ultra-sensitive light detectors and ultra-small transistors.
The Facilities 450mm Consortium (F450C), a partnership of leading nanoelectronics facility companies guiding the effort to design and build the next-generation 450mm computer chip fabrication facilities, has announced it has again increased in size, naming Pfeiffer Vacuum as the twelfth member company to join the consortium.
MIT engineers have fabricated a new elastic material coated with microscopic, hairlike structures that tilt in response to a magnetic field. Depending on the field’s orientation, the microhairs can tilt to form a path through which fluid can flow; the material can even direct water upward, against gravity. Researchers say structures may be used in windows to wick away moisture.
Traditional lithography is based on a simple principle: Oil and water don’t mix. The method, first developed by an actor in Bavaria in 1796, used a smooth piece of limestone on which an oil-based image was drawn and overlayed with gum arabic in water. During printing, the ink was attracted to the oil, and was repelled by the gum.
The global 3-D scanning market is estimated to grow from $2.06 billion in 2013 to $4.08 billion by 2018, at a CAGR of 14.6% from 2013 to 2018, according to a MarketsandMarkets report. Recent trends in the industry show 3-D scanning as improving, with a huge demand. And 3-D scanning with services like reverse engineering, rapid prototyping and quality inspection, makes it suitable for most verticals.
Most MEMS are made primarily of silicon for reasons of convenience, but they wear out quickly due to friction and they are not biocompatible. Researchers at Argonne National Laboratory and a handful of other institutions around the world have directed their focus on ultrananocrystalline diamond (UNCD), which are smooth and wear-resistant diamond thin films. Recent work opens the door to using diamond for fabricating advanced MEMS devices.
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