Adherent cells, the kind that form the architecture of all multicellular organisms, are engineered with precise forces that allow them to move around and stick to things. When these cells are put into a petri dish with a variety of substrates they can sense the differences in the surfaces and they will “crawl” toward the stiffest one. Chemists have devised a method using DNA-based tension probes to measure and map these phenomena.
Researchers at Virginia Commonwealth Univ. have discovered that most of the electrolytes used in...
Traditional forms of temperature measurement, such as thermocouples and spot pyrometers, often...
Houston Methodist Research Institute scientists will receive about $1.25 million from the Center for the Advancement of Science in Space to develop an implantable, nanochannel device that delivers therapeutic drugs at a rate guided by remote control. The device's effectiveness will be tested aboard the International Space Station and on Earth's surface.
In many areas of the developing world, there’s limited access to electricity, and many places have never had any type of power infrastructure. This presents a challenge for aid workers and doctors. In the recent past, vaccines that needed to be stored at cold, relatively constant temperatures couldn’t be taken into the remote areas where they were needed most.
Researchers in the U.K. have found a new way to make nanostructured carbon using the waste product sawdust. By cooking sawdust with a thin coating of iron at 700 C, they have discovered that they can create carbon with a structure made up of many tiny tubes. These tubes are one thousand times smaller than an average human hair.
Helium is a famously unreactive gas but when cooled to just above absolute zero it becomes a superfluid, a strange form of liquid. An Anglo-Austrian team has used this liquid to develop a completely new way of forming charged particles. The team’s key discovery is that helium atoms can acquire an excess negative charge which enables them to become aggressive new chemical reagents.
Certain quantum physical phenomena in matter can only be clearly visualized in the presence of extreme magnetic fields. Physicists in Germany are developing a new high field magnet based on a hybrid design conceived in the U.S. On Oct. 16, 2014, scientists with the High Field Magnet project reported consistent magnetic fields of 26 T, higher than 25-T goal originally conceived.
A Silicon Valley startup has developed technology to let dispatchers know when a police officer's weapon has been fired. The product by Yardarm Technologies would notify dispatchers in real time when an officer's gun is taken out of its holster and when it's fired. It can also track where the gun is located and in what direction it was fired.
Scientists have been able to manufacture 3-D isotropic metamaterials, but up to now only on a very small scale. Now, in a significant breakthrough, scientists from RIKEN, in collaboration with colleagues in Taiwan, have succeeded in creating a large metamaterial up to 4-mm-square in size that is essentially isotropic, using a type of metamaterial element called a split-ring resonator.
Sandia National Laboratories has begun laboratory-based characterization of TransPower’s GridSaver, the largest grid energy storage system analyzed at Sandia’s Energy Storage Test Pad in Albuquerque. Sandia will evaluate the 1 MW, lithium-ion grid energy storage system for capacity, power, safety and reliability. The laboratory also will investigate the system’s frequency regulation.
When a solid material is immersed in a liquid, the liquid immediately next to its surface differs from that of the bulk liquid at the molecular level. This interfacial layer is critical to our understanding of a diverse set of phenomena. When the solid surface is charged, it can drive further changes in the interfacial liquid. However, elucidating the molecular structure at the solid-liquid interface under these conditions is difficult.
Researchers at the New York Univ. Polytechnic School of Engineering have broken new ground in the development of proteins that form specialized fibers used in medicine and nanotechnology. For as long as scientists have been able to create new proteins that are capable of self-assembling into fibers, their work has taken place on the nanoscale. For the first time, this achievement has been realized on the microscale.
New achievements in synthetic biology, which will allow complex cellular recognition reactions to proceed outside of living cells, will dare scientists to dream big: There could one day be inexpensive, shippable and accurate test kits that use saliva or a drop of blood to identify specific disease or infection.
At first glance, the static, greyscale display created by a group of researchers in Hong Kong might not catch the eye of a thoughtful consumer in a market saturated with flashy, colorful electronics. But a closer look at the specs could change that: the ultra-thin LCD screen is capable of holding 3-D images without a power source, making it a compact, energy-efficient way to display visual information.
For as long as scientists have been able to create new proteins that are capable of self-assembling into fibers, scientists’ work has taken place on the nanoscale. For the first time, this achievement has been realized on the microscale, a leap of magnitude in size that presents significant new opportunities for using engineered protein fibers.
An international team of scientists have become the first to successfully reach temperatures below -272.15 C, which is just above absolute zero, using magnetic molecules. The effort, which avoids the use of helium, depends on a form of gadolinium that appropriately has a structure resembling a snowflake.
A group of scientists in Florida have combined medicine and advanced nanotechnological engineering to create a smarter, more targeted therapy that could overcome the most lethal gynecologic cancer. The technology involves combining Taxol, a chemotherapy drug, with magneto-electric nanoparticles that can penetrate the blood-brain barrier.
A few short years ago, the idea of a practical manufacturing process based on getting molecules to organize themselves in useful nanoscale shapes seemed far-fetched. Recent work at NIST, Massachusetts Institute of Technology and IBM Almaden Research Center suggest this capability isn’t far off, however, by demonstrating self-assembly of thin films on a polymer template that creates precise rows just 10 nm wide.
The final version of the U.S. Government Cloud Computing Technology Roadmap, Volumes I and II has been published by NIST. The roadmap focuses on strategic and tactical objectives to support the federal government’s accelerated adoption of cloud computing. This final document reflects the input from more than 200 comments on the initial draft received from around the world.
Bio-engineers are working on the development of biological computers: biological material that can be integrated into cells to change their functions. Researchers in Europe have now developed a biological circuit that controls the activity of individual sensor components using internal "timer". This circuit prevents a sensor from being active when not required by the system; when required, it can be activated via a control signal.
Major leaks from oil and gas pipelines have led to home evacuations, explosions, millions of dollars in lawsuit payouts and valuable natural resources escaping into the air, ground and water. But scientists say they have developed a new software-based method that finds leaks even when they’re small, which could help prevent serious incidents and save money for customers and industry.
So long Silicon Valley. These days entrepreneurs and engineers are flocking to a place better known for surfing waves than the Web. Amid the palm trees and purple sunsets of the Southern California coastline, techies have built "Silicon Beach."
The AN/AAR-57 Common Missile Warning System (CMWS) helps protect Army aircraft from attack by shoulder-launched missiles and other threats. To keep this defensive system operating at maximum effectiveness, the Army periodically updates the software on the more than 1,000 AN/AAR-57 units in use around the world.
Though it garners few headlines, carbonic acid, the hydrated form of carbon dioxide, is critical to both the health of the atmosphere and the human body. However, because it exists for only a fraction of a second before changing into a mix of hydrogen and bicarbonate ions, carbonic acid has remained an enigma. A new study has yielded new information about carbonic acid with important implications for geological and biological concerns.
When studying extremely fast reactions in ultra-thin materials, two measurements are better than one. A new research tool invented by researchers at Lawrence Livermore National Laboratory (LLNL), Johns Hopkins Univ. and NIST captures information about both temperature and crystal structure during extremely fast reactions in thin-film materials.
Nature has developed a wide variety of methods for guiding particular cells, enzymes and molecules to specific structures inside the body: White blood cells can find their way to the site of an infection, while scar-forming cells migrate to the site of a wound. But finding ways of guiding artificial materials within the body has proven more difficult.
Action-packed science-fiction movies often feature colorful laser bolts. But what would a real laser missile look like during flight, if we could only make it out? How would it illuminate its surroundings? The answers lie in a film made by researchers in Poland who have captured the passage of an ultrashort laser pulse through the air.
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