Advertisement
News
Subscribe to R&D Magazine News

The Lead

New analytical technology reveals nanomechanical surface traits

August 27, 2014 | by Emil Venere, Purdue Univ. | Comments

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.

TOPICS:
View Sample

FREE Email Newsletter

R&D Daily

Simpler process to grow germanium nanowires could improve lithium-ion batteries

September 2, 2014 12:07 pm | by Andrew Careaga, Missouri Univ. of Science and Technology | Comments

As a semiconductor material, germanium is superior to silicon. But it is more expensive to process for widespread use in batteries, solar cells, transistors and other applications. Researchers in Missouri have now developed what they call “a simple, one-step method” to grow nanowires of germanium from an aqueous solution. Their process could make it more feasible to use germanium in lithium-ion batteries.

TOPICS:

Ebola genomes sequenced

September 2, 2014 10:28 am | by Lisa Girard, Broad Institute Communication | Comments

Responding rapidly to the deadly outbreak of Ebola virus disease (EVD) in West Africa, a team of researchers from the Broad Institute and Harvard Univ., working with the Sierra Leone Ministry of Health and Sanitation and researchers elsewhere, has sequenced and analyzed many Ebola virus genomes. Their findings could have important implications for rapid field diagnostic tests.

TOPICS:

Research hints at why stress is more devastating for some

September 2, 2014 9:52 am | by Rockefeller Univ. | Comments

Some people take stress in stride; others are done in by it. New research at Rockefeller Univ. has identified the molecular mechanisms of this so-called stress gap in mice with very similar genetic backgrounds—a finding that could lead researchers to better understand the development of psychiatric disorders such as anxiety and depression.

TOPICS:
Advertisement

Engineers develop new sensor to detect tiny individual nanoparticles

September 2, 2014 8:51 am | by Tony Fitzpatrick, Washington Univ. in St. Louis | Comments

A team of researchers in the U.S. and China have developed a new sensor that can detect and count nanoparticles, at sizes as small as 10 nm, one at a time. The researchers say the sensor, which is a Raman microlaser sensor in a silicon dioxide chip that does not need rare-earth ions to achieve high resolution, could potentially detect much smaller particles, viruses and small molecules.

TOPICS:

Mystery of Death Valley's moving rocks solved

September 2, 2014 8:45 am | Comments

For years scientists have theorized about how large rocks, some weighing hundreds of pounds, zigzag across Racetrack Playa in Death Valley National Park, leaving long trails etched in the earth. Now two researchers at the Scripps Institution of Oceanography at the Univ. of California, San Diego, have photographed these "sailing rocks" being blown by light winds across the former lake bed.

TOPICS:

Study shows where on the planet new roads should and should not go

September 2, 2014 8:39 am | Comments

An ambitious study has created a “global roadmap” for prioritizing road building across the planet, to try to balance the competing demands of development and environmental protection. The map has two components: an “environmental-values” layer that estimates that natural importance of ecosystems and a “road-benefits” layer that estimates the potential for increased agriculture production via new or improved roads. 

TOPICS:

Single laser stops molecular tumbling motion instantly

September 2, 2014 8:26 am | Comments

In the quantum world, making the simple atom behave is one thing, but making the more complex molecule behave is another story. Now Northwestern Univ. scientists have figured out an elegant way to stop a molecule from tumbling so that its potential for new applications can be harnessed: shine a single laser on a trapped molecule and it instantly cools to the temperature of outer space, stopping the rotation of the molecule.

TOPICS:

Going to extremes for enzymes

September 2, 2014 8:08 am | by Lynn Yarris, Lawrence Berkeley National Laboratory | Comments

In the age-old nature versus nurture debate, Douglas Clark, a faculty scientist with Lawrence Berkeley National Laboratory and the Univ. of California, Berkeley, is not taking sides. In the search for enzymes that can break lignocellulose down into biofuel sugars under the extreme conditions of a refinery, he has prospected for extremophilic microbes and engineered his own cellulases.

TOPICS:
Advertisement

Surprising new role for calcium in sensing pain

September 2, 2014 7:53 am | by Karl Bates, Duke Univ. | Comments

When you accidentally touch a hot oven, you rapidly pull your hand away. Although scientists know the basic neural circuits involved in sensing and responding to such painful stimuli, they are still sorting out the molecular players. Duke Univ. researchers have made a surprising discovery about the role of a key molecule involved in pain in worms, and have built a structural model of the molecule.

TOPICS:

A new way to diagnose malaria

September 2, 2014 7:38 am | by Anne Trafton, MIT News Office | Comments

Over the past several decades, malaria diagnosis has changed very little. After taking a blood sample from a patient, a technician smears the blood across a glass slide, stains it with a special dye and looks under a microscope for the Plasmodium parasite, which causes the disease. This approach gives an accurate count of how many parasites are in the blood, but is not ideal because there is potential for human error.

TOPICS:

Experimental Ebola drug heals all monkeys in study

August 29, 2014 1:28 pm | by Marilynn Marchione - AP Chief Medical Writer - Associated Press | Comments

An experimental Ebola drug healed all 18 monkeys infected with the deadly virus in a study, boosting hopes that the treatment might help fight the outbreak raging through West Africa. Scientists gave the drug, called ZMapp, three to five days after infecting the monkeys in the laboratory. Most were showing symptoms by then, and all completely recovered.

TOPICS:

We travel with our own germs

August 29, 2014 5:24 am | by Lauran Neergaard - AP Medical Writer - Associated Press | Comments

Sorry, clean freaks. No matter how well you scrub your home, it's covered in bacteria from your own body. And if you pack up and move, new research shows, you'll rapidly transfer your unique microbial fingerprint to the doorknobs, countertops and floors in your new house, too.

TOPICS:

Evolution used similar molecular toolkits to shape flies, worms, humans

August 28, 2014 1:35 pm | by Bill Hathaway, Yale Univ. | Comments

Although separated by hundreds of millions of years of evolution, flies, worms and humans share ancient patterns of gene expression, according to a massive Yale Univ.-led analysis of genomic data. Two related studies led by scientists at Harvard and Stanford,tell a similar story: Even though humans, worms and flies bear little obvious similarity to each other, evolution used remarkably similar molecular toolkits to shape them.

TOPICS:

Sensory-tested drug delivery vehicle could limit spread of HIV, AIDS

August 28, 2014 12:33 pm | by Jeff Mulhollem, Penn State Univ. | Comments

A unique method for delivering compounds that could positively impact the global battle against HIV and AIDS may be possible, thanks to researchers in Penn State's College of Agricultural Sciences. A semi-soft vaginal suppository made from the seaweed-derived food ingredient carrageenan and loaded with the antiviral drug Tenofovir provides a woman-initiated, drug delivery vehicle that can protect against the spread of STIs.

TOPICS:

From nose to knee: Engineered cartilage regenerates joints

August 28, 2014 11:59 am | Comments

Cartilage lesions in joints often appear in older people as a result of degenerative processes, and appear in younger people after injuries and accidents. Such defects are difficult to repair and often require complicated surgery and long rehabilitation times. Researchers in Switzerland have reported that cells taken from the nasal septum are able to adapt to the environment of the knee joint and can thus repair articular cartilage defects.

TOPICS:

Pages

X
You may login with either your assigned username or your e-mail address.
The password field is case sensitive.
Loading