Most Recently Added Most commentedBy Title | A-Z

Sub-angstrom microscope targets nanotechnology

August 2, 2005

FEI Co. has unveiled what it claims is the highest-resolution scanning-transmission electron microscope, enabling sub-angstrom (atomic scale) imaging and analysis.

A team of researchers plans to use it to make direct observations and analysis of individual atoms at 0.5-angstrom resolution — a key dimension for atomic level research since it is one-third the diameter of a carbon atom.

Sub-nanometer graphene nanopores for low-cost DNA sequencing

Less costly ways of seqequencing DNA could open new possibilities for disease prevention
October 4, 2012

TEM image of shrinkage of nanopore in a graphene sheet

Engineers at the University of Texas at Dallas have used advanced techniques to make the material graphene small enough to read DNA by shrinking the size of a graphene pore to less than one nanometer — opening the possibility of using graphene as a low-cost tool to sequence DNA.

“Sequencing DNA at a very cheap cost would enable scientists and doctors to better predict and diagnose disease,… read more

Subatomic particle simulation tool makes cancer therapy safer

November 15, 2011

proton_delivery

At SLAC (Stanford University’s National Accelerator Laboratory), physicists are making cancer therapies safer by using “Geant 4″ software — originally designed for tracking subatomic particles — to map proton paths through patients’ bodies during radiation treatment.

In conventional radiation treatment, subatomic particles inflict DNA damage on dividing cells (both healthy and cancerous), causing them to commit suicide. The technique works because rapidly… read more

Subatomic quantum memory in diamond demonstrated

June 28, 2011

Physicists at the University of California, Santa Barbara and the University of Konstanz in Germany have developed a breakthrough in the use of diamond in quantum physics, marking an important step toward quantum computing.

The physicists were able to coax the quantum information contained within a single electron in diamond to move into an adjacent single nitrogen nucleus and then back again, using… read more

Subcellular magnetic imaging of living cells

May 1, 2013

A typical electron microscope image of a bacterium; magnetic nanoparticles inside the bacterium appear as black spots. A new technique has been developed that is capable of studying living cells at comparable spatial resolutions by taking advantage of the presence of these magnetic particles.<br />
Credit: Nature

Harvard-Smithsonian Center for Astrophysics (CfA) scientists have developed a method for determining the magnetic structure of living biological specimens down to a sub-cellular level.

In their study, they use “magnetotactic” bacteria (MTB), which contain magnetic nanoparticles.

The researchers, David Le Sage, David Glenn, and Ron Walsworth, together with their collaborators, place these live bacteria onto a diamond surface that has been modified to contain crystal defects… read more

Subliminal advertising leaves its mark on the brain

March 12, 2007

University College London researchers have found the first physiological evidence that invisible subliminal images do attract the brain’s attention on a subconscious level.

Using fMRI to detect the impact on brain activity in the primary visual cortex, they found subjects’ brains did respond to the object even when they were not conscious of having seen it.

“These findings point to the sort of impact that subliminal… read more

Subliminal advertising may work after all

May 1, 2006

Researchers have shown that if the conditions are right, subliminal advertising to promote a brand can be made to work.

Subliminal messages really do affect your decisions

February 16, 2009

Subliminal messages do inform people’s decision-making, Northwestern University researchers have found.

Subliminal study shows subconscious learning is possible

October 26, 2001

Subconscious learning probably is possible, say Boston University researchers, and subconscious learning may affect our conscious decisions — without our realising it.

Takeo Watanabe and his colleagues at Boston University found that people who had watched a particular direction of subliminal dot movement during a letter-naming trial were significantly better at picking it out later.

The finding challenges the idea that attention is an essential element of the… read more

Submarines could use new nanotube technology for sonar and stealth

July 15, 2010

nanotubespeakers

“Nanotube speakers” made from carbon nanotube sheets have been found to be able can both generate sound and cancel out noise — properties ideal for submarine sonar to probe the ocean depths and make subs invisible to enemies, according to a report in ACS’ Nano Letters.

Ali Aliev of MacDiarmid NanoTech Institute, University of Texas at Dallas and colleagues explain that thermoacoustic sound generation results from temperature variation in a carbon nanotube sheet… read more

Subtext makes eBook reading social

October 25, 2011

(Credit: Subtext)

The startup Subtext offers a new social eBook reading experience to iPad users, by making margin notes interactive and adding context to the eBook experience through social networking and web content.

Users can engage in conversations with friends, community members, as well as authors and experts. Readers can get author, expert, and community information, contribute their own thoughts, as well as add and explore links to relevant… read more

Subtitle-Reading Glasses Make Cinema-Going for the Hard of Hearing Less, um, Hard

April 19, 2007

Madrid’s Carlos III University has developed a gadget that projects subtitles in a movie theater.

A computer in the cinema emits the subtitles to within 50 meters; a receptor in the glasses captures the signal and projects it onto the microscreen, which fits over the right-hand lens.

Subtle nervous system abnormalities may predict risk of death in older individuals

June 23, 2008

University of Florence researchers and colleagues have found that subtle but clinically detectable neurological abnormalities such as reduced reflexes or unstable posture help predict the risk of death and stroke in otherwise healthy older adults–possibly a sign of early brain damage.

These results suggest that a standard neurological exam should become a routine part of healthcare for older adults, because the exam has a predictive value similarread more

Sugar in the gas tank? It might run your car someday

February 1, 2007

Amyris Biotechnologies hopes to convert sugar directly to fuel by reprogramming microbes.

Jack Newman, PhD, Amyris Biotechnologies VP: “Why are we making ethanol if we’re trying to make a fuel? We should be making something that looks a lot more like gasoline. We should be making something that looks a lot more like diesel. And if you wanted to design, you name it, a jet fuel? We can make… read more

Sugar molecules — building blocks of RNA — found around young star

August 30, 2012

Astronomers have for the first time found glycolaldehyde molecules around a young sun-like star. Glycolaldehyde is a an important pre-biotic species, a simple sugar, consisting of carbon, oxygen and hydrogen atoms. Through observations with ALMA the researchers have shown that the molecules are located within a region with an extent corresponding to our own solar system - and thus exist in the gas from which planets possibly are formed around the young star later in its evolution. (Credit: ESO)

A team of astronomers led by researchers from the Niels Bohr Institute, have observed a simple sugar molecule in the gas surrounding a young star, proving that the building blocks of life were already present during planet formation.

They also found other complex organic molecules, including ethylene-glycol, methyl-formate and ethanol.

Sugar around new stars

“In the protoplanetary disc of gas and dust surrounding… read more

close and return to Home