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Scientists create the sensation of invisibility

Could help reduce stress in challenging social situations
April 24, 2015

Ph.D. student Zakaryah Abdulkarim, M.D., shows how to create the illusion of invisibility in the lab (photomontage). (Credit: Staffan Larsson)

How would it feel to be invisible? Neuroscientists at Sweden’s Karolinska Institutet have found out. It can actually changes your physical stress response in challenging social situations, for example.

The history of literature features many well-known narrations of invisibility and its effect on the human mind, such as the myth of Gyges’ ring in Plato’s dialogue The Republic and the science fiction novel The Invisible Man by H.G.… read more

Scientists create tiny backpacks for cells

November 6, 2008

MIT engineers have outfitted cells with tiny “backpacks” that could allow them to deliver chemotherapy agents, diagnose tumors or become building blocks for tissue engineering.

Scientists create world’s first molecular transistor

December 24, 2009

moleculartra

The first transistor made from a single molecule has been created by researchers from Yale University and the Gwangju Institute of Science and Technology in South Korea.

The researchers were able to manipulate a benzene molecule’s different energy states, depending on the voltage they applied to it through gold contacts, to control the current passing through the molecule.

Scientists create world’s tiniest ear

January 16, 2012

optically_trapped_nanoparticle

The “nano-ear,” a nanoparticle of gold 60 nanometers in diameter held in optical tweezers (a laser beam) can detect sound at -60 dB, a million times fainter than the threshold for human hearing.

The Ludwig Maximilian University researchers suggest the work could open up a whole new field of “acoustic microscopy,” in which organisms are studied using the sound they emit, using 3D arrays of nano-ears working together to… read more

Scientists Cure Color Blindness In Monkeys

September 17, 2009

Gene therapy was used to cure two squirrel monkeys of color blindness, opening up the potential for gene therapy to treat adult vision disorders involving cone cells, such as macular degeneration and diabetic retinopathy. researchers from the University of Washington and the University of Florida have found.

“What I want is to see is gene therapy that will turn human beings from trichromats (seeing one million colors) into pentachromats… read more

Scientists debate blending of human, animal forms

November 22, 2004

How human must a chimera (hybrid animal) be before more stringent research rules should kick in?

During one recent meeting, scientists disagreed on such basic issues as whether it would be unethical for a human embryo to begin its development in an animal’s womb, and whether a mouse would be better or worse off with a brain made of human neurons.

Scientists debate value of citizens’ advisory panels

August 6, 2003

The National Science Foundation is experimenting with a system of citizens’ advisory panels to consider the ethical, social and practical implications of new technologies and recommend policies that might reduce misunderstanding and obstruction on issues such as genetically modified foods and nanotechnology.

Scientists Decipher The Formation Of Lasting Memories

November 11, 2009

Researchers at Karolinska Institutet have discovered that signalling via a receptor molecule called nogo receptor 1 (NgR1) in the nerve membrane plays a key part in forming lasting memories during the first week after an event.

The scientists hope that their findings will eventually help in the development of new treatments for memory impairments, such as those related to Alzheimer’s and stroke. Medicines designed to target the NgR1 receptor… read more

Scientists decode brain waves to eavesdrop on what we hear

January 31, 2012

An X-ray CT scan of the head of one of the volunteers, showing electrodes distributed over the brain’s temporal lobe, where sounds are processed. )Credit: Adeen Flinker, UC Berkeley)

Neuroscientists may one day be able to hear the imagined speech of a patient unable to speak due to stroke or paralysis, according to University of California, Berkeley researchers.

These scientists have succeeded in decoding electrical activity in the brain’s temporal lobe — the seat of the auditory system — as a person listens to normal conversation. Based on this correlation between sound and brain… read more

Scientists decode memory-forming brain cell conversations

December 16, 2009

The conversations neurons have as they form and recall memories in real time have been decoded by Medical College of Georgia scientists. The finding could help pinpoint at what stage memory formation is flawed and whether drugs are improving it.

They inserted 128 electrodes in the hippocampus of mice to record the conversations of 200 to 300 neurons as mice learned to associate a certain tone with a mild… read more

Scientists demonstrate method for integrating nanowire devices directly onto silicon

May 9, 2008

Scientists at Harvard University and the German universities of Jena, Gottingen, and Bremen have developed a new technique for fabricating nanowire photonic and electronic integrated circuits that may one day be suitable for high-volume commercial production.

By incorporating spin-on glass technology (used in silicon integrated circuits manufacturing) and photolithography (transferring a circuit pattern onto a substrate with light), the team demonstrated a reproducible, high-volume, low-cost fabrication method for integrating… read more

Scientists Design Molecules That Mimic Nanostructure of Bone

November 26, 2001

Self-assembling molecules developed by scientists at Northwestern University mimic key features of bone at the nanoscale level.Scientists at Northwestern University have become the first to design molecules that could lead to a breakthrough in bone repair. The designer molecules hold promise for the development of a bonelike material to be used for bone fractures or in the treatment of bone cancer patients and have implications for the regeneration of other… read more

Scientists design, control movements of molecular motor

A blueprint for creating machines at the nanoscale
January 11, 2013

ohio_molecular_motor

An international team of scientists has taken the next step in creating nanoscale machines by designing a multi-component molecular motor that can be moved clockwise and counterclockwise.

Although researchers can rotate or switch individual molecules on and off, the new study is the first to create a stand-alone molecular motor that has multiple parts, said Saw-Wai Hla, an Ohio University professor of physics and astronomy,… read more

Scientists Detect Two Decision-making Pathways in Human Brain

October 20, 2004

New research suggests why people are often torn between impulsively choosing immediate rewards or more deliberatively planning for the future: human decision-making is influenced by the interactions of two distinct systems in the brain which are often at odds.

Study participants made choices between immediate and longer-term rewards. When participants chose between incentives that included an immediate reward, fMRI scans indicated heightened activity in parts of the brain, such… read more

Scientists develop artificial heart that beats like the real thing

October 29, 2008

An artificial heart that beats almost exactly like the real thing has been developed by Alain Carpentier, France’s leading cardiac surgeon, and engineers from EADS, Europe’s aerospace and defence giant.

Sensors in the artificial heart will automatically regulate the heart rate and blood flow, detecting the body’s needs, increasing the rhythm when a patients are walking, for instance, and slowing it when they are resting. A pseudo-skin of biosynthetic,… read more

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