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Seesmic Desktop delivers seamless Facebook integration

May 4, 2009

Mac/PC twitterers: Seesmic Desktop version 0.2 has launched (a preview but solid), finally integrating Facebook and Twitter updates.

Seesmic is now the official Twitter/Facebook desktop app at @KurzweilAINews. Awesome. – Ed.

Segway creator unveils his next act

February 20, 2006

Dean Kamen, the engineer who invented the Segway, has invented two devices, each about the size of a washing machine, that can provide much-needed power and clean water in rural villages.

The water purifier makes 1,000 liters of clean water a day from any water source. The power generator makes a kilowatt off of anything that burns.

Segway robot opens doors

November 20, 2003

MIT researchers have crossed a robotic arm with the bottom half of a Segway to make a robot that can traverse hallways and open doors.

The researchers are aiming to give the robot the abilities to recognize whether it’s in a room or hallway, recognize and manipulate objects, take instructions, and learn.

Selective brain damage modulates human spirituality

February 11, 2010

Selective damage to the left and right posterior parietal regions induced a specific increase in a personality trait called self-transcendence (ST), thought to reflect a decreased sense of self and an ability to identify one’s self as an integral part of the universe as a whole, Dr. Cosimo Urgesi from the University of Udine and colleages have found by studying patients before and after surgery to remove a brain tumor.… read more

Selective coatings create biological sensors from carbon nanotubes

December 13, 2004

University of Illinois at Urbana-Champaign researchers have developed protein-encapsulated single-walled carbon nanotubes that alter their fluorescence in the presence of specific biomolecules.

The technique could generate many new types of implantable biological sensors. The researchers have already built a near-infrared nanoscale sensor that detects glucose.

Selective nanopores in graphene dramatically improve desalination and purification

February 28, 2014

holes_graphene

A team of researchers at MIT, Oak Ridge National Laboratory, and in Saudi Arabia succeeded in creating subnanoscale pores in a sheet of graphene, a development that could lead to ultrathin filters for improved desalination or water purification. Their findings are published in the journal Nano Letters.

The new work, led by graduate student Sean O’Hern and associate professor of mechanical engineering Rohit Karnik, is the first… read more

Selective Shutdown Protects Nets

September 8, 2004

A researcher from the Max Planck Institute for the Physics of Complex Systems in Germany has shown that it might be possible to suppress cascade failures triggered by attacks on large Internet and power-grid network nodes by shutting down peripheral nodes.

Selectively erasing unwanted memories

September 13, 2013

(Credit: Universal Studios)

Scientists from the Florida campus of The Scripps Research Institute (TSRI) have been able to erase dangerous drug-associated memories in mice and rats without affecting other more benign memories.

The surprising discovery points to a clear and workable method to disrupt unwanted memories while leaving the rest intact, the scientists say.

For recovering addicts and individuals suffering from post-traumatic stress disorder (PTSD), unwanted memories… read more

Self Surveillance

September 11, 2008

Fitbit, a startup based in San Francisco, has built a small, unobtrusive sensor that tracks a person’s movement 24 hours a day to produce a record of steps taken, calories burned, and even the quality of sleep.

Data is wirelessly uploaded to the Web so that users can monitor their activity and compare it with that of their friends.

Self-aligning carbon nanotubes could be key to next generation of devices

February 26, 2009
Scanning electron microscope image of electrodes (inset) and single-walled carbon nanotube bridge structure

University of Nebraska-Lincoln researchers have created nanoscale devices based on connecting sharp-tipped electrodes with individually self-aligned carbon nanotubes.

The finding could lead to new applications in devices such as biosensors, light emitters, photon sensors, tiny molecular motors and memory cells.

Self-Assembled Materials Form Mini Stem Cell Lab

March 28, 2008

Northwestern University researchers have built self-assembling thin-film sacs able to hold human stem cells for four weeks in culture, keeping the cells separated while allowing proteins to cross the membrane.

This new mode of self-assembly from a mix of peptide amphiphiles and biopolymers also can produce thin films whose size and shape can be tailored. The method could be used in cell therapy and other biological applications and in… read more

Self-assembled nano-sized probes image tumors through flesh and skin

February 8, 2005

Nano-sized particles embedded with bright, light-emitting molecules have enabled researchers to visualize a tumor more than one centimeter below the skin surface using only near-infrared light.

They used fluorescent materials called porphyrins within the surface of a polymersome, a cell-like vesicle, to image a tumor within a living rodent. It should also be possible to use an emissive polymersome vesicle to transport therapeutics directly to a tumor.

The… read more

Self-assembled nanocells function as non-volatile memory

October 20, 2003

“Nanocells,” disordered assemblies of gold nanowires and conductive organic molecules, can function as non-volatile memory, Rice University chemists have found.

NanoCells offer the potential to reduce device size and fabrication costs by several orders of magnitude

The research appears in the Oct. 29 issue of the Journal of the American Chemical Society. It marks the first time that a self-assembled ensemble of molecular electronic components has been used… read more

Self-assembled nanoparticles release chemotherapy drug and heat to treat cancer

October 21, 2012

gold nanorods

In new research from Brigham and Women’s Hospital (BWH), researchers have invented self-assembled, multifunctional, near-infrared-light-responsive nanoparticles to treat cancer.

The nanoparticles can deliver a chemotherapy drug specifically targeted to cancer cells and selectively release the drug in response to an external beam of light. They can also create heat for synergistic thermo-chemo-mediated anti-tumor effects.

Excitement around the potential for targeted nanoparticles (NPs) that can be controlled… read more

Self-assembled nanoshell structures have unique optical properties

May 28, 2010

Optical Legos

Scientists from four U.S. universities have created a way to use Rice University’s self-assembled, light-activated nanoshells as building blocks for 2-D and 3-D structures that could find use in chemical sensors, nanolasers and light-absorbing metamaterials.

The new materials are ideally suited for making ultrasensitive biological and chemical sensors, said study co-author Peter Nordlander, professor of physics and astronomy at Rice. He said they may also be useful… read more

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