All Articles Tagged As: dna

Scientists create custom 3-dimensional structures with 'DNA origami' (5/22/2009)

By combining the art of origami with nanotechnology, Dana-Farber Cancer Institute researchers have folded sheets of DNA into multilayered objects with dimensions thousands of times smaller than the thickness of a human hair. These tiny structures could be forerunners of custom-made biomedical nanodevices such as "smart" delivery vehicles that would sneak drugs into patients' cells, where they would dump their cargo on a specific molecular target. ...> Full Article

DNA gripped in nanopores (5/15/2009)

Researchers analyze forces on DNA in gel ...> Full Article

DNA-based assembly line for precision nano-cluster construction (3/31/2009)

Method could lead to rapid, reliable assembly of new biosensors and solar cells ...> Full Article

Chemists create two-armed nanorobotic device to maneuver world's tiniest particles (2/17/2009)

Chemists at New York University and China's Nanjing University have developed a two-armed nanorobotic device that can manipulate molecules within a device built from DNA. The device is described in the latest issue of the journal Nature Nanotechnology. ...> Full Article

Nanoscopic static electricity generates chiral patterns (2/6/2009)

Researchers at Northwestern University in the group of Monica Olvera de la Cruz, professor of materials science and engineering and chemical and biological engineering at the McCormick School of Engineering and Applied Science, have recently shown how electrostatic interactions -- commonly known as static electricity -- alone can give rise to helical shapes. The group has constructed a mathematical model that can capture all possible regular shapes chiral objects could have, and they computed the preferred arrangements induced by electrostatic interactions. ...> Full Article

Easy assembly of electronic biological chips (1/19/2009)

A handheld, ultra-portable device that can recognize and immediately report on a wide variety of environmental or medical compounds may eventually be possible, using a method that incorporates a mixture of biologically tagged nanowires onto integrated circuit chips, according to Penn State researchers. ...> Full Article

The gold standard: Researchers use nanoparticles to make 3-D DNA nanotubes (1/2/2009)

DNA nanotubes may soon find their way into a new generation of ultra-tiny electronic and biomedical innovations ...> Full Article

Using living cells as nanotechnology factories (10/10/2008)

Researchers are using cells as factories to make DNA based nanostructures inside a living cell. ...> Full Article

Scientists develop new, more sensitive nanotechnology test for chemical DNA modifications (9/24/2008)

Researchers at The Johns Hopkins University School of Medicine in Baltimore have developed a novel test to screen for chemical modifications to DNA known as methylation. The technology potentially could be used both for early cancer diagnoses and for assessing patients' response to cancer therapies. ...> Full Article

Scientists create DNA tubes with programmable sizes for nanoscale manufacturing (8/31/2008)

Researchers have developed a simple process for mass producing molecular tubes of identical--and precisely programmable--circumferences. The technological feat may allow the use of the molecular tubes in a number of nanotechnology applications. ...> Full Article

'Nanoglassblowing' Seen as Boon to Study of Individual Molecules (6/12/2008)

New fabrication technique called "nanoglassblowing" that creates nanoscale (billionth of a meter) fluidic devices used to isolate and study single molecules in solution-including individual DNA strands ...> Full Article

Scientists create new nanotech building blocks (6/4/2008)

In the fast-growing world of nanotechnology, researchers are constantly on the lookout for new building blocks to push innovation and discovery to scales much smaller than the tiniest speck of dust. ...> Full Article

Scientists make chemical cousin of DNA for use as new nanotechnology building block (5/1/2008)

Researchers are using DNA to make intricate nano-sized objects ...> Full Article

Nano-Softball Made of DNA (4/3/2008)

"Programmed" oligonucleoides with three branches organize themselves into dodecahedra ...> Full Article

Biosensing nanodevice to revolutionize health screenings (3/27/2008)

One day soon a biosensing nanodevice developed by Arizona State University researcher Wayne Frasch may eliminate long lines at airport security checkpoints and revolutionize health screenings for diseases like anthrax, cancer and antibiotic resistant Staphylococcus aureus (MRSA). ...> Full Article

Chemist Recognized for Founding, Establishing the Field of Structural DNA Nanotechnology (3/19/2008)

New York University Chemistry Professor Nadrian Seeman has received the American Chemical Society's Nichols Medal for his founding and establishing the field of structural DNA nanotechnology ...> Full Article

Variable nanocomposites: Small, rigid DNA rings with a gap for the incorporation of functional molecules (3/9/2008)

What appear under an atomic force microscope to be tiny rings with little bits missing are actually nanoscopic rings made of double-stranded DNA with a little gap in the form of a short single-stranded fragment. As Michael Famulok and his team from the University of Bonn, Germany, explain in the journal Angewandte Chemie , this gap is a place to attach other molecules that have the potential to transform the rings into versatile nanocomposites for various applications. ...> Full Article

Remote-control nanoparticles deliver drugs directly into tumors (11/22/2007)

Scientists have devised remotely controlled nanoparticles that, when pulsed with an electromagnetic field, release drugs to attack tumors. The innovation, reported in the Nov. 15 online issue of Advanced Materials, could lead to the improved diagnosis and targeted treatment of cancer. ...> Full Article

Nature and electronics meet: How to make a tiny wire and connect it to DNA (11/21/2007)

Using the structure of DNA as electrical circuitry in computer chips may shrink the costs of production in the field of nano-electronics. ...> Full Article