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Showing Spotlights 41 - 47 of 47 in category DNA-based Nanotechnology (newest first):

 

DNA as template for assembling nanostructures

Recent developments in DNA-based nanotechnology have shown the suitability of this novel assembly method for constructing useful nanostructures. DNA molecules can serve as precisely controllable and programmable scaffolds for organizing functional nanomaterials in the design, fabrication, and characterization of nanometer scale electronic devices and sensors. DNA-templated metallic nanowires are such an example and over the past few years DNA scaffolds have been metallized with silver, gold, palladium, platinum and copper. DNA-based fabrication methods could ultimately lead to naturally bio-compatible nanodevices.

Posted: Aug 31st, 2006

Building optical molecular probes with nanotubes

Researchers in South Korea used single-walled carbon nanotubes (SWNTs) to tag single-stranded DNA to locate a particular sequence of DNA within a complex genome. The results show that SWNTs may be used as generic nano-biomarkers for the precise detection of specific kinds of genes.

Posted: Jul 18th, 2006

Constructing smart nanomaterials with DNA molecules

Researchers at the University of Illinois at Urbana-Champaign have shown that, by employing small pieces of DNA molecules called aptamers, nanomaterials can be smart enough to assemble or disassemble only in the presence of programmable signals such as AND or OR, with controllable cooperativity.

Posted: Jul 13th, 2006

A milestone towards fast DNA sequencing with nanopore devices

Setting a milestone towards fast DNA sequencing by a nanopore device, researchers developed a solid state nanopore device that can detect the difference between single molecules of double and single stranded DNA at high speed, with high accuracy, and at extreme pH. This research is a key step to develop a nanopore sequencing machine. More immediate application may be the sensing of long chain polymers for medical diagnostics.

Posted: Jun 22nd, 2006

Researchers use nanoscale zinc oxide structures to detect anthrax

A new approach promotes the use of zinc oxide nanomaterials as signal enhancing platforms for rapid, multiplexed, high-throughput, highly sensitive, DNA sensor arrays. Engineered nanoscale ZnO structures can be effectively used for the identification of the biothreat agent, Bacillus anthracis, by successfully discriminating its DNA sequence from other genetically related species.

Posted: Jun 6th, 2006

A simple design for a DNA nanoswitch

French and U.S. researchers designed a nanomechanical DNA switch controlled by the rate of temperature variation, thereby providing a flexible, scalable alternative to simultaneous chemical control of different DNA switches at equilibrium.

Posted: Mar 29th, 2006

Single Molecule Nanometronome

Researchers at the University of Illinois at Urbana-Champaign constructed a DNA-based nanomechanical device called the nanometronome.

Posted: Feb 13th, 2006