Chad Mirkin is developing a new DNA detection method. The Northwestern University professor and director of the school's Institute of NanoTechnology pairs microelectrodes and nanoprobes for detecting Anthrax, small pox, and other biohazards. He asserts that nanotechnology offers better results in all categories of detection, including sensitivity, selectivity, cost, ease of use, and speed. The new detection method eliminates the need to heat the gene chip. Mirkin says that companies in the gene chip technology business currently use a polymerase chain reaction (PCR) for detection. Gene chips are read using a confocal microscope, a complex instrument costing more than $60,000. Mirkin's electrical DNA detection method eliminates the PCR. It also allows testing of thousands of biological targets on a single chip. Various DNA tests are placed on a glass slide, each made up of single strands of synthesized DNA that bind with targeted DNA. The bound strands are placed between a pair of electrodes, one test for each pair. When the slide is placed in a solution containing the target, perfect and partial matches bind to gold probes. The probe accumulations are then amplified using modified photographic developing solution. Each gold nanoparticle becomes covered with silver and grows in size, closing the gap between the electrodes and thus carrying a current. For more information, go to www.northwestern.edu.
Lantronix Inc. has expanded its line of controllers for sensor networks with the release of a rugged controller that improves management of automation systems used in a number of industries, including manufacturing, oil and gas, and chemicals.
Inspired by the hooks a parasitic worm uses to penetrate its host's intestines, the Karp Lab has invented a flexible adhesive patch covered with microneedles that adheres well to wet, soft tissues, but doesn't cause damage when removed.
A quick look into the merger of two powerhouse 3D printing OEMs and the new leader in rapid prototyping solutions, Stratasys. The industrial revolution is now led by 3D printing and engineers are given the opportunity to fully maximize their design capabilities, reduce their time-to-market and functionally test prototypes cheaper, faster and easier. Bruce Bradshaw, Director of Marketing in North America, will explore the large product offering and variety of materials that will help CAD designers articulate their product design with actual, physical prototypes. This broadcast will dive deep into technical information including application specific stories from real world customers and their experiences with 3D printing. 3D Printing is