Navigation Links
Stamping out low cost nanodevices
Date:5/31/2011

material. The more complicated the pattern, the longer it takes to make.

About two years ago, Weiss got the idea of creating pre-mastered stamps using the complex process and then using the stamps to create the devices. Weiss calls the new approach direct imprinting of porous substrates (DIPS). DIPS can create a device in less than a minute, regardless of its complexity. So far, her group reports that it has used master stamps more than 20 times without any signs of deterioration.

Process can produce nanoscale patterns

The smallest pattern that Weiss and her colleagues have made to date has features of only a few tens of nanometers, which is about the size of a single fatty acid molecule. They have also succeeded in imprinting the smallest pattern yet reported in nanoporous gold, one with 70-nanometer features.

The first device the group made is a "diffraction-based" biosensor that can be configured to identify a variety of different organic molecules, including DNA, proteins and viruses. The device consists of a grating made from porous silicon treated so that a target molecule will stick to it. The sensor is exposed to a liquid that may contain the target molecule and then is rinsed off. If the target was present, then some of the molecules stick in the grating and alter the pattern of reflected light produced when the grating is illuminated with a laser.

According to the researchers' analysis, when such a biosensor is made from nanoporous silicon it is more sensitive than those made from ordinary silicon.

The Weiss group collaborated with colleagues in Chemical and Biomolecular Engineering to use the new technique to make nano-patterned chemical sensors that are ten times more sensitive than another type of commercial chemical sensor called Klarite that is the basis of a multimillion-dollar market.

The researchers have also demonstrated that they can use the stamps to make precisely shaped mic
'/>"/>

Contact: David F Salisbury
david.salisbury@vanderbilt.edu
615-343-6803
Vanderbilt University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Researchers create self-assembling nanodevices that move and change shape on demand
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Stamping out low cost nanodevices
(Date:10/30/2014)... news release is available in German . ... as individuals prompt our fellow humans to behave socially? ... social dilemmas in game theory. Previous studies assumed that ... groups. Nonetheless, scientists from the Max Planck Institute for ... can exert an influence on the cooperative behaviour of ...
(Date:10/30/2014)... Philadelphia, PA, October 30, 2014 – Bacteria in ... are critical for digestion. Yet, these same bacteria ... system if they penetrate the gut and enter ... natural response to protect the body, chronic or ... diseases. Prior research has established the involvement of ...
(Date:10/30/2014)... Heidelberg, 30 October 2014 Biological membranes are mainly ... of adsorption of solution ions onto lipid membranes ... a new study provides a quantitative description of ... ions. Joanna Kotyńska and Zbigniew Figaszewski from the ... a study describing these findings, just published in ...
Breaking Biology News(10 mins):Together we are strong -- or insufferable 2Together we are strong -- or insufferable 3Together we are strong -- or insufferable 4Breakdown in gut barriers to bacteria may promote inflammation and craving in alcoholics 2Ion adsorption matter in biology 2
... result of natural processes that exploited early Earth,s raw ... to minerals for such essential tasks as the synthesis ... metabolic energy. But this assumes that the mineral species ... they were during Earth,s first 550 million yearsthe Hadean ...
... size increases, so do portion size and the amount of ... how susceptible people are to this plate-size bias? New research ... and introverted children respond differently to environmental cues, such as ... examined the breakfast behaviors of kids, ages 6 to 10, ...
... discovery may help explain the surprisingly strong connections between ... Sleep loss increases the risk of Alzheimer,s ... signs of this devastating disorder. Scientists at Washington ... University of Pennsylvania have shown that brain cell damage ...
Cached Biology News:Ancient minerals: Which gave rise to life? 2Extrovert and introvert children are not equally influenced by plate size 2Broken cellular 'clock' linked to brain damage 2Broken cellular 'clock' linked to brain damage 3
(Date:10/27/2014)... October 27, 2014 The “Molecular ... Genetics, Microbiology), Technology (PCR, INAAT, DNA Sequencing), End ... Service, Software) - Global Forecast to 2018” provides ... challenges, opportunities, current market trends, and strategies impacting ... estimates and forecasts of the revenue and share ...
(Date:10/27/2014)... Orlando, Florida (PRWEB) October 27, 2014 ... aims at reducing and eliminating several types of ... have not been achieved in over 30 years ... of Noah's Light Foundation, proves that one mom's ... was diagnosed just before Halloween trick-or-treating, and it’s ...
(Date:10/27/2014)... , Oct. 27, 2014 Pressure BioSciences, ... worldwide leader in the development and sale of ... sciences research market, today announced that Professor ... novel, accurate, highly reproducible, and robust method to ... high-throughput protein analysis on small needle biopsy samples ...
(Date:10/27/2014)... 27, 2014 Investor-Edge has initiated ... NBIX ), Insmed Inc. (NASDAQ: ... ), Dyax Corporation (NASDAQ: DYAX ), and ... companies can be accessed at: http://investor-edge.com/register . ... ended at 4,483.72, up 0.69%, the Dow Jones Industrial ...
Breaking Biology Technology:Global Molecular Diagnostics Market Will Reach $7.9 Billion by 2018 - New Research Report by MarketsandMarkets 2Global Molecular Diagnostics Market Will Reach $7.9 Billion by 2018 - New Research Report by MarketsandMarkets 3Global Molecular Diagnostics Market Will Reach $7.9 Billion by 2018 - New Research Report by MarketsandMarkets 4Global Molecular Diagnostics Market Will Reach $7.9 Billion by 2018 - New Research Report by MarketsandMarkets 5FDA Approves Breakthrough in Pediatric Brain Cancer - First in 30 Years 2FDA Approves Breakthrough in Pediatric Brain Cancer - First in 30 Years 3Breakthrough Method to Permit Quantification of Thousands of Proteins in Needle Biopsy Samples in 12 hours Presented at Major International Scientific Meeting; Method Enabled by Pressure BioSciences' PCT Sample Preparation Platform 2Breakthrough Method to Permit Quantification of Thousands of Proteins in Needle Biopsy Samples in 12 hours Presented at Major International Scientific Meeting; Method Enabled by Pressure BioSciences' PCT Sample Preparation Platform 3Breakthrough Method to Permit Quantification of Thousands of Proteins in Needle Biopsy Samples in 12 hours Presented at Major International Scientific Meeting; Method Enabled by Pressure BioSciences' PCT Sample Preparation Platform 4Breakthrough Method to Permit Quantification of Thousands of Proteins in Needle Biopsy Samples in 12 hours Presented at Major International Scientific Meeting; Method Enabled by Pressure BioSciences' PCT Sample Preparation Platform 5Pre-market Equity Watch on Biotech Industry - Neurocrine Biosciences, Insmed, BioCryst Pharma, Dyax, and Oncothyreon 2Pre-market Equity Watch on Biotech Industry - Neurocrine Biosciences, Insmed, BioCryst Pharma, Dyax, and Oncothyreon 3Pre-market Equity Watch on Biotech Industry - Neurocrine Biosciences, Insmed, BioCryst Pharma, Dyax, and Oncothyreon 4Pre-market Equity Watch on Biotech Industry - Neurocrine Biosciences, Insmed, BioCryst Pharma, Dyax, and Oncothyreon 5
... 24 The Pittsburgh Life Sciences,Greenhouse (PLSG), ... industry on a fast track for growth, ... Innovention Technologies, LLC, a developmental-stage,medical device company, ... a,highly-maneuverable surgical probe that will alleviate the ...
... The Interstate,Alliance for Stem Cell Research should adopt a ... the Foundation for Taxpayer and,Consumer Rights (FTCR) said today., ... state,stem cell programs, is meeting today and Thursday at ... still in its early stages, it is critical to ...
... Calif., Oct. 24 Immunosyn,Corporation,s (OTC Bulletin Board: ... brokers and financial institutions at the Financial,Services Exchange ... in Phoenix, AZ on Thursday, October 25, 2007. ... and,distribution rights to SF-1019 from its largest shareholder, ...
Cached Biology Technology:The PLSG Invests $115,000 in Innovention Technologies, LLC 2Consumers Call On Interstate Stem Cell Group To Endorse Open Meetings 2Immunosyn Corporation to Present at FSX 2
... Ciphergen's ProteinChip arrays have been ... from biological samples. A variety of ... of proteins according to their unique ... different spots, allowing side-by-side sample comparison, ...
... Assay with SR-101 Labeled Substrates (red ... Accurately measure serine protease activation • ... B-Bridge's FLISP Kits utilize cell-permeable, fluorescently ... to measure chymotrypsin-like activity in whole ...
... Leu-CMK FLISP Assay with FAM-Labeled Substrate ... • Accurately measure serine protease activation ... • B-Bridge's FLISP Kits utilize cell-permeable, ... (FLISPs) to measure chymotrypsin-like activity in ...
... instrument is the cycler that revolutionized ... uniformity and swappable blocks ensure consistent ... This rugged machine is more than ... for new features and upgrades as ...
Biology Products: