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:12/24/2014)... 2014  Since its launch in December 2014, the ... to eliminate the pain of trying to remember their ... their own biometrics fused to their smartphones. To assist ... Hoyos Labs , the company that created 1U ... is offering the app for free. 1U ...
(Date:12/22/2014)... -- NXT-ID, Inc. (NASDAQ: NXTD and NXTDW) ... on the growing mobile commerce market, announces it has ... Robbins for the 2015 International CES debut of ... Apollo Robbins will be at the NXT-ID booth ... of his famous theft techniques to visiting media and ...
(Date:12/22/2014)... 22, 2014 Research and Markets ... addition of the "The Global Watermarking ... offering. http://photos.prnewswire.com/prnh/20130307/600769 ... overview of the global digital media watermarking ... and monitor piracy by securely and invisibly ...
Breaking Biology News(10 mins):1U Offers Best Solution to the Username / Password Dilemma: For FREE! 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 3NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 2NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 3NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 4The Global Watermarking and Fingerprinting Markets 2
... RNA component units called ribonucleotides become embedded in genomic ... organism, they can cause problems for cells. It is ... DNA double helix, resulting in genomic instability and altered ... fate of these ribonucleotides. A new study provides ...
... 3, 2011--A "team" of fast-moving, bone marrow stem cells from ... first World Cell Race, finishing first with a cellular speed ... minute) in results announced today at the 51st Annual Meeting ... The mesenchymal bone marrow stem cells grown at the National ...
... In a paper published in the December 2011 issue ... of scientists at the University of Illinois, Urbana-Champaign led ... and host inflammatory factors modulate sulfomucin production in a ... Sulfomucins, one of two primary types of ...
Cached Biology News:Study identifies mechanisms cells use to remove bits of RNA from DNA strands 2Microscopic cells race to victory in first World Cell Race at ASCB meeting 2Microscopic cells race to victory in first World Cell Race at ASCB meeting 3Inflammatory cues modulate goblet cell products important for intestinal barrier function 2Inflammatory cues modulate goblet cell products important for intestinal barrier function 3
(Date:12/24/2014)... Md. , Dec. 24, 2014  United ... today that Medtronic, Inc. (NYSE: MDT ... the U.S. Food and Drug Administration (FDA) for ... implantable drug infusion system (including a newly developed ... (treprostinil) Injection delivered intravenously to patients with ...
(Date:12/24/2014)... and NEW YORK , ... PTBI, PTBIW), a biopharmaceutical company advancing patient care in ... offering of 3,500,000 shares of common stock, and warrants ... common stock, at an offering price of $4.00 per ... per share exercise price of $5.00, are exercisable immediately, ...
(Date:12/24/2014)... 24, 2014  Vermillion, Inc. (Nasdaq:   VRML), ... announced today that the Company closed its previously ... Management, Jack W. Schuler , Birchview Fund ... $10.5 million, before offering expenses.  The proceeds will ... purposes. Under the terms of the ...
(Date:12/24/2014)... 24, 2014   BioLife Solutions , Inc. (NASDAQ: ... marketer of proprietary clinical grade hypothermic storage ... thermal shipping products for cells and tissues  ("BioLife" ... its 2015 Annual Meeting of Stockholders on May 4, ... date for the Annual Meeting represents a change of ...
Breaking Biology Technology:United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 3United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 4PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 3Vermillion Announces Closing of Equity Financing 2Vermillion Announces Closing of Equity Financing 3BioLife Solutions Sets Date for Annual Meeting of Stockholders 2
... Silicon Graphics, Inc . has received interim approval from ... million financing facility to fund day-to-day business operations during ... hearing in which the U.S. Bankruptcy Court for the ... first-day motions to protect employees, suppliers, and customers. The ...
... year after Chippewa Valley Technical College pioneered ... approved a $1.5 million grant to help build the ... will cover part of the cost of construction for ... estimated 650 jobs and generate $30 million in private ...
... - RedPrairie Corp. , the Waukesha-based ... of supply-chain solutions during a recent user conference. , ... logistics industry summit, RedPrairie unveiled its E2e suite of ... addresses the consumer-driven supply chain challenges faced by customers. ...
Cached Biology Technology:SGI receives court approval for bankruptcy motions 2
Mouse monoclonal antibody raised against a partial recombinant VRK2. NCBI Entrez Gene ID = VRK2...
Mouse monoclonal antibody raised against a full length recombinant PPIL2. NCBI Entrez Gene ID = PPIL2...
Mouse monoclonal antibody raised against a partial recombinant L3MBTL2. NCBI Entrez Gene ID = L3MBTL2...
Mouse monoclonal antibody raised against a partial recombinant ALAS2. NCBI Entrez Gene ID = ALAS2...
Biology Products: