Navigation Links
Micro microwave does pinpoint cooking for miniaturized labs
Date:11/8/2007

Researchers at the National Institute of Standards of Technology (NIST) and George Mason University have demonstrated what is probably the worlds smallest microwave oven, a tiny mechanism that can heat a pinhead-sized drop of liquid inside a container slightly shorter than an ant and half as wide as a single hair. The micro microwave is intended for lab-on-a-chip devices that perform rapid, complex chemical analyses on tiny samples.

In a paper in the November 2007 Journal of Micromechanics and Microengineering*, the research team led by NIST engineer Michael Gaitan describes for the first time how a tiny dielectric microwave heater can be successfully integrated with a microfluidic channel to control selectively and precisely the temperature of fluid volumes ranging from a few microliters (millionth of a liter) to sub-nanoliters (less than a billionth of a liter). Sample heating is an essential step in a wide range of analytic techniques that could be built into microfluidic devices, including the high-efficiency polymerase chain reaction (PCR) process that rapidly amplifies tiny samples of DNA for forensic work, and and methods to break cells open to release their contents for study.

The team embedded a thin-film microwave transmission line between a glass substrate and a polymer block to create its micro microwave oven. A trapezoidal-shaped cut in the polymer block only 7 micrometers across at its narrowestthe diameter of a red blood celland nearly 4 millimeters long (approximately the length of an ant) serves as the chamber for the fluid to be heated.

Based on classical theory of how microwave energy is absorbed by fluids, the research team developed a model to explain how their minature oven would work. They predicted that electromagnetic fields localized in the gap would directly heat the fluid in a selected portion of the micro channel while leaving the surrounding area unaffected. Measurements of the microwaves produced by the system and their effect on the fluid temperature in the micro channel validated the model by showing that the increase in temperature of the fluid was predominantly due to the absorbed microwave power.

Once the new technology is more refined, the researchers hope to use it to design a microfluidic microwave heater that can cycle temperatures rapidly and efficiently for a host of applications.


'/>"/>

Contact: Michael E. Newman
mnewman@nist.gov
301-975-3025
National Institute of Standards and Technology (NIST)  
Source:Eurekalert

Related biology news :

1. Tips from the Journals of the American Society for Microbiology
2. Princeton engineers develop low-cost recipe for patterning microchips
3. Society for General Microbiology 161st Meeting, University of Edinburgh
4. American Society for Microbiology honors Lucas R. Hoffman
5. American Society for Microbiology honors Joanna Kubler-Kielb
6. American Society for Microbiology honors Hung Ton-That
7. American Society for Microbiology honors Thomas E. Wellems
8. American Society for Microbiology honors Jason T. Blackard
9. American Society for Microbiology honors Michael Bruce Zwick
10. New microsensor measures volatile organic compounds in water and air on-site
11. Scientists decipher mechanism behind antimicrobial hole punchers
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Micro microwave does pinpoint cooking for miniaturized labs
(Date:2/1/2016)... NEW YORK , Feb. 1, 2016  Today, ... Heart Association (AHA) announced plans to develop a first ... cognitive computing power of IBM Watson. In the first ... disease, AHA, IBM (NYSE: IBM ), and Welltok ... metrics and health assessments with cognitive analytics, delivered on ...
(Date:1/27/2016)... 27, 2016  Rite Track, Inc. a leading semiconductor ... West Chester, Ohio announced today the acquisition ... based in Austin, Texas , will ... provide modifications, installations and technical support offerings for TEL ... PLUS, commented, "PLUS has provided world class service including ...
(Date:1/22/2016)... DUBLIN , January 22, 2016 ... has announced the addition of the  ... to their offering. --> ... of the  "Global Behavioral Biometric Market ... --> Research and Markets ( http://www.researchandmarkets.com/research/4lmf2s/global_behavioral ...
Breaking Biology News(10 mins):
(Date:2/9/2016)... Philadelphia, PA (PRWEB) , ... February 09, 2016 , ... ... balance, the 2016 Wharton Health Care Business Conference will bring together over 500 top ... ahead for an industry in transformation. The conference, organized by MBA students of the ...
(Date:2/9/2016)... PA (PRWEB) , ... February 09, 2016 , ... Tunnell ... Europe. Based in Paris, he will focus on acquiring new accounts and work ... met. , “Fred brings to our European clients more than 15 ...
(Date:2/9/2016)... 2016 This market research report on the ... prospects of the market in terms of revenue (USD ... in the manufacture of microbiology culture media and related ... market snapshot providing the overall information of various market ... section also provides the overall information and data analysis ...
(Date:2/8/2016)... Feb. 8, 2016 /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ("Biorem" ... ten finalists for clean technology companies in the TSX Venture ... 10 companies listed on the TSX Venture Exchange, in each ... clean technology & life sciences, diversified industries and ... given to return on investment, market cap growth, trading volume ...
Breaking Biology Technology: