Navigation Links
New way to make sensors that detect toxic chemicals
Date:8/14/2009

new synthesis method that yields very small particles -- which give the sensor a large surface area to capture chemical molecules from the air -- and very pure particles -- which enable the sensor to detect even very small quantities of a substance.

Each particle of nickel oxide measures only about 50 atoms across -- that's equivalent to five nanometers (billionths of a meter).

Beach described the synthesis method in very simple terms. "Basically, you mix everything together in a pressure vessel, pop it in the oven, rinse it off and it's ready to use," he said.

Of course, for the process to go smoothly, the researchers have to meet specific conditions of temperature and pressure, and leave the material in the pressure cooker for just the right amount of time. For this study, they set the pressure cooker to around 225 C. They found they can make the particles in as little as 12 hours, but no more than 24 hours.

"Too short a time, and the nickel oxide doesn't form -- too long and it reduces to metallic nickel," Beach explained.

After he removes the nickel oxide from the pressure cooker, he washes it in a common solvent called methyl ethyl ketone to free up the nanoparticles.

At that point, the material is ready to use. Most other synthesis methods require another additional step -- a high-temperature heat treatment.

Starting with a microsensor silicon chip array provided by collaborators at the National Institute of Standards and Technology (NIST), Beach adds a layer of particles using a device called a picoliter drop dispenser. A picoliter is a trillionth of a liter.

He describes the dispenser as a kind of inkjet printer that places a droplet of a liquid suspension containing particles onto a surface -- in this case, the chips.

According to Morris, this is the first time that nickel oxide nanoparticles have been applied in this way.

But to Beach, the most important "first" to c
'/>"/>

Contact: Patricia Morris
Morris.692@osu.edu
614-247-8873
Ohio State University
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. Catching the lightwave: Nano-mechanical sensors wired by photonics
2. Connecting Materials Science With Biology, K-State Engineers Create DNA Sensors That Could Identify Cancer Using Material Only One Atom Thick
3. Fitting pieces for biosensors
4. Innovative Biosensors and ProGenTech Partner to Develop a Rapid Diagnostics System
5. Clemson researchers advance nanoscale electromechanical sensors
6. Clemson researchers advance nanoscale electromechanical sensors
7. Winning University of Melbourne Ph.D. research boosts the search for sensitive sensors
8. Finesse Solutions Launches Improved E-Store for Sensors and Transmitters
9. Nanoscience Instruments, Inc. Announces Distribution of Nascatec's Complete Line of Unique AFM Probes and Sensors
10. Commencement 2008: Student innovation could improve data storage, magnetic sensors
11. Nanotube production leaps from sooty mess in test tube to ready formed chemical microsensors
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/22/2015)... January 22, 2015 GEA Niro Soavi ... top laboratory homogenizer, the PandaPLUS 2000, which is ideal ... , and cell disruption . This compact laboratory ... fruit juices, liquid food, food additives and ingredients as ...
(Date:1/22/2015)... Rootstown, OH (PRWEB) January 22, 2015 Crystal ... announced today that it has received AOAC-PTM Certifications for the ... O111, O121, and O145; collectively referred to as STEC or ... at 1 colony forming unit (cfu) per 325 g of ...
(Date:1/22/2015)... (PRWEB) January 22, 2015 Selexis SA, ... mammalian Research Cell Banks (RCBs) used for drug discovery ... Cell Banks will include Next-Generation Sequencing (NGS) ... architecture de-risks biologic manufacturing by ensuring the integrity of ...
(Date:1/22/2015)... Jan. 22, 2015   GenoSpace , a precision medicine software ... enable the broad use of genomic, imaging and other biomedical ... of Michelle Munson , CEO of Aspera, an IBM ... Logo - http://photos.prnewswire.com/prnh/20150122/170713 "We are ...
Breaking Biology Technology:GEA Niro Soavi Announces the PandaPLUS 2000 Homogenizer for Processing New Applications for Nanoemulsions and Cell Disruption 2Crystal Diagnostics Awarded AOAC-PTM Accreditation for the Rapid Detection of “Big 6” E.coli Food Pathogens 2Selexis Generated Research Cell Banks Now Fully Sequenced Using Next-Generation Sequencing 2GenoSpace Expands Board with Appointment of Michelle Munson 2
... MADISON, WI- The UW-Madison Business Schools Weinert Applied Ventures in ... development in Wisconsin. , ,According to Larry Cox, Director ... at the UW-Madison School of Business, entrepreneurial culture lags behind ... of great technology. We have wonderful research thats going on ...
... - GE Medical Systems, a unit of General Electric ... the U.S. Food and Drug Administration to begin marketing ... system. The Signa EXCITE 3.0T combines the increased speed ... the breadth of imaging capabilities found on premium 1.5 ...
... Americas, Inc., a division of GE Industrial Systems, ... (MSI), a Green Bay manufacturing software development company. ... Manufacturing Execution Systems (MES) technology for the manufacturing ... sciences as well as for pulp and paper ...
Cached Biology Technology:WAVE of the Future? 2WAVE of the Future? 3GE Medical Systems Receives FDA Clearance for New MRI System 2Green Bay Software Company Purchased by GE 2
(Date:12/22/2014)... Conn. , Dec. 22, 2014  NXT-ID, Inc. (NASDAQ: ... biometric authentication company focused on the growing mobile commerce market, ... Apollo Robbins for the 2015 International CES debut ... Apollo Robbins will be at the NXT-ID booth January ...
(Date:12/19/2014)... 2014  23andMe, Inc., the leading personal genetics company, today announced ... genetic ancestry of individuals from across the United ... than four hundred years ago, the United States ... from different continents. This study illuminates how American history and ...
(Date:12/17/2014)... N.C. , Dec. 16, 2014 Valencell, a ... its PerformTek biometric technology to industry leaders such as ... accurate, clinically validated, biometric wearable products. These products will ... in Las Vegas . ...
Breaking Biology News(10 mins):NXT-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 423andMe Study Sketches Genetic Portrait of the United States 223andMe Study Sketches Genetic Portrait of the United States 323andMe Study Sketches Genetic Portrait of the United States 4Valencell PerformTek Biometrics Power the Most Accurate Wearables at CES 2015 2
... paper being presented in two American Physiological Society ... team demonstrated "for the first time that mitochondria ... mitochondria may mechanically regulate nuclear function." , The ... years, reported that it recently "found a very ...
... There's no doubt that laughter feels good, but is ... do about it? , In a paper being presented ... 2006, Lee S. Berk of Loma Linda University, reports ... but just the anticipation of the "mirthful laughter" involved ...
... different plant species are not only more productive, they ... climate extremes, pests and disease over long periods of ... issue of Nature, are the culmination of 12 years ... Ecology at the University of Minnesota, to explore the ...
Cached Biology News:First direct mechanical communication of mitochondria, cardiomyocyte nucleus shown 2First direct mechanical communication of mitochondria, cardiomyocyte nucleus shown 3Just the expectation of a mirthful laughter experience boosts endorphins 27 percent, HGH 87 percent 2Just the expectation of a mirthful laughter experience boosts endorphins 27 percent, HGH 87 percent 3Biodiversity key to sustainable biofuel according to University of Minn. researcher's findings 2
... personal-sized Thermal Cycler is the ideal instrument for ... range of PCR applications. Get Applied ... Save lab space without sacrificing results. ... Industry-Standard PCR Technology You Can Afford ...
... upgraded micro 10 represents a major advance ... of the benefits of large robotic liquid ... benchtop dispenser. Dispensing accurate volumes ranging from ... 10 has unique advantages not yet found ...
This free-standing laminar flow hood provides a horizontal flow of HEPA-filtered air to create a clean processing area. Air return slots along the front and side edges of the work area enhance system...
... Motic's B3 series of microscopes offer all ... required for laboratory work. Equipped with Koehler ... Contrast (ASC) objectives. The B3 is the ... Siedentopf binocular tube eliminates the need for ...
Biology Products: