Navigation Links
Quartz crystal microbalances enable new microscale analytic technique
Date:11/24/2010

A new chemical analysis technique developed by a research group at the National Institute of Standards and Technology (NIST) uses the shifting ultrasonic pitch of a small quartz crystal to test the purity of only a few micrograms of material. Since it works with samples close to a thousand times smaller than comparable commercial instruments, the new technique should be an important addition to the growing arsenal of measurement tools for nanotechnology, according to the NIST team.

As the objects of scientific research have gotten smaller and smalleras in nanotechnology and gene therapythe people who worry about how to measure these things have been applying considerable ingenuity to develop comparable instrumentation.* This new NIST technique is a riff on thermogravimetric analysis (TGA), an imposing name for a fairly straightforward concept. A sample of material is heated, very slowly and carefully, and changes in its mass are measured as the temperature increases. The technique measures the reaction energy needed to decompose, oxidize, dehydrate, or otherwise chemically change the sample with heat.

TGA can be used, for example, to characterize complex biofuel mixtures because the various components vaporize at different temperatures. The purity of an organic sample can be tested by the shape of a TGA plot because, again, different components will break down or vaporize at different temperatures. Conventional TGA, however, requires samples of several milligrams or more of material, which makes it hard to measure very small, laboratory-scale powder samplessuch as nanoparticlesor very small surface chemistry features such as thin films.

What's needed is an extremely sensitive "microbalance" to measure the minute changes in mass. The NIST group found one in the quartz crystal microbalance, essentially a small piezoelectric disk of quartz sandwiched between two electrodes. An alternating current across the electrodes causes the crys
'/>"/>

Contact: Michael Baum
baum@nist.gov
301-975-2763
National Institute of Standards and Technology (NIST)
Source:Eurekalert  

Page: 1 2

Related biology news :

1. X-ray crystallography reveals structure of precursor to blood-clotting protein
2. New type of liquid crystal promises to improve performance of digital displays
3. How do your crystals grow?
4. A crystal ball for predicting the effects of global climate change
5. Cholesterol crystals incite inflammation in coronary arteries
6. Ancestral Eve crystal may explain origin of lifes left-handedness
7. Researchers envision high-tech applications for multiferroic crystals
8. Scientists watch as peptides control crystal growth with switches, throttles and brakes
9. A crystal ball for brain cancer?
10. Nanocrystals reveal activity within cells
11. Scripps scientists create first crystal structure of an intermediate particle in virus assembly
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Quartz crystal microbalances enable new microscale analytic technique
(Date:11/21/2014)... , Nov. 19, 2014  Earlier this year ... New York College, and one of the most prolific ... signals that are transmitted from Smartphones to third party ... Smartphones and has one of the earliest known patents ... its usage in the military, child care, elder care ...
(Date:11/21/2014)... , Nov. 20, 2014   Atmel® Corporation ... microcontroller (MCU) and touch technology solutions, today launched the ... with the widest V cc range from ... accuracy and faster I 2 C bus communication speeds, ... EEPROM memory making them ideal for consumer, industrial, computer, ...
(Date:11/18/2014)... The Parenteral Drug Association (PDA) today confirmed that ... and at least seven more will participate in the upcoming ... Hotel in Washington D.C. , Dec. 2-4. ... support from the regulatory agencies in the United ... our effort to help advance the use of metrics in ...
Breaking Biology News(10 mins):Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 2Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 3Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 4Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 2Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 3Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 4FDA's Janet Woodcock, EMA's Emer Cooke Headline PDA Quality Metrics Conference 2
... As 17 countries and 30 organizations launch ... major environmental groups World Wildlife Fund, The ... governments, businesses, scientists, non-governmental organizations and individuals around ... coral reefs. The International Year of the Reef ...
... Stowers Institutes Proteomics Center has published a novel method ... of affinity purifications analyzed by mass spectrometry (APMS) to ... to associate with one another. The ... not only to the interactions within well-defined protein assemblies, ...
... as many scientists had given up the search, researchers ... cells with the capacity to generate new insulin-producing beta ... for humans, the newfound progenitor cells will represent an ... diabetes, the researchers report in the Jan. 25 issue ...
Cached Biology News:Environmental groups call for increased protection of coral reefs 2Stowers Proteomics Center devises method for assigning probabilities to human protein interactions 2Elusive pancreatic stem cells found in adult mice 2
(Date:12/24/2014)... Texas (PRWEB) December 23, 2014 ... methyl mercaptan such as its definition, classification, ... presents product specification, manufacturing process, and product ... technology and applications. The analysis also covers ... marketing channels, industry development trend and proposals. ...
(Date:12/24/2014)... AUSTIN, Texas , Dec. 23, 2014 /PRNewswire/ ... solutions company focused on gynecologic disease, announced today ... W. Schuler , Birchview Fund LLC and several ... million of unregistered shares of Vermillion,s common stock ... common stock in a private placement.  ...
(Date:12/22/2014)... The Center for Professional Innovation ... training across the life sciences industry, has partnered with ... to provide the organization's members with discounted classroom courses, ... the more than 350 sessions across 80 course titles. ... when registering for a public course at ...
(Date:12/22/2014)... MISSION VIEJO, Calif. , Dec. 22, 2014 /PRNewswire/ ... announce that CoPatient, an online medical bill review and ... newest offering in the FREE WellCard Savings discount health ... a medical bill that was more than they expected ... help members reduce health care costs, WellCard Savings is ...
Breaking Biology Technology:Worldwide Methyl Mercaptan Market 2015-2020 Forecasts on Development & Trends Now Available at ReportsnReports.com 2Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 2Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 3Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 4Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 5CfPIE Announces Partnership with the Society for Clinical Data Management 2CfPIE Announces Partnership with the Society for Clinical Data Management 3WellCard Savings Announces CoPatient Medical Bill Review Service for Members 2
... Truman Medical Centers (TMC),became one of the first hospitals ... AS 128 slice CT scanner this week. The 128-slice,CT ... with minimal radiation exposure to the patient., "To ... country to have this,truly, first of its kind, state-of-the-art ...
... - Enerkem Inc., a leading second,generation biofuels ... new Vice-Presidents to its executive team: Mr. ... Marie-Helene Labrie,Vice-President, Government Affairs and Communications., ... executives to our management,team," said Mr. Vincent ...
... Aug. 28 deCODE genetics,(Nasdaq: DCGN ) today ... deCODE,CSO Jeffrey Gulcher,s presentation at Thomas Weisel Partners Healthcare,Conference ... PM ET / 5:30 PM GMT / 6:30,PM British ... Seasons Hotel,Boston, MA. The webcast can be accessed through ...
Cached Biology Technology:Truman Medical Centers Becomes One of the First Hospitals in the U.S. To Install the World's First Adaptive 128-slice CT Scanner 2Enerkem Expands Executive Management Team 2deCODE genetics to Webcast Presentation at Thomas Weisel Partners Healthcare Conference 2008 2