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

tal to vibrate at a stable and precise ultrasonic frequencythe same principle as a quartz crystal watch. Added mass (a microsample) lowers the resonant frequency, which climbs back up as the microsample is heated and breaks down.

In a new paper.** the NIST materials science group demonstrates that their microbalance TGA produces essentially the same results as a conventional TGA instrument, but with samples about a thousand times smaller. They can detect not only the characteristic curves for carbon black, aluminum oxide and a sample organic fluid, but also the more complex curves of mixtures.

"We started this work because we wanted to analyze the purity of small carbon nanotube samples," explains analytical chemist Elisabeth Mansfield. More recently, she says, they've applied the technique to measuring the organic surface coatings biologists put on gold nanoparticles to modify them for particular applications. "Measuring how much material coats the particles surface is very hard to do right now," she says, "It will be a really unique application for this technique."

The prototype apparatus requires that the frequency measurements be made in a separate step from the heating. Currently, the team is at work integrating the microbalance disks with a heating element to enable the process to be simultaneous.


'/>"/>

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:7/7/2015)... June 30, 2015 ... the addition of the "Capacitive Fingerprint Sensors ... To this date, fingerprint sensing technology is ... fingerprint sensors are well developed. This patent landscape ... The domain of capacitive fingerprint sensors ...
(Date:7/2/2015)... DUBLIN , June 25, 2015 ... has announced the addition of the "Natural ... Hybrid), Technologies (Recognition, IVR, OCR, Pattern & Image ... to their offering. The key vendors ... Google, HP, IBM Corporation, Microsoft Corporation, NetBase Solutions, ...
(Date:6/30/2015)... 30, 2015 To bolster its efforts and commitment ... announced today the addition of two new team members. ... advisor and David Raviv will act as head ... Corp.,s commitment to providing the most secure solutions for the ... co-founded Layer 7 Technologies, a provider of security and management ...
Breaking Biology News(10 mins):Worldwide Capacitive Fingerprint Sensors Patent Landscape Market Report 2015-2020 - Main IP Holders include Seiko Epson, AuthenTec, Sony and STMicroelectronics 2Natural Language Processing Market by Type (Rule-Based, Statistical, and Hybrid), Technologies (Recognition, IVR, OCR, Pattern & Image Recognition) - Worldwide Forecast to 2020 2HYPR Corp. Expands Biometric Authentication Team with Enterprise All Stars 2HYPR Corp. Expands Biometric Authentication Team with Enterprise All Stars 3
... Americans may not be getting enough calcium in their ... 2011 issue of the Journal of the American Dietetic ... calcium intake in the US population because both dietary and ... to accompanying patterns in energy intake. "Calcium plays a ...
... urban communities, less than 1 in 100 inhabitants died from ... 9 out of 10 died. An important explanation for the ... decades before the Spanish flu came. Those living in urban ... protected against illness and death in 1918 than those living ...
... detecting the early stages of a major cause of failure ... and perhaps avoid additional surgery. More than 1.5 million total ... success rate is 90 per cent, almost 10 per cent ... the ACS journal Molecular Pharmaceutics . Dong Wang ...
Cached Biology News:Americans still may not be getting enough calcium 2Americans still may not be getting enough calcium 3Large differences in mortality between urban and isolated rural areas 2Large differences in mortality between urban and isolated rural areas 3
(Date:7/27/2015)... FRANKLIN, Tenn. , July 27, 2015 ... of health care services and one of the ... announced that its parent company and sole stockholder, ... with Medical Properties Trust, Inc. ("MPT") (NYSE: ... million in cash.  The transaction is expected to be ...
(Date:7/27/2015)... ... July 27, 2015 , ... This is a professional and ... basic overview of the industry including definitions, classifications, applications and industry chain structure. ... competitive landscape analysis, and key regions development status. Development policies and plans are ...
(Date:7/27/2015)... ... July 27, 2015 , ... Brady (NYSE:BRC), a ... 3 Ways to GHS Labels . This video provides useful information on ... (GHS) by effectively labeling chemical containers. , “With the fourth and final deadline ...
(Date:7/27/2015)... 27, 2015 Research presented at the 2015 ... on the studies that led to a fingerprick Ebola ... this disease to receive approval from the World Health ... Ebola,s grip on West Africa ... healthcare workers to isolate and treat these patients much ...
Breaking Biology Technology:Capella Healthcare Announces Agreement With Medical Properties Trust, Inc. 2Capella Healthcare Announces Agreement With Medical Properties Trust, Inc. 3Capella Healthcare Announces Agreement With Medical Properties Trust, Inc. 4Capella Healthcare Announces Agreement With Medical Properties Trust, Inc. 52015 Biophotonics Market Global Research 22015 Biophotonics Market Global Research 3Brady Releases “3 Roads to GHS Labels” Video 2Rapid Ebola Test Could Play Key Role in Efforts to End Lingering Outbreak 2Rapid Ebola Test Could Play Key Role in Efforts to End Lingering Outbreak 3
... Calif., Feb. 4 Arryx, Inc.,announced the addition ... Holographic Optical Trapping ("HOT") product line. The HOTkit,Complete ... events, and now, through the power of light, ... The HOTkit Complete was unveiled February 4 ...
... HORSHAM, Pa., Feb. 4 Centocor, Inc. announced ... (CNTO 1275),has been accepted for review by the ... of adult patients with chronic moderate to severe ... with a novel,mechanism of action that targets the ...
... HAVEN, Conn., Feb. 4 VION,PHARMACEUTICALS, INC. (Nasdaq: ... the Company,s senior management team as Vice President,Medical., ... pleased,to have Bill Hahne joining Vion in medical affairs. ... will be extremely useful to our,efforts to file a ...
Cached Biology Technology:Arryx Launches HOTkit(TM) Complete for Dynamic, Scientific Manipulation of Microscopic Elements 2Arryx Launches HOTkit(TM) Complete for Dynamic, Scientific Manipulation of Microscopic Elements 3Centocor Announces Ustekinumab Biologic License Application Accepted for Filing by FDA 2Centocor Announces Ustekinumab Biologic License Application Accepted for Filing by FDA 3Vion Pharmaceuticals Adds William Hahne, M.D. to Senior Management Team 2Vion Pharmaceuticals Adds William Hahne, M.D. to Senior Management Team 3
Human VEGF R3/Flt-4 Phycoerythrin MAb (Clone 54733)...
Human Legumain Affinity Purified Polyclonal Ab...
Human Cystatin F MAb (Clone 292103)...
... Ac-DEVD-CHO is an ... activity. The concentration of ... caspase activity must be ... system. Ten micromolar inhibitor ...
Biology Products: