Navigation Links
Getting the point: Real-time monitoring of atomic-microscope probes adjusts for wear
Date:3/31/2011

Scientists at the National Institute of Standards and Technology (NIST) have developed a way to measure the wear and degradation of the microscopic probes used to study nanoscale structures in situ and as it's happening. Their technique can both dramatically speed up and improve the accuracy of the most precise and delicate nanoscale measurements done with atomic force microscopy (AFM).

If you're trying to measure the contours of a surface with a ruler that's crumbling away as you work, then you at least need to know how fast and to what extent it is being worn away during the measurement.

This has been the challenge for researchers and manufacturers trying to create images of the surfaces of nanomaterials and nanostructures. Taking a photo is impossible at such small scales, so researchers use atomic force microscopes. Think of a device like a phonograph needle being used, on a nanoscale, to measure the peaks and valleys as it's dragged back and forth across a surface. These devices are used extensively in nanoscale imaging to measure the contours of nanostructures, but the AFM tips are so small that they tend to wear down as they traverse the surface being measured.

Today, most researchers stop the measurement to "take a picture" of the tip with an electron microscope, a time-consuming method prone to inaccuracies.

NIST materials engineer Jason Killgore has developed a method for measuring in real time the extent to which AFM tips wear down. Killgore measures the resonant frequency of the AFM sensor tip, a natural vibration rate like that of a tuning fork, while the instrument is in use. Because changes to the size and shape of the tip affect its resonant frequency, he is able to measure the size of the AFM's tip as it worksin increments of a tenth of a nanometer, essentially atomic scale resolution. The technique, called contact resonance force microscopy, is described in a paper recently published in the journal Small
'/>"/>

Contact: James Burrus
james.burrus@nist.gov
303-497-4789
National Institute of Standards and Technology (NIST)
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. Getting bubbles out of fuel pumps
2. Iowa State, Ames Laboratory scientists advance the understanding of the big getting bigger
3. Nanoparticles double their chances of getting into sticky situations
4. Getting Ready Corporation and Winston Laboratories, Inc. Announce Completion of Merger
5. DNA engine observed in real-time traveling along base pair track
6. Competitions Facilitate Real-time Science
7. METTLER TOLEDO and ThalesNano Bring Real-time Reaction Monitoring to Flow Synthesis
8. Real Time to Manufacturing Using Real-Time In Situ FTIR Analytics as a Process Analytical Technology (PAT) Tool
9. WaferGen to Launch Human MicroRNA Panel for Gene-Expression Profiling of 885 MicroRNA for Its Service Using the SmartChip(TM) Real-Time PCR System
10. WaferGen Announces that University of Texas Southwestern Medical Center Demonstrates Utility of New SmartChip(TM) Nano-Dispenser with WaferGens SmartChip(TM) High-throughput Real-Time PCR System
11. Development of Batch and Continuous Chemical Processes Using Real-Time In Situ FTIR Analytics as a Process Analytical Technology (PAT) Tool
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Getting the point: Real-time monitoring of atomic-microscope probes adjusts for wear
(Date:7/27/2015)... UK (PRWEB) , ... July 27, 2015 , ... Production ... growth over the past few years in the EU. For instance, it surpassed the ... the EUR 92 million mark in 2010. Germany is a major producer, while Italy ...
(Date:7/27/2015)...   Inocucor Technologies Inc ., the agriculture ... farmers, has received a notice of allowance from ... patent application to protect Inocucor consortia and unique ... yields on farms and in greenhouses. ... microbial consortium and its fermentation byproducts, which are ...
(Date:7/27/2015)... ... 27, 2015 , ... BlueInGreen® announced the addition of EnviroSales ... the world’s most efficient gas dissolution technology to all of Florida, excluding the ... industrial and municipal markets. With offices located in Sarasota, Sebring and Melbourne Beach, ...
(Date:7/27/2015)... , July 27, 2015 The ... announced the winners of its annual Klerman and ... by scientists who have been supported by NARSAD ... scientists to pursue innovative ideas in neurobiological and ... of concept for the early detection, treatment, prevention ...
Breaking Biology Technology:High Tenacity Filament Yarn of Viscose Rayon Consumption to Grow Swiftly in the EU, Forecasts BAC Reports in New Study Available at MarketPublishers.com 2Inocucor Technologies Receives Groundbreaking U.S. Patent for Proprietary Biological Processes that Stimulate Plant Growth 2Inocucor Technologies Receives Groundbreaking U.S. Patent for Proprietary Biological Processes that Stimulate Plant Growth 3BlueInGreen Brings Water Treatment Technology to Florida 2Brain & Behavior Research Foundation Names Winners of Klerman-Freedman Prizes for Exceptional Research 2Brain & Behavior Research Foundation Names Winners of Klerman-Freedman Prizes for Exceptional Research 3Brain & Behavior Research Foundation Names Winners of Klerman-Freedman Prizes for Exceptional Research 4Brain & Behavior Research Foundation Names Winners of Klerman-Freedman Prizes for Exceptional Research 5Brain & Behavior Research Foundation Names Winners of Klerman-Freedman Prizes for Exceptional Research 6
... Advocacy Groups Launch Joint Effort to Preserve Eyesight of,Millions At-Risk ... that eye exams are being,ignored by many aged over 40. ... the last year to have their eyes checked, even though,twice ... or early,death. The survey showed that awareness of glaucoma was ...
... CRVL ), a leading provider of workers, ... 150,000 facility and,provider locations to its national CorCare ... provider network additions are the,result of a new ... Petersburg, FL. With more than 5,500 hospitals ...
... Time-Saving, ATLANTA, Oct. 1 Harmonex ... a revolutionary software platform,designed to assess children, ... CliniCom(TM), an intuitive, computer assisted intake and ... settings, gathers information,directly from patients and their ...
Cached Biology Technology:International Survey Shows People Over Forty Ignore Risk of Blindness 2International Survey Shows People Over Forty Ignore Risk of Blindness 3International Survey Shows People Over Forty Ignore Risk of Blindness 4International Survey Shows People Over Forty Ignore Risk of Blindness 5CorVel Corporation Medical Provider Network Adds New Providers to Increase Savings and Improve Access to Care 2CorVel Corporation Medical Provider Network Adds New Providers to Increase Savings and Improve Access to Care 3Harmonex Introduces CliniCom(TM), a Breakthrough in Psychiatric Intake and Assessment Technology 2Harmonex Introduces CliniCom(TM), a Breakthrough in Psychiatric Intake and Assessment Technology 3
(Date:7/9/2015)... Calif. , July 9, 2015  Synaptics Inc. (NASDAQ: ... solutions, announced today that it will report financial results ... Thursday, July 30, 2015 after the close of market. ... analysts and investors at 2:00 p.m. PT (5:00 p.m. ... To participate on the live call, analysts ...
(Date:7/9/2015)... , July 9, 2015  Synaptics Inc. ... of human interface solutions, today announced a ... first fully hardware encapsulated fingerprint sensor and ... technology is literally off the grid, isolating ... matching within the fingerprint sensor to provide ...
(Date:7/8/2015)... DIEGO , July 8, 2015  Trovagene, ... cell-free molecular diagnostics, today announced the launch of ... the Company,s Precision Cancer Monitoring℠ (PCM) technology for ... receiving one or a combination of the novel ... Opdivo® (nivolumab), a PD-1 inhibitor. The 50-patient study ...
Breaking Biology News(10 mins):Synaptics to Report Fourth Quarter, Fiscal Year 2015 Results on July 30 2Synaptics Announces World's First Match-in-Sensor Fingerprint Authentication Technology 2Synaptics Announces World's First Match-in-Sensor Fingerprint Authentication Technology 3Trovagene Initiates Study to Monitor Response to Immunotherapy in Melanoma Patients Using its Precision Cancer Monitoring Platform 2Trovagene Initiates Study to Monitor Response to Immunotherapy in Melanoma Patients Using its Precision Cancer Monitoring Platform 3Trovagene Initiates Study to Monitor Response to Immunotherapy in Melanoma Patients Using its Precision Cancer Monitoring Platform 4
... a prevalent fungal pathogen that causes 10,000 deaths per ... antifungal drugs by duplicating a section of one of ... yeast present in 80 percent of humans, is usually ... oral and vaginal infections (candiasis or thrush) that are ...
... at the Stanford University School of Medicine have taken ... cells that could eventually be transplanted into living organisms. ... surgical resident Oscar Abilez, MD, and colleagues have successfully ... building blocks of blood vessels, after placing them in ...
... technique of distraction has been researched and successfully applied ... with certain medical procedures. The use of distraction is ... psychological element in the perception of pain, with the ... the perception of the pain. , Distraction techniques ...
Cached Biology News:U of M researchers discover genetic key to treating deadly fungal infections 2Stanford doctors advance in bid to turn mice stem cells into blood vessels 2Stanford doctors advance in bid to turn mice stem cells into blood vessels 3Virtual realities against pain 2
Sphingosine 1-phosphate receptor Edg-1...
Bag-1 (K-20)...
... atoms at the 3, 3', 4, and ... as an internal standard for the quantification ... LC-mass spectrometry. PGE2 is one of the ... one of the most widely investigated prostaglandins. ...
, Glycerol 30%...
Biology Products: