Navigation Links
Glowing beacons reveal hidden order in dynamical systems
Date:10/19/2011

e measurement of the same variable on a collection of particles provided the system considered is in a state of equilibrium. However, as Krger points out, "although diffusive processes have been investigated for the past 150 years, the principle of ergodicity has not yet been experimentally verified." This is because it has so far been possible to quantify diffusive processes only by means of ensemble measurements i.e. measurements of many particles simultaneously. One of the most informative methods for this purpose is pulsed-field gradient nuclear magnetic resonance (PFG-NMR), a technique for which Krger and his group are well known. The actual trajectory of a single particle, on the other hand, could not be observed directly. "With the development of single-molecule spectroscopy and single-molecule microscopy, we can now follow the trajectories and therefore monitor the diffusion behavior of single molecules," Bruchle explains. Optical tracking methods visualize molecules on the basis of their fluorescence, making it possible for their positions to be localized and monitored with a precision of a few nanometers.

This still leaves one problem to be solved - successful application of the two methods requires very different, indeed apparently conflicting, conditions. NMR measurements need high concentrations of molecules with large diffusion coefficients, while single-molecule spectroscopy works best with extremely dilute solutions of species with small diffusion coefficients. By using particular organic dyes with high fluorescence yields in combination with porous silicate glasses containing networks of nanometer-sized channels in which the dye molecules can diffuse, the researchers were able to create conditions that were compatible with both methods. This experimental set-up allowed them to perform single-molecule and ensemble measurements on the same system.

When the two teams compared their data, they found that the diffusion coefficients
'/>"/>

Contact: Dr. Kathrin Bilgeri
kathrin.bilgeri@lmu.de
49-892-180-6938
Ludwig-Maximilians-Universitt Mnchen
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Glowing hands in the waiting room improves kids handwashing
2. TF beacons may light path to new cancer tests and drugs
3. Researchers use nanoparticles as destructive beacons to zap tumors
4. From tropics to poles: Study reveals diversity of life in soils
5. Genetic study of cave millipedes reveals isolated populations and ancient divergence between species
6. Genomic sequence and comparison of 2 macaques reveal new insights into biomedical research
7. Study reveals new role for RNA interference during chromosomal replication
8. Contamination of UK mobile phones and hands revealed
9. Tiny fossil fragment reveals giant-but-ugly-truth
10. Australias endangered bettong reveals how weather effects species distribution
11. University of California Santa Barbara study reveals how gas, temperature controlled bacterial response to Deepwater Horizon spill
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/3/2015)... , March 3, 2015 Cryoport, ... of advanced cryogenic logistics solutions for the ... stem cells, cell lines, clinical research organizations, ... today announced the expansion of its relationship ... ("Fred Hutch") Clinical Research Division with ...
(Date:3/2/2015)... Calif. , March 2, 2015 ... leading developer of human interface solutions, today announced ... that is designed to enable rapid and secure ... ID™ module for gaming is a turnkey solution ... the ability to quickly integrate fingerprint ID solutions ...
(Date:3/2/2015)... Ala. , March 2, 2015  Businesses ... processing. Data protection company Tharon Rankins Enterprises has ... that provides an ultra-safe way for businesses to ... their financial transactions. Beconux is ... Tharon Rankins Enterprises. Functioning similarly to an ATM ...
Breaking Biology News(10 mins):Cryoport, Inc. Expands Support of Fred Hutchinson Cancer Research Center's Clinical Research Division 2Cryoport, Inc. Expands Support of Fred Hutchinson Cancer Research Center's Clinical Research Division 3Synaptics Unveils New Fingerprint ID Solution for Gamers 2Synaptics Unveils New Fingerprint ID Solution for Gamers 3Personal Data Protection Company Launches New Product 2
... the prospect of using nanoparticles in biomedical applications and ... of the miniscule materials. Scientists at the University of ... kinds of nanoparticles damage cell membranes—enough to cause cell ... prevented. , "If you're inventing these sorts of materials, ...
... (Ed : testosterone isn't a protein, it's a ... allows it to function properly. Now Stanford University scientists ... when a protein molecule attached to a gold nanoparticle ... the same principle as ordinary pH tests that measure ...
... and maintenance of human embryonic stem cells in the ... University of California, San Diego (UCSD) School of Medicine ... Published in the April 2005 issue of the journal ... enriched by a human protein called activin A are ...
Cached Biology News:Probing The Promise And Perils Of Nanoparticles 2Probing The Promise And Perils Of Nanoparticles 3Scientists develop new color-coded test for protein folding 2UCSD researchers maintain stem cells without contaminated animal feeder layers 2
(Date:3/3/2015)... SAN DIEGO and TORONTO, March 3, 2015 /PRNewswire/ - ... company developing new therapeutics and molecular diagnostics that target ... for the quarter and seventh-month period ended December 31, ... changed its fiscal year end from May 31 to ... periods we are reporting today are for the quarter ...
(Date:3/3/2015)... -- Halozyme Therapeutics, Inc. (NASDAQ: HALO ) will be ... Miami, FL on March 10, 2015 at ... Chief Financial Officer, will provide a corporate overview. ... Halozyme,s corporate website at www.halozyme.com , and a recording ... To access the live webcast, please log on to Halozyme,s ...
(Date:3/3/2015)... NASA astronaut Scott Kelly , who is making final ... living and working on the International Space Station, will be ... EDT Monday, March 9. Kelly will participate from ... weeks of his training. The interviews will be preceded at ... mission training and previous spaceflights. To schedule an ...
(Date:3/3/2015)... LEXINGTON, Ky. (PRWEB) March 03, 2015 ... aligning their schedules for one event: the Alltech REBELation ... USA, from May 17-20. Now in its 31st year, ... people from 70 countries, and the opportunity to join ... week, March 7 at 11:59 p.m. EST, at which ...
Breaking Biology Technology:Aptose Biosciences reports results for the quarter and seven months ended December 31, 2014 2Aptose Biosciences reports results for the quarter and seven months ended December 31, 2014 3Aptose Biosciences reports results for the quarter and seven months ended December 31, 2014 4Aptose Biosciences reports results for the quarter and seven months ended December 31, 2014 5Aptose Biosciences reports results for the quarter and seven months ended December 31, 2014 6Aptose Biosciences reports results for the quarter and seven months ended December 31, 2014 7Aptose Biosciences reports results for the quarter and seven months ended December 31, 2014 8Aptose Biosciences reports results for the quarter and seven months ended December 31, 2014 9Aptose Biosciences reports results for the quarter and seven months ended December 31, 2014 10Aptose Biosciences reports results for the quarter and seven months ended December 31, 2014 11Aptose Biosciences reports results for the quarter and seven months ended December 31, 2014 12Halozyme Therapeutics To Present At The Barclays 2015 Global Healthcare Conference 2NASA Astronaut Scott Kelly Available for Interviews before One-Year Space Station Mission 2World-renowned Leaders, Authors and Businesspeople Join the Alltech REBELation 2World-renowned Leaders, Authors and Businesspeople Join the Alltech REBELation 3World-renowned Leaders, Authors and Businesspeople Join the Alltech REBELation 4
... now available for Robocycler 96 temperature,cyclers ... ,Jason Capodanno Michael Rahilly ,Stratagene Cloning Systems, Inc. ... for RoboCycler , 96 temperature cyclers, ... Assembly for RoboCycler 96 cyclers is supplied,with a software ...
... robust, high-fidelity PCR,amplification , Holly Hogrefe Brad ... Janice Cline Frances Bai Jeff Amberg ... release of pfuturbo DNA polymerase,* , ,an improved version ... polymerase is a blend of cloned Pfu DNA,polymerase and ...
... , Novel Herculase Hotstart DNA polymerase results in greater ... , Michael Borns Brad Scott ... Stratagenes Herculase , ... enzyme for difficult PCR applications, particularly those involving long, , ...
Cached Biology Technology:Oil-Free PCR Using the Hot Top Assembly 2Oil-Free PCR Using the Hot Top Assembly 3Oil-Free PCR Using the Hot Top Assembly 4Oil-Free PCR Using the Hot Top Assembly 5Oil-Free PCR Using the Hot Top Assembly 6Oil-Free PCR Using the Hot Top Assembly 7Novel PCR Enhancing Factor Improves Performance of Pfu DNA Polymerase 2Novel PCR Enhancing Factor Improves Performance of Pfu DNA Polymerase 3Novel PCR Enhancing Factor Improves Performance of Pfu DNA Polymerase 4Novel PCR Enhancing Factor Improves Performance of Pfu DNA Polymerase 5Novel PCR Enhancing Factor Improves Performance of Pfu DNA Polymerase 6Novel PCR Enhancing Factor Improves Performance of Pfu DNA Polymerase 7Novel PCR Enhancing Factor Improves Performance of Pfu DNA Polymerase 8Novel PCR Enhancing Factor Improves Performance of Pfu DNA Polymerase 9Novel PCR Enhancing Factor Improves Performance of Pfu DNA Polymerase 10Novel PCR Enhancing Factor Improves Performance of Pfu DNA Polymerase 11The Best Enzyme for the Toughest PCR Challenges Improved with New Hot-Start Feature 2The Best Enzyme for the Toughest PCR Challenges Improved with New Hot-Start Feature 3
... On-Demand Cytometry The Guava ... blue laser based multiparameter cytometer with built-in ... you can screen plates of cells and ... of manipulating multiple tubes or having the ...
... cDNA sequencing and finishing services are ... can perform large-scale 5' screening or ... Our considerable experience with large-scale genome ... Agencourt an ideal cDNA outsourcing solution. ...
Shotgun library construction and high-throughput DNA sequencing of microbial genomes, BACs, adenoviruses, phosmids and cosmids. LIMS tracking utilizing Geospiza's Finch system....
... antibody to human XAB2 (amino terminus) ... through its interaction with XPA. Immunoprecipitation experiments ... XAB2 interacts with the transcription-coupled repair-specific proteins ... RNA polymerase II. Microinjection experiments with XAB2 ...
Biology Products: