Navigation Links
When molecules leave tire tracks
Date:2/18/2010

nvisaged application. However, the optimization of the molecular adlayers depends largely on a trial-and-error approach, and is therefore complicated and time-consuming.

To develop the new molecular-interaction site model, Dr. Herrmann's group collaborated with Priv. Doz. Dr. Thomas Franosch und Professor Erwin Frey within the Cluster of Excellence "Nanosystems Initiative Munich" (NIM). The problem was tackled using an approach from statistical physics known as Monte Carlo method, which allows one to conduct a detailed computer simulation on the statistics of molecular interactions. The structural motifs so generated were compared with experimental high-resolution images of molecular patterns obtained by STM. Marta Balbs Gambra, a doctoral student, began each simulation with a mathematical representation of a collection of hundreds of randomly oriented particles of defined conformation. These schematic molecules were then perturbed by computationally adding energy, causing the population to adopt a new configuration.

Using this simulation strategy, one can generate a greater variety of patterns than are found naturally, and many of these corresponded closely to the real molecular patterns revealed by STM. "In one case we actually predicted a pattern that was only later verified with STM", reports doctoral student Carsten Rohr. According to the laws of thermodynamics, physical systems tend to adopt the state with the most favourable (i.e. lowest) energy. Experimental tests showed that different molecular configurations interconvert until an arrangement predominates that is reminiscent of tyre tracks. And indeed, the Monte Carlo approach had predicted that this arrangement corresponds to the state with the lowest energy.

"In the end, we were able to show that the molecular geometry and a few salient features encode the structural motifs observed", explains theorist Franosch. "We plan to extend the approach to other types of surface symmetr
'/>"/>

Contact: Dr. Bianca Hermann
b.hermann@cens.de
49-892-891-4258
Ludwig-Maximilians-Universitt Mnchen
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Clemson scientists shed light on molecules in living cells
2. New molecules discovered that block cancer cells from modifying cell DNA
3. Curry-derived molecules might be too spicy for colorectal cancers
4. New book presents methods to poke and prod individual molecules
5. Liquid crystal phases of tiny DNA molecules point up new scenario for first life on Earth
6. Synthetic molecules may be less expensive alternative to therapeutic antibodies, researchers find
7. Fast AFM probes measure multiple properties of biomolecules or materials simultaneously
8. Two suppressor molecules affect 70 genes in leukemia
9. Argonne scientists use lasers to align molecules
10. Researchers observe spontaneous ratcheting of single ribosome molecules
11. Nanoglassblowing seen as boon to study of individual molecules
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/10/2014)... SAN DIEGO , Dec. 9, 2014 ... and collaboration catalyst that provides the connective tissue that ... by enabling them to easily share client-level information; earned ... Foundation to expand to organizations serving seniors aging in ... San Diego" partner on December 11 th 4-6p. ...
(Date:12/4/2014)... 3, 2014  Crossmatch™, a leading provider of ... DigitalPersona ® Pro Enterprise software and U.are.U ... throughout First Bank branch locations in ... and Virginia. First Bank, a progressive community ... North Carolina , selected the Crossmatch biometrics-based ...
(Date:11/21/2014)... Nov. 20, 2014 Strict laws against distracted ... piloting the North American and European automotive sector towards ... gesture recognition systems that are intuitive and able to ... the industry. New analysis from Frost ... Market in Europe and ...
Breaking Biology News(10 mins):Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 2Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 3Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 4First Bank Partners with Crossmatch to Increase Log In Security 2First Bank Partners with Crossmatch to Increase Log In Security 3Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 2Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 3Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 4
... SALT LAKE CITYResearchers have discovered two enzymes that, when ... cancer. Manipulating these enzymes genetically might lead to targeted ... tumors. "We could conceivably reactivate a completely normal ... could prevent the growth of a tumor if reactivated," ...
... crimefighter who protected the innocent from pirates, hijackers and ... its costumed namesake, this electromagnetic phantoma carbon and polymer ... the National Institute of Standards and Technology (NIST) for ... The NIST phantom serves as a mannequin in a ...
... Researchers at The University of Texas School of Public Health ... of community-acquired antibiotic-resistant Staph ylococcus aureus ... (PVL). The Panton Valentine leukocidin is made ... is typically produced by community-acquired methicillin-resistant S. aureus ...
Cached Biology News:Newly found enzymes may play early role in cancer 2Electromagnetic phantom exorcises specters of metal detector tests 2UT Public Health researchers find link to severe Staph infections 2
(Date:12/22/2014)... 2014 /PRNewswire/ - RepliCel Life Sciences Inc. (OTCQB: REPCF) ... on the development of autologous cell therapies, announced today ... of Calgary in conjunction with co-authors from Kyoto University ... the company,s ongoing clinical research using dermal sheath cup ... The paper entitled " Hair Follicle Dermal ...
(Date:12/22/2014)... Dec. 22, 2014 GenomeDx Biosciences today announced ... Cancer Classifier, a genomic test for prostate cancer, was ... men managed by radical prostatectomy without adjuvant therapy. Although ... relatively uncommon, using tumor genomics to identify these men ... is an important advance. The study has been ...
(Date:12/22/2014)... 2014 The American Journal ... original research, reviews and editorials addressing developments and ... today published a provocative article exploring the role ... and potential treatment of prostate cancer. , ... proposes the possibility that there could be a ...
(Date:12/22/2014)... (PRWEB) December 22, 2014 Fertility Associates ... Donor Egg Bank USA , a network of more ... Through this partnership, patients have fast access to a ... vitro fertilization, IVF . Fertility Associates of Memphis is ... this fertility treatment option. , Dr. William Kutteh ...
Breaking Biology Technology:Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 2Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 3Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 4Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 5Study Published in European Urology Shows that the Decipher Prostate Cancer Classifier is Predictive of Rapid Metastasis in High-Risk Men who have had Prostate Surgery 2Study Published in European Urology Shows that the Decipher Prostate Cancer Classifier is Predictive of Rapid Metastasis in High-Risk Men who have had Prostate Surgery 3Prostate Cancer Experts Dissect the Role of Follicle-stimulating Hormone in the Development, Progression and Potential Treatment of Prostate Cancer 2Prostate Cancer Experts Dissect the Role of Follicle-stimulating Hormone in the Development, Progression and Potential Treatment of Prostate Cancer 3Prostate Cancer Experts Dissect the Role of Follicle-stimulating Hormone in the Development, Progression and Potential Treatment of Prostate Cancer 4Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 2Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 3
... 1, 2012 Unigene Laboratories, Inc. (OTCBB: ... Drug Delivery Partnerships™ ("DDP") Innovation Award in the Industry ... advances in the oral delivery of peptides.  ... and selected by conference attendees, including leading scientists, pharmaceutical ...
...  Generex Biotechnology Corporation (OTCBB: GNBT.OB) announced today that ... been awarded a Japanese Patent centering on its ... A number of products developed with this technology ... to secure the novel Antigen Express vaccine technology ...
... MINNEAPOLIS, February 1, 2012 Alchem International ... The sales and marketing office will be spearheaded by ... This office will cater to the rapidly growing demand ... their purified derivatives for the supplement, pharmaceutical and cosmetic ...
Cached Biology Technology:Unigene Receives 2012 Drug Delivery Partnerships Industry Achievement Award 2Unigene Receives 2012 Drug Delivery Partnerships Industry Achievement Award 3Unigene Receives 2012 Drug Delivery Partnerships Industry Achievement Award 4Unigene Receives 2012 Drug Delivery Partnerships Industry Achievement Award 5Generex Announces Patent Award for its Core Vaccine Technologies in Japan 2Generex Announces Patent Award for its Core Vaccine Technologies in Japan 3Generex Announces Patent Award for its Core Vaccine Technologies in Japan 4Alchem International Opens Sales and Marketing Office in the U.S. 2
...
Caliper offers a wide array of standard LabChip products designed to be used in combination with our AMS 90 and LabChip 3000 microfluidic platforms....
Experion StdSens chips are the microfluidic chips used to perform standard-sensitivity RNA analysis (nanogram levels) with the Experion automated electrophoresis system. Each chip has the capacity to...
...
Biology Products: