Navigation Links
Tying atomic threads in knots may produce material benefits
Date:11/8/2011

A new generation of lighter, stronger plastics could be produced using an intricate chemical process devised by scientists.

Chemists working on the nanoscale 80,000 times smaller than a hair's breadth have managed to tie molecules into complex knots that could give materials exceptional versatility.

By weaving threads of atoms into the shape of five-point stars, researchers at the University of Edinburgh have created the building blocks of materials that could be supremely flexible and shock absorbent.

They hope that the new molecules known as pentafoil knots will mimic the characteristics of complex knots found in proteins and DNA, which help to make some substances elastic.

In natural rubber, for example, 85 per cent of its elasticity is caused by knot-like entanglements in its molecule chain.

Creating knotted structures in the laboratory should make it easier for scientists to observe and understand exactly how entanglements influence a material's properties.

And being able to produce materials with a specific number of well-defined knots, rather than the random mixture that occurs in today's plastics and polymers, scientists could exercise greater control when designing materials.

The research, funded by the Engineering and Physical Sciences Research Council, is reported in Nature Chemistry journal.

The Edinburgh team, working with researchers from the University of Jyvskyl in Finland, is the first to create a knot with five crossing points.

The pentafoil, also known as a Solomon's seal knot, has symbolic significance in many cultures and is the central emblem on the flags of Morocco and Ethiopia.

Deliberately tying molecules into knots so that its properties can be studied is extremely difficult. Until now, only the simplest type of knot the trefoil, with three crossing points has been created by scientists.

Remarkably, the thread of atoms that
'/>"/>

Contact: Catriona Kelly
Catriona.Kelly@ed.ac.uk
44-131-651-4401
University of Edinburgh
Source:Eurekalert

Page: 1 2

Related biology technology :

1. Linden Enters Anatomic Pathology Sector Through Investment in Strata Pathology Services, Inc.
2. Lehigh University leads Department of Defense MURI grant for atomic-scale interphase research
3. Seeing an atomic thickness
4. Getting the point: Real-time monitoring of atomic-microscope probes adjusts for wear
5. Probing atomic chicken wire
6. 3-D nanoparticle in atomic resolution
7. Manufacturing made to measure atomic-scale electrodes
8. Unprecedented look at oxide interfaces reveals unexpected structures on atomic scale
9. Depth charge: Using atomic force microscopy to study subsurface structures
10. Physicists capture first images of atomic spin
11. A little less force: Making atomic force microscopy work for cells
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/27/2014)... plants survive impact by the huge amounts of ... this energy for photosynthesis. The hypothesis is that ... dissipate the energy throughout the entire protein molecule ... have now managed to successfully ,film, this process. ... proteins which play a role in photosynthesis and ...
(Date:8/27/2014)... , Aug. 27, 2014 ... the "Global Lactic Acid  (Biodegradable Polymer, Food ... Trends & Forecasts to 2019" report to ... simplest hydroxyl-carboxylic acid with an asymmetrical carbon atom. ... the biodegradable polymer, food and beverage, personal care ...
(Date:8/27/2014)... “We are honored to be named ... Thangaraj, CEO of Radiant Sage. “We are offering truly ... imaging corelab market to a different level. We ... to efficiently and effectively manage the massive amounts of ... analyzed and read by trained physicians. Being recognized by ...
(Date:8/27/2014)... 27, 2014 Flagship Biosciences LLC, a ... to the pharmaceutical and medical device industries, has announced ... fast growing company has consolidated its histology and tissue ... to Westminster, CO, just north of Denver. The ... W. 103rd Ave., Suite 100, Westminster, CO 80021 , ...
Breaking Biology Technology:DTU researchers film protein quake for the first time 2Global Lactic Acid (Biodegradable Polymer, Food & Beverage, Personal Care & Pharmaceutical) Market - Trends & Forecasts to 2019 2Radiant Sage Named to CIOReview List of 100 Most Promising Technology Companies 2Flagship Biosciences Announces Relocation and Expansion 2
... BRIDGEWATER, N.J., April 3, 2012 Hamamatsu Corporation ... previously distributed through third-party dealers, will now be ... 2012, the company is responsible for the sales, ... NanoZoomer product line for new customers throughout North ...
... PHILADELPHIA, April 2, 2012 Echo Therapeutics, Inc. (Nasdaq: ... Symphony® tCGM System as a non-invasive, wireless, transdermal continuous ... transdermal drug delivery, is pleased to announce that its ... at the 72nd Scientific Sessions of the American Diabetes ...
... cellphone you can wrap around your wrist? Such a thing ... James Tour, whose lab has developed transparent, flexible memories using ... today in a talk at the national meeting and exposition ... new type of memory could combine with the likes of ...
Cached Biology Technology:Hamamatsu Corporation Announces Exclusive Distribution of Its NanoZoomer Whole-Slide Scanners 2Echo Therapeutics to Present Positive Clinical Trial Results at the 72nd Scientific Sessions of the American Diabetes Association 2Echo Therapeutics to Present Positive Clinical Trial Results at the 72nd Scientific Sessions of the American Diabetes Association 3
(Date:8/27/2014)... doses of the HIV drug maraviroc, a new study ... before the drug was licensed in 2007, included mostly ... to removing maraviroc from the body. The current study ... including nearly half of African-Americans end up ... who lack the protein even when given the same ...
(Date:8/27/2014)... brain of mice, scientists have altered the emotional ... Howard Hughes Medical Institute investigator Susumu Tonegawa at ... the connections between the part of the brain ... the part of the brain that stores the ... , Altering those connections can transform a negative ...
(Date:8/27/2014)... listen carefully to someone, the first thing we do ... stop moving altogether. This strategy helps us hear better ... , This interplay between movement and hearing also has ... has long suggested that the brain,s motor cortex, which ... rise to our conscious perception of sound. , A ...
Breaking Biology News(10 mins):Dosage of HIV drug may be ineffective for half of African-Americans 2Researchers change the emotional association of memories 2Researchers change the emotional association of memories 3Researchers change the emotional association of memories 4Stop and listen: Study shows how movement affects hearing 2Stop and listen: Study shows how movement affects hearing 3
... are living longer despite cellular defects, a discovery that ... and how doctors could one day limit or reverse ... new University of Colorado at Boulder study. In ... the metabolic state of genetically engineered lab worms called ...
... University in St. Louis are finding common ground between ... embryonic development. Larry A.Taber, Ph.D., the Dennis ... Bayly, Ph.D., Hughes Professor of Mechanical Engineering, are examining ... of the brains surface, or cortex, which gives the ...
... increase in two immune system proteins essential for inflammation to ... that might accelerate cardiovascular disease. The same process ... the elderly. The findings also suggest that chronic ... that can lead to the buildup of plaques clogging coronary ...
Cached Biology News:CU-Boulder worm study sheds light on human aging, inherited diseases 2CU-Boulder worm study sheds light on human aging, inherited diseases 3Engineers study brain folding in higher mammals 2Engineers study brain folding in higher mammals 3Depression, aging, and proteins made by a virus may all play role in heart disease 2Depression, aging, and proteins made by a virus may all play role in heart disease 3
... System - dCTP with CyScribe GFX ... generation and purification of Cy3- and ... for complete cDNA labeling and purification.Flexible ... for performing labeling reactions with either ...
Canine Serum...
UV-NIR light source for USB2000, HR4000, HR2000+...
... EPS 1001 Power Supply, 1. ... maximum.Constant voltage, constant current, and constant ... read-outs for precision and reproducibility.Stores and ... ultrathin flatbed gels on Multiphor ...
Biology Products: