Navigation Links
Theory of crystal formation complete again
Date:2/19/2013

Exactly how a crystal forms from solution is a problem that has occupied scientists for decades. Researchers at Eindhoven University of Technology (TU/e), together with researchers from Germany and the USA, are now presenting the missing piece. This classical theory of crystal formation, which occurs widely in nature and in the chemical industry, was under fire for some years, but is saved now. The team made this breakthrough by detailed study of the crystallization of the mineral calcium phosphate the major component of our bones. The team published their findings yesterday in the online journal Nature Communications.

Crystallization is the formation of a solid ordered substance, such as happens when water freezes. In nature, crystals are mostly formed from ions which are dissolved in water, as for example in the formation of shells or bone. This involves the clustering of ions into increasingly large nuclei, until a crystal is formed when a certain size is reached. However, the details of this growth process have been the subject of discussion for many years.

According to the existing theories, it is individual ions that group together to form crystal nuclei. But in 2009 chemists led by dr. Nico Sommerdijk (TU/e) showed the presence of an intermediate step in the growth process of calcium carbonate crystals. The ions were thought to first form small clusters, which then grow into crystal nuclei. This finding, which was the cover story of Science, caused controversy because it appeared to contradict the classical crystallization theories which did not allow for such an intermediate step.

Now Sommerdijk is having second thoughts about his 2009 conclusions. At least, the answer now turns out to be more subtle than was thought at that time. Together with researchers from the Max Planck Institute in Germany and the Lawrence Berkeley National Laboratory in the USA, he looked more closely at the role of these so-called pre-nu
'/>"/>

Contact: Ivo Jongsma
i.l.a.jongsma@tue.nl
31-402-472-110
Eindhoven University of Technology
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Researcher uncovers potential cause, biomarker for autism and proposes study to investigate theory
2. New dinosaur fossil challenges bird evolution theory
3. Birdsong study pecks theory that music is uniquely human
4. Study turns parasite invasion theory on its head
5. Information theory helps unravel DNAs genetic code
6. Research: Modern Portfolio Theory optimizes conservation practices
7. Scientists uncover strong support for once-marginalized theory on Parkinsons disease
8. A University of Tennessee professors hypothesis may be game changer for evolutionary theory
9. Study jointly led by UCSB researcher supports theory of extraterrestrial impact
10. Chain reaction in the human immune system trapped in crystals
11. Patterning defect-free nanocrystal films with nanometer resolution
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Theory of crystal formation complete again
(Date:9/30/2014)... strawberries all have in common? Unlike most eukaryotic ... are diploid, these organisms are all polyploid, meaning they ... salmon have 3 and 4 sets of chromosomes, respectively, ... surprising, in fact most plant species are polyploid. Polyploidy, ... ago, but only recently, with the development of molecular ...
(Date:9/30/2014)... drinking water may increase the risk of stillbirth ... led by a Boston University School of Public ... journal Environmental Health , compared 1,091 PCE-exposed ... in Cape Cod, Ma., where water was contaminated ... by the installation of vinyl-lined asbestos cement pipes. ...
(Date:9/30/2014)... it comes to using marijuana, new research, involving mice ... Journal of Leukocyte Biology , suggests ... that you should. That,s because a team of Italian ... do serious long-term damage to the immune system. This ... diseases, such as multiple sclerosis, inflammatory bowel disease and ...
Breaking Biology News(10 mins):Gene doubling shapes the world: Instant speciation, biodiversity, and the root of our existence 2Gene doubling shapes the world: Instant speciation, biodiversity, and the root of our existence 3Gene doubling shapes the world: Instant speciation, biodiversity, and the root of our existence 4Contaminated water linked to pregnancy complications, BU study finds 2Adolescent exposure to thc may cause immune systems to go up in smoke 2
... structure mapping and thermodynamics is introduced for RNA pseudoknot ... the context of the biological folding direction (5 to ... information about the flexibility of the RNA. Mapping methods ... and add important 3D structural considerations. The model suggests ...
... National Institute of Allergy and Infectious Diseases (NIAID) of the ... Mary Woodard Lasker Award for Public Service for his role ... and biodefense. The award will be presented on Friday, September ... Dr. Fauci is honored for his role in helping develop ...
... America (ESA), in cooperation with the American Phytopathological ... Small Grain Insects, the latest in ESAs Insect ... the biology and management of arthropod pests and ... with expertise on specific pest groups have provided ...
Cached Biology News:Anthony S. Fauci awarded Lasker Award for Public Service 2Anthony S. Fauci awarded Lasker Award for Public Service 3Anthony S. Fauci awarded Lasker Award for Public Service 4Handbook of small grain insects available now 2
(Date:9/30/2014)... NEW YORK , Sept. 30, 2014 /PRNewswire/ ... used to kill nematodes. Nematodes are microscopic parasitic ... soil, water, and inside other plants and animals. ... high volatility or other properties promoting migration through ... contain more than 1,000 plant-parasitic nematodes. With more ...
(Date:9/30/2014)... 30, 2014 Proove Biosciences , ... excited to announce a new genetic test built upon ... Pain Perception Test will provide physicians with an ... pain tolerance levels are stratified between individuals. With this ... a person has a genetic predisposition that will affect ...
(Date:9/30/2014)... Sept. 30, 2014  RegeneRx Biopharmaceuticals, Inc. (OTC: ... it has received a Canadian Patent for Inhibition ... This patent includes claims using thymosin beta 4, ... peptides for these purposes.  The patent will expire ... Inc. ( www.regenerx.com ) RegeneRx ...
(Date:9/30/2014)... Fast, semi-automatic creation of ... documents ChemAxon , a leader ... for life science research, launches ChemCurator, an application ... from documents. Markush structures are essential ... and understanding Markush structures is a difficult and ...
Breaking Biology Technology:Nematicides Market by Types (Fumigants, Organophosphates, Carbamate and Bio-Nematicides), Applications (Agrochemicals, Industrial, and Others), and Geography (North America, Europe, Asia-Pacific & ROW) - Global Trends & Forecasts to 2019 2Proove Biosciences is Now Offering the Proove Pain Perception Genetic Test to Help Physicians Assess Patient Pain Tolerance Levels 2Proove Biosciences is Now Offering the Proove Pain Perception Genetic Test to Help Physicians Assess Patient Pain Tolerance Levels 3RegeneRx Receives Canadian Patent for Inhibition or Reversal of Skin Aging 2ChemAxon Introduces ChemCurator for Chemical Information Extraction and Markush Structure Creation 2
... Nov. 17 Doctors Research Group, Inc. announced today ... Food and Drug Administration (FDA) to market KRYPTONITE(TM) Bone ... a major advancement in treating cranial defects due to ... exotherm cement and bone void filler approved for cranioplasty ...
... , SAN FRANCISCO, Nov. 17 Merriman Curhan Ford Group, ... in PolyMedix Inc.,s (OTC Bulletin Board: PYMX) $20.7 million registered ... priced at $1.00 per unit, consist of one share of ... 0.30 of a share of PolyMedix common stock at $1.25 ...
... TSX symbol: SBS , CALGARY, Nov. 17 /PRNewswire-FirstCall/ - ... Court of Queen,s Bench of Alberta has issued an ... of the securityholders of SemBioSys, at which securityholders will ... (the "Arrangement") involving the corporate reorganization with Cathedral Energy ...
Cached Biology Technology:Doctors Research Group Receives FDA Clearance for U.S. Distribution of KRYPTONITE(TM) Bone Cement 2Merriman Curhan Ford Acted as Lead Placement Agent in PolyMedix's $20.7 Million Equity Financing 2SemBioSys securityholder vote to be held December 18, 2009 with a record date of November 16, 2009 2SemBioSys securityholder vote to be held December 18, 2009 with a record date of November 16, 2009 3