HOME >> BIOLOGY >> NEWS
Yale scientists confirm how crystals form

New Haven, Conn. -- A team of researchers at Yale University is the first to devise a way to predict the microstructure of crystals as they form in materials, according to a report in the September issue of Applied Physics Letters.

Although there are theoretical models that predict grain size and ways to monitor the growth of individual crystals, this new method makes it possible to estimate grain size and therefore the properties of materials that are dependant on microstructure.

Researchers in many fields including materials science, geology, physical chemistry and biochemistry will now be able to tailor material properties that are sensitive to microstructure.

According to senior author Ainissa G. Ramirez, assistant professor of mechanical engineering, the Yale team monitored real-time images taken at two-second intervals while they heated crystallizing samples of nickel-titanium within a transmission electron microscope.

They directly determined the rate of crystal assembly (nucleation), and the rate that the crystals grew, by measuring the number of crystals and their change in size with time. Their results agree with the conventional Johnson-Mehl-Avrami-Kolmogorov method which only gives an overall crystallization rate, with the nucleation and growth rates coupled.

The novel contribution of this work is that the nucleation and growth rates are measured independently during crystallization and can be used to infer the grain size after crystallization is complete.

"We used the mathematics of crystallization in a new way," said Ramirez. "We found that our measured grain sizes and the mathematical predictions agreed over a broad range of temperatures. This method allows researchers to now explore the connection between structure and properties of different materials."


'"/>

Contact: Janet Rettig Emanuel
janet.emanuel@yale.edu
203-432-2157
Yale University
3-Nov-2005


Page: 1

Related biology news :

1. UK scientists working to help cut ID theft
2. Smithsonian scientists show differing patterns of rainforest biodiversity
3. Weizmann Institute scientists discover a control mechanism for metastasis
4. Cornell scientists link E. coli bacteria to Crohns disease
5. UCLA scientists produce functioning neurons from human embryonic stem cells
6. ASBMB taps 8 scientists and 1 politician for top awards
7. UF, French scientists seek test to detect gene doping in athletes
8. In a first, Einstein scientists discover the dynamics of transcription in living mammalian cells
9. Forsyth scientists gain new understanding of adult stem cell regulation
10. Nanotechnology helps scientists make bendy sensors for hydrogen vehicles
11. After a decades-long search, scientists identify new genetic risk factors for multiple sclerosis

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:7/10/2020)... ... ... Today CJ BIO announced the first in a series of Food Ingredient MasterClass ... is revolutionizing ingredient mixes, nutritional content and flavor profiles across a range of savory ... at11:00 AM (CDT) during SHIFT20, the virtual edition of the IFT Annual Meeting & ...
(Date:7/2/2020)... ... July 02, 2020 , ... Dutch ... the use of its revolutionary NEXTGENPCR endpoint thermocycler to test for SARS-CoV-2 ... The article, titled "Ultra-fast one-step RT-PCR protocol for the detection of SARS-CoV-2," ...
(Date:6/28/2020)... Switzerland (PRWEB) , ... June ... ... provider of enterprise software solutions for biopharmaceutical R&D, today announced that it ... company developing innovative, full-length multispecific antibodies (Multiclonics®), to support their translational and ...
Breaking Biology News(10 mins):
(Date:8/12/2020)... (PRWEB) , ... August 12, 2020 , ... ... Inc. (EMMA International), a global leader in FDA compliance consulting has been ... nation’s fastest-growing private companies. The list represents a unique look at the most ...
(Date:7/31/2020)... ... ... R3 Stem Cell International is now offering patients the opportunity to receive ... patients may choose which extremities they would like treated. , Several studies have shown ... At R3 International, umbilical cord tissue is obtained from a lab with a long ...
(Date:7/31/2020)... (PRWEB) , ... July 29, 2020 , ... ... and Catalent, the leading global provider of advanced delivery technologies, development, and manufacturing ... announced that they have entered into a strategic partnership whereby Catalent will provide ...
(Date:7/22/2020)... ... July 22, 2020 , ... Join experts from Reed Tech ... Regulatory Solutions, in a one hour live webinar on Thursday, August 13, ... China for drugs and medical devices. Specifically, for medical devices, the NMPA has departments ...
Breaking Biology Technology:
Cached News: