Navigation Links
ORNL microscopy yields first proof of ferroelectricity in simplest amino acid
Date:4/19/2012

OAK RIDGE, Tenn., April 19, 2012 The boundary between electronics and biology is blurring with the first detection by researchers at Department of Energy's Oak Ridge National Laboratory of ferroelectric properties in an amino acid called glycine.

A multi-institutional research team led by Andrei Kholkin of the University of Aveiro, Portugal, used a combination of experiments and modeling to identify and explain the presence of ferroelectricity, a property where materials switch their polarization when an electric field is applied, in the simplest known amino acidglycine.

"The discovery of ferroelectricity opens new pathways to novel classes of bioelectronic logic and memory devices, where polarization switching is used to record and retrieve information in the form of ferroelectric domains," said coauthor and senior scientist at ORNL's Center for Nanophase Materials Sciences (CNMS) Sergei Kalinin.

Although certain biological molecules like glycine are known to be piezoelectric, a phenomenon in which materials respond to pressure by producing electricity, ferroelectricity is relatively rare in the realm of biology. Thus, scientists are still unclear about the potential applications of ferroelectric biomaterials.

"This research helps paves the way toward building memory devices made of molecules that already exist in our bodies," Kholkin said.

For example, making use of the ability to switch polarization through tiny electric fields may help build nanorobots that can swim through human blood. Kalinin cautions that such nanotechnology is still a long way in the future.

"Clearly there is a very long road from studying electromechanical coupling on the molecular level to making a nanomotor that can flow through blood," Kalinin said. "But unless you have a way to make this motor and study it, there will be no second and third steps. Our method can offer an option for quantitative and reproducible study of this electromechanical conversion."

The study, published in Advanced Functional Materials, builds on previous research at ORNL's CNMS, where Kalinin and others are developing new tools such as the piezoresponse force microscopy used in the experimental study of glycine.

"It turns out that piezoresponse force microsopy is perfectly suited to observe the fine details in biological systems at the nanoscale," Kalinin said. "With this type of microscopy, you gain the capability to study electromechanical motion on the level of a single molecule or small number of molecular assemblies. This scale is exactly where interesting things can happen."

Kholkin's lab grew the crystalline samples of glycine that were studied by his team and by the ORNL microscopy group. In addition to the experimental measurements, the team's theorists verified the ferroelectricity with molecular dynamics simulations that explained the mechanisms behind the observed behavior.


'/>"/>

Contact: Morgan McCorkle
mccorkleml@ornl.gov
865-574-7308
DOE/Oak Ridge National Laboratory
Source:Eurekalert  

Related biology news :

1. Griffiths 3-D microscopy a research breakthrough
2. Research team achieves first 2-color STED microscopy of living cells
3. Polarized microscopy technique shows new details of how proteins are arranged
4. New microscopy method opens window on previously unseen cell features
5. Imaging in depth: 3-dimensional microscopy featured in Cold Spring Harbor Protocols
6. Faster CARS, less damage: NIST chemical microscopy shows potential for cell diagnostics
7. Boost for world-leading microscopy project
8. New microscopy technique reveals mechanics of blood cell membranes
9. New microscopy technique offers close-up, real-time view of cellular phenomena
10. NIH grant will boost electron microscopy at Brandeis
11. The sound of light: Innovative technology shatters the barriers of modern light microscopy
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
ORNL microscopy yields first proof of ferroelectricity in simplest amino acid
(Date:1/25/2016)... 25, 2016  Glencoe Software, the world-leading supplier of ... industries, will provide the data management solution OMERO Plus ... Photo - ... Phenotypic analysis measures the characteristics and ... comparisons between states such as health and disease, the ...
(Date:1/20/2016)... , Jan. 20, 2016   MedNet Solutions , ... entire spectrum of clinical research, is pleased to announce ... significant achievements are the result of the company,s laser ... iMedNet eClinical , it,s comprehensive, easy-to-use and highly ... --> Key MedNet growth achievements in 2015 ...
(Date:1/13/2016)... , January 13, 2016 /PRNewswire/ ... announced the addition of the  "India ... Estimation & Forecast (2015-2020)"  report ... http://www.researchandmarkets.com/research/7h6hnn/india_biometrics ) has announced the addition ... Identification Market - Estimation & Forecast ...
Breaking Biology News(10 mins):
(Date:2/11/2016)... , Feb. 11, 2016  Spectra BioPharma Selling ... (CSO) that provides biopharma companies the experience, expertise, ... and deploy outsourced sales teams. Created in concert ... addresses both the strategic and tactical needs of ... sales solutions through both personal and non-personal promotion. ...
(Date:2/11/2016)... BioInformant announces the February 2016 release of its ... and Technologies – Market Size, Segments, Trends, and Projections ... The first and only market research firm ... more than a decade of historical information on all ... type. This powerful 175 page global strategic report contains ...
(Date:2/10/2016)... WASHINGTON , February 10, 2016 Early-career ... , Peru , Uganda ... their life-enhancing work in health and nutrition   Indonesia ... Uganda and Yemen are ... sciences and epidemiology. They are also celebrated for mentoring young women scientists ...
(Date:2/10/2016)... (NYSE MKT: ISR), a medical technology company and innovator ... treatment of prostate, brain, lung, head and neck and ... second quarter and six months of fiscal 2016, which ... --> Revenue was $1.19 million for ... 31, 2015, a 12% increase compared to $1.07 million ...
Breaking Biology Technology: