Navigation Links
Green photon beams more agile than optical tweezers
Date:9/18/2013

Romanian scientists have discovered a novel approach for the optical manipulation of macromolecules and biological cells. Their findings, published in EPJ B, stem from challenging the idea that visible light would induce no physical effect on them since it is not absorbed. Instead, Sorin Comorosan, working as a physicist at the National Institute for Physics and Nuclear Engineering based in Magurele, Romania, and as a biologist at the Fundeni Clinical Institute, Bucharest, Romania, and colleagues, had the idea to use green photon beams. With them, it is possible to perform optical manipulation of macrostructures, such as biological proteins, with greater precision than with optical tweezers made from focused laser beams.

The authors used what are known as high-density green photon beams (HDGP). These are capable of inducing a polarisation effect, separating the positive from the negative charges within complex macrostructures. As a result, the polarised structures interact with an external electromagnetic field and with one another. The authors experimented with long carbon chains, which represent the framework of biological macromolecules. They then used a range of physical techniques to reveal the locally induced molecular arrangements.

Comorosan and colleagues found that the effect of the beam leads to a type of matter called 'biological optical matter.' It includes newly organised material structures, such as molecular aggregates and micro-particles, and can feature new characteristics such as antioxidant properties. The authors realised that this approach covers a larger area than focused tweezers and is capable of organising so-called mesoscopic matterranging from the nano to the micrometric scale into a new 3D molecular architecture.

They then performed numerical calculations on a physical model they developed to compute the interacting force between polarisable bodies. Further study of the interaction of these polarised proteins with the body's unpolarised proteins could have far-reaching applications in immunology, genetics and epigenetics.


'/>"/>

Contact: Franziska Hornig
franziska.hornig@springer.com
49-622-148-78414
Springer
Source:Eurekalert

Related biology news :

1. A greener, more sustainable source of ingredients for widely used plastics
2. Sediment trapped behind dams makes them hot spots for greenhouse gas emissions
3. Deserts greening from rising CO2
4. Greenhouse gas likely altering ocean foodchain
5. Making hydrogenation greener
6. 21 percent of homes account for 50 percent of greenhouse gas emissions
7. Major rethink needed if chemical industry is to meet greenhouse gas targets
8. When green algae run out of air
9. Too green to be true? Researchers develop highly effective method for converting CO2 into methanol
10. Lab experiments question effectiveness of green coffee bean weight-loss supplements
11. Wood not so green a biofuel
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/30/2017)... 2017 Trends, opportunities and forecast in this ... technology (fingerprint, AFIS, iris recognition, facial recognition, hand geometry, ... end use industry (government and law enforcement, commercial and ... and others), and by region ( North America ... Asia Pacific , and the Rest of the ...
(Date:3/27/2017)... , March 27, 2017  Catholic Health ... and Management Systems Society (HIMSS) Analytics for achieving ... Adoption Model sm . In addition, CHS previously ... U.S. hospitals using an electronic medical record (EMR). ... its high level of EMR usage in an ...
(Date:3/23/2017)... March 23, 2017 The report "Gesture Recognition and Touchless ... and Geography - Global Forecast to 2022", published by MarketsandMarkets, the market is ... of 29.63% between 2017 and 2022. Continue Reading ... ... ...
Breaking Biology News(10 mins):
(Date:5/23/2017)... ... May 22, 2017 , ... ... a row in the Aragon Research Globe™ for Corporate Learning, 2017. , Aragon ... direction and market demand, and effectively perform against those strategies. NetDimensions’ ranking as ...
(Date:5/23/2017)... ... 2017 , ... Energetiq Technology, a world leader in high ... accommodate its rapid growth. , The renovations at the company’s headquarters in Woburn, ... areas. The expansion includes, a state-of-the-art engineering facility, and a second clean manufacturing ...
(Date:5/23/2017)... ... , ... Cambridge Semantics , the leading provider of Big Data management ... and Expo in Boston May 23-25 with a featured speaker and solution demos ... Lake is also a finalist for the Best of Show award. , James LaPointe, ...
(Date:5/22/2017)... ... 2017 , ... Baltimore biotech firm, PathSensors, announced that its ... developing and issuing recommendations to grow Maryland's biohealth industry and position the state ... , The recommendations are contained in a report from the Maryland ...
Breaking Biology Technology: