Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Silicon Diodes Treat Burns

30.05.2005


The St. Petersburg researchers suggest that infrared emission should be used to treat burns. The Foundation for Assistance to Small Innovative Enterprises (FASIE) will help the authors in the framework of the “Start” program to develop and begin production of devices required for such treatment based on silicon light-emitting diodes.



A unique device based on silicon light-emitting diodes was developed by the St. Petersburg physicists – specialists of the Ioffe Physico-Technical Institute, Russian Academy of Sciences, and the St. Petersburg State Electrotechnical University. Emission of far infra-red range of wave-lengths generated by this device will help to cure in an ordinary hospital even such burns that could be previously treated only in specialized burn centers. The Foundation for Assistance to Small Innovative Enterprises (FASIE) will help the researchers to arrange production of remarkable devices.

“The fact that the far infrared emission promotes quicker healing of burns can be considered ascertained, says project manager, Professor Bagrayev, Doctor of Science (Physics&Mathematics). We have already made sure of that through applying the small-size device developed by us, which proved well in treating arthrosis, wounds, ulcers and bedsore. It has turned out that in case of burns the device helps very efficiently: affected surface heals quicker and hurts less. However, irradiation of a large surface accordingly requires the radiation source of a larger flat area than the one previously used.


The problem is that until now there existed no far infrared radiation sources of a larger flat area. That is why we have patented our apparatus and treatment mode not only in Russia but also abroad. The radiation spectrum required for efficient treatment should be wideband one, from 3.5 through 40 microns, while all previously known far infrared light-emitting diodes either had narrow radiation spectrum and were expensive or provided strong parasitic effect - emission in the near infrared area. That is, they heat up the patient too much and can even burn the patient, which is absolutely unacceptable.”

The far infrared range panel emitters developed by the group under guidance of N.T. Bagrayev are based on silicon. The researchers have developed technology, which allows to grow extra small p-n barriers (only two to three nm deep) on the surface of single-crystalline silicon, i.e. tiny radiating light-emitting diode elements parted by 2 nm thick barriers.

However, the value of that structure would have been low, if the authors did not invent the way to reinforce emission from these extrasmall light-emitting diodes. And they did invent it! The researchers learned to grow a resonator layer on the same plate - silicon microscopical pyramidia, covering all over the formerly smooth crystal boundary, consisting of multitude radiating elements.

Based on such well-disposed rows of silicon light-emitting diodes, the researchers have now learned to produce large panels (the square being 1.8 m x 0.6 m), each of the panel will contain 108 pieces. Final clinical trials of the new device in the Vishnevsky Scientific Research Institute are scheduled for April this year, but the authors do not expect any troublesome surprises: all preliminary tests have been successful. Moreover, the researchers are sure that the device they have developed will be efficient even in cases that seemed hopeless so far– i.e., patients in shock condition, with large area of burns.

The first infrared devices for treating burns are scheduled for release already by the end of 2006. These vitally important devices will be produced by a small-scale enterprise to be set up in the framework of the ‘Start” program with the help of the Foundation for Assistance to Small Innovative Enterprises. The enterprise will be called “Dipole Structures”.

Sergey Komarov | alfa
Further information:
http://www.informnauka.ru

More articles from Physics and Astronomy:

nachricht What happens when we heat the atomic lattice of a magnet all of a sudden?
17.07.2018 | Forschungsverbund Berlin

nachricht Subaru Telescope helps pinpoint origin of ultra-high energy neutrino
16.07.2018 | National Institutes of Natural Sciences

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: First evidence on the source of extragalactic particles

For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.

To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...

Im Focus: Magnetic vortices: Two independent magnetic skyrmion phases discovered in a single material

For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.

Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...

Im Focus: Breaking the bond: To take part or not?

Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.

A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...

Im Focus: New 2D Spectroscopy Methods

Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.

"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....

Im Focus: Chemical reactions in the light of ultrashort X-ray pulses from free-electron lasers

Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.

Free-electron lasers (FELs) generate extremely short and intense X-ray flashes. Researchers can use these flashes to resolve structures with diameters on the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Leading experts in Diabetes, Metabolism and Biomedical Engineering discuss Precision Medicine

13.07.2018 | Event News

Conference on Laser Polishing – LaP: Fine Tuning for Surfaces

12.07.2018 | Event News

11th European Wood-based Panel Symposium 2018: Meeting point for the wood-based materials industry

03.07.2018 | Event News

 
Latest News

Microscopic trampoline may help create networks of quantum computers

17.07.2018 | Information Technology

In borophene, boundaries are no barrier

17.07.2018 | Materials Sciences

The role of Sodium for the Enhancement of Solar Cells

17.07.2018 | Power and Electrical Engineering

VideoLinks
Science & Research
Overview of more VideoLinks >>>