Far Infrared Silicon Diodes Treat Burns

May 27, 2005

The St. Petersburg researchers (Russia) suggest that infrared emission should be used to treat burns. 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 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.

“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”.

Source: Informnauka (Informscience) Agency

Explore further: Colombia recovers archaeological gems from Spain

add to favorites email to friend print save as pdf

Related Stories

Mysteries of space dust revealed

Aug 29, 2014

The first analysis of space dust collected by a special collector onboard NASA's Stardust mission and sent back to Earth for study in 2006 suggests the tiny specks open a door to studying the origins of the ...

Towards more efficient solar cells

Aug 13, 2014

A layer of silicon nanocrystals and erbium ions may help solar cells to extract more energy from the ultraviolet (UV, high-energy) part of the solar spectrum. Experimental physicists from the FOM Foundation, ...

Scientists explore mash-up of vacuum tube and MOSFET

Jun 25, 2014

Thumb-size vacuum tubes that amplified signals in radio and television sets in the first half of the 20th century might seem nothing like the metal-oxide semiconductor field-effect transistors (MOSFETs) that ...

Light pulses control graphene's electrical behavior

Aug 01, 2014

Graphene, an ultrathin form of carbon with exceptional electrical, optical, and mechanical properties, has become a focus of research on a variety of potential uses. Now researchers at MIT have found a way to control how ...

Recommended for you

Modern population boom traced to pre-industrial roots

9 hours ago

The foundation of the human population explosion, commonly attributed to a sudden surge in industrialization and public health during the 18th and 19th centuries, was actually laid as far back as 2,000 years ...

Researcher looks at the future of higher education

9 hours ago

Most forecasts about the future of higher education have focused on how the institutions themselves will be affected – including the possibility of less demand for classes on campus and fewer tenured faculty members as ...

Now we know why it's so hard to deceive children

11 hours ago

Daily interactions require bargaining, be it for food, money or even making plans. These situations inevitably lead to a conflict of interest as both parties seek to maximise their gains. To deal with them, ...

User comments : 0