The Sound of Light

Juli 1, 2009

Together with his research team, Professor Vasilis Ntziachristos from the Helmholtz Zentrum Munich, Germany and the Technical University Munich, Germany developed a new technology to make light audible. The technique, called multi-spectral opto-acoustic tomography (MSOT), combines light and ultrasound to visualize fluorescent proteins that are seated several centimeters deep into living tissue.
The researchers used a genetically modified adult zebra fish which carried fluorescent pigments in its tissue. They illuminated the fish from multiple angles using flashes of laser light that are absorbed by the fluorescent pigments in the fish. The pigments absorb the light, a process that causes slight local increases of temperature, which in turn result in tiny local volume expansions. This happens very quickly and creates small shock waves. In effect, the short laser pulse gives rise to an ultrasound wave that the researchers pick up with an ultrasound microphone. To analyze the resulting acoustic patterns, a computer is attached. The computer uses specially developed mathematical formulas to evaluate and interpret the specific distortions caused by scales, muscles, bones and internal organs to generate a three-dimensional image. In the future this technology may facilitate the examination of tumors or coronary vessels in humans.
www.helmholtz-muenchen.de/en

Multi-spectral opto-acoustic tomography or MSOT allows the investigation of subcellular processes in live organisms.

Multi-spectral opto-acoustic tomography or MSOT allows the investigation of subcellular processes in live organisms.


LASER World of PHOTONICS: Positive Results

Juni 25, 2009

With 1,040 exhibitors (2007: 1,008), the exposition LASER World of PHOTONICS 2009 (June 15-18, Munich, Germany) set a new record. The percentage of companies coming from outside Germany rose from 53% in 2007 to 57% this year. The exhibition area was expanded from three halls to four, which brought the total to 42,000 m² of floor space. This additional space particularly benefited the two largest exhibition segments, “Lasers and Optronics” and “Lasers and Laser Systems for Manufacturing.” With over 24,000 attending professionals, the trade show organizer’s expectations were exceeded by a small margin (2007: 26,655). A slight drop in the number of attendees from Germany is primarily due to the lower number of attending professionals from the industrial sector, which has been hit particularly hard by the current economic difficulties.
www.world-of-photonics.net


World of Photonics

Februar 13, 2009

In June 2009, two international events for optical technologies in Europe will once again take place in Munich, Germany. From June 15-18, the New Munich Trade Fair Centre will host the exposition „LASER World of PHOTONICS“ and from June 14-19 the „World of Photonics Congress“ will be held at the International Congress Centre Munich. Both events address to representatives from research, the laser and optoelectronics industries, professionals involved in medicine and technology as well as physicists, chemists, doctors, engineers, system designers, retail companies and service-providers. This year, the trade show and the congress have expanded their offerings for biophotonics and life sciences. The trade show is setting up an exhibition focus area dedicated to the subject of biophotonics. The World of Photonics Congress will present the field of biophotonics at the „Medical Laser Applications“ conference. Experts in the field of lasers in medicine, optical diagnostics, high-end endoscopy and minimally invasive surgery will give practically orientated presentations.
www.world-of-photonics.net

Marienplatz in Munich, Germany

Marienplatz in Munich, Germany