Heraeus Quarzglas Gmbh & Co Kg

Leibniz-institut Fur Photonische Technologien E.v.

Stefan Weidlich

Clemens Schmitt

Markus Schmidt

Walter Lehmann

Michael Hünermann

Andreas Langner

Gerhard Schötz

Jaqueline Plass

Jörg Werner

Jens Kobelke

Jacqueline Plass

Dörte Schönfeld

Alexander Laaz

Jürgen Schäfer

Gerhard SCHÖTZ

Michael HÜNERMANN

In known methods for producing a glass component, a void-containing intermediate product containing doped or non-doped SiOis inserted into a sheath tube composed of glass, which has a longitudinal axis and an inner bore, and is thermally treated therein. In order to subject the intermediate product to a thermal and/or reactive treatment that is reproducible and uniform in its effect from this starting point, it is proposed in one embodiment that into the sheath tube's inner bore a first gas-permeable gas diffuser is inserted which is displaceable along the sheath tube's longitudinal axis and is pressed against the intermediate product during the thermal treatment.

Method and apparatus for producing a glass component

One aspect is an apparatus for analyzing particles a capillary as a measuring cell with a hollow channel for receiving or passing through a test sample containing the particles includes a light source for generating a light beam, an optical device for coupling the light beam into the hollow channel at an input point for the purpose of illuminating the test sample, and a detector for detecting scattered light exiting the hollow channel. In one aspects, the hollow channel has an internal diameter Din the range of 10 &#x3bc;m to 60 &#x3bc;m, that the light beam has a radial light intensity distribution with a minimum beam diameter D, wherein the following applies to the diameter ratio D/D: 0.05&#x3c;D/D&#x3c;2.00, and that the light beam has an angle of incidence of less than 2 degrees in relation to the hollow channel's longitudinal axis on entering the hollow channel.

Apparatus and method for analyzing particles

A measuring cell includes a cavity for receiving a test sample to be used in a particle detection apparatus. The measuring cell is configured as an optical waveguide for guiding a light beam. The waveguide has a core which has a refractive index n, extends along a longitudinal axis of the waveguide, has a cross-sectional area Aof less than 80 &#x3bc;min a cross section perpendicular to the longitudinal axis, and which is surrounded by a cladding having a smaller refractive index than n. The cavity forms a channel. The channel extends along the longitudinal axis, is formed inside of or in contact with the core, and has at least one open end with an opening area Aof less than 0.2 &#x3bc;m.

Light guiding measuring cell for use in flow cytometry

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Wiesbaden, Germany

Stefan Weidlich