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Article
Analysis of microwave propagation effects using two-dimensional electrooptic field map** techniques
In high-speed electronic devices and monolithic microwave and millimetrewave integrated circuits the propagation of electromagnetic waves plays an important role. In so-called travelling wave devices and circu...
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Chapter
Biologische Reinigung CKW-kontaminierter Abluft
Es gibt genügend Produktionslinien, deren Abluftströme Beimengungen von Chlorkohlenwasserstoffen enthalten, obwohl die CKWs auf dem Index stehen und immer weniger produziert werden.
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Article
Molecular basis for cross-reactivity between a strain ofMycobacterium terrae and DNA probes forMycobacterium tuberculosis complex
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Article
Immunogenetic sudies on HLA-DR in German coal miners with and without coal worker's pneumoconiosis
Coal worker's pneumoconiosis is caused by the pulmonary deposition of coal dust, including silica particles. Several factors such as chemical composition and physical properties of silica-containing dust, part...
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Article
InGaAs/GaAs multiple-quantum-well modulators and switches
The design, fabrication and characterization of electrooptical modulators and switches based on pseudomorphic InGaAs/GaAs multiple-quantum-well (MQW) structures is presented. The absorption and refractive inde...
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Chapter
Electrooptical Modulation in Vertical Multiple Quantum Well Microresonators
We demonstrate a novel, efficient and fast vertical nin AlGaAs/GaAs multiple quantum well (MQW) microresonator grown by molecular beam epitaxy (MBE). The electrical current of this hybrid device is kept low by...
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Chapter
Microwave Photonics
In this paper, an overview is given on the fundamental concepts of a special kind of ultrafast photonic device based upon the interaction of propagating microwave signals with optical beams. The characteristic...
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Chapter
Current Density Filaments in Semiconductor Devices
In recent years the study of nonlinear dynamic systems has become a major topic in different areas of physics, chemistry and biology [1]. Undoubtedly, the interest was further stimulated by an increasing numbe...
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Article
Dynamics of optical and electrooptical switching in photo-thermal bistable CdS crystals
We investigate the dynamical properties of photo-thermal Self Electrooptic Effect Devices (SEEDs) fabricated of thin single crystal platelets in a wide region of excitation intensities at room temperature. Det...
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Chapter and Conference Paper
Photonic Switching and SEED Effect in AlGaAs/GaAs DFB Structures Grown by MOVPE
We present theoretical and experimental results of photonic switching and electrooptical modulation in novel AlGaAs/GaAs distributed feedback (DFB) structures grown by MOVPE.
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Chapter and Conference Paper
Hemodynamic Effects of Amrinone and Changes in Norepinephrine (NE) Plasma Concentration
Plasma NE concentration of patients with severe heart failure (NYHA class (III-)IV) was found to be about three times higher than it was evaluated in those patients with normal hemodynamic function or mild hea...
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Chapter and Conference Paper
Atrial Natriuretic Peptide and Atrial Size
Enlarged plasma volume causes an increase of atrial size, and leads to a higher wall tension playing an important role in the secretion of ANP. Dependent on the compliance of the atrial myocardium different pr...
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Article
Thermo-optical SEED devices: External control of nonlinearity, bistability and switching behaviour
We discuss novel fundamental properties of thermo-optical SEED devices and present experimental results performed on Si Schottky, diodes where the optoelectronically generated electrical power leads to optical...
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Article
Pattern formation in S-shaped negative differential conductivity material
To study the electrical current density and the potential distribution inS-shaped negative differential conductivity materials, a theoretical model is developed which is based upon the introduction of an interfac...
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Article
Soliton propagation along periodic-loaded transmission line
Nonlinear dispersive wave propagation along a transmission line periodically loaded with varactor diodes is examined. Assuming small nonlinearity and weak dispersion the theoretical description may be reduced ...
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Article
Nonlinear wave propagation along periodic-loaded transmission line
A high frequency transmission line periodically loaded with varactor diodes is presented to study nonlinear wave propagation. The nonlinearity and dispersion characteristics are experimentally and theoreticall...
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Article
Distributed variable-capacitance microstrip lines for microwave applications
Variable-capacitance microstrip lines are easily prepared on semiconducting substrate by use of IC-technology yielding a form of distributed nonlinear transmission line for high-frequency operation. Its cross ...
