Abstract:
A solid state driver circuit is compatible with either a low frequency mains or magnetic ballast supply or a high frequency electronic ballast input. An input detection circuit detects the frequency of the supply and selectively adjusts the drive circuit to act as a linear regulator when an electronic ballast is detected, or as a switched mode regulator when mains or a magnetic ballast is detected.
Abstract:
A solid state lighting driver circuit (500) has a switch (502) connected across its input that selectively drives the circuit (500) with a ballast output, or provides a low impedance path for the ballast output so that the ballast goes into self-protection mode. This means that the driver circuit (500) is compatible with an electronic ballast but is well regulated.
Abstract:
A new fractionation device shows desirable features for exploratory screening and biomarker discovery. The constituent MSCs may be tailored for desired pore sizes and surface properties and for the sequestration and enrichment of extremely low abundant protein and peptides in desired ranges of the mass/charge spectrum. The MSCs are effective in yielding reproducible extracts from complex biological samples as small as 10 III in a time as short as 30 minutes. The MSC-based device may serve as a diagnostic tool to complement histopathology, imaging, and other conventional clinical techniques. The MSCs mediated identification of disease-specific protein signatures may help in the selection of personalized therapeutic combinations, in the real-time assessment of therapeutic efficacy and toxicity.
Abstract:
The present invention is related to methods of packaging optical nonlinear crystal with a periodically domain inversion structure (e.g. periodically poled MgO doped lithium niobate), together with a laser crystal (e.g. Nd doped YVO 4 ) and to achieve low-cost compact efficient second harmonic generation in an intra-cavity configuration.
Abstract:
A method for designing optimized length of a nonlinear crystal (3) with a bonded structure is provided. Also provided are a method for forming a short Quasi-Phase Matching (QPM) crystal (3) sandwiched by non-poled nonlinear crystals (2, 4), and a method for designing multiple-section periodically poled nonlinear crystal with a high temperature, while keeping sufficient long crystal length and high conversion efficiency.
Abstract:
The present invention is related to methods of packaging optical nonlinear crystal with a periodically domain inversion structure (e.g. periodically poled MgO doped lithium niobate) which is bonded with a laser crystal (e.g. Nd doped YVO 4 ) and to achieve efficient second harmonic generation in an intra-cavity configuration.
Abstract:
The present invention is related to a method to control the nucleation and to achieve designed domain inversion in single-domain ferroelectric substrates (e.g. MgO doped LiNbO 3 substrates). It includes the first poling of the substrate with defined electrode patterns based on the corona discharge method to form shallow domain inversion (i.e. nucleation) under the electrode patterns, and is followed by the second crystal poling based on the electrostatic method to realize deep uniform domain inversion. Another objective of the present invention is to provide methods to achieve broadband light sources using a nonlinear crystal with a periodically domain inverted structure.