Abstract: A cascaded light emitting device. The cascaded light emitting device includes: a base electrode formed of a base electrode material and electrically coupled to a base voltage lead; a top electrode layer formed of a top electrode material and electrically coupled to a top voltage lead; a number of electroluminescent layers arranged between and electrically coupled to the base electrode and top electrode layer; and at least one middle electrode layer formed of a middle electrode material. Each of the middle electrodes is coupled between two juxtaposed electroluminescent layers. The electroluminescent layers include a mixed conductor that luminesces with a peak wavelength.

Abstract: A cascaded light emitting device. The cascaded light emitting device includes: a base electrode formed of a base electrode material and electrically coupled to a base voltage lead; a top electrode layer formed of a top electrode material and electrically coupled to a top voltage lead; a number of electroluminescent layers arranged between and electrically coupled to the base electrode and top electrode layer; and at least one middle electrode layer formed of a middle electrode material. Each of the middle electrodes is coupled between two juxtaposed electroluminescent layers. The electroluminescent layers include a mixed conductor that luminesces with a peak wavelength.

Abstract: A cascaded light emitting device. The cascaded light emitting device includes: a base electrode formed of a base electrode material and electrically coupled to a base voltage lead; a top electrode layer formed of a top electrode material and electrically coupled to a top voltage lead; a number of electroluminescent layers arranged between and electrically coupled to the base electrode and top electrode layer; and at least one middle electrode layer formed of a middle electrode material. Each of the middle electrodes is coupled between two juxtaposed electroluminescent layers. The electroluminescent layers include a mixed conductor that luminesces with a peak wavelength.

Abstract: The invention teaches electrospun light-emitting fibers made from ionic transition metal complexes (“iTMCs”) such as [Ru(bpy)3]2+(PF6.)2]/PEO mixtures with dimensions in the 10.0 nm to 5.0 micron range and capable of highly localized light emission at low operating voltages such as 3-4 V with turn-on voltages approaching the band-gap limit of the organic semiconductor that may be used as point source light emitters on a chip.

Abstract: The invention is directed to intermetallic compounds for use as catalysts for chemical reactions and catalytic systems. The structure of ordered intermetallic compounds enables such compounds to function as highly efficient catalysts. The ordered intermetallic compounds may be used to catalyze reactions in fuel cells (e.g., hydrogen fuel cells), amongst numerous other applications.

Abstract: A planar microfluidic membraneless flow cell. The design eliminates the need for a mechanical membrane, such as a polyelectrolyte membrane (PEM) in a fuel cell, by providing a flow channel in which laminar flow regimes exist in two fluids flowing in mutual contact to form a “virtual interface” in the flow channel. In the flow cell, diffusion at the interface is the only mode of mass transport between the two fluids. In a fuel cell embodiment, a planar design provides to large contact areas between the two streams, which are fuel and oxidant streams, and between each stream and a respective electrode. In some embodiments, silicon microchannels, of fixed length and variable width and height, have been used to generate power using formic acid as fuel and oxygen as oxidant. Power densities on the order of 180 ?W/cm2 have been obtained using this planar design.

Abstract: The invention is directed to intermetallic compounds for use as catalysts for chemical reactions and catalytic systems. The structure of ordered intermetallic compounds enables such compounds to function as highly efficient catalysts. The ordered intermetallic compounds may be used to catalyze reactions in fuel cells (e.g., hydrogen fuel cells), amongst numerous other applications.

Abstract: An ordered film is formed on a surface by reacting (a) dendrimer or bridging ligand functionalized for reaction with transition metal ions (e.g., terpyridyl-pendant poly-amido amine starburst dendrimers or 1,4-bis[4,4″-bis(1,1-dimethylethyl)-2,2′:6′2″ terpyridine-4′-yl]benzene), dissolved in water immiscible solvent, with (b) transition metal ions dissolved in water, on said surface. This method allows formation of films useful, for example, as electron transfer mediators, other electronic devices, catalysts, sensors, and electrochromic devices.

Abstract: Microelectrodes and methods for making the same are disclosed which have electrode tip diameter of less than 10 .mu.m. The microelectrodes include a tapered electrode wire sealed in, and surrounded by, a tapered insulator tube. In one preferred embodiment, an annealed platinum wire approximately 75 .mu.m in diameter is inserted in an insulator tube, such as a borosilicate pipette, having an inner diameter of approximatley 600 .mu.m. The pipette is heated to the softening temperature of borosilicate and drawn using a conventional pulling technique. As the inner diameter of the pipette draws down, it engages the annealed platinum wire and causes the wire to also draw down in diameter. Careful selection of the relative diameters of the pipette and the platinum wire ensure that the two will break at essentially the same time thereby forming a microelectrode having a platinum disk electrode of less than 10 .mu.m diameter.