Abstract:
A method of purifying a nanodiamond powder includes preparing the nanodiamond powder, heating the nanodiamond powder at between 450° C. and 470° C. in an atmosphere including oxygen, performing a hydrochloric acid treatment on the heated nanodiamond powder, and performing a hydrofluoric acid treatment on the nanodiamond powder obtained after performing the hydrochloric acid treatment.
Abstract:
Embodiments of methods for fabricating polymer nanostructures and nanostructured electrodes are disclosed. Material layers are deposited onto polymer nanostructures to form nanostructured electrodes and devices including the nanostructured electrodes, such as photovoltaic cells, light-emitting diodes, and field-effect transistors. Embodiments of the disclosed methods are suitable for commercial-scale production of large-area nanostructured polymer scaffolds and large-area nanostructured electrodes.
Abstract:
The present invention relates generally to high sulfur content polymeric materials and composites, methods for making them, and devices using them such as electrochemical cells and optical elements. In one aspect, a polymeric composition comprising a copolymer of sulfur, at a level in the range of at least about 50 wt % of the copolymer, and one or more monomers each selected from the group consisting of ethylenically unsaturated monomers, epoxide monomers, and thiirane monomers, at a level in the range of about 0.1 wt % to about 50 wt % of the copolymer.
Abstract:
Provided is a tunable radiation emitting structure comprising: a nanoamorphous carbon structure having a plurality of relief features provided in a periodic spatial configuration, wherein the relief features are separated from each other by adjacent recessed features, and wherein the nanoamorphous carbon comprises a total of from 0 to 60 atomic percent of one or more dopants of the dopant group consisting of: transition metals, lanthanoids, electro-conductive carbides, silicides and nitrides. In one embodiment, a dopant is selected from the group consisting of: Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, La and other lanthanides, Hf, Ta, W, Rh, Os, Ir, Pt, Au, and Hg. In one embodiment, a dopant is selected from the group consisting of: electro-conductive carbides (like Mo2C), silicides (like MoSi2) and nitrides (like TiN).
Abstract:
A tunable radiation emitting structure comprising a discontinuous conducting interface having periodic or quasi-periodic features, wherein the structure emits narrowband terahertz radiation when heated is disclosed.
Abstract:
A hybrid EO polymer/sol-gel modulator in which the sol-gel core waveguide does not lie below the active EO polymer waveguide increases the higher electric field/optical field overlap factor Γ and reduces inter-electrode separation d thereby lowering the modulator's half-wave drive voltage Vπ, reducing insertion loss and improving extinction.
Abstract:
An integrated optical add/drop multiplexer (OADM) comprising a multilayer stack formed to add and drop specific information-carrying wavelengths propagating within a fiber optic communication network. The stack comprises a first layer comprising a silicon or silica substrate, a second layer comprising an undercladding layer, a third layer comprising a core glass layer, and a fourth layer comprising an overcladding layer. In another embodiment, the stack comprises a first layer comprising a silicon or silica substrate, a second layer comprising an undercladding layer, a third layer comprising a polymer layer, a fourth layer comprising a core glass layer, and a fifth layer comprising an overcladding layer.
Abstract:
The invention consists of a light absorbing top antireflective layer that reduces the swing curve amplitude for photoresist materials used in the semiconductor industry. The coating may be water based but is not necessarily so. The advantage of a water-based coating is its ease of use, since it can be applied without intermixing to the softbaked photoresist, and is removed in the development step, so that process complexity is only minimally increased. One problem that has been associated with the existing non-absorbing antireflective coatings is that the optimum swing curve reduction is only achieved at a very low refractive index. The advantages of a dyed coating are a) that the refractive index of the top coat can additionally be lowered by making use of anomalous dispersion effects if the dye is chosen judiciously, and b) that it is possible to achieve the optimum swing curve reduction at a higher refractive index of the top coat. By a combination of these two effects, the present invention demonstrates a reduction of the swing curve close to the theoretical minimum value, which constitutes a substantial improvement over existing antireflective topcoats.
Abstract:
A system for the beading and flanging of opposed ends of a cylindrical can body wherein the opposed beading and flanging chucks are sequentially withdrawn. Stop means is mounted on the can carrying wheel adjacent the flanging chuck and cooperates with the flanging chuck for a retention of the flanged end of the can therein during the initial removal of the beading chuck which inherently effects a greater frictional engagement with the beaded end of the can. The stop allows a free subsequent withdrawal of the flanging chuck.The invention herein is generally concerned with the forming of can bodies for peel-top containers, and more particularly relates to a system for substantially simultaneously beading one end of a cylindrical can body and flanging the second end thereof.Apparatus for the simultaneous or substantially simultaneous flanging or beading of opposed ends of cylindrical cans are evidenced by the following U.S. Pat Nos:2,424,581 Peters2,741,292 Butters2,956,610 Diezel3,062,263 Austing et al.3,418,837 Vanderlaan et al.3,483,722 Fink3,688,538 Hoyne3,782,314 Franek et al.3,797,429 WolfeAttention is also directed to several machines actually in use in the various involved industries, including one machine known commercially as Bliss Model 1315 and the Borden Horizontal Flanger Model 610. Each of these basically includes a pair of star wheels which sequentially carry a series of cylindrical can bodies along a path wherein they are engaged by opposed chucks or dies which simultaneously flange or otherwise form the opposed ends of the can and are subsequently withdrawn therefrom with the formed can discharging from the star wheel carriers. The selective engagement and disengagement of the chucks is effected through a series of camming guides including camming tracks and cam followers traveling in the tracks, this structure also being readily apparent in several of the above referred to patents, note for example Vanderlaan et al. 3,418,837.In typical equipment of the type described supra, the forming being effected at the opposed ends of the container is the same, and as such, no difficulty has been encountered in effecting a simultaneous withdrawing of the opposed forming chucks. However, when different formations are to be provided on the opposed ends of a can body, a different frictional grip is developed at the opposed ends of the can due to the different deformations to which the can ends are subjected. This in turn precludes an effective stripping of the can from that chuck at which a greater frictional grip is developed during the can end formation. This problem is considered in great detail in Wolfe, U.S. Pat. No. 3,797,429, which is concerned with utilizing axially aligned necking and flanging dies, and wherein the problem is resolved by utilizing an elaborate air pressure controlled system for clamping the can body as required during a selective stripping of the dies.It is the express purpose of the present invention to provide a system for enabling the substantially simultaneous beading and flanging of the opposed ends of a cylndrical can and the sequential withdrawal of the relatively tighter beading chuck and then the more easily withdrawn flanging chuck. This can be effected, in the preferred form of the invention, by a modification of an existing flanger, for example the Borden Horizontal Flanger Model 610 through merely a substitution of beading chucks for one series of flanging chucks, the provision of fixed can stops on the outer face of the star wheel adjacent the second set of flanging chucks for cooperation therewith in initially providing a means to prevent a sliding of the cans from the flanging chucks, and a slight change in the camming tracks to provide for an initial withdrawal of the beading chucks. The stops, while preventing withdrawal of the can bodies from the flanging chucks as the beading chucks are withdrawn, in no way interfere with the subsequent withdrawal of the flanging chucks.While the apparatus of the invention can obviously be built as a new piece of equipment, the features of the invention particularly lend themselves to being adapted into commercially available equipment through a selective, relatively straight forward and economical modification thereof. This in turn will increase the versatility of existing equipment.