摘要:
A filter for trapping and combusting diesel exhaust particulates and method of making the same. The filter comprises a monolithic substrate coated with a refractory oxide material which at a frequency of 2.45 GHz heats up said filter from room temperature to about 600° C. in 5 minutes or less, and wherein said refractory oxide material has a loss tangent which decreases with increasing temperature such that an equilibrium in said filter temperature is reached at no greater than 1100° C. The microwave-absorbing material having a composition selected from the group consisting of A1−xMxB1−yM′yO3−&agr;, where A and M are selected from the group consisting of Na, K, Rb, Ag, Ca, Sr, Ba, Pb, La, Pr, Nd, Bi, Ce, Th and combinations thereof; where B and M′ are selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Rh, Ru, Pt, Zn, Nb, Ta, Mo, W and combinations thereof; wherein, the chemical formula is electrostatically balanced; (A′aRrM″m)(Z)4(X)6O24, where A′ is from Group IA metals; where R is selected from Group IIA metals; where M″ is selected from the group consisting of Mn, Co, Cu, Zn, Y, lanthanides and combinations thereof; where Z is selected from the group consisting of Zr, Hf, Ti, Nb, Ta, Y, lanthanides, Sn, Fe, Co, Al, Mn, Zn, Ni, and combinations thereof; where X is selected from the group consisting of P, Si, As, Ge, B, Al, and combinations thereof.
摘要:
A filter for trapping and combusting diesel exhaust particulates comprising a microwave-absorbing filter body formed from a ceramic material having a general formula selected from the group consisting of A1−xMxB1−yM′yO3−&agr;, where A and M are selected from the group consisting of Na, K, Rb, Ag, Ca, Sr, Ba, Pb, La, Pr, Nd, Bi, Ce, Th and combinations thereof; where B and M′ are selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Rh, Ru, Pt, Zn, Nb, Ta, Mo, W and combinations thereof; wherein, the chemical formula is electrostatically balanced; (A′aRrM″m)(Z)4(X)6O24, where A′ is from Group IA metals; where R is selected from Group IIA metals; where M″ is selected from the group consisting of Mn, Co, Cu, Zn, Y, lanthanides and combinations thereof; where Z is selected from the group consisting of Zr, Hf, Ti, Nb, Ta, Y, lanthanides, Sn, Fe, Co, Al, Mn, Zn, Ni, and combinations thereof; where X is selected from the group consisting of P, Si, As, Ge, B, Al, and combinations thereof; wherein, the chemical formula is electrostatically balanced.
摘要:
Labels, methods of making labels and methods of using labels are disclosed. The labels can be manufactured using fiber drawing techniques or by shutter masking. The labels can be used for detecting the presence of an analyte in a sample and for detecting interactions of biomolecules.
摘要:
A planar, rigid substrate made from a porous, inorganic material coated with cationic polymer molecules for attachment of an array of biomolecules, such as DNA, RNA, oligonucleotides, peptides, and proteins. The substrate has a top surface with about at least 200 to about 200,000 times greater surface area than that of a comparable, non-porous substrate. The cationic polymer molecules are anchored on the top surface and in the pores of the porous material. In high-density applications, an array of polynucleotides of a known, predetermined sequence is attached to this cationic polymer layer, such that each of the polynucleotide is attached to a different localized area on the top surface. The top surface has a surface area for attaching biomolecules of approximately 387,500 cm2/cm2 of area (˜7.5 million cm2/1×3 inch piece of substrate). Each pore of the plurality of pores in the top surface of the substrate has a pore radius of between about 40 Å to about 75 Å. Not only does the cationic coating in and over the pores of the substrate greatly increase the overall positive charge on the substrate surface, but also given the size of the pores provides binding sites to which biomolecules can better attach.
摘要:
An improved electrode design for solid state devices, fuel cells, sensors and the like is made by incorporation of a porous layer of the electrolyte material over the dense electrolyte, and by the introduction of an electrocatalyst into the porous layer such that it is also continuous. The resulting electrode structure of dense electrolyte/porous electrolyte, continuous electrocatalyst and gas phase are present creating an enhanced three phase (TPB) length over that of conventional designs. The design allows for improved performance at lower temperatures which means a lower cost of materials, fewer problems from oxidation and corrosion, and improved durability. In a preferred embodiment, the dense electrolyte and porous electrolyte is yttria-stabilized zirconia (YSZ), and the electrocatalyst is selected from silver; platinum; rhodium; palladium; iridium; ruthenium;(La.sub.1-x Sr.sub.x) MnO.sub.3, wherein x is 0 to 0.5;(La.sub.1-x Sr.sub.x) CoO.sub.3, wherein x is 0 to 0.6;(La.sub.1-x Sr.sub.x)(Co.sub.1-y Fe.sub.y)O.sub.3, wherein x is 0 to 0.4 and y is 0 to 0.8;In.sub.2 O.sub.3 --PrO.sub.1.83 --ZrO.sub.2, having composition ratios of In.sub.2 O.sub.3 of 0-90%, PrO.sub.1.83 of 10-60% and ZrO.sub.2 of 0 to 50%;TbO.sub.2 being 35 to 40% doped with YSZ;SnO.sub.2 being 0 to 20% doped with In.sub.2 O.sub.3 ;ZrO.sub.2 being 0 to 40% doped with In.sub.2 O.sub.3 ;Sm.sub.0.5 Sr.sub.0.5 CoO.sub.3 ;La.sub.0.6 Ca0.4MnO.sub.3 ;Y.sub.1-x Ca.sub.x FeO.sub.3, wherein x is 0 to 1;SrCo.sub.1-x Fe.sub.x O.sub.3, wherein x is 0.2 to 0.8;TiO.sub.2 being 0-30% doped with YSZ; or mixtures thereof.
摘要:
Labels, methods of making labels and methods of using labels are disclosed. The labels can be manufactured using fiber drawing techniques or by shutter masking. The labels can be used for detecting the presence of an analyte in a sample and for detecting interactions of biomolecules.
摘要:
A porous inorganic substrate and method of fabricating such substrate for attaching an array of biological or chemical molecules to be used in a high-density microarray device. The substantially planar substrate comprises a porous inorganic layer adhered to a flat, rigid, non-porous, inorganic understructure having a coefficient of thermal expansion compatible with that of the porous inorganic layer. The porous inorganic layer is characterized as having dispersed throughout it a plurality of interconnecting voids as defined by a network of contiguous inorganic material, each of a predetermined mean size. The continuous inorganic material and contents of the voids exhibit a high contrast in their indices of refraction relative to each other. The substrate further comprises a uniform coating of a binding agent over at least a part of the surface area of the voids and the top surface of the porous inorganic layer.
摘要:
An electrode structure for a low voltage, high current electrical production device includes a charge transfer member (612). An electrically conductive member (605) having a non-uniform resistance is disposed on the charge transfer member 612 for optimizing current coupling.
摘要:
An electrolytic perovskite and method for synthesizing the electrolytic perovskite are described herein. Basically, the electrolytic perovskite is a solid that has an ion conductivity greater than 10−5 S/cm in a temperature range of 0–400° C., wherein the ion is Li+, H+, Cu+, Ag+, Na+ or Mg2+. For example, Li1/8Na3/8La1/4Zr1/4Nb3/4O3 (5.26×10−4 S/cm) and Li1/8K1/2La1/8NbO3 (2.86×10−3 S/cm) are two electrolytic perovskites that have been synthesized in accordance with the present invention that have a high Li+ conductivity at 20° C. Both compositions have been confirmed in experiments to conduct Ag+ and H+ ions, as well. The present invention also includes a solid proton conductor that can be formed from the electrolytic perovskite by replacing the ions located therein with protons. The electrolytic perovskite and solid proton conductor can be used in a wide variety of applications or devices including, for example, a fuel cell, a membrane reactor, an amperometric hydrocarbon sensor or a steam electrolysis application.
摘要翻译:本文描述了一种电解钙钛矿和合成电解钙钛矿的方法。 基本上,电解钙钛矿是在0-400℃的温度范围内离子电导率大于10 -5 S / cm的固体,其中离子是Li + H +,H +,H +,SO 2 +,SO 2 +,SO 2 + SUP>。 例如,1/1/3/3/3/3/1/1/3/3/1 / > 3/4 O 3(5.26×10 -4 S / cm)和Li 1/8 K 1 / 2 sub> 1/8 NbO 3(2.86×10 -3 S / cm)是已经合成的两种电解钙钛矿 根据本发明,在20℃下具有高的Li + +电导率。两种组合物已经在实验中得到证实,以进行Ag + +和/ / SUP>离子。 本发明还包括固体质子导体,其可以通过用质子代替其中的离子,由电解钙钛矿形成。 电解钙钛矿和固体质子导体可用于各种应用或装置中,包括例如燃料电池,膜反应器,电流式烃传感器或蒸汽电解应用。