摘要:
A compliant cantilevered three-dimensional micromold is provided. The compliant cantilevered micromold is suitable for use in the replication of cantilevered microparts and greatly simplifies the replication of such cantilevered parts. The compliant cantilevered micromold may be used to fabricate microparts using casting or electroforming techniques. When the compliant micromold is used to fabricate electroformed cantilevered parts, the micromold will also comprise an electrically conducting base formed by a porous metal substrate that is embedded within the compliant cantilevered micromold. Methods for fabricating the compliant cantilevered micromold as well as methods of replicating cantilevered microparts using the compliant cantilevered micromold are also provided.
摘要:
Materials and methods of making low-sintering-temperature glass waste forms that sequester radioactive iodine in a strong and durable structure. First, the iodine is captured by an adsorbant, which forms an iodine-loaded material, e.g., AgI, AgI-zeolite, AgI-mordenite, Ag-silica aerogel, ZnI2, CuI, or Bi5O7I. Next, particles of the iodine-loaded material are mixed with powdered frits of low-sintering-temperature glasses (comprising various oxides of Si, B, Bi, Pb, and Zn), and then sintered at a relatively low temperature, ranging from 425° C. to 550° C. The sintering converts the mixed powders into a solid block of a glassy waste form, having low iodine leaching rates. The vitrified glassy waste form can contain as much as 60 wt % AgI. A preferred glass, having a sintering temperature of 500° C. (below the silver iodide sublimation temperature of 500° C.) was identified that contains oxides of boron, bismuth, and zinc, while containing essentially no lead or silicon.
摘要翻译:制造低烧结温度玻璃废物的材料和方法形成了强大耐用的结构中的放射性碘。 首先,碘被吸附剂捕获,该吸附剂形成碘负载材料,例如AgI,AgI-沸石,Ag1-丝光沸石,Ag-二氧化硅气凝胶,ZnI 2,CuI或Bi 5 O 7。 接下来,将负载碘的材料的颗粒与低烧结温度玻璃(包括各种Si,B,Bi,Pb和Zn的氧化物)的粉状玻璃料混合,然后在比较低的温度下从425 ℃至550℃。烧结将混合粉末转化为具有低碘浸出速率的玻璃状废物形式的固体块。 玻璃化玻璃废物形式可含有多达60重量%的AgI。 确定了烧结温度为500℃(低于碘化银升华温度为500℃)的玻璃,其含有硼,铋和锌的氧化物,同时基本上不含铅或硅。
摘要:
A new class of processes for fabrication of precision miniature rare earth permanent magnets is disclosed. Such magnets typically have sizes in the range 0.1 to 10 millimeters, and dimensional tolerances as small as one micron. Very large magnetic fields can be produced by such magnets, lending to their potential application in MEMS and related electromechanical applications, and in miniature millimeter-wave vacuum tubes. This abstract contains simplifications, and is supplied only for purposes of searching, not to limit or alter the scope or meaning of any claims herein.
摘要:
Applique circuits suitable for advanced packaging applications are introduced. These structures are particularly suited for the simple integration of large amounts (many nanoFarads) of capacitance into conventional integrated circuit and multichip packaging technology. In operation, applique circuits are bonded to the integrated circuit or other appropriate structure at the point where the capacitance is required, thereby minimizing the effects of parasitic coupling. An immediate application is to problems of noise reduction and control in modern high-frequency circuitry.
摘要翻译:引入适用于先进封装应用的Appliqu + E,acu e + EE电路。 这些结构特别适用于将大量(许多nanoFarads)电容简单集成到传统的集成电路和多芯片封装技术中。 在操作中,贴片+ E,acu e + EE电路在需要电容的位置被结合到集成电路或其他适当的结构,从而最小化寄生耦合的影响。 一个立即的应用是现代高频电路中降噪和控制的问题。
摘要:
Thixotropic particle suspensions are prepared by controlling the quantity of dispersant composition used for particle coating to an amount which is less than that quantity that would provide a full coating of dispersant on all particles suspended.