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- W2096205072 abstract "Modern high-performance computing systems and data centers are implemented as many-core server systems. Current state of the art data centers have server racks with pluggable boards where each board has many multi-core processors and memory units. These boards are connected via electrical or optical cables. In such systems, communication bandwidth between the high-speed microprocessor cores and the memory is limited. To leverage full performance of these powerful chips, it is required to provide high memory bandwidth as well as effective power delivery and heat removal solutions. To address these challenges in high performance computing systems, we present a 3D packaging solution that includes a novel silicon interposer with electrical, optical, and fluidic (trimodal) interconnects and through-silicon vias (TSVs). The electrical TSVs in the silicon interposer enable power and signal delivery from motherboard to chips stacked on top of the interposer. The optical TSVs in the silicon interposer can provide ultra-high bandwidth communication between chips on different silicon interposers through motherboard level optical links. The fluidic TSVs enable a coolant to be routed from the motherboard to the chips on the silicon interposer. We have fabricated and characterized polymer-clad electrical TSVs (for low stress) with diameter that meets ITRS projections for high-performance computing systems. Using the same polymer used for the cladding of electrical TSVs, we have fabricated and characterized optical TSVs adjacent to electrical TSVs. Spin coating of the photodefinable polymer for electrical and optical TSVs is done in single step. Fabrication of fluidic TSVs can be done using the same cladding as that of the polymer-clad electrical TSVs without electroplating the copper. This leaves behind an empty polymer-clad via which can be used as a fluidic TSV." @default.
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- W2096205072 date "2011-05-01" @default.
- W2096205072 modified "2023-10-13" @default.
- W2096205072 title "Electrical, optical and fluidic through-silicon vias for silicon interposer applications" @default.
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- W2096205072 doi "https://doi.org/10.1109/ectc.2011.5898790" @default.
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