In this paper, we introduce a query suggestion approach to reuse users' search context and search logs. For a given search log, we integrate two pieces of wisdom embedded in the search context: consecutive queries and reformulation patterns between consecutive queries. When providing suggestions online, we extract concepts that represent the user's intent and associate these concepts with wisdom attained from past users who had similar search intents. Finally, customized suggestions are provided according to the current user's search pattern. The experimental results demonstrate that the proposed approach outperforms existing query suggestion methods and effectively provides users with more accurate suggestions to help them get required information faster.
This work studies the NH 3 plasma passivation on a novel gate-allaround poly-Si TFTs with multiple nanowire channels (GAA-MNC TFTs). The NH 3 plasma passivation can effectively passivate the defects in poly-Si channel and improve the electrical performance of poly-Si TFTs. As comparison to conventional TFTs, the GAA-MNC TFTs with NH 3 plasma passivation exhibit outstanding three-dimensional gate controllability and excellent electrical characteristics, which revealed a high ON/OFF current ratio (>10 8 ), a low threshold voltage, a steep subthreshold swing, and a near-free drain-induced barrier lowering. Therefore, such the high-performance GAA-MNC TFTs are very suitable for the applications in the system-on-panel (SOP) and three-dimensional (3D) circuits.
A novel T-shaped-gated (T-Gate) polycrystalline silicon thin-film transistor (poly-Si TFT) with in-situ vacuum gaps has been proposed and fabricated only with a simple process. The T-Gate structure is formed only by a selective undercut-etching technology of the Mo/Al bilayers. Then, vacuum gaps are in-situ embedded in this T-Gate structure subsequent to capping the SiH 4 -based passivation oxide under the vacuum process chamber. The proposed T-Gate poly-Si TFT has demonstrated to suppress the short-channel effect and to improve the breakdown characteristics. It is attributed to the undoped offset region and vacuum gap to reduce the maximum electric field at drain junction.
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