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Recent Progress of Gr/Si Schottky Photodetectors
Qingguo Shao,Hao Qi,Chao Li,Kunpeng Cai,Jianxia Dong,Xuhui Liu,Ning Cao,Xiaobei Zang 대한금속·재료학회 2023 ELECTRONIC MATERIALS LETTERS Vol.19 No.2
By combing the carrier mobility of graphene with the excellent light absorption properties of silicon, ultra-shallow Schottkyjunction can be obtained, and can exist stably for a long time. The photoelectric property of Schottky junction is determinednot only by graphene and silicon semiconductor layer, but also by the interface layer between the two. Through a series ofoptimizations, the performance of graphene/silicon Schottky junction photodetectors can be continuously improved. Asa result, graphene/silicon Schottky junctions more promising for the development of next generation photodetectors withits stability, ease of preparation and sensitivity. In this review, we firstly give a brief introduction to Gr Schottky junctionphotodetectors, and then present a comprehensive review on the recent progress of optimizing Gr/Si Schottky junction photodetectorsin the past few years, including light management engineering, band engineering and interfacial engineering. Finally, the current challenges are summarized and further perspectives are outlined.
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Congestion Aware Fast Link Failure Recovery of SDN Network Based on Source Routing
( Liaoruo Huang ),( Qingguo Shen ),( Wenjuan Shao ) 한국인터넷정보학회 2017 KSII Transactions on Internet and Information Syst Vol.11 No.11
The separation of control plane and data plane in Software Defined Network (SDN) makes it flexible to control the network behavior, while also causes some inconveniences to the link failure recovery due to the delay between fail point and the controller. To avoid delay and packet loss, pre-defined backup paths are used to reroute the disrupted flows when failure occurs. However, it may introduce large overhead to build and maintain these backup paths and is hard to dynamically construct backup paths according to the network status so as to avoid congestion during rerouting process. In order to realize congestion aware fast link failure recovery, this paper proposes a novel method which installs multi backup paths for every link via source routing and per-hop-tags and spread flows into different paths at fail point to avoid congestion. We carry out experiments and simulations to evaluate the performance of the method and the results demonstrate that our method can achieve congestion aware fast link failure recovery in SDN with a very low overhead.
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BRAIN POTENTIALS OF ONLINE CONTENT EMOTIONALITY ON SOCIAL MEDIA
Yujing Huang,Jia Jin,Hao Ding,Yizhou Shao,Bonai Fan,Qingguo Ma 글로벌지식마케팅경영학회 2018 Global Marketing Conference Vol.2018 No.07
Introduction Current research investigated whether emotionality of content would facilitate the possibility to share information on social media by using event-related potentials. Theoretical development Emotionality is an excitatory state which evokes autonomic nervous system. Previous studies suggested that stimuli with high emotionality elicited increased P100/P200 amplitudes relative to stimuli with low emotionality (Huang & Luo, 2006). Research design We tested the purpose in an affective priming paradigm in which participants were exposed to online content (i.e. the prime stimulus) followed by a stimulus (i.e. the target stimuli) from International Affective Picture System. Participants were required to judge whether the target was neutral white picture. Next, a nine-point Likert scale was followed to assess the level of emotionality for online content. Result and conclusion We observed a congruency effect in the priming effect. More importantly, early brain potentials P100/P200 were higher when participants were exposed to online content with more possibility to share than online content with less possibility to share. This finding could be explained by the response level account theory (Fazio, 2001). This study provides an insight to neural mechanism underlying emotionality of online content.
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