日前。刊登在国际杂志Immunity上的一项研究报告中，来自圣路易斯大学（Saint Louis University）的研究人员通过研究揭示了机体免疫系统中的树突细胞如何指挥T淋巴细胞学习对机体自身细胞的耐受性。机体免疫系统往往会通过避免过度反...日前。刊登在国际杂志Immunity上的一项研究报告中，来自圣路易斯大学（Saint Louis University）的研究人员通过研究揭示了机体免疫系统中的树突细胞如何指挥T淋巴细胞学习对机体自身细胞的耐受性。机体免疫系统往往会通过避免过度反应或反应不足所带来的危险来维持机体健康，展开更多
Avalanche photodiodes fabricated from AlInAsSb grown as a digital alloy exhibit low excess noise.In this article,we investigate the band structurerelated mechanisms that influence impact ionization.Band-structures cal...Avalanche photodiodes fabricated from AlInAsSb grown as a digital alloy exhibit low excess noise.In this article,we investigate the band structurerelated mechanisms that influence impact ionization.Band-structures calculated using an empirical tight-binding method and Monte Carlo simulations reveal that the mini-gaps in the conduction band do not inhibit electron impact ionization.Good agreement between the full band Monte Carlo simulations and measured noise characteristics is demonstrated.展开更多
基金Army Research Office,Grant/Award Number:W911NF-17-1-0065Defense Advanced Research Projects Agency,Grant/Award Number:GG11972.153060。
文摘Avalanche photodiodes fabricated from AlInAsSb grown as a digital alloy exhibit low excess noise.In this article,we investigate the band structurerelated mechanisms that influence impact ionization.Band-structures calculated using an empirical tight-binding method and Monte Carlo simulations reveal that the mini-gaps in the conduction band do not inhibit electron impact ionization.Good agreement between the full band Monte Carlo simulations and measured noise characteristics is demonstrated.
