[3] Qiu C, Zhang Z, Xiao M, et al. Scaling carbon nanotube complementary transistors to 5-nm gate lengths. Science, 2017, 355: 271 [4] Cao Q, Tersoff J, Farmer D B, et al. Carbon nanotube transistors scaled to a 40-nanometer footprint. Science, 2017, 356: 1369 [5] Liu H, N...
碳纳米管是目前替代硅材料的热门之选,一些有关的工作也时常见诸报道,比如加州大学伯克利分校Ali Javey教授的栅极长度仅有1纳米的晶体管(Science, 2016, 354, 99,),以及北京大学彭练矛-张志勇课题组的5纳米碳纳米管CMOS器件,将晶体管性能推至理论极限(Science,2017,355, 271,)。 不过,如果当前基于碳纳米管的晶体...
Lei团队报道了一种简单的氧化物纳米线批量制备技术,在不需要催化剂或者外部条件的情况下,直接将体相的合金材料转变为氧化物纳米线。(Science 2017, 355, 267-271.) 图17. 纳米线合成过程形貌 3. 二维材料 二维材料,是指电子仅可在两个维度的非纳米尺度(1-100nm)上自由运动(平面运动)的材料,如纳米薄膜、超晶...
北京大学彭练矛教授(左)和张志勇教授(右) 2017年1月20日,北京大学彭练矛-张志勇课题组在5nm碳纳米管CMOS器件重要研究成果在线发表在著名学术期刊《科学》(Science)上。 集成电路发展的基本方式在于,在晶体管尺寸缩减的前提下,研制性能更强大、集成度更高、功能更复杂的芯片。目前,主流CMOS(互补金属氧化物半导体)...
http://science.sciencemag.org/content/355/6322/271 (导读 宋伊梦) 本研究制备出5纳米栅长的碳纳米管场效应晶体管,其性能远优于同尺度的硅基CMOS器件:速度更快,工作电压更低,亚阈值斜率更小。其开关转换操作每次仅需1个电子,接近场效应晶...
Science 355, 1428–1433 (2017). This study highlights the central role of CD28 dephosphorylation in mediating the negative regulatory effect of PD1-mediated T cell inhibition. CAS PubMed PubMed Central Google Scholar Parry, R. V. et al. CTLA-4 and PD-1 receptors inhibit T-cell activation...
218.1st Annual International Conference on Mathematics, Science, and Education (ICoMSE 2017) 217.2nd International Conference on Social, Economic and Academic Leadership (ICSEAL 2018) 216.Achieving and Sustaining SDGs 2018 Conference: Harnessing the Power of Frontier Technology to Achieve the Sustainable...
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Pre-mRNA is subsequently spliced into a matured mRNA, which is used as a template to translate into a protein (Merchante et al., 2017). Transcription factors (TFs) including transcriptional activators and repressors play essential roles in the initiation of transcription and often determine the ...
Science, 355 (2017), pp. 1423-1427, 10.1126/science.aaf0683 View in ScopusGoogle Scholar [23] T. Okazaki, S. Chikuma, Y. Iwai, S. Fagarasan, T. Honjo A rheostat for immune responses: the unique properties of PD-1 and their advantages for clinical application Nat. Immunol., 14 (2013...