1,230 research outputs found
Low-bias Negative Differential Resistance effect in armchair graphene nanoribbon junctions
Graphene nanoribbons with armchair edges (AGNRs) have bandgaps that can be
flexibly tuned via the ribbon width. A junction made of a narrower AGNR
sandwiched between two wider AGNR leads was recently reported to possess two
perfect transmission channels close to the Fermi level. Here, we report that by
using a bias voltage to drive these transmission channels into the gap of the
wider AGNR lead, we can obtain a negative differential resistance (NDR) effect.
Owing to the intrinsic properties of the AGNR junctions, the on-set bias
reaches as low as ~ 0.2 V and the valley current almost vanishes. We further
show that such NDR effect is robust against details of the atomic structure of
the junction, substrate and whether the junction is made by etching or by
hydrogenation.Comment: The following article has been submitted to Applied Physics Letters
(http://scitation.aip.org/content/aip/journal/apl). Copyright (2014)
Author(s). This article is distributed under a Creative Commons Attribution
3.0 Unported Licens
香港文學電影片目
《香港文學電影片目》收錄1913至2000年改編自文學作品的香港電影,及文人作家參與編製的電影。我們希望可以編一個齊全的片目,以方便日後的硏究者和有興趣的同學,但目前香港文學及電影的資料散佚仍多,我們盡力而為,工作了多年,但相信仍 有不少可以補充的地方。就算是拋磚引玉好了,希望前輩高明和有識讀者能給我們提供寶貴意見。片目雖説是涵蓋九十年的文學電影資料,但側重是在五、六〇年代的文藝電影資料。這兩個年代改編文學作品的電影較多,文人參與電影製作亦較活躍,香港文學跟香港電影的關係最密切,這個情況似乎不復見了。編出這片目,不知對今天的電影工作者會不會有一點參考作用?https://commons.ln.edu.hk/chr_book/1000/thumbnail.jp
Hybrid spintronic materials:Growth, structure and properties
10.1016/j.pmatsci.2018.08.001Progress in Materials Science9927-10
胡金銓電影 : 中國文化資源與六○年代港台的文化場域 = King Hu cinema : Chinese cultural resources and the cultural fields of Hong Kong and Taiwan in the 1960s
- …