4.8 Article

In Situ Adjustable Nanogaps and In-Plane Break Junctions

期刊

SMALL METHODS
卷 7, 期 4, 页码 -

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/smtd.202201427

关键词

adjustable nanogaps; hydrogen bond; in-plane break junctions; single molecule study; wafer compatible nanogaps

向作者/读者索取更多资源

The ability to regulate nanogap size is essential for molecular junctions and control of optical signals. This study proposes two approaches for in situ adjustable metal gaps with high resolution, which can be used in wafer-compatible nanogaps and in-plane molecular break junctions. These adjustable nanogaps allow for repeated opening and closing, providing insights into the conductance of single molecules and molecular dimers. The wafer-compatible nanogaps and in-plane break-junctions offer potential for compact devices and dynamical studies of single molecules.
The ability to precisely regulate the size of a nanogap is essential for establishing high-yield molecular junctions, and it is crucial for the control of optical signals in extreme optics. Although remarkable strategies for the fabrication of nanogaps are proposed, wafer-compatible nanogaps with freely adjustable gap sizes are not yet available. Herein, two approaches for constructing in situ adjustable metal gaps are proposed which allow angstrom ngstrom modulation resolution by employing either a lateral expandable piezoelectric sheet or a stretchable membrane. These in situ adjustable nanogaps are further developed into in-plane molecular break junctions, in which the gaps can be repeatedly closed and opened thousands of times with self-assembled molecules. The conductance of the single 1,4-benzenediamine (BDA) and the BDA molecular dimer is successfully determined using the proposed strategy. The measured conductance agreeing well with the data by employing another well-established scanning tunneling microscopy break junction technique provides insight into the formation of molecule dimer via hydrogen bond at single molecule level. The wafer-compatible nanogaps and in-plane dynamical break-junctions provide a potential approach to fabricate highly compacted devices using a single molecule as a building block and supply a promising in-plane technique to address the dynamical properties of single molecules.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.8
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据