Superstructure manipulation and electronic measurement of monolayers comprising discotic liquid crystals with intrinsic dipole moment using STM/STS

2018 ◽  
Vol 54 (58) ◽  
pp. 8048-8051 ◽  
Author(s):  
Kum-Yi Cheng ◽  
Chih-Hsun Lin ◽  
Mei-Chun Tzeng ◽  
Ayyaz Mahmood ◽  
Muhammad Saeed ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Dipole Moment ◽  
Liquid Crystals ◽  
Transfer Efficiency ◽  
Discotic Liquid Crystals ◽  
Solid Interface ◽  
Scanning Tunnelling ◽  
Electronic Measurement ◽  
Tunnelling Microscopy ◽  
Intrinsic Dipole Moment

In this work, we studied the discotic liquid crystals (DLCs) of dibenzo[a,c]phenazine at the liquid–solid interface using scanning tunnelling microscopy/spectroscopy, by which we show how to tailor the DLC assemblies and in turn their electron-transfer efficiency.

scholarly journals Scanning tunnelling microscopy of a foldamer prototype at the liquid/solid interface: water/Au(111) versus 1-octanol/graphite

2006 ◽  
Vol 30 (10) ◽  
pp. 1420 ◽  
Author(s):  
Andrey S. Klymchenko ◽  
Norbert Schuurmans ◽  
Mark van der Auweraer ◽  
Ben L. Feringa ◽  
Jan van Esch ◽  
...  
Keyword(s):  
Scanning Tunnelling Microscopy ◽  
Solid Interface ◽  
Scanning Tunnelling ◽  
Tunnelling Microscopy

scholarly journals Approaches to single-molecule studies of metalloprotein electron transfer using scanning probe-based techniques

2017 ◽  
Vol 46 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Martin Elliott ◽  
D. Dafydd Jones
Keyword(s):  
Electron Transfer ◽  
Single Molecule ◽  
Research Area ◽  
Scanning Tunnelling ◽  
Single Molecule Studies ◽  
Tunnelling Microscopy ◽  
Active Research ◽  
Electron Transfer Properties ◽  
Transfer Properties ◽  
Active Research Area

The single-molecule properties of metalloproteins have provided an intensely active research area in recent years. This brief review covers some of the techniques used to prepare, measure and analyse the electron transfer properties of metalloproteins, concentrating on scanning tunnelling microscopy-based techniques and advances in attachment of proteins to electrodes.

An Improved Method for the Preparation and TEM Examination of Sharp Pointed Tips used in APFIM and STM

1990 ◽  
Vol 48 (2) ◽  
pp. 102-103
Author(s):  
E.A. Fischione ◽  
P.E. Fischione ◽  
J.J. Haugh ◽  
M.G. Burke
Keyword(s):  
Atom Probe ◽  
Preparation Process ◽  
Improved Method ◽  
Ion Milling ◽  
Polishing Process ◽  
Probe Field ◽  
Scanning Tunnelling ◽  
Stm Tips ◽  
Tunnelling Microscopy ◽  
Ion Microscopy

A common requirement for both Atom Probe Field-Ion Microscopy (APFIM) and Scanning Tunnelling Microscopy (STM) is a sharp pointed tip for use as either the specimen (APFIM) or the probe (STM). Traditionally, tips have been prepared by either chemical or electropolishing techniques. Recently, ion-milling has been successfully employed in the production of APFIM tips [1]. Conventional electropolishing techniques are applicable to a wide variety of metals, but generally require careful manual adjustments during the polishing process and may also be time-consuming. In order to reduce the time and effort involved in the preparation process, a compact, self-contained polishing unit has been developed. This system is based upon the conventional two-stage electropolishing technique in which the specimen/tip blank is first locally thinned or “necked”, and subsequently electropolished until separation occurs.[2,3] The result of this process is the production of two APFIM or STM tips. A mechanized polishing unit that provides these functions while automatically maintaining alignment has been designed and developed.

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