Inside Cover: Direct Conductance Measurement of Individual Metallo-DNA Duplexes within Single-Molecule Break Junctions (Angew. Chem. Int. Ed. 38/2011)

2011 ◽  
Vol 50 (38) ◽  
pp. 8762-8762 ◽  
Author(s):  
Song Liu ◽  
Guido H. Clever ◽  
Yusuke Takezawa ◽  
Motoo Kaneko ◽  
Kentaro Tanaka ◽  
...  
Keyword(s):  
Single Molecule ◽  
Dna Duplexes ◽  
Conductance Measurement ◽  
Break Junctions

Innentitelbild: Direct Conductance Measurement of Individual Metallo-DNA Duplexes within Single-Molecule Break Junctions (Angew. Chem. 38/2011)

2011 ◽  
Vol 123 (38) ◽  
pp. 8920-8920
Author(s):  
Song Liu ◽  
Guido H. Clever ◽  
Yusuke Takezawa ◽  
Motoo Kaneko ◽  
Kentaro Tanaka ◽  
...  
Keyword(s):  
Single Molecule ◽  
Dna Duplexes ◽  
Conductance Measurement ◽  
Break Junctions

Direct Conductance Measurement of Individual Metallo-DNA Duplexes within Single-Molecule Break Junctions

2011 ◽  
Vol 50 (38) ◽  
pp. 8886-8890 ◽  
Author(s):  
Song Liu ◽  
Guido H. Clever ◽  
Yusuke Takezawa ◽  
Motoo Kaneko ◽  
Kentaro Tanaka ◽  
...  
Keyword(s):  
Single Molecule ◽  
Dna Duplexes ◽  
Conductance Measurement ◽  
Break Junctions

Direct Conductance Measurement of Individual Metallo-DNA Duplexes within Single-Molecule Break Junctions

2011 ◽  
Vol 123 (38) ◽  
pp. 9048-9052 ◽  
Author(s):  
Song Liu ◽  
Guido H. Clever ◽  
Yusuke Takezawa ◽  
Motoo Kaneko ◽  
Kentaro Tanaka ◽  
...  
Keyword(s):  
Single Molecule ◽  
Dna Duplexes ◽  
Conductance Measurement ◽  
Break Junctions

Measurement and control of detailed electronic properties in a single molecule break junction

2014 ◽  
Vol 174 ◽  
pp. 91-104 ◽  
Author(s):  
Kun Wang ◽  
Joseph Hamill ◽  
Jianfeng Zhou ◽  
Cunlan Guo ◽  
Bingqian Xu
Keyword(s):  
Data Analysis ◽  
Molecular Electronics ◽  
Single Molecule ◽  
Molecular Orbitals ◽  
Break Junction ◽  
Break Junctions ◽  
Single Molecule Level ◽  
Analysis Techniques ◽  
Future Design ◽  
Molecule Junction

The lack of detailed experimental controls has been one of the major obstacles hindering progress in molecular electronics. While large fluctuations have been occurring in the experimental data, specific details, related mechanisms, and data analysis techniques are in high demand to promote our physical understanding at the single-molecule level. A series of modulations we recently developed, based on traditional scanning probe microscopy break junctions (SPMBJs), have helped to discover significant properties in detail which are hidden in the contact interfaces of a single-molecule break junction (SMBJ). For example, in the past we have shown that the correlated force and conductance changes under the saw tooth modulation and stretch–hold mode of PZT movement revealed inherent differences in the contact geometries of a molecular junction. In this paper, using a bias-modulated SPMBJ and utilizing emerging data analysis techniques, we report on the measurement of the altered alignment of the HOMO of benzene molecules with changing the anchoring group which coupled the molecule to metal electrodes. Further calculations based on Landauer fitting and transition voltage spectroscopy (TVS) demonstrated the effects of modulated bias on the location of the frontier molecular orbitals. Understanding the alignment of the molecular orbitals with the Fermi level of the electrodes is essential for understanding the behaviour of SMBJs and for the future design of more complex devices. With these modulations and analysis techniques, fruitful information has been found about the nature of the metal–molecule junction, providing us insightful clues towards the next step for in-depth study.

Fast sensitive amplifier for two-probe conductance measurements in single molecule break junctions

2017 ◽  
Vol 88 (3) ◽  
pp. 033904 ◽  
Author(s):  
Tyler K. Johnson ◽  
Jeffrey A. Ivie ◽  
Jason Jaruvang ◽  
Oliver L. A. Monti
Keyword(s):  
Single Molecule ◽  
Break Junctions

scholarly journals Specific DNA duplex formation at an artificial lipid bilayer: fluorescence microscopy after Sybr Green I staining

2014 ◽  
Vol 10 ◽  
pp. 2307-2321 ◽  
Author(s):  
Emma Werz ◽  
Helmut Rosemeyer
Keyword(s):  
Lipid Bilayer ◽  
Single Molecule ◽  
Dna Sequences ◽  
Sybr Green ◽  
Sybr Green I ◽  
Racemic Mixture ◽  
Dna Duplexes ◽  
Target Dna ◽  
Single Molecule Fluorescence Spectroscopy ◽  
Duplex Formation

The article describes the immobilization of different probe oligonucleotides (4, 7, 10) carrying each a racemic mixture of 2,3-bis(hexadecyloxy)propan-1-ol (1a) at the 5’-terminus on a stable artificial lipid bilayer composed of 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphoethanolamine (POPE) and 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC). The bilayer separates two compartments (cis/trans channel) of an optical transparent microfluidic sample carrier with perfusion capabilities. Injection of unlabeled target DNA sequences (6, 8, or 9), differing in sequence and length, leads in the case of complementarity to the formation of stable DNA duplexes at the bilayer surface. This could be verified by Sybr Green I double strand staining, followed by incubation periods and thorough perfusions, and was visualized by single molecule fluorescence spectroscopy and microscopy. The different bilayer-immobilized complexes consisting of various DNA duplexes and the fluorescent dye were studied with respect to the kinetics of their formation as well as to their stability against perfusion.

Three-Terminal Single-Molecule Junctions Formed by Mechanically Controllable Break Junctions with Side Gating

Nano Letters ◽  
2013 ◽  
Vol 13 (6) ◽  
pp. 2809-2813 ◽  
Author(s):  
Dong Xiang ◽  
Hyunhak Jeong ◽  
Dongku Kim ◽  
Takhee Lee ◽  
Yongjin Cheng ◽  
...  
Keyword(s):  
Single Molecule ◽  
Break Junctions ◽  
Single Molecule Junctions

SINGLE-MOLECULE DNA CONDUCTANCE IN WATER SOLUTIONS: ROLE OF EXPLICIT WATER–COUNTERION SHEATH AND CHEMICAL MODIFICATION OF NUCLEOBASES

2009 ◽  
Vol 04 (03) ◽  
pp. 231-243 ◽  
Author(s):  
E. B. STARIKOV ◽  
C. NGANOU ◽  
K. H. LEE ◽  
G. CUNIBERTI ◽  
W. WENZEL
Keyword(s):  
Chemical Modification ◽  
Single Molecule ◽  
Transmission Probability ◽  
Dna Bases ◽  
Electronic Systems ◽  
Specific Charge ◽  
Dna Duplexes ◽  
Water Solutions ◽  
Explicit Water

Dependence of charge transmission through several conventional and extended DNA duplexes on the explicit presence of their water–counterion surrounding has been theoretically studied. We show here that: (a) the latter does not form specific charge transmission channels in addition to those available in DNA duplexes themselves; (b) chemically modifying DNA bases to extend their π-electronic systems does not significantly alter time-averaged charge transmission probability through DNA duplexes.

Measuring single molecule conductance with break junctions

2006 ◽  
Vol 131 ◽  
pp. 145-154 ◽  
Author(s):  
Jin He ◽  
Otto Sankey ◽  
Myeong Lee ◽  
Nongjian Tao ◽  
Xiulan Li ◽  
...  
Keyword(s):  
Single Molecule ◽  
Break Junctions

scholarly journals Lithographic mechanical break junctions for single-molecule measurements in vacuum: possibilities and limitations

2008 ◽  
Vol 10 (6) ◽  
pp. 065008 ◽  
Author(s):  
Christian A Martin ◽  
Dapeng Ding ◽  
Herre S J van der Zant ◽  
Jan M van Ruitenbeek
Keyword(s):  
Single Molecule ◽  
Break Junctions
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