scholarly journals Electronic structure of single DNA molecules resolved by transverse scanning tunnelling spectroscopy

2007 ◽  
Vol 7 (1) ◽  
pp. 68-74 ◽  
Author(s):  
Errez Shapir ◽  
Hezy Cohen ◽  
Arrigo Calzolari ◽  
Carlo Cavazzoni ◽  
Dmitry A. Ryndyk ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Dna Molecules ◽  
Single Dna Molecules ◽  
Scanning Tunnelling ◽  
Scanning Tunnelling Spectroscopy

Scanning tunnelling spectroscopy on the local electronic structure of Gd@C82 peapods

2010 ◽  
Vol 247 (11-12) ◽  
pp. 3030-3032 ◽  
Author(s):  
Kazunori Ohashi ◽  
Naoki Imazu ◽  
Ryo Kitaura ◽  
Hisanori Shinohara
Keyword(s):  
Electronic Structure ◽  
Scanning Tunnelling ◽  
Local Electronic Structure ◽  
Scanning Tunnelling Spectroscopy

scholarly journals Mapping the Electronic Structure of Polypyrrole with Image-Based Electrochemical Scanning Tunnelling Spectroscopy

2020 ◽  
Author(s):  
Roger Goncalves ◽  
Robert S. Paiva ◽  
Andres M R Ramirez ◽  
Jonathan A Mwanda ◽  
Ernesto C. Pereira ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Electrochemical Impedance ◽  
Wide Range ◽  
Scanning Tunnelling ◽  
Potential Scale ◽  
Electrochemically Deposited ◽  
Interfacial Capacitance ◽  
The Absolute ◽  
Absolute Potential ◽  
Scanning Tunnelling Spectroscopy

Conducting polymers are versatile semiconductors whose applications cover a wide range of devices. Their versatility is due, in addition to other factors, to properties that can be easily modulated according to the intended application. It is therefore important to study and map the electronic structure of these materials to allow for a better correlation between structure and properties. Electrochemical scanning tunnelling spectroscopy (EC-STS) can be a powerful tool to characterize the electronic structure of the semiconductor electrolyte interface. In this work we have used image-based EC-STS (IB-EC-STS) to describe quantitatively the band structure of an electrochemically deposited polypyrrole (PPy) film. IB-EC-STS located the band edge of the polymer’s valence band (VB) at 0.95 V vs. RHE (-5.33 eV in the absolute potential scale) and the intragap polaron states formed when the polymer is oxidised (doped) at 0.46 V vs. RHE (-4.84 eV in the absolute potential scale). The IB-EC-STS data were cross checked with electrochemical impedance spectroscopy (EIS) and Mott-Schottky analysis of the interfacial capacitance. The DOS spectrum obtained from EIS data is consistent with the STS-deduced location of the VB and the polarons.

scholarly journals Mapping the Electronic Structure of Polypyrrole with Image-Based Electrochemical Scanning Tunnelling Spectroscopy

2020 ◽  
Author(s):  
Roger Goncalves ◽  
Robert S. Paiva ◽  
Andres M R Ramirez ◽  
Jonathan A Mwanda ◽  
Ernesto C. Pereira ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Electrochemical Impedance ◽  
Wide Range ◽  
Scanning Tunnelling ◽  
Potential Scale ◽  
Electrochemically Deposited ◽  
Interfacial Capacitance ◽  
The Absolute ◽  
Absolute Potential ◽  
Scanning Tunnelling Spectroscopy

Conducting polymers are versatile semiconductors whose applications cover a wide range of devices. Their versatility is due, in addition to other factors, to properties that can be easily modulated according to the intended application. It is therefore important to study and map the electronic structure of these materials to allow for a better correlation between structure and properties. Electrochemical scanning tunnelling spectroscopy (EC-STS) can be a powerful tool to characterize the electronic structure of the semiconductor electrolyte interface. In this work we have used image-based EC-STS (IB-EC-STS) to describe quantitatively the band structure of an electrochemically deposited polypyrrole (PPy) film. IB-EC-STS located the band edge of the polymer’s valence band (VB) at 0.95 V vs. RHE (-5.33 eV in the absolute potential scale) and the intragap polaron states formed when the polymer is oxidised (doped) at 0.46 V vs. RHE (-4.84 eV in the absolute potential scale). The IB-EC-STS data were cross checked with electrochemical impedance spectroscopy (EIS) and Mott-Schottky analysis of the interfacial capacitance. The DOS spectrum obtained from EIS data is consistent with the STS-deduced location of the VB and the polarons.

scholarly journals Mapping the Electronic Structure of Polypyrrole with Image-Based Electrochemical Scanning Tunnelling Spectroscopy

2020 ◽  
Author(s):  
Roger Goncalves ◽  
Robert S. Paiva ◽  
Andres M R Ramirez ◽  
Jonathan A Mwanda ◽  
Ernesto C. Pereira ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Electrochemical Impedance ◽  
Wide Range ◽  
Scanning Tunnelling ◽  
Potential Scale ◽  
Electrochemically Deposited ◽  
Interfacial Capacitance ◽  
The Absolute ◽  
Absolute Potential ◽  
Scanning Tunnelling Spectroscopy

Conducting polymers are versatile semiconductors whose applications cover a wide range of devices. Their versatility is due, in addition to other factors, to properties that can be easily modulated according to the intended application. It is therefore important to study and map the electronic structure of these materials to allow for a better correlation between structure and properties. Electrochemical scanning tunnelling spectroscopy (EC-STS) can be a powerful tool to characterize the electronic structure of the semiconductor electrolyte interface. In this work we have used image-based EC-STS (IB-EC-STS) to describe quantitatively the band structure of an electrochemically deposited polypyrrole (PPy) film. IB-EC-STS located the band edge of the polymer’s valence band (VB) at 0.95 V vs. RHE (-5.33 eV in the absolute potential scale) and the intragap polaron states formed when the polymer is oxidised (doped) at 0.46 V vs. RHE (-4.84 eV in the absolute potential scale). The IB-EC-STS data were cross checked with electrochemical impedance spectroscopy (EIS) and Mott-Schottky analysis of the interfacial capacitance. The DOS spectrum obtained from EIS data is consistent with the STS-deduced location of the VB and the polarons.

Single-charge transport through hybrid core–shell Au-ZnS quantum dots: a comprehensive analysis from a modified energy structure

Nanoscale ◽  
2021 ◽  
Author(s):  
Tuhin Shuvra Basu ◽  
Simon Diesch ◽  
Ryoma Hayakawa ◽  
Yutaka Wakayama ◽  
Elke Scheer
Keyword(s):  
Quantum Dots ◽  
Electronic Structure ◽  
Carrier Transport ◽  
Comprehensive Analysis ◽  
Energy Structure ◽  
Core Shell ◽  
Single Charge ◽  
Scanning Tunnelling Microscope ◽  
Single Carrier ◽  
Scanning Tunnelling

We examined the modified electronic structure and single-carrier transport of individual hybrid core–shell metal–semiconductor Au-ZnS quantum dots using a scanning tunnelling microscope.

Thermoplastic Nanofluidic Devices for Identifying Abasic Sites in Single DNA Molecules

Lab on a Chip ◽  
2021 ◽  
Author(s):  
Steven A Soper ◽  
Swarnagowri Vaidyanathan ◽  
Franklin Uba ◽  
Bo Hu ◽  
David Kaufman ◽  
...  
Keyword(s):  
Dna Damage ◽  
Therapeutic Efficacy ◽  
Double Strand Breaks ◽  
Dna Molecules ◽  
Strand Breaks ◽  
Single Dna Molecules ◽  
Abasic Sites ◽  
Nanofluidic Devices ◽  
Ap Sites

DNA damage can take many forms such as double-strand breaks and/or the formation of abasic (apurinic/apyrimidinic; AP) sites. The presence of AP sites can be used to determine therapeutic efficacy...

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