Fabrication of Heterogeneous TiO2-CdS Nanotubular Arrays on Transparent Conductive Substrate and Their Photoelectrochemical Properties

AbstractPalladium nanowires have been electrodeposited into mesoporous silica thin film templates. Palladium continually grows and fills silica mesopores starting from a bottom conductive substrate, providing a ready and efficient route to fabricate a macroscopic palladium nanowire thin films for potentially use in fuel cells, electrodes, sensors, and other applications. X-ray diffraction (XRD) and transmission electron microscopy (TEM) indicate it is possible to create different nanowire morphology such as bundles and swirling mesostructure based on the template pore structure.

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Photoelectrochemical Properties of Titanium Dioxide Films with Inclusions of Carbon Nanostructures

Innovations in Corrosion and Materials Science (Formerly Recent Patents on Corrosion Science) ◽

10.2174/2352094905666151006011654 ◽

2015 ◽

Vol 5 (2) ◽

pp. 65-67

Author(s):

Volodymyr Ogenko ◽

Lyudmila Lysyuk ◽

Vera Vorobets ◽

Gennadii Kolbasov ◽

Sergei Vernadskii

Keyword(s):

Titanium Dioxide ◽

Carbon Nanostructures ◽

Photoelectrochemical Properties ◽

Titanium Dioxide Films

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Combined quantum tunnelling and dielectrophoretic trapping for molecular analysis at ultra-low analyte concentrations

Nature Communications ◽

10.1038/s41467-021-21101-x ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Longhua Tang ◽

Binoy Paulose Nadappuram ◽

Paolo Cadinu ◽

Zhiyu Zhao ◽

Liang Xue ◽

...

Keyword(s):

Limited Range ◽

Practical Implementation ◽

Successful Operation ◽

Detection Rates ◽

Quantum Tunnelling ◽

Conductive Substrate ◽

Scanning Tunnelling ◽

Tunnelling Microscopy ◽

Transport Molecules ◽

Magnitude Increase

AbstractQuantum tunnelling offers a unique opportunity to study nanoscale objects with atomic resolution using electrical readout. However, practical implementation is impeded by the lack of simple, stable probes, that are required for successful operation. Existing platforms offer low throughput and operate in a limited range of analyte concentrations, as there is no active control to transport molecules to the sensor. We report on a standalone tunnelling probe based on double-barrelled capillary nanoelectrodes that do not require a conductive substrate to operate unlike other techniques, such as scanning tunnelling microscopy. These probes can be used to efficiently operate in solution environments and detect single molecules, including mononucleotides, oligonucleotides, and proteins. The probes are simple to fabricate, exhibit remarkable stability, and can be combined with dielectrophoretic trapping, enabling active analyte transport to the tunnelling sensor. The latter allows for up to 5-orders of magnitude increase in event detection rates and sub-femtomolar sensitivity.

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