We have successfully fabricated nanometer-scale carbon nanotube field effect transistors (CNT FETs) on a flexible and transparent substrate by electron-beam lithography. The measured current-voltage data show good hole conduction FET characteristics, and the on/off ratio of the current is more than 10(2). The conductance (as well as current) systematically decreases with the increase of the strain, suggesting that the bending of the substrate still affects the deformation condition of the short channel CNT FETs.
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http://dx.doi.org/10.1166/jnn.2011.3386 | DOI Listing |
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December 2024
Department of Chemical Science and Engineering, Institute of Science Tokyo, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8501, Japan.
Morphology-controlled synthesis of covalent organic frameworks (COFs) offers significant potential for electrochemical applications. However, controlling the deposition of nanometer-scale COFs on carbon supports remains challenging due to the need for a slow COF generation rate and the dispersion of carbon supports in liquid-phase synthesis. In this study, nanometer-scale COF/carbon composites are fabricated using electrochemically generated acid (EGA) to assist in the formation of imine-type COFs, which are then deposited onto pre-cast nanocarbon supports on an electrode.
View Article and Find Full Text PDFPhys Chem Chem Phys
January 2025
Center of Innovation for Flow through Porous Media, Department of Energy and Petroleum Engineering, University of Wyoming, Laramie, WY 82071, USA.
This study investigates the effect of confinement on the phase behavior of carbon dioxide (CO) and its implications for storage in nanometer-scale pores. A patented gravimetric apparatus was employed to experimentally measure the adsorption and desorption isotherms at varying pore sizes and temperatures. The isotherms were generated at temperatures below the critical point of CO (from -23.
View Article and Find Full Text PDFJ Phys Chem A
December 2024
INL - International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga, Braga 4715-330, Portugal.
We present the development of an advanced sensing platform using a monolayer of graphene functionalized with fluorophore-labeled DNA hairpins to detect the kinetics of single hairpins during the hybridization reaction. The near-field photonic effects of graphene induce a distance-dependent quenching effect on the attached fluorescent labels, resulting in distinct optical signals in response to axial displacements resulting from DNA hybridization. Employing a wide-field Total Internal Reflection Fluorescence (TIRF) optical setup coupled with a sensitive Electron-Multiplying Charge-Coupled Device (EM-CCD) camera, we successfully detected fluorescent signals of individual or a low number of individual DNA hairpins within a low-concentration environment DNA target (tDNA).
View Article and Find Full Text PDFCell Rep Phys Sci
November 2024
Department of Applied Physics, Aalto University, FIN-02150 Espoo, Finland.
Controlled tailoring of atomically thin MXene interlayer spacings by surfactant/intercalants (e.g., polymers, ligands, small molecules) is important to maximize their potential for application.
View Article and Find Full Text PDFACS Appl Mater Interfaces
December 2024
Institute of Stochastics, Ulm University, 89069 Ulm, Germany.
Polymer-based batteries represent a promising candidate for next-generation batteries due to their high power densities, decent cyclability, and environmentally friendly synthesis. However, their performance essentially depends on the complex multiscale morphology of their electrodes, which can significantly affect the transport of ions and electrons within the electrode structure. In this paper, we present a comprehensive investigation of the complex relationship between the three-dimensional (3D) morphology of polymer-based battery electrodes and their effective transport properties.
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